Vamos Automotive Simulator git

3501 lines (2250 with data), 154.5 kB

Changes since 0.8.0
2014-02-22  Sam Varner  <snick-a-doo@comcast.net>

    Don't put the cars so far off track for qualifying.

2014-02-22  Sam Varner  <snick-a-doo@comcast.net>

    Distribute all track files.

2014-02-16  Sam Varner  <snick-a-doo@comcast.net>

	Make configure and makefiles more portable.

-- 0.8.0 --
2014-02-03  Sam Varner  <snick-a-doo@comcast.net>

	Show lap times for practice.  Don't show staring lights for
	practice.

2014-02-02  Sam Varner  <snick-a-doo@comcast.net>

	Changed license to GPL3.

2014-01-28  Sam Varner  <snick-a-doo@comcast.net>

	Build Python modules as part of compilation.

2014-01-25  Sam Varner  <snick-a-doo@comcast.net>

	Added boost::python wrappers for libraries.

2014-01-19  Sam Varner  <snick-a-doo@comcast.net>

	Make robots slow down after event is over.

2014-01-18  Sam Varner  <snick-a-doo@comcast.net>

	Implemented timed qualifying session.

2014-01-01  Sam Varner  <snick-a-doo@comcast.net>

	Read and write race results.

2013-11-10  Sam Varner  <snick-a-doo@comcast.net>

	Improved passing.

2013-11-07  Sam Varner  <snick-a-doo@comcast.net>

	Edited scripts to work with Python 3

2013-10-01  Sam Varner  <snick-a-doo@comcast.net>

	Added a model of tire heating, wear, and grip.  Added a hardness
	parameter to the tire section of the car definition file.  Greater
	hardness means less heading as a function of force transmitted.

2013-06-02  Sam Varner  <snick-a-doo@comcast.net>

	Show the track view initially if there are no controlled cars.

2013-06-02  Sam Varner  <snick-a-doo@comcast.net>

	Put a camera on the outside of each turn on generated tracks.

2013-06-02  Sam Varner  <snick-a-doo@comcast.net>

	Split >180 degree curves into double-apex curves on random tracks.

2013-03-17  Sam Varner  <snick-a-doo@comcast.net>

	Previously we would go though the other car's entire history until
	finding the entry to use for calculating the time difference. Now
	we stop looking when delta t is so large that the slipstream
	effect is negligible. This prevents a drop in frame rate when cars
	are far apart.

2013-03-17  Sam Varner  <snick-a-doo@comcast.net>

	Define an OpenAL exit handler

2013-03-17  Sam Varner  <snick-a-doo@comcast.net>

	When the racing line nears the edge the calculation blows
	up. Constrain lane shift to [1.0, 1.0].

2013-03-13  Sam Varner  <snick-a-doo@comcast.net>

	Use the track position store in Car_Information where possible

	Avoid recalculating track position by using the last recorded
	track position in the replay data.

2013-03-09  Sam Varner  <snick-a-doo@comcast.net>

	Timing lines are added to random roads each km. Previously, no
	timing lines were added. This caused an assert to fail.

	For circuits, make the last elevation match the first to avoid
	starting on a hill.

	Don't display the lap count or fastest lap if the track is not
	closed.

2013-02-16  Sam Varner  <snick-a-doo@comcast.net>

	Release the clutch faster at the start.

2013-02-16  Sam Varner  <snick-a-doo@comcast.net>

	Put the brakes on until the clutch is released to avoid rolling on
	at the start of a race.

2013-01-12  Sam Varner  <snick-a-doo@comcast.net>

	Check for a gap at more points before attempting a pass.

2013-01-26  Sam Varner  <snick-a-doo@comcast.net>

	Swiched from state machine to event-driven driver.

2013-01-21  Sam Varner  <snick-a-doo@comcast.net>

	Draw 2D starting lights.

2013-01-19  Sam Varner  <snick-a-doo@comcast.net>

	Timing_Info handles timing of the starting lights.

	Robot drivers wait for the start of the race. They also have some
	random reaction time.  Avoid jitter at low speeds with the chase
	view.

	Added function to generate a random double in a range to the
	numerics.

2013-01-14  Sam Varner  <snick-a-doo@comcast.net>

	Improve rendering peformance of F1 cars

-- 0.7.1 --
2012-12-30  Sam Varner  <snick-a-doo@comcast.net>

	Stop updating timing after race is over.

	Race ends for each car after all laps are complete, or after
	completing the current lap if another car has already finished.

	Added laps and robot performance options to main program.

2012-12-26  Sam Varner  <snick-a-doo@comcast.net>

	Added on-screen leaderboard.

2012-12-24  Sam Varner  <snick-a-doo@comcast.net>

	Implemented Timing_Info class.

2012-12-16  Sam Varner  <snick-a-doo@comcast.net>

	Added F1 cars

2012-12-09  Sam Varner  <snick-a-doo@comcast.net>

	Added Circuit of the Americas.

	Put cars on the grid from back to front.

	Only search in one direction when finding the segment for
	track_coordinates()

	Added different colored GT model files.

	Specify focused car with argument to World::add_car()

	Add Boost >=v1.46.0 requirement to configure script.

	Added the ability to have distunguishable robot cars

	If the --car option names a directory, robot cars will be read
	from that directory. Used boost::filesystem so we now depend on
	Boost even if unit tests are not built. Automake version change
	required regeneration of all Makefile.in.

-- 0.7.1 --
	* world/Robot_Driver.cc:
	Robots can now passe and be passed reasonably gracefully.

	* vamos/vamos.cc, data/cars:
	Robot cars now have different colors and performance
	characteristics.

	* world/Gl_World.cc:
	Running order and intervals are displayed when multiple cars are
	on track. If there's just one, the lap time history is shown.

	* vamos/vamos.cc:
	Added command-line options for setting the number of laps and the
	performance level of the robot cars.

-- 0.7.0 --
2012-01-02  Sam Varner  <snick-a-doo@comcast.net>

	* world/Robot_Driver.cc:
	Fix error when entering pits with robot cars on track.

	Don't update the robot's road index when detecting collisions with other cars.

	* track/Gl_Road_Segment.cc:
	Fix drawing of segments where pit in/out is close to the end.

	* vamos/vamos.cc, world/Gl_World.cc, world/Gl_World.h, world/World.cc, world/World.h, track/Strip_Track.cc:
	Improved placement of car on start and on reset.

	Car is oriented to match the slope and bank of the track.

	* body/Rigid_Body.cc, body/Tire.cc, body/Wheel.cc, body/Wheel.h:
	Avoid division by zero in tire friction calculations.  This avoid the occasional
	black screen on startup.

	* geometry/Spline.cc:
	Calculate the slope when falling back to linear interpolation.

2011-12-31  Sam Varner  <snick-a-doo@comcast.net>

	* track/Road_Segment.cc:
	Fixed occasional problem determining if the car is on the pit lane merge.

	* track/Strip_Track.cc: Fixed automatic joining of pit lane to track.

2011-12-25  Sam Varner  <snick-a-doo@comcast.net>

	* track/Road_Segment.cc, track/Road_Segment.h, track/Strip_Track_Reader.cc:
	Fixed kerb rendering.

2011-12-24  Sam Varner  <snick-a-doo@comcast.net>

	* world/Robot_Driver.cc: Improved gear selection and braking.

2011-12-04  Sam Varner  <snick-a-doo@comcast.net>

	* world/Robot_Driver.cc, world/Robot_Driver.h, track/Strip_Track.cc, track/Strip_Track.h:
	Account for slope during braking

	The deceleration calculation includes the component of gravity in, or opposite
	to the direction of travel.  This results in earlier braking downhill and later
	braking uphill.

2011-12-03  Sam Varner  <snick-a-doo@comcast.net>

	* data/cars/F1.xml, data/cars/default-car.xml, world/Robot_Driver.cc, world/Robot_Driver.h, body/Aerodynamic_Device.cc, body/Aerodynamic_Device.h, body/Car.cc, body/Car.h, body/Car_Reader.cc, body/Rigid_Body.cc, body/Rigid_Body.h:
	Improved robot speed control

	Automatically account for downforce in braking and cornering speed
	calculations.  Slip, deceleration, and lateral acceleration parameters in car
	definition files are now doubles instead of 2-element arrays.

	Account for elevation changes and banking in braking and cornering speed
	calculations.

2011-11-23  Sam Varner  <snick-a-doo@comcast.net>

	* world/Robot_Driver.cc, world/Robot_Driver.h, world/World.cc, world/World.h, track/Strip_Track.cc, track/Strip_Track.h:
	Account for hills and dips when calculating the maximum speed for robots.
	Lateral acceleration is now expressed in g's.

2011-09-11  Sam Varner  <snick-a-doo@comcast.net>

	* world/Robot_Driver.cc, world/Robot_Driver.h:
	Improved robot speed control.

	- Renamed slip_control traction_control.
	- Use anti-lock braking as a fallback.
	- Keep revs in check when the clutch is not fully engaged.
	- Extracted set_speed() method.
	- Robots follow better (but don't attempt to pass)
	- Braking control takes slipstream into account.

2011-08-28  Sam Varner  <snick-a-doo@comcast.net>

	* track/Strip_Track.cc:
	Load every other racing line point to avoid closely spaced points at sharp
	corners.

2011-08-22  Sam Varner  <snick-a-doo@comcast.net>

	* world/Robot_Driver.cc:
	Ensure that the robot driver's target is ahead of the car regardless of
	orientation.  This prevents the robot from going backwards after a spin.

2011-08-12  Sam Varner  <snick-a-doo@comcast.net>

	* scripts/random_track.py:
	Made randomly generated tracks swoopier.  Added braking markers and cameras.

2011-07-17  Sam Varner  <snick-a-doo@comcast.net>

	* track/Strip_Track.cc, track/Strip_Track.h, track/Strip_Track_Reader.cc:
	Use periodic splines for elevation and racing line.  Remove slope setting for
	elevation.

	* track/Gl_Road_Segment.cc, track/Gl_Road_Segment.h, track/Road_Segment.cc, track/Road_Segment.h, track/test_Strip_Track.cc:
	Banking was only ever calculated with two points.  Remove interface that assumes
	an arbitrary number of points.

	* geometry/Spline.cc, geometry/Spline.h, geometry/test_Spline.cc:
	Added periodic spline calculation for closed curves like track elevation.

2011-06-24  Sam Varner  <snick-a-doo@comcast.net>

	* vamos/vamos.cc:
	Added option --show-line=ARG for showing/hiding the racing line.  Overrides
	value in track file.

	* body/Gl_Car.cc: Fixed gear output in on-screen text.

	* track/Strip_Track.cc, track/Strip_Track.h, track/Strip_Track_Reader.cc:
	Added "resolution" racing line tag.

2011-06-19  Sam Varner  <snick-a-doo@comcast.net>

	* doc/robot-cars/demo.xml, track/Strip_Track_Reader.cc:
	Made the option to render the racing line an attribute of the <racing-line>
	tag.  <racing-line show="1"> causes the line to be drawn.

	* doc/robot-cars/demo.xml, track/Strip_Track.cc, track/Strip_Track.h, track/Strip_Track_Reader.cc, world/Robot_Driver.cc, world/Robot_Driver.h:
	Simplified racing line generation.

	Removed track distance to racing line distance interpolator since the racing
	line nodes are forced to keep their positions along the track.

	Added "damping" and "iterations" tags to the reader.

2011-06-16  Sam Varner  <snick-a-doo@comcast.net>

	* track/Strip_Track.h, track/Strip_Track.cc:
	Improved racing line calculation by constraining nodes to move across the track.

2011-05-09  Sam Varner  <snick-a-doo@comcast.net>

	* world/Robot_Driver.cc, world/Robot_Driver.h:
	Compensate for cornering forces under braking.

2011-04-22  Sam Varner  <snick-a-doo@comcast.net>

	* world/Robot_Driver.cc, world/Robot_Driver.h:
	Use separate controllers for setting the throttle according to slip ratio and
	maximum speed.

2011-04-16  Sam Varner  <snick-a-doo@comcast.net>

	* data/cars/F1.xml, data/cars/GT.xml, data/cars/default-car.xml, data/cars/front-drive.xml, data/cars/trainer.xml, body/Aerodynamic_Device.cc, body/Aerodynamic_Device.h, body/Car_Reader.cc, body/Rigid_Body.cc:
	Changed calculation of drag force for wings.

	Now, the actual lift coefficient is the specified value times the efficiency.
	The wing's drag coefficient is the specified lift coefficient times
	(1-efficiency).  Removed drag-coefficient parameter.  Updated car definition
	files.

2011-03-27  Sam Varner  <snick-a-doo@comcast.net>

	* body/Gl_Car.cc, body/Gl_Car.h:
	Refactored code for drawing text on screen.  Added bar graphs for throttle and brake.

2011-01-11  Sam Varner  <snick-a-doo@comcast.net>

	* track/Gl_Road_Segment.cc, track/Gl_Road_Segment.h, track/Makefile.am, track/Makefile.in, track/Road_Segment.cc, track/Road_Segment.h, track/Strip_Track.cc, track/Strip_Track.h, track/test_Strip_Track.cc:
	Re-wrote closing code.  Added Doxygen markup.  Small improvements.

2010-12-20  Sam Varner  <snick-a-doo@comcast.net>

	* world/Robot_Driver.cc, world/Robot_Driver.h:
	Implemented short-shifting for robots.

2010-10-31  Sam Varner  <snick-a-doo@comcast.net>

	* world/Gl_World.cc, world/Gl_World.h, world/World.cc, world/World.h, data/controls/default-controls.xml:
	First cut at replay.

2010-10-30  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Korea.xml: Added Korea International Circuit F1 layout.

2010-10-20  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Istanbul.xml: Reconciled with satellite image.

2010-08-29  Sam Varner  <snick-a-doo@comcast.net>

	* data/cars/wheel-1967.ac: Added narrow wheels for the 1967 F1 car.

	* vamos/vamos.cc, world/Gl_World.cc, world/Gl_World.h:
	Added an option to disable the mirror views for performance reasons.

	* world/World.cc:
	Use exponential instead of linear air density in the slipstream.

2010-08-28  Sam Varner  <snick-a-doo@comcast.net>

	* data/cars/F1-1967.xml:
	Rebuild the 1967 F1 car.  Not quite undriveable anymore.

	* Doxyfile: Added Doxygen config file

	* body/Documentation.h, geometry/Documentation.h, media/Documentation.h, track/Documentation.h, world/Documentation.h:
	Added dummy header files to document the namespaces for Doxygen.

	* data/textures/1967-steering-wheel.png, data/textures/1967-steering-wheel.xcf:
	Better 1967 Lotus steering wheel.

	* data/tracks/Makefile.am, data/tracks/Silverstone-2010.xml:
	Added 2010 layout (2011 layout with 2009 starting line)

2010-07-06  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Makefile.am, data/tracks/Makefile.in:
	Added new Silverstone layout.

	* data/sounds/kerb.wav:
	Kerb sound file had servral samples with different waveforms and pitches.
	Trimmed to one wavelength of one waveform.

2010-06-30  Sam Varner  <snick-a-doo@comcast.net>

	* track/Gl_Road_Segment.cc, track/Road_Segment.cc, track/Road_Segment.h:
	Add flag for using or ignoring the kerb when calculating normal vectors.  It's
	useful to ignore the kerb to get the correct normal for rendering the track and
	shoulders.  For the pysics, the kerb should not be ignored.

2010-05-09  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/Makefile.in, geometry/Numeric.h, geometry/Rectangle.cc, geometry/Rectangle.h, geometry/test_Numeric.cc, geometry/test_Rectangle.cc, track/Gl_Road_Segment.cc, track/Strip_Track.cc, world/Gl_World.cc, world/Gl_World.h, geometry/Makefile.am:
	Added simple zooming to map view.

-- 0.6.3 --
2010-05-09  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/Makefile.in, geometry/Numeric.h, geometry/Rectangle.cc, geometry/Rectangle.h, geometry/test_Numeric.cc, geometry/test_Rectangle.cc, track/Gl_Road_Segment.cc, track/Strip_Track.cc, world/Gl_World.cc, world/Gl_World.h, geometry/Makefile.am:
	Added simple zooming to map view.

2010-05-02  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Silverstone-2011.xml: Added new Silverstone layout.

2010-04-01  Sam Varner  <snick-a-doo@comcast.net>

	* world/Robot_Driver.cc: Make robots less eager to shift into 1st gear.

	* world/Gl_World.cc, world/Makefile.am, world/Makefile.in:
	Don't include directory in SDL include.  Use pkg-config to put the directory in
	the include path.

	* track/Road_Segment.cc: Include the x track normal vector component.

	* geometry/Material.cc: Handle bump wavelengths of zero.

2010-02-04  Sam Varner  <snick-a-doo@comcast.net>

	* doc/vamos.texi, doc/vamos.info: Updated dependencies

2010-02-03  Sam Varner  <snick-a-doo@comcast.net>

	* data/worlds/night.xml: Added night-light world

	* world/Robot_Driver.cc, world/Robot_Driver.h:
	First crack at another attempt at collision avoidance.

	* data/tracks/Bahrain.xml, data/tracks/Monza.xml, data/tracks/Shanghai.xml, data/tracks/default-track.xml:
	Bumpiness and tweaks.

2009-12-24  Sam Varner  <snick-a-doo@comcast.net>

	* track/Strip_Track.cc:
	Use distance from the start of the segment to calculate track width
	when testing for contact.

	* geometry/Calculations.cc, geometry/Calculations.h, geometry/Constants.h, geometry/Makefile.am, geometry/Makefile.in, geometry/test_Calculations.cc:
	Added a file for useful calculations involving the classes in
	Vamos_Geometry.  Added unit tests.

	Added constant for 1/sqrt(2).

	* data/tracks/skid_pad.xml:
	Avoid phantom wall not automatically closing the track.

2009-12-19  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/Three_Vector.cc, geometry/Three_Vector.h, body/test_Car.cc:
	Refixed stream operators for Boost test cases.  Now the usual
	operators can be used inside test cases.

2009-12-17  Sam Varner  <snick-a-doo@comcast.net>

	* data/worlds/default-world.xml, data/worlds/earth.xml, data/worlds/moon.xml, world/Gl_World.cc, world/Gl_World.h, world/World.cc, world/World.h:
	Re-wrote the Timer class to calculate intervals from total elapsed
	clock time.  This prevents systematic clock drift.

	Removed maximum time step and lower limit on frame rate.

	Changed Timing_Info to work with total elapsed simulation time.

2009-12-12  Sam Varner  <snick-a-doo@comcast.net>

	* data/textures/night-sky.png: Night sky texture.

	* data/tracks/Jerez.xml: Added Jerez track.

2009-12-06  Sam Varner  <snick-a-doo@comcast.net>

	* body/Particle.h, body/Rigid_Body.cc, body/Wheel.h:
	Restore single-contact logic.

2009-12-01  Sam Varner  <snick-a-doo@comcast.net>

	* track/Road_Segment.cc:
	Fix the normal vector passed from the 2-argument Road_Segment::normal().

2009-11-23  Sam Varner  <snick-a-doo@comcast.net>

	* track/Strip_Track.cc: Fixed bump discontinuity at segment boundaries.

	* track/Gl_Road_Segment.cc: Fixed rendering of kerb ends.

2009-11-22  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, body/Car.h, world/World.cc: Improved resetting.

	* geometry/Two_Vector.cc, geometry/Two_Vector.h, geometry/test_Two_Vector.cc:
	Added magnitude() and unit() methods.  Use const references for
	arguments where possible.  Added Boost-friendly stream operators.

	* geometry/Three_Vector.cc, geometry/Three_Vector.h, geometry/test_Three_Vector.cc:
	Added static ZERO vector.  Added non-const rotate() method.

	* world/Gl_World.cc, world/Sounds.cc, vamos/vamos.cc:
	Add default time step.

	Initialize volume in Sounds object, not Gl_World.  Added volume
	command-line argument.

	* geometry/Material.cc, geometry/Material.h, track/Road_Segment.cc, track/Road_Segment.h, track/Strip_Track.cc, track/Strip_Track.h, track/Strip_Track_Reader.cc, track/Track.h:
	Allow bumpitness to affect the x and y components of the normal
	vector.  The bump-amplitude tag of in track definition files can be a
	scalar as before, or a vector of vertical and transverse bump
	amplitudes.

	Bump function now depends on the track y-position.

	* media/Texture_Image.cc:
	Check the return value of fread() when reading in an image file.

	* geometry/Linear_Interpolator.cc, geometry/Makefile.am, geometry/Makefile.in, geometry/test_Linear_Interpolator.cc, geometry/Interpolator.cc:
	Changed interpolator endpoints.  The high point, not the low, is now
	part of the interval so that adding a an interval does not affect the
	previous.

	Added tests for linear interpolation.

2009-11-10  Sam Varner  <snick-a-doo@comcast.net>

	* data/textures/night-sky-sides.png, data/tracks/Singapore.xml:
	Added Singapore street circuit.

2009-11-07  Sam Varner  <snick-a-doo@comcast.net>

	* data/textures/Makefile.am, data/textures/Makefile.in, data/textures/blue-wall.png, data/textures/orange-yellow-kerb.png, data/tracks/Makefile.am, data/tracks/Makefile.in, data/tracks/Valencia.xml, data/tracks/Yas_Marina.xml, data/sounds/Makefile.in, data/textures/100-vertical.png, data/textures/150-vertical.png, data/textures/50-vertical.png:
	Added Valencia track.

	* data/sounds/Makefile.am, data/sounds/Makefile.in, data/sounds/f1-v8.wav:
	Added V8 Formula 1 engine sample.

	* body/Suspension.cc, body/Suspension.h:
	The suspension now moves in an arc centered on the hinge regardless of
	where the hinge is placed.  Previously, a hing position directly ahead
	of or behind the wheel was assumed.

	* track/Road_Segment.cc, track/Strip_Track.cc, geometry/Three_Vector.cc, geometry/Three_Vector.h, geometry/test_Three_Vector.cc, body/Gl_Car.cc, body/test_Car.cc:
	Changed Three_Vector::rotate() to take a Three_Vector argument instead
	of three doubles.

2009-10-20  Sam Varner  <snick-a-doo@comcast.net>

	* data/sounds/default-sounds.xml, data/sounds/kerb.wav, data/tracks/Albert_Park.xml, data/tracks/Bahrain.xml, data/tracks/Catalunya.xml, data/tracks/Curl.xml, data/tracks/D.xml, data/tracks/Fuji.xml, data/tracks/Hockenheimring.xml, data/tracks/Hungaroring.xml, data/tracks/Imola.xml, data/tracks/Indianapolis.xml, data/tracks/Interlagos.xml, data/tracks/Istanbul.xml, data/tracks/Kyalami.xml, data/tracks/Laguna_Seca.xml, data/tracks/Le_Mans.xml, data/tracks/Magny-Cours.xml, data/tracks/Makefile.am, data/tracks/Makefile.in, data/tracks/Monaco.xml, data/tracks/Monza-1967.xml, data/tracks/Monza-Bank.xml, data/tracks/Monza.xml, data/tracks/Mosport.xml, data/tracks/Nurburgring.xml, data/tracks/Peanut.xml, data/tracks/Road_Atlanta.xml, data/tracks/Sepang.xml, data/tracks/Shanghai.xml, data/tracks/Silverstone.xml, data/tracks/Spa.xml, data/tracks/Suzuka.xml, data/tracks/Villeneuve.xml, data/tracks/Watkins_Glen.xml, data/tracks/Yas_Marina.xml, data/tracks/default-track.xml, data/tracks/drag.xml, data/tracks/jump.xml, data/tracks/pit.xml, geometry/Material.h, track/Strip_Track_Reader.cc, world/Gl_World.cc, world/Sounds.cc, world/Sounds.h:
	Added sound when riding the curbs.

2009-10-19  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Yas_Marina.xml: Added Yas Marina (Abu Dhabi) circuit.

	* data/textures/concrete.png: Added concrete texture file.

	* data/tracks/Monza-Bank.xml: Added Monza track with banking.

2009-10-11  Sam Varner  <snick-a-doo@comcast.net>

	* world/Robot_Driver.cc, world/Robot_Driver.h: Fixed left lane shift.

2009-10-08  Sam Varner  <snick-a-doo@comcast.net>

	* doc/how-to-profile.org: Added document telling how to profile

	* data/controls/default-controls.xml, world/Gl_World.cc, world/Gl_World.h:
	Allow turning off graphics to let the simulation run at high speed.

	* track/Road_Segment.cc, track/Road_Segment.h, track/Strip_Track.cc, track/Strip_Track.h, track/Strip_Track_Reader.cc:
	Allow specifying a maximum distance for the racing line adjustment.

2009-09-19  Sam Varner  <snick-a-doo@comcast.net>

	* scripts/random_track.py:
	Add racing line parameters to generated tracks.

2009-09-18  Sam Varner  <snick-a-doo@comcast.net>

	* world/Gl_World.cc, world/Robot_Driver.cc, world/Robot_Driver.h, world/World.cc, world/World.h, track/Strip_Track.cc, track/Strip_Track.h, vamos/vamos.cc:
	Add option to turn off car-to-car interactions.

	Adjust robot speed when driving off the racing line.

2009-07-16  Sam Varner  <snick-a-doo@comcast.net>

	* world/Robot_Driver.cc: Improved crash avoidance.

	* world/World.cc:
	Don't check for collisions between cars that are far apart.  This
	speeds things up a little.

	* vamos/vamos.cc, track/Road_Segment.cc, track/Road_Segment.h, track/Strip_Track.cc, track/Strip_Track.h, track/Strip_Track_Reader.cc:
	Set the racing line margin (minimum distance from edge of track) in
	the track file.  Provide access to margin position for robots.

2009-07-11  Sam Varner  <snick-a-doo@comcast.net>

	* world/Driver.h, world/Robot_Driver.cc, world/Robot_Driver.h, world/World.cc, world/World.h:
	Compensate for loss of downforce in computer-controlled cars.

2009-07-10  Sam Varner  <snick-a-doo@comcast.net>

	* world/Robot_Driver.cc, world/Robot_Driver.h:
	Better braking for collision avoidance.

	Removed Crash_Car_Info structure.  It was made unnecessary by
	reorganizing the code a little.

2009-07-05  Sam Varner  <snick-a-doo@comcast.net>

	* world/World.cc:
	Remove the distinction between single- and multiple-contact points.

	* world/Gl_World.cc, world/Sounds.cc, world/Sounds.h:
	Added master volume control.

	* vamos/vamos.cc:
	Put cars initially in a staggered starting grid formation.

	* track/Strip_Track.cc:
	Handle track-to-world conversion for points off the ends of open tracks.

	* body/Particle.h, body/Rigid_Body.cc, body/Rigid_Body.h, body/Wheel.h:
	Remove the distinction between single- and multiple-contact points.

	Allow multiple temporary contact points.

	* body/Gl_Car.cc: Handle cars with no engine sample

2009-06-28  Sam Varner  <snick-a-doo@comcast.net>

	* world/Gl_World.cc, world/World.cc: Allow cars without drivers.

	* geometry/Interpolator.cc, geometry/Interpolator.h, geometry/Linear_Interpolator.cc, geometry/Linear_Interpolator.h, geometry/Makefile.am, geometry/Makefile.in, geometry/Spline.cc, geometry/Spline.h, geometry/Three_Matrix.cc, geometry/Three_Matrix.h, geometry/Three_Vector.cc, geometry/Three_Vector.h:
	Optimizations.  Inlined vector math.  Cache indices for interpolators.

	* data/sounds/default-sounds.xml: Adjusted volumes

	* data/cars/F1-stator.ac:
	Made new stator AC3D file.  The old one had an error that degraded
	performance for the F1 car.

2009-06-22  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/Numeric.h: Fixed range for wrap().

	* world/Robot_Driver.cc, world/Robot_Driver.h, world/World.h:
	Added preliminary support for robots driving off the racing line.

	* track/Strip_Track.cc:
	Require good segment index guesses for world-to-track coordinate
	transformation.

2009-06-21  Sam Varner  <snick-a-doo@comcast.net>

	* vamos/vamos.cc:
	Use getopt to parse options.  Show file name when a file can't be found.

2009-06-19  Sam Varner  <snick-a-doo@comcast.net>

	* world/Robot_Driver.cc, world/Robot_Driver.h:
	Brake to avoid running into the back of another car.

	* body/Car.h, body/Gl_Car.cc, body/Gl_Car.h, media/Sample.cc, world/Gl_World.cc, world/Sounds.cc, world/Sounds.h, world/World.cc:
	Play all cars' engine sounds all the time.  Use inverse distance
	attenuation model.

2009-06-13  Sam Varner  <snick-a-doo@comcast.net>

	* vamos/vamos.cc, world/World.cc, world/World.h:
	Added demo flag for showing robots without a player.

-- 0.6.2 --
2009-06-13  Sam Varner  <snick-a-doo@comcast.net>

	* world/Gl_World.cc, world/Gl_World.h: Added chase view.

2009-06-11  Sam Varner  <snick-a-doo@comcast.net>

	* world/Robot_Driver.cc, world/Robot_Driver.h:
	Use racing line distance to set the braking offset.

2009-06-09  Sam Varner  <snick-a-doo@comcast.net>

	* track/Strip_Track.cc, track/Strip_Track.h, world/Robot_Driver.cc, world/Robot_Driver.h:
	Minor racing line fixes to get the curvature right on shortened tracks.

2009-06-07  Sam Varner  <snick-a-doo@comcast.net>

	* track/Strip_Track.cc, track/Strip_Track.h:
	Made splines join smoothly at the start/finish line.

	Use linear interpolation for distance.

	* geometry/Interpolator.h, geometry/Linear_Interpolator.h, geometry/Numeric.h, geometry/Spline.cc, geometry/Spline.h, geometry/test_Spline.cc:
	Added two-argument (x, y) load functions for interpolators.

	Added wrap() for constraining a number to an interval.

2009-06-05  Sam Varner  <snick-a-doo@comcast.net>

	* track/Strip_Track.h, track/Strip_Track_Reader.cc, world/Robot_Driver.cc, world/Robot_Driver.h, track/Strip_Track.cc:
	Factored Racing_Line class out of Road.

	Use same calculation for drawing the driver's target as for the
	sterring calculation.

2009-06-02  Sam Varner  <snick-a-doo@comcast.net>

	* world/Robot_Driver.cc:
	Include the current speed and racing line speed when setting the throttle.

2009-06-01  Sam Varner  <snick-a-doo@comcast.net>

	* data/cars/F1.xml, data/tracks/Albert_Park.xml, data/tracks/Bahrain.xml, data/tracks/Catalunya.xml, data/tracks/Imola.xml, data/tracks/Interlagos.xml, data/tracks/Magny-Cours.xml, data/tracks/Monaco.xml, data/tracks/Monza.xml, data/tracks/Nurburgring.xml, data/tracks/Sepang.xml, data/tracks/Shanghai.xml, data/tracks/Spa.xml, data/tracks/Suzuka.xml, data/tracks/default-track.xml:
	Adjusted for racing line.

	* body/Car.cc, body/Car.h, body/Tire.h, body/Wheel.h, geometry/Numeric.h, world/Robot_Driver.cc, world/Robot_Driver.h:
	Account for front/rear weight balance when calculating maximum speed
	from curvature.

2009-05-26  Sam Varner  <snick-a-doo@comcast.net>

	* track/Strip_Track.cc, track/Strip_Track.h:
	Fixed redering of the racing line nodes.

2009-05-25  Sam Varner  <snick-a-doo@comcast.net>

	* track/Road_Segment.cc, track/Road_Segment.h, track/Strip_Track.cc, track/Strip_Track_Reader.cc:
	Added "racing line curvature" factor for road segments.

	* body/Car.cc, body/Car.h, geometry/PID.cc, geometry/PID.h, track/Strip_Track.cc, world/Robot_Driver.cc, world/Robot_Driver.h:
	Provide direct steering (no non-linearity or speed-sensitivity) for
	robot drivers

	Added method for getting the latest PID value.

	Make the parameter for the racing line parametric spline correspond to
	distance along the track, not distance along the curve.  This is so
	that we can interpolate to a track coordinate.

	Added Braking and Racing_Line classes to Robot_Driver.
	Fixed transformations for determining the steering angle.
	Fixed oscillation near sharp turns.
	Use traction control during start.
	Use direct steering.
	Added margin for braking and acceleration.

2009-05-18  Sam Varner  <snick-a-doo@comcast.net>

	* track/Gl_Road_Segment.cc, track/Makefile.am, track/Makefile.in, track/Road_Segment.cc, track/Road_Segment.h, track/Strip_Track.cc, track/Strip_Track.h, track/Strip_Track_Reader.cc:
	Add racing line adjustments.

	* world/Makefile.am, world/Makefile.in, world/Robot_Driver.cc, world/Robot_Driver.h:
	Improved robot performance under braking.

	* vamos/vamos.cc, media/Ac3d.cc, media/Makefile.am, media/Makefile.in:
	Fix compile errors for GCC 4.3.

	* geometry/Makefile.am, geometry/Makefile.in, geometry/Numeric.h:
	Added abs_min() numeric function.

	* data/tracks/Albert_Park.xml, data/tracks/Bahrain.xml, data/tracks/Catalunya.xml, data/tracks/Hungaroring.xml, data/tracks/Imola.xml, data/tracks/Monza.xml, data/tracks/Sepang.xml, data/tracks/Shanghai.xml, data/tracks/Spa.xml, data/tracks/Suzuka.xml, data/tracks/default-track.xml:
	Add racing line adjustments.

	* data/cars/F1.xml, data/cars/default-car.xml: Update for Robot_Driver.

	* caelum/Sky.cc: Fix compile errors for GCC 4.3.

	* body/Aerodynamic_Device.cc, body/Aerodynamic_Device.h, body/Car.h, body/Car_Reader.cc, body/Contact_Point.h, body/Makefile.am, body/Makefile.in, body/Particle.h, body/Rigid_Body.cc, body/Rigid_Body.h:
	Make aerodynamic forces available to Robot_Driver.

	Fix compile errors for GCC 4.3.

2009-05-04  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Catalunya.xml, data/tracks/Interlagos.xml:
	Updated Catalunya track with new chicane.

	* body/Car.cc, body/Car.h, body/Engine.cc, body/Engine.h, body/Rigid_Body.cc, body/Rigid_Body.h, geometry/Circular_Buffer.lo, geometry/Numeric.h, world/Driver.h, world/Interactive_Driver.cc, world/Robot_Driver.cc, world/Robot_Driver.h, world/World.cc, world/World.h:
	Ignore shifts to the current gear.  In particular, don't reset the
	delay timer.

	Added 2-arg and 4-are abs_max to numerics.

	Improved robot performance
	1. Shift based on power, not torque.
	2. Consider transverse slip for acceleration and downshifting.

	Added some grounwork for collision detection.

2008-10-22  Sam Varner  <snick-a-doo@comcast.net>

	* world/World.cc, world/World.h:
	Allow the slipstream to cross the start/finish line.

	* body/Car.cc, body/Car.h, body/Gl_Car.cc, body/Rigid_Body.h:
	Show air density with the "dashbord extra" parameters.

	* ChangeLog: Correct e-mail address.

	* data/cars/F1-1967.xml, data/cars/F1.xml, data/cars/GT.xml, data/cars/default-car.xml, data/sounds/default-sounds.xml:
	Use lower volumes for sounds.

2008-10-18  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/Circular_Buffer.h, geometry/Circular_Buffer.lo, geometry/Makefile.am, geometry/Makefile.in:
	Added circular buffer class to support slipstream.

	* track/Strip_Track.cc:
	Prevent the last control point in the racing line from being too close
	to the first.  This fixes instability in racing line on some tracks.

	* body/Car.h, body/Gl_Car.cc, body/Rigid_Body.cc, body/Rigid_Body.h, world/Gl_World.cc, world/Gl_World.h, world/World.cc, world/World.h:
	Added slipstream.  Aerodynamic drag (and lift) decreases when
	following another car.

2008-09-22  Sam Varner  <snick-a-doo@comcast.net>

	* body/body.vcproj, geometry/geometry.vcproj, track/track.vcproj, vamos/vamos.vcproj, world/world.vcproj:
	Removed out-of-date VC project files.

-- 0.6.1 --
2008-09-20  Sam Varner  <snick-a-doo@comcast.net>

	* track/Road_Segment.cc:
	Fixed handling of off-the-end points in the world-to-track coordinates
	conversion.

2008-09-19  Sam Varner  <snick-a-doo@comcast.net>

	* track/Strip_Track.cc, track/Strip_Track.h, vamos/vamos.cc:
	Don't calculate the racing line if it's not shown or used by
	computer-controlled cars.

2008-09-17  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Le_Mans.xml: Added the Le Mans track.

	* world/Robot_Driver.cc, world/Robot_Driver.h:
	Provide a mechanism for getting the tires' transverse slip ratios.

	* vamos/vamos.cc: Require a -P option to pass optional parameters.

	* track/Strip_Track.cc:
	Calculate the racing line interval from the track width.

	Allow tracks to be joined with no adjustment with <circuit segments="0"/>.

	* data/tracks/Peanut.xml, data/tracks/Albert_Park.xml, data/tracks/Bahrain.xml, data/tracks/Hungaroring.xml, data/tracks/Magny-Cours.xml, data/tracks/Suzuka.xml, data/tracks/drag.xml, data/tracks/skid_pad.xml:
	Show racing line on some tracks.

	* data/cars/F1-1967.xml, data/cars/F1.xml, data/cars/GT.xml, data/cars/default-car.xml:
	Updated robot parameters.

2008-09-15  Sam Varner  <snick-a-doo@comcast.net>

	* body/Gl_Car.cc, body/Tire.cc, body/Tire.h, body/Wheel.cc, body/Wheel.h, data/cars/F1.xml, data/cars/default-car.xml, geometry/Spline.cc, geometry/Spline.h, track/Strip_Track.cc, track/Strip_Track.h, world/Robot_Driver.cc, world/Robot_Driver.h:
	Get both longitudinal and transverse slip ratios from
	Tire_Friction to Robot_Drver.

	Updated performance parameters for the default and F1 cars.

	Added slope arguments to Parametric_Spline.

	Fixed problems with closed-circuit racing line calculation.

	Avoid updating the PID object twice in one time step.

2008-09-13  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/Spline.cc, geometry/Spline.h, track/Gl_Road_Segment.cc, track/Strip_Track.cc, track/Strip_Track.h, vamos/vamos.cc, world/Robot_Driver.cc:
	Added 2-d parametric spline class.  Used it to interpolate the racing
	line.

2008-09-09  Sam Varner  <snick-a-doo@comcast.net>

	* data/cars/default-car.xml, track/Strip_Track.cc, track/Strip_Track.h, world/Robot_Driver.cc, world/Robot_Driver.h:
	Robot drivers now use the curvature of the racing line to determine
	cornering speed.

2008-09-04  Sam Varner  <snick-a-doo@comcast.net>

	* track/Gl_Road_Segment.cc, track/Road_Segment.cc, track/Strip_Track.cc, track/Strip_Track.h:
	Implement skewed transformation from track to world in class
	Road_Segement.  Use this transformation in Gl_Road_Segment for
	rendering the track.

	Allow variable intervals for points on the racing line.

2008-08-25  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.h, data/cars/default-car.xml, scripts/random_track.py, track/Strip_Track.cc, track/Strip_Track.h, vamos/vamos.cc, world/Robot_Driver.cc, world/Robot_Driver.h:
	Use flexible strip modeling to determine the racing line.

	Improved the robot driver's ability to recover after going off the
	track.

	Improved the random-track script to avoid very tight turns and to make
	elevation changes more random.

2008-05-02  Sam Varner  <snick-a-doo@comcast.net>

	* world/Driver.h, world/Gl_World.cc, world/Robot_Driver.cc, world/Robot_Driver.h, world/World.cc:
	Impoved driver and collisions.

	* track/Road_Segment.cc, track/Road_Segment.h, track/Strip_Track.cc:
	Tweaked racing line calculation.

	* media/Texture_Image.cc: Unbind textures after drawing.

	* geometry/Spline.cc:
	Handle loading of the first point of a spline path.

	* body/Car.cc, body/Car.h, body/Dashboard.cc, body/Gl_Car.cc, body/Makefile.am, body/Makefile.in, body/Rigid_Body.cc, body/test_Car.cc:
	Stabilized car-car collisions.

2008-04-18  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, body/Car.h, body/Car_Reader.cc, data/cars/F1.xml, data/cars/default-car.xml, data/tracks/default-track.xml, geometry/Interpolator.h, geometry/Linear_Interpolator.cc, geometry/Linear_Interpolator.h, geometry/Spline.cc, geometry/Spline.h, geometry/test_Spline.cc, track/Strip_Track.cc, track/Strip_Track.h, world/Robot_Driver.cc, world/Robot_Driver.h:
	Implemented piecewise spline racing line for robots.  Added
	<racing-line/> tag to draw the line.  Put robot performance parameters
	in the car definition file.

2008-04-14  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/Interpolator.h, geometry/Linear_Interpolator.cc, geometry/Linear_Interpolator.h, geometry/Numeric.h, geometry/Spline.cc, geometry/Spline.h, geometry/test_Numeric.cc, geometry/test_Spline.cc, track/Strip_Track.cc, track/Strip_Track.h, track/Strip_Track_Reader.cc, world/Robot_Driver.cc, world/Robot_Driver.h:
	Moved racing line from Robot_Driver class to Strip_Track class.  Added
	<racing-line/> tag to track file reader.

2008-04-08  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.h, body/Engine.h, body/Transmission.h, geometry/Numeric.h, track/Strip_Track.h, world/Gl_World.cc, world/Robot_Driver.cc, world/Robot_Driver.h:
	Robot car improvements.  Cars accelerate, brake, and shift.  Steering
	is now stable.

2008-03-09  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/Makefile.am, geometry/Makefile.in, geometry/PID.cc, geometry/PID.h, world/Gl_World.cc, world/Gl_World.h, world/Interactive_Driver.cc, world/Interactive_Driver.h, world/Robot_Driver.cc, world/Robot_Driver.h:
	Added PID controller.  Added copyright notices to the driver files.

2008-03-03  Sam Varner  <snick-a-doo@comcast.net>

	* vamos/vamos.cc, world/Controls.cc, world/Controls.h, world/Driver.h, world/Gl_World.cc, world/Gl_World.h, world/Interactive_Driver.cc, world/Interactive_Driver.h, world/Makefile.am, world/Makefile.in, world/Robot_Driver.cc, world/Robot_Driver.h, world/World.cc, world/World.h, world/test_Controls.cc:
	Implemented driver classes: Interactive_Driver for real-time control,
	Robot_Driver for computer control.  Implemented rudimentary algorithm
	for Robot_Driver.

	* track/Strip_Track.cc, track/Strip_Track.h, track/Track.h:
	Removed distance method; expose track_coordinates instead.

	* data/tracks/Albert_Park.xml: Added pit lane to Albert Park.

	* body/Car.cc: Clip the steering angle to the maximum.

-- 0.6.0 --
2008-02-20  Sam Varner  <snick-a-doo@comcast.net>

	* Makefile.am, Makefile.in:
	Make build order of the modules mach the dependency order so that
	tests can be built.

	* track/Gl_Road_Segment.cc:
	Changed comparison so that pit lane merges that coincide with the road
	segment's resolution are handled properly.

	* geometry/Interpolator.h, geometry/Linear_Interpolator.cc, geometry/Linear_Interpolator.h, geometry/Spline.cc, geometry/Spline.h, track/Road_Segment.cc, track/Road_Segment.h, track/Strip_Track.cc, world/Gl_World.cc:
	Make the walls join at the start of the track.

2008-02-18  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, body/Car.h, body/Rigid_Body.h, track/Strip_Track.cc, track/Strip_Track.h, world/World.cc:
	Detect collisions with the end of the pit lane wall.

2008-02-16  Sam Varner  <snick-a-doo@comcast.net>

	* track/Road_Segment.cc, track/Road_Segment.h, track/Strip_Track.cc, track/Strip_Track.h, track/Strip_Track_Reader.cc:
	Handle the transition from road to pit.  Moved angle parameter from
	pit to merge section of the xml file.

2008-02-07  Sam Varner  <snick-a-doo@comcast.net>

	* body/Rigid_Body.cc, body/Rigid_Body.h, body/Wheel.cc, geometry/Material.h, track/Gl_Road_Segment.cc, track/Gl_Road_Segment.h, track/Road_Segment.h, track/Strip_Track.cc, world/World.cc:
	Improved collisions.  Avoid huge displacements of the wheels.  Don't
	allow driving above the walls.

	* geometry/Makefile.am, geometry/Makefile.in, geometry/test_Numeric.cc:
	Added tests for numerical utilities.

2008-02-02  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, body/Car.h, body/Car_Reader.cc, body/Gl_Car.cc, body/Makefile.am, body/Makefile.in, body/Rigid_Body.cc, body/Rigid_Body.h, data/cars/block.ac, data/cars/block.xml, world/Gl_World.cc, world/Sounds.cc, world/World.cc:
	Facilitate collision testing.  Allow cars without drivetrain or
	wheels.  Put car file reader in separate file.  Allow initial
	conditions to be set in car file.  Added car file for a cube.

	Fixed moment calculation which fixes collision response.

2008-01-23  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, body/Rigid_Body.cc, body/Suspension.cc, body/Tire.cc, body/Wheel.cc:
	Fixed transformations.  Fixed instability on kerbs.

2007-07-25  Sam Varner  <snick-a-doo@comcast.net>

	* body/Makefile.am, body/Makefile.in, body/test_Particle.cc, world/Gl_World.cc, world/Gl_World.h:
	Added glutInit() and removed dependency on SDL-TTF.

2007-07-16  Sam Varner  <snick-a-doo@comcast.net>

	* body/Aerodynamic_Device.cc, body/Aerodynamic_Device.h, body/Contact_Point.cc, body/Contact_Point.h, body/Engine.cc, body/Exerter.cc, body/Exerter.h, body/Fuel_Tank.h, body/Makefile.am, body/Makefile.in, body/Particle.cc, body/Particle.h, body/Suspension.cc, body/Tire.cc, body/Tire.h, body/Wheel.cc, body/Wheel.h:
	Removed unnecessary classes Aerodynamic_Device and Exerter.

2007-07-15  Sam Varner  <snick-a-doo@comcast.net>

	* track/Strip_Track.h, track/Strip_Track_Reader.cc, body/Aerodynamic_Device.cc, body/Aerodynamic_Device.h, body/Car.cc, body/Car.h, body/Contact_Point.cc, body/Contact_Point.h, body/Engine.cc, body/Engine.h, body/Frame.cc, body/Frame.h, body/Fuel_Tank.cc, body/Fuel_Tank.h, body/Gl_Car.cc, body/Makefile.am, body/Makefile.in, body/Particle.cc, body/Particle.h, body/Rigid_Body.cc, body/Rigid_Body.h, body/Suspension.cc, body/Suspension.h, body/Tire.cc, body/Tire.h, body/Wheel.cc, body/Wheel.h, body/test_Frame.cc, body/test_Rigid_Body.cc, geometry/Makefile.am, geometry/Makefile.in, geometry/Three_Matrix.cc, geometry/Three_Matrix.h, geometry/test_Three_Matrix.cc, media/Ac3d.cc, media/XML_Parser.cc, media/XML_Parser.h, media/test_XML_Parser.cc, vamos/vamos.cc, world/Gl_World.cc, world/Gl_World.h, world/Sounds.cc, world/Sounds.h, world/World.cc:
	Added the ability to transfrom vectors to and from the world frame.

2007-06-09  Sam Varner  <snick-a-doo@comcast.net>

	* caelum/Cylinder_Sky.cc, caelum/Cylinder_Sky.h, caelum/Makefile.am, caelum/Makefile.in, caelum/Sky.cc, caelum/Sky.h, caelum/Sphere_Sky.cc, caelum/Sphere_Sky.h, caelum/caelum.cc, vamos/Makefile.am, vamos/Makefile.in, world/Gl_World.cc, world/Gl_World.h:
	Updated Caelum to use SDL.

	* body/Car.h, data/tracks/Interlagos.xml, geometry/Makefile.am, geometry/Makefile.in, geometry/XML_Parser.cc, geometry/XML_Parser.h, geometry/test_XML_Parser.cc, media/Makefile.am, media/Makefile.in, media/XML_Parser.cc, media/XML_Parser.h, media/test_XML_Parser.cc, track/Strip_Track.h, world/Gl_World.h, world/Makefile.am, world/Makefile.in, world/Sounds.h:
	Moved XML_Parser from geometry to media.

-- 0.5.7 --
2007-06-09  Sam Varner  <snick-a-doo@comcast.net>

	* caelum/Cylinder_Sky.cc, caelum/Cylinder_Sky.h, caelum/Makefile.am, caelum/Makefile.in, caelum/Sky.cc, caelum/Sky.h, caelum/Sphere_Sky.cc, caelum/Sphere_Sky.h, caelum/caelum.cc, vamos/Makefile.am, vamos/Makefile.in, world/Gl_World.cc, world/Gl_World.h:
	Updated Caelum to use SDL.

	* body/Car.h, data/tracks/Interlagos.xml, geometry/Makefile.am, geometry/Makefile.in, geometry/XML_Parser.cc, geometry/XML_Parser.h, geometry/test_XML_Parser.cc, media/Makefile.am, media/Makefile.in, media/XML_Parser.cc, media/XML_Parser.h, media/test_XML_Parser.cc, track/Strip_Track.h, world/Gl_World.h, world/Makefile.am, world/Makefile.in, world/Sounds.h:
	Moved XML_Parser from geometry to media.

	* body/Car.h, body/Gl_Car.cc, body/Rigid_Body.cc, body/Rigid_Body.h, data/worlds/default-world.xml, geometry/Makefile.am, geometry/Makefile.in, geometry/test_Rectangle.cc, geometry/test_Spline.cc, geometry/test_Three_Vector.cc, geometry/test_Two_Vector.cc, geometry/test_XML_Parser.cc, media/Sample.cc, media/Sample.h, track/Makefile.am, track/Makefile.in, track/test_Road_Segment.cc, world/Gl_World.cc, world/Makefile.am, world/Makefile.in, world/Sounds.cc, world/Sounds.h, world/test_Controls.cc:
	Added doppler shifts, distance attenuation, and direction sound
	sources with OpenAL.

	Updated tests to work with the current Boost.

2007-05-28  Sam Varner  <snick-a-doo@comcast.net>

	* body/Gl_Car.cc, configure, configure.ac, data/cars/default-car.xml, data/sounds/engine.wav, data/sounds/f1-engine.wav, media/Sample.cc, media/Sample.h, vamos/Makefile.am, vamos/Makefile.in, world/Gl_World.cc, world/Sounds.cc, world/Sounds.h:
	Use OpenAL for sound.

2007-05-21  Sam Varner  <snick-a-doo@comcast.net>

	* data/controls/mouse.xml, world/Controls.cc, world/Controls.h, world/Gl_World.cc, world/Gl_World.h, world/Makefile.am, world/Makefile.in, world/test_Controls.cc:
	Handle deadbands in controls.
	Added tests for controls.

2007-05-20  Sam Varner  <snick-a-doo@comcast.net>

	* scripts/graph.sh: Added a script for generating dependency graphs.

	* configure, configure.ac, data/controls/clutch-wheel.xml, data/controls/default-controls.xml, data/controls/mouse.xml, data/controls/stick.xml, data/controls/throttle-wheel.xml, vamos/Makefile.am, vamos/Makefile.in, world/Controls.cc, world/Controls.h, world/Gl_World.cc, world/Gl_World.h:
	Re-worked controls system using SDL instead of plib for handling
	joystick events.

	* body/Car.cc, body/Drivetrain.cc, body/Drivetrain.h, body/Suspension.cc, body/Suspension.h, body/Wheel.cc, body/Wheel.h, geometry/Constants.h, track/Gl_Road_Segment.cc, track/Gl_Road_Segment.h, track/Road_Segment.cc, track/Road_Segment.h, track/Strip_Track.h, track/Strip_Track_Reader.cc:
	Absorbed Side enumeration into Direction.

2007-05-09  Sam Varner  <snick-a-doo@comcast.net>

	* data/controls/mouse.xml, world/Controls.cc, world/Gl_World.cc, world/Gl_World.h:
	Repaired mouse control and window resizing.

	* data/tracks/pit.xml: Added pit lane test track.

	* configure, configure.ac, geometry/Constants.h, vamos/Makefile.am, vamos/Makefile.in, vamos/vamos.cc, world/Controls.cc, world/Controls.h, world/Gl_World.cc, world/Gl_World.h, world/Makefile.am, world/Makefile.in:
	Use SDL for video and event handling.  Remove sigc++ dependency.  Add
	full-scree option.

2007-05-02  Sam Varner  <snick-a-doo@comcast.net>

	* body/Gl_Car.cc, media/Sample.cc, media/Sample.h, world/Sounds.cc:
	Fixed crash related to the engine sound when reloading the car
	definition file.

-- 0.5.6 --
2007-05-02  Sam Varner  <snick-a-doo@comcast.net>

	* body/Gl_Car.cc, media/Sample.cc, media/Sample.h, world/Sounds.cc:
	Fixed crash related to the engine sound when reloading the car
	definition file.

2007-04-30  Sam Varner  <snick-a-doo@comcast.net>

	* track/Road_Segment.cc, track/Strip_Track.cc, track/Strip_Track.h:
	Fixed initial direction for cars.

	Fixed collision with walls at the expense of pit lane entry detection.

2007-04-29  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Spa.xml: Adjusted Spa to satellite photo.

	* body/Aerodynamic_Device.cc, body/Brake.cc, body/Car.cc, body/Clutch.cc, body/Contact_Point.cc, body/Dashboard.cc, body/Differential.cc, body/Drivetrain.cc, body/Engine.cc, body/Exerter.cc, body/Frame.cc, body/Fuel_Tank.cc, body/Gl_Car.cc, body/Makefile.am, body/Makefile.in, body/Particle.cc, body/Rigid_Body.cc, body/Suspension.cc, body/Tire.cc, body/Transmission.cc, body/Wheel.cc, caelum/Makefile.am, caelum/Makefile.in, geometry/Inertia_Tensor.cc, geometry/Linear_Interpolator.cc, geometry/Makefile.am, geometry/Makefile.in, geometry/Material.cc, geometry/Rectangle.cc, geometry/Spline.cc, geometry/Three_Matrix.cc, geometry/Three_Vector.cc, geometry/Two_Vector.cc, geometry/XML_Parser.cc, geometry/test_Rectangle.cc, geometry/test_Spline.cc, geometry/test_Three_Vector.cc, geometry/test_Two_Vector.cc, geometry/test_XML_Parser.cc, media/Ac3d.cc, media/Makefile.am, media/Makefile.in, media/Sample.cc, media/Texture_Image.cc, track/Gl_Road_Segment.cc, track/Makefile.am, track/Makefile.in, track/Road_Segment.cc, track/Strip_Track.cc, track/Strip_Track_Reader.cc, track/test_Road_Segment.cc, world/Atmosphere.cc, world/Controls.cc, world/Gl_World.cc, world/Makefile.am, world/Makefile.in, world/Sounds.cc, world/World.cc:
	Include local headers (e.g. "file.h") instead of system headers (e.g. <file.h>).

	* Makefile.am, Makefile.in, body/Aerodynamic_Device.h, body/Brake.h, body/Car.h, body/Clutch.h, body/Contact_Point.h, body/Dashboard.h, body/Differential.h, body/Drivetrain.h, body/Engine.h, body/Exerter.h, body/Frame.h, body/Fuel_Tank.h, body/Gl_Car.h, body/Particle.h, body/Rigid_Body.h, body/Suspension.h, body/Tire.h, body/Transmission.h, body/Wheel.h, configure, configure.ac, geometry/Constants.h, geometry/Contact_Info.h, geometry/Conversions.h, geometry/Inertia_Tensor.h, geometry/Interpolator.h, geometry/Linear_Interpolator.h, geometry/Material.h, geometry/Numeric.h, geometry/Rectangle.h, geometry/Spline.h, geometry/Three_Matrix.h, geometry/Three_Vector.h, geometry/Two_Vector.h, geometry/XML_Parser.h, include/Makefile.am, include/Makefile.in, include/vamos/Makefile.am, include/vamos/Makefile.in, include/vamos/body/Aerodynamic_Device.h, include/vamos/body/Brake.h, include/vamos/body/Car.h, include/vamos/body/Clutch.h, include/vamos/body/Contact_Point.h, include/vamos/body/Dashboard.h, include/vamos/body/Differential.h, include/vamos/body/Drivetrain.h, include/vamos/body/Engine.h, include/vamos/body/Exerter.h, include/vamos/body/Frame.h, include/vamos/body/Fuel_Tank.h, include/vamos/body/Gl_Car.h, include/vamos/body/Makefile.am, include/vamos/body/Makefile.in, include/vamos/body/Particle.h, include/vamos/body/Rigid_Body.h, include/vamos/body/Suspension.h, include/vamos/body/Tire.h, include/vamos/body/Transmission.h, include/vamos/body/Wheel.h, include/vamos/geometry/Constants.h, include/vamos/geometry/Contact_Info.h, include/vamos/geometry/Conversions.h, include/vamos/geometry/Inertia_Tensor.h, include/vamos/geometry/Interpolator.h, include/vamos/geometry/Linear_Interpolator.h, include/vamos/geometry/Makefile.am, include/vamos/geometry/Makefile.in, include/vamos/geometry/Material.h, include/vamos/geometry/Numeric.h, include/vamos/geometry/Rectangle.h, include/vamos/geometry/Spline.h, include/vamos/geometry/Three_Matrix.h, include/vamos/geometry/Three_Vector.h, include/vamos/geometry/Two_Vector.h, include/vamos/geometry/XML_Parser.h, include/vamos/media/Ac3d.h, include/vamos/media/Makefile.am, include/vamos/media/Makefile.in, include/vamos/media/Sample.h, include/vamos/media/Texture_Image.h, include/vamos/track/Gl_Road_Segment.h, include/vamos/track/Makefile.am, include/vamos/track/Makefile.in, include/vamos/track/Road_Segment.h, include/vamos/track/Strip_Track.h, include/vamos/track/Track.h, include/vamos/world/Atmosphere.h, include/vamos/world/Controls.h, include/vamos/world/Gl_World.h, include/vamos/world/Makefile.am, include/vamos/world/Makefile.in, include/vamos/world/Sounds.h, include/vamos/world/World.h, media/Ac3d.h, media/Sample.h, media/Texture_Image.h, track/Gl_Road_Segment.h, track/Road_Segment.h, track/Strip_Track.h, track/Track.h, world/Atmosphere.h, world/Controls.h, world/Gl_World.h, world/Sounds.h, world/World.h:
	Moved headers from the include/ tree to the source directories.

2007-03-19  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/default-track.xml: Added pits.

	* data/tracks/Bahrain.xml: Matched to satellite photo.

	* geometry/Three_Vector.cc, include/vamos/geometry/Constants.h, include/vamos/geometry/Interpolator.h, include/vamos/geometry/Linear_Interpolator.h, include/vamos/geometry/Numeric.h, include/vamos/geometry/Spline.h, include/vamos/geometry/Three_Vector.h, include/vamos/track/Gl_Road_Segment.h, include/vamos/track/Road_Segment.h, include/vamos/track/Strip_Track.h, include/vamos/track/Track.h, track/Gl_Road_Segment.cc, track/Road_Segment.cc, track/Strip_Track.cc, track/Strip_Track_Reader.cc:
	Pit lane enhancements.

	* body/Makefile.am, body/Makefile.in, geometry/Makefile.am, geometry/Makefile.in, media/Makefile.am, media/Makefile.in, track/Makefile.am, track/Makefile.in, vamos/Makefile.am, vamos/Makefile.in, world/Makefile.am, world/Makefile.in:
	Removed -gstabs+ from compiler options.  Causes compilation to fail.

	* caelum/Cylinder_Sky.cc, caelum/Sky.cc, caelum/Sky.h, caelum/caelum.cc:
	Fixed memory management problems that prevented the image from being drawn.

2006-10-20  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Fuji.xml: Added Fuji speedway.

2006-10-09  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Interlagos.xml, data/tracks/Laguna_Seca.xml:
	Adjusted tracks to match satellite image.

	* include/vamos/world/Gl_World.h, world/Gl_World.cc:
	Fixed time-warp after pausing.

2006-04-09  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, data/sounds/default-sounds.xml, include/vamos/body/Car.h, world/Sounds.cc:
	Adjusted tire squeal volume calculation.

	* track/Road_Segment.cc:
	Account for non-parallel barriers when finding their normal vectors.

2006-04-08  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Albert_Park.xml: Adjusted according to satellite photo.

2005-12-01  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, body/Rigid_Body.cc, include/vamos/body/Car.h, include/vamos/geometry/Contact_Info.h, include/vamos/geometry/Makefile.am, include/vamos/geometry/Makefile.in, include/vamos/track/Strip_Track.h, include/vamos/track/Track.h, include/vamos/world/Gl_World.h, include/vamos/world/World.h, world/Gl_World.cc, world/World.cc:
	Handle interaction between cars.

2005-11-25  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Imola.xml: Matched satellite image.

2005-11-10  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Silverstone.xml: Corrected with sattelite photo.

	* include/vamos/geometry/Numeric.h, body/Differential.cc, body/Suspension.cc, body/Tire.cc, include/vamos/geometry/Conversions.h, include/vamos/geometry/Makefile.am, include/vamos/geometry/Makefile.in, track/Road_Segment.cc, track/Strip_Track.cc, world/Controls.cc, world/Sounds.cc:
	Moved numeric utilities from Conversions.h to Numeric.h.

	* body/Gl_Car.cc, body/Rigid_Body.cc, include/vamos/body/Rigid_Body.h:
	Fixed rigid body transformations.
	Provide a temporary contact point.

	* body/Frame.cc, include/vamos/body/Frame.h:
	Added velocity transformations.

-- 0.5.5 --
2005-10-26  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Magny-Cours.xml: Adjusted track to match satellite photo.

2005-10-24  Sam Varner  <snick-a-doo@comcast.net>

	* include/vamos/track/Road_Segment.h, include/vamos/track/Strip_Track.h, track/Gl_Road_Segment.cc, track/Road_Segment.cc, track/Strip_Track.cc, track/Strip_Track_Reader.cc, track/test_Road_Segment.cc, world/Gl_World.cc:
	Fixed skew calculations.

	Added preliminary pit lane support.

	Allow background images for map view.

	* doc/vamos.info-2, doc/vamos.info-1: Removed extra info files.

2005-10-18  Sam Varner  <snick-a-doo@comcast.net>

	* doc/circles.eps, doc/curve.eps, doc/overlap.eps, doc/straight.eps, doc/track-coordinates.lisp, doc/track-coordinates.tex:
	Added track coordinates document, code, and figures.

2005-09-18  Sam Varner  <snick-a-doo@comcast.net>

	* world/World.cc:
	Place car on track when resetting with car in pit lane.

	* doc/vamos.texi: Documented circuit tag for tracks.

	* data/tracks/Interlagos.xml: Added pit lane.

	* geometry/Three_Vector.cc, geometry/test_Three_Vector.cc, include/vamos/geometry/Three_Vector.h, track/Strip_Track.cc:
	Fixed pit lane joining when the section of track being joined to is
	not along the world x-axis.

2005-09-14  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/Spline.cc, include/vamos/geometry/Spline.h, include/vamos/track/Strip_Track.h, include/vamos/track/Track.h, track/Strip_Track.cc, track/Strip_Track_Reader.cc:
	Allow the slope at the beginning of the track to be specified.

	Allow different strategies for closing the track to be specified.

2005-08-29  Sam Varner  <snick-a-doo@comcast.net>

	* TODO, body/Suspension.cc, body/Tire.cc, data/cars/F1-1967.xml, data/cars/F1.xml, data/cars/default-car.xml:
	Handle assymetry in the friction functions (e.g. camber thrust).
	Added camber parameters to the friction coefficients.

2005-08-27  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, body/Engine.cc, geometry/Spline.cc, include/vamos/body/Engine.h:
	Added friction parameter to torque curve.

2005-08-25  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, body/Engine.cc, geometry/Spline.cc, include/vamos/body/Engine.h, include/vamos/geometry/Conversions.h, include/vamos/geometry/Interpolator.h, include/vamos/geometry/Linear_Interpolator.h, include/vamos/geometry/Spline.h:
	Allow user-defined torque curves.

2005-08-23  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Istanbul.xml: Added elevation changes to Istanbul.

2005-08-17  Sam Varner  <snick-a-doo@comcast.net>

	* track/Strip_Track_Reader.cc:
	Allow setting of pit lane widths with a single point.

	* scripts/wheels.gnuplot:
	Added file of Gnuplot commands for plotting data from wheels.

	* TODO, body/Car.cc, body/Drivetrain.cc, include/vamos/body/Drivetrain.h, include/vamos/body/Engine.h:
	Implemented auto-neutral option.  If the <auto-neutral/> tag is
	present in the <drivetrain> section, the transmission will be shifted
	to neutral whenever the engine would stall.

2005-08-15  Sam Varner  <snick-a-doo@comcast.net>

	* world/Sounds.cc: Changed tire squeal volume calculation.

	* include/vamos/track/Road_Segment.h, include/vamos/track/Strip_Track.h, include/vamos/track/Track.h, include/vamos/world/World.h, track/Road_Segment.cc, track/Strip_Track.cc, track/Strip_Track_Reader.cc, world/Gl_World.cc, world/World.cc:
	Made it possible to drive onto and off of pit lane.

2005-08-12  Sam Varner  <snick-a-doo@comcast.net>

	* include/vamos/track/Gl_Road_Segment.h, include/vamos/track/Road_Segment.h, include/vamos/track/Strip_Track.h, include/vamos/track/Track.h, track/Gl_Road_Segment.cc, track/Makefile.am, track/Makefile.in, track/Road_Segment.cc, track/Strip_Track.cc, track/Strip_Track_Reader.cc, world/Gl_World.cc:
	Refactored Strip_Track.  More pit lane work.

	* geometry/Makefile.am, geometry/Makefile.in, geometry/Rectangle.cc, geometry/test_Rectangle.cc, include/vamos/geometry/Makefile.am, include/vamos/geometry/Makefile.in, include/vamos/geometry/Rectangle.h:
	Added rectangle class and tests.

2005-08-07  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/default-track.xml, include/vamos/track/Strip_Track.h, include/vamos/track/Track.h, track/Strip_Track.cc:
	Added preliminary support for pit lanes.

2005-08-05  Sam Varner  <snick-a-doo@comcast.net>

	* track/Road_Segment.cc:
	Fixed bug in coordinate transformations that caused a crash on the
	skid pad.

	* geometry/Makefile.am, geometry/Makefile.in, geometry/Spline.cc, geometry/test_Spline.cc, include/vamos/geometry/Spline.h:
	Provided a function for returning the slope at a point on a spline.
	Added tests.

	* geometry/XML_Parser.cc, geometry/test_XML_Parser.cc, include/vamos/geometry/XML_Parser.h:
	Implemented wildcard matching for XML paths.

	* body/Tire.cc, include/vamos/body/Tire.h:
	Implemented Beckman's combination grip method for combining
	longitudinal and transverse tire forces.

2005-07-09  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, geometry/Makefile.am, geometry/Makefile.in, geometry/XML_Parser.cc, geometry/test_XML_Parser.cc, include/vamos/body/Car.h, include/vamos/geometry/Conversions.h, include/vamos/geometry/XML_Parser.h, include/vamos/track/Road_Segment.h, include/vamos/track/Strip_Track.h, include/vamos/world/Gl_World.h, include/vamos/world/Sounds.h, track/Strip_Track.cc, world/Gl_World.cc, world/Sounds.cc:
	Cleaned up XML handling.

	Added preliminary pit lane support.

2005-07-05  Sam Varner  <snick-a-doo@comcast.net>

	* TODO, vamos/Makefile.am, vamos/Makefile.in, vamos/vamos.cc:
	Data files are now found in the configured prefix directory.

-- 0.5.4 --
2005-06-27  Sam Varner  <snick-a-doo@comcast.net>

	* include/vamos/track/Road_Segment.h, track/Road_Segment.cc, track/Strip_Track.cc, track/test_Road_Segment.cc:
	Implemented the transformation to track coordinates for skewed
	curves.

2005-06-05  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, body/Gl_Car.cc, include/vamos/body/Car.h, include/vamos/body/Gl_Car.h, world/Gl_World.cc:
	Show rear views when panning.

2005-06-04  Sam Varner  <snick-a-doo@comcast.net>

	* TODO, body/Car.cc, body/Drivetrain.cc, body/Gl_Car.cc, body/Suspension.cc, include/vamos/body/Car.h, include/vamos/body/Gl_Car.h, include/vamos/media/Texture_Image.h, include/vamos/track/Strip_Track.h, include/vamos/track/Track.h, include/vamos/world/World.h, media/Texture_Image.cc, track/Strip_Track.cc, world/Gl_World.cc, world/World.cc:
	Fixed reloading of cars so that the textures aren't lost and frame
	rate doesn't decrease.

2005-05-29  Sam Varner  <snick-a-doo@comcast.net>

	* configure.ac, Makefile.am: Removed old tests.

	* body/Aerodynamic_Device.cc, body/Contact_Point.cc, body/Rigid_Body.cc, body/Suspension.cc, body/Tire.cc, body/Wheel.cc, geometry/Inertia_Tensor.cc, geometry/Three_Matrix.cc, geometry/Three_Vector.cc, geometry/test_Three_Vector.cc, include/vamos/geometry/Three_Vector.h, track/Road_Segment.cc, world/Gl_World.cc, world/World.cc:
	Renamed Three_Vector::abs() magnitude().

	* include/vamos/track/Strip_Track.h, include/vamos/world/Gl_World.h, track/Strip_Track.cc, world/Gl_World.cc:
	Added cameras with fixed pan and tilt.

2005-05-15  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/default-track.xml, include/vamos/track/Strip_Track.h, include/vamos/world/Gl_World.h, track/Road_Segment.cc, track/Strip_Track.cc, track/test_Road_Segment.cc, vamos/vamos.cc, world/Gl_World.cc:
	Added support for multible camera locations around a track.

2005-05-05  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/test_Two_Vector.cc:
	Don't error out of the make for a failed test.

	* include/vamos/geometry/Three_Vector.h, geometry/Three_Vector.cc, geometry/test_Three_Vector.cc:
	Added rotation method.

	* include/vamos/track/Road_Segment.h:
	Re-wrote transformation to track coordinates (still needs skew for
	curves).

	* scripts/random_track.py: Added random track generation script.

	* scripts/cppunit.el: Don't error out of the make for a failed test.

	* track/Road_Segment.cc, track/test_Road_Segment.cc:
	Re-wrote transformation to track coordinates (still needs skew for
	curves).

	* geometry/Makefile.am, geometry/Makefile.in, track/Makefile.am, track/Makefile.in:
	Link libdl for tests.

	* include/vamos/media/Texture_Image.h, media/Texture_Image.cc:
	Fixed texture wraping.

	* body/Tire.cc, geometry/Three_Matrix.cc, include/vamos/geometry/Three_Matrix.h:
	Made the default Three_Matrix the identity matrix.

	* body/Car.cc, track/Strip_Track.cc, vamos/vamos.cc, world/Gl_World.cc:
	Allow absolute path names for data files.

	Show bottom image on sky box.

2005-03-12  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, body/Dashboard.cc, body/Gl_Car.cc, body/Rigid_Body.cc, body/Suspension.cc, body/Tire.cc, body/Wheel.cc, geometry/Inertia_Tensor.cc, geometry/Linear_Interpolator.cc, geometry/Makefile.am, geometry/Makefile.in, geometry/Spline.cc, geometry/Three_Matrix.cc, geometry/Three_Vector.cc, geometry/Two_Point.cc, geometry/Two_Vector.cc, geometry/test_Two_Vector.cc, include/vamos/body/Car.h, include/vamos/body/Dashboard.h, include/vamos/geometry/Interpolator.h, include/vamos/geometry/Linear_Interpolator.h, include/vamos/geometry/Makefile.am, include/vamos/geometry/Makefile.in, include/vamos/geometry/Spline.h, include/vamos/geometry/Three_Matrix.h, include/vamos/geometry/Three_Vector.h, include/vamos/geometry/Two_Point.h, include/vamos/geometry/Two_Vector.h, include/vamos/track/Gl_Road_Segment.h, include/vamos/track/Road_Segment.h, include/vamos/track/Strip_Track.h, media/Ac3d.cc, track/Gl_Road_Segment.cc, track/Road_Segment.cc, track/Strip_Track.cc, track/test_Road_Segment.cc, world/Gl_World.cc, world/World.cc:
	Renamed Two_Point to Two_Vector.

	Added tests for Two_Vector.

	Use public members x, y, z instead of subscripts for Three_Vector
	element access.

	* track/Draw.cc, Makefile.am, Makefile.in, body/Car.cc, body/Dashboard.cc, body/Gl_Car.cc, body/Suspension.cc, body/Wheel.cc, caelum/Makefile.am, caelum/Makefile.in, caelum/Sky.cc, caelum/Sky.h, caelum/caelum.cc, configure, configure.ac, geometry/Ac3d.cc, geometry/Makefile.am, geometry/Makefile.in, geometry/Sample.cc, geometry/Texture_Image.cc, geometry/Three_Vector.cc, include/vamos/body/Car.h, include/vamos/body/Dashboard.h, include/vamos/body/Gl_Car.h, include/vamos/geometry/Ac3d.h, include/vamos/geometry/Makefile.am, include/vamos/geometry/Makefile.in, include/vamos/geometry/Sample.h, include/vamos/geometry/Texture_Image.h, include/vamos/media/Ac3d.h, include/vamos/media/Makefile.am, include/vamos/media/Makefile.in, include/vamos/media/Sample.h, include/vamos/media/Texture_Image.h, include/vamos/track/Gl_Road_Segment.h, include/vamos/track/Makefile.am, include/vamos/track/Makefile.in, include/vamos/track/Road_Segment.h, include/vamos/track/Strip_Track.h, include/vamos/world/Sounds.h, media/Ac3d.cc, media/Makefile.am, media/Makefile.in, media/Sample.cc, media/Texture_Image.cc, track/Gl_Road_Segment.cc, track/Makefile.am, track/Makefile.in, track/Road_Segment.cc, track/Strip_Track.cc, track/test_Road_Segment.cc, vamos/Makefile.am, vamos/Makefile.in, vamos/vamos.cc, world/Gl_World.cc, world/Sounds.cc:
	Moved graphics and sound code from the geometry library into a new
	library called "media".  This helps avoid dependancies on external
	libraries.

	Moved graphics out of Road_Segment into a new class
	"Gl_Road_Segment".  Road_Segment can now be tested without linking
	external libraries.

2005-02-27  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, geometry/Texture_Image.cc, include/vamos/geometry/Texture_Image.h, include/vamos/geometry/Three_Matrix.h, include/vamos/track/Road_Segment.h, body/Dashboard.cc, body/Rigid_Body.cc, data/tracks/Hockenheimring.xml, include/vamos/body/Rigid_Body.h, include/vamos/track/Strip_Track.h, include/vamos/world/World.h, track/Draw.cc, track/Road_Segment.cc, track/Strip_Track.cc, vamos/vamos.cc, world/World.cc:
	Point the car in the right direction on reset.

	Set normal vector for dashboard images.

	Make the default Three_Matrix the identity matrix.

	Fix timing crashes.

2005-02-25  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, body/Dashboard.cc, body/Gauge.cc, body/Gl_Car.cc, body/Makefile.am, body/Makefile.in, geometry/Texture_Image.cc, include/vamos/body/Car.h, include/vamos/body/Dashboard.h, include/vamos/body/Gauge.h, include/vamos/body/Gl_Car.h, include/vamos/body/Makefile.am, include/vamos/body/Makefile.in, include/vamos/geometry/Texture_Image.h, include/vamos/track/Road_Segment.h, include/vamos/track/Strip_Track.h, track/Draw.cc, track/Makefile.am, track/Makefile.in, track/Road_Segment.cc, track/Strip_Track.cc, vamos/vamos.cc:
	Re-organized texture image handling.

	Allow setting the orientation of the track.

	Separated drawing code from Road_Segment.cc

2005-02-04  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Magny-Cours.xml, include/vamos/track/Road_Segment.h, include/vamos/track/Strip_Track.h, include/vamos/track/Track.h, track/Road_Segment.cc, track/Strip_Track.cc, world/Gl_World.cc:
	Only build the track once.

	Added preliminary support for the skew parameter.

-- 0.5.3 --
2005-02-04  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Magny-Cours.xml, include/vamos/track/Road_Segment.h, include/vamos/track/Strip_Track.h, include/vamos/track/Track.h, track/Road_Segment.cc, track/Strip_Track.cc, world/Gl_World.cc:
	Only build the track once.

	Added preliminary support for the skew parameter.

	* scripts/cppunit.el, Makefile.in, body/Makefile.in, caelum/Makefile.in, config/Makefile.in, configure, configure.ac, data/Makefile.in, data/cars/Makefile.in, data/controls/Makefile.in, data/sounds/Makefile.in, data/textures/Makefile.in, data/tracks/Makefile.in, data/worlds/Makefile.in, doc/Makefile.in, geometry/Makefile.am, geometry/Makefile.in, geometry/Three_Vector.cc, geometry/test_Three_Vector.cc, include/Makefile.in, include/vamos/Makefile.in, include/vamos/body/Makefile.in, include/vamos/geometry/Makefile.in, include/vamos/geometry/Three_Vector.h, include/vamos/track/Makefile.in, include/vamos/world/Makefile.in, scripts/Makefile.in, test/Makefile.in, track/Makefile.in, vamos/Makefile.in, world/Makefile.in:
	Added support for CppUnit tests.

2005-01-04  Sam Varner  <snick-a-doo@comcast.net>

	* body/Body.cc, body/Car.cc, body/Gl_Car.cc, body/Makefile.am, body/Makefile.in, body/Rigid_Body.cc, include/vamos/body/Body.h, include/vamos/body/Car.h, include/vamos/body/Makefile.am, include/vamos/body/Makefile.in, include/vamos/body/Rigid_Body.h, vamos/vamos.cc, world/Gl_World.cc, world/World.cc:
	Renamed Body to Rigid_Body.  The car-body relationship is now "has-a"
	instead of "is-a."

2004-12-27  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, include/vamos/body/Car.h, include/vamos/world/World.h, world/Gl_World.cc, world/World.cc:
	Added collision detection between cars.

	* body/Frame.cc, geometry/Three_Vector.cc, include/vamos/body/Frame.h, include/vamos/geometry/Three_Vector.h:
	Inlined some important functions for efficiency.

	* data/tracks/Istanbul.xml: Added Istanbul track.

2004-11-24  Sam Varner  <snick-a-doo@comcast.net>

	* scripts/conversions.el: Added Emacs lisp conversion functions.

	* body/Body.cc, body/Car.cc, body/Makefile.am, body/Makefile.in, geometry/Makefile.am, geometry/Makefile.in, geometry/Sample.cc, geometry/Spline.cc, geometry/Three_Matrix.cc, include/vamos/geometry/Spline.h, include/vamos/geometry/Three_Matrix.h, include/vamos/geometry/Three_Vector.h, include/vamos/world/Sounds.h, track/Makefile.am, track/Makefile.in, vamos/Makefile.am, vamos/Makefile.in, world/Gl_World.cc, world/Makefile.am, world/Makefile.in, world/Sounds.cc, world/World.cc:
	Optimized.

-- 0.5.2 --
2004-11-08  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/Sample.cc, include/vamos/geometry/Sample.h, include/vamos/world/World.h, world/Gl_World.cc, world/Sounds.cc, world/World.cc:
	Fixed sounds for multiple cars.

2004-11-07  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/Ac3d.cc, include/vamos/world/World.h, world/Gl_World.cc, world/World.cc:
	Fixed surface culling in rear views.

	Fixed restarting.

2004-11-06  Sam Varner  <snick-a-doo@comcast.net>

	* include/vamos/world/Gl_World.h, include/vamos/world/World.h, world/Gl_World.cc, world/Sounds.cc, world/World.cc:
	Fixed sound loading and rear views for multiple cars.

2004-11-02  Sam Varner  <snick-a-doo@comcast.net>

	* README.win32, body/body.vcproj, geometry/geometry.vcproj, track/track.vcproj, vamos/vamos.vcproj, vamos_all.sln, world/world.vcproj:
	Added Win32 project files.

	* body/Drivetrain.cc, body/Gauge.cc, geometry/Ac3d.cc, geometry/XML_Parser.cc, include/vamos/body/Suspension.h, include/vamos/geometry/Ac3d.h, include/vamos/geometry/Conversions.h, include/vamos/geometry/Gl_Texture_Image.h, include/vamos/geometry/XML_Parser.h, track/Road_Segment.cc, track/Strip_Track.cc, world/Gl_World.cc:
	Fixes and cleanups from Brent.

	Added diagnostic output for unterminated XML attribute string.

2004-10-22  Sam Varner  <snick-a-doo@comcast.net>

	* data/controls/clutch-wheel.xml, data/controls/default-controls.xml, data/controls/keyboard.xml, data/controls/mouse.xml, data/controls/stick.xml, data/controls/throttle-wheel.xml, include/vamos/world/Gl_World.h, include/vamos/world/World.h, world/Gl_World.cc, world/World.cc:
	Added the ability to change the focused car on the fly.

2004-10-19  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/Linear_Interpolator.cc, geometry/Spline.cc, include/vamos/geometry/Interpolator.h, include/vamos/geometry/Linear_Interpolator.h, include/vamos/geometry/Spline.h, include/vamos/track/Road_Segment.h, include/vamos/track/Strip_Track.h, include/vamos/track/Track.h, include/vamos/world/Gl_World.h, include/vamos/world/World.h, track/Makefile.am, track/Makefile.in, track/Road_Segment.cc, track/Strip_Track.cc, world/Gl_World.cc, world/World.cc:
	Added per-car timing and location information as part of multiple car
	support.

2004-10-16  Sam Varner  <snick-a-doo@comcast.net>

	* include/vamos/world/Gl_World.h, include/vamos/world/World.h, vamos/vamos.cc, world/Gl_World.cc, world/World.cc:
	Added support for multiple cars.

-- 0.5.1 --
2004-10-11  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Shanghai.xml: Added elevation changes.

2004-09-28  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/Material.cc, include/vamos/geometry/Constants.h:
	Made surface bumpiness less regular.

	* data/tracks/Monza-1967.xml: Added old Monza track.

	* configure, configure.ac, caelum/Sky.cc: Include glext.h on Windows.

2004-09-10  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Spa.xml: Updated Spa

2004-09-07  Sam Varner  <snick-a-doo@comcast.net>

	* data/cars/F1-1967.ac, data/cars/F1-1967.xml:
	Rebuilt the 1967 Formula One car.

2004-07-09  Sam Varner  <snick-a-doo@comcast.net>

	* body/Gl_Car.cc, world/Controls.cc, world/Gl_World.cc:
	Avoid the words min, max, near, and far to allow compiling with Cygwin.

-- 0.5.0 --
2004-06-22  Sam Varner  <snick-a-doo@comcast.net>

	* data/cars/F1-1967-arm.ac, data/cars/F1-1967-stator.ac, data/cars/F1-1967-wishbone.ac, data/cars/F1-1967.xml, data/cars/F1.xml, data/cars/Makefile.am, data/cars/Makefile.in:
	Added suspension model files.

	* body/Car.cc, body/Suspension.cc, body/Wheel.cc:
	Corrected transformations for suspension parts.

2004-06-20  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, include/vamos/body/Car.h:
	Allow specifying multiple suspension models for each wheel.

	* body/Wheel.cc, include/vamos/body/Wheel.h:
	Added a parameter to set how far the contact patch is from the
	steering pivot.

2004-06-19  Sam Varner  <snick-a-doo@comcast.net>

	* body/Suspension.cc:
	Set the normal vector in the parent's frame.  This keeps the
	suspension force pointed up regardless of the caster and camber
	angles.

2004-06-18  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, body/Wheel.cc, data/cars/F1-stator.ac, data/cars/F1.xml, data/cars/Makefile.am, include/vamos/body/Car.h, include/vamos/body/Wheel.h:
	Render the wheel stator.

2004-06-17  Sam Varner  <snick-a-doo@comcast.net>

	* include/vamos/body/Wheel.h: Handle bottoming out more gently.

	* body/Wheel.cc: Added rendering of suspension components.

	* data/textures/gears-lcd.png: Show gear numbers > 6.

	* body/Car.cc, body/Suspension.cc, data/cars/F1-wishbone.ac, data/cars/F1.xml, include/vamos/body/Suspension.h:
	Added rendering of suspension components.

2004-06-16  Sam Varner  <snick-a-doo@comcast.net>

	* body/Gl_Car.cc: Fixed rear-view mirror drawing after resize.

2004-06-15  Sam Varner  <snick-a-doo@comcast.net>

	* test/ac3d.cc, test/down.ac, test/left.ac, test/right-up.ac, test/right.ac, test/single.ac, test/square.ac, test/triangle-fan.ac, test/triangle-right.ac, test/triangle-two-right.ac, test/triangle.ac, test/two-right.ac, test/up.ac, test/wheel.ac:
	Added tests for ac3d strip detection.

	* geometry/Ac3d.cc: Detect triangle strips and fans in ac3d files.

2004-06-10  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, include/vamos/track/Road_Segment.h, track/Road_Segment.cc, track/Strip_Track.cc, world/Controls.cc, world/Gl_World.cc, world/Sounds.cc:
	Removed stray semicolons that caused errors with GCC 3.4.0

	Re-worked Road_Segment::coordinates() to avoid using exceptions.

2004-05-17  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/Ac3d.cc, include/vamos/geometry/Ac3d.h:
	Finished quad strip handling.

2004-05-14  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Catalunya.xml: Updated layout.

	* geometry/Ac3d.cc:
	Fixed orientation of quad strips.  All quads must now attach with the
	same vertex indices.

2004-05-13  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/Ac3d.cc, include/vamos/geometry/Ac3d.h:
	Added preliminary support for finding strips of surfaces.

-- 0.4.6 --
2004-05-03  Sam Varner  <snick-a-doo@comcast.net>

	* body/Tire.cc, body/Wheel.cc, include/vamos/body/Tire.h:
	Orient the tire's frame so that the z-axis is along the road's normal.

2004-04-29  Sam Varner  <snick-a-doo@comcast.net>

	* body/Wheel.cc, include/vamos/body/Wheel.h:
	Return the suspension to equilibrium when the wheel leaves the ground.

	* geometry/Material.cc:
	Treat a bump wavelength of 0 as no bump rather than an error.

	* body/Differential.cc, body/Gl_Car.cc, include/vamos/geometry/Conversions.h, include/vamos/world/Sounds.h, world/Controls.cc, world/Sounds.cc:
	Replaced all clipping functions with a single function in the
	geometry module.

2004-04-11  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/XML_Parser.cc: Initialize variables.

	* geometry/Texture_Image.cc: Free the end info structure.

2004-03-15  Sam Varner  <snick-a-doo@comcast.net>

	* data/controls/mouse.xml, include/vamos/world/Controls.h, include/vamos/world/Gl_World.h, world/Controls.cc, world/Gl_World.cc:
	Changed parameter set for mouse motion bindings.

	* data/controls/Makefile.am, data/controls/Makefile.in:
	Added keyboard and mouse control files to the distribution.

2004-03-08  Sam Varner  <snick-a-doo@comcast.net>

	* include/vamos/world/Controls.h, world/Controls.cc, world/Gl_World.cc:
	Factored out classes for keyboard, joystick, and mouse.

2004-03-07  Sam Varner  <snick-a-doo@comcast.net>

	* include/vamos/world/Gl_World.h, world/Gl_World.cc:
	Fixed crash when starting in map mode.
	Update screen when track file is read in map mode.

	* body/Car.cc, body/Drivetrain.cc, include/vamos/body/Car.h:
	Fixed stall after resetting with car in gear.

2004-03-06  Sam Varner  <snick-a-doo@comcast.net>

	* data/controls/mouse.xml, include/vamos/world/Controls.h, include/vamos/world/Gl_World.h, world/Controls.cc, world/Gl_World.cc:
	Added preliminary support for mouse control.

2004-03-02  Sam Varner  <snick-a-doo@comcast.net>

	* data/cars/GT.ac, geometry/Ac3d.cc: Fixed culling in 3D models.

	* body/Car.cc, body/Drivetrain.cc, body/Engine.cc, include/vamos/body/Drivetrain.h:
	Keep the engine running when reseting or restarting.

	* data/textures/Makefile.am, data/textures/Makefile.in:
	Added square-mirror-frame.png to the distribution.

2004-02-22  Sam Varner  <snick-a-doo@comcast.net>

	* vamos/vamos.cc:
	Catch exceptions as references so that the correct virtual functions
	are called.

	* geometry/XML_Parser.cc:
	Check stream value as well as pointer to see if the file was
	successfully opened.

-- 0.4.5 --
2004-02-22  Sam Varner  <snick-a-doo@comcast.net>

	* vamos/vamos.cc:
	Catch exceptions as references so that the correct virtual functions
	are called.

	* geometry/XML_Parser.cc:
	Check stream value as well as pointer to see if the file was
	successfully opened.

2004-02-20  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, body/Drivetrain.cc, body/Suspension.cc, body/Wheel.cc, include/vamos/body/Wheel.h:
	Fixed tire force calculation.  Added temporary roll height parameter
	to definition file.

	* body/Body.cc: Fixed torque calculation.

2004-02-19  Sam Varner  <snick-a-doo@comcast.net>

	* body/Differential.cc, include/vamos/body/Differential.h:
	Improved anti-slip algorithm.

	* data/controls/clutch-wheel.xml, data/controls/default-controls.xml, data/controls/stick.xml, data/controls/throttle-wheel.xml, include/vamos/world/Controls.h, world/Controls.cc:
	Multiple callbacks can now be bound to one key.

2004-02-07  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, include/vamos/body/Car.h, include/vamos/track/Strip_Track.h, include/vamos/world/Gl_World.h, include/vamos/world/Sounds.h, track/Strip_Track.cc, vamos/vamos.cc, world/Gl_World.cc, world/Sounds.cc:
	Used XML_Parser instead of Sim Gear's XMLVisitor.

	* configure, configure.ac, vamos/Makefile.am, vamos/Makefile.in:
	Removed dependancy on Sim Gear.

	* geometry/Makefile.am, geometry/Makefile.in, geometry/XML_Parser.cc, include/vamos/geometry/Makefile.am, include/vamos/geometry/Makefile.in, include/vamos/geometry/XML_Parser.h:
	Added class for parsing XML files.

2004-01-30  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Watkins_Glen.xml: Added old Watkins Glen track.

	* body/Car.cc, body/Gauge.cc, data/cars/default-car.xml, data/textures/square-mirror-frame.png, include/vamos/body/Car.h, include/vamos/body/Gauge.h:
	Added mirror frames.

2004-01-24  Sam Varner  <snick-a-doo@comcast.net>

	* data/textures/round-mask.png, data/textures/square-mask.png, include/vamos/world/Gl_World.h, body/Car.cc, body/Gl_Car.cc, data/cars/F1-1967.xml, data/cars/F1.xml, data/cars/default-car.xml, include/vamos/body/Car.h, include/vamos/body/Gl_Car.h, world/Gl_World.cc:
	Finished rearview mirror support.
	Added clip plane settings to car definition files.
	Pause the program when in map mode.

-- 0.4.4 --
2004-01-24  Sam Varner  <snick-a-doo@comcast.net>

	* data/textures/round-mask.png, data/textures/square-mask.png, include/vamos/world/Gl_World.h, body/Car.cc, body/Gl_Car.cc, data/cars/F1-1967.xml, data/cars/F1.xml, data/cars/default-car.xml, include/vamos/body/Car.h, include/vamos/body/Gl_Car.h, world/Gl_World.cc:
	Finished rearview mirror support.
	Added clip plane settings to car definition files.
	Pause the program when in map mode.

2004-01-21  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, body/Gl_Car.cc, include/vamos/body/Car.h, include/vamos/body/Gl_Car.h:
	Added tag for showing detailed real-time information about the car.

	Implemented arbitrary rearview mirror placement.

2004-01-13  Sam Varner  <snick-a-doo@comcast.net>

	* include/vamos/world/Controls.h, include/vamos/world/Gl_World.h, include/vamos/world/Makefile.am, include/vamos/world/Makefile.in, include/vamos/world/World.h, vamos/vamos.cc, world/Controls.cc, world/Gl_World.cc, world/Makefile.am, world/Makefile.in, world/World.cc:
	Remove World virtual base class.  Renamed Car_World to World,
	Gl_Car_World to Gl_World.  Refactored Gl_World a bit.

2004-01-10  Sam Varner  <snick-a-doo@comcast.net>

	* body/Suspension.cc: Zero displacement when resetting.

2004-01-06  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/Gl_Texture_Image.cc:
	Set the color format based on the number of channels in the image.

2004-01-03  Sam Varner  <snick-a-doo@comcast.net>

	* body/Engine.cc:
	Fixed rev limiter so that the throttle does not get stuck when the
	wheels aren't in contact with the road.

2004-01-01  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Albert_Park.xml, data/tracks/Bahrain.xml, data/tracks/Catalunya.xml, data/tracks/Hungaroring.xml, data/tracks/Imola.xml, data/tracks/Indianapolis.xml, data/tracks/Interlagos.xml, data/tracks/Magny-Cours.xml, data/tracks/Monaco.xml, data/tracks/Monza.xml, data/tracks/Nurburgring.xml, data/tracks/Sepang.xml, data/tracks/Shanghai.xml, data/tracks/Silverstone.xml, data/tracks/Spa.xml, data/tracks/Suzuka.xml, data/tracks/Villeneuve.xml, data/tracks/default-track.xml, data/tracks/skid_pad.xml:
	Increased resolution in turns to make them look smoother.

2003-12-29  Sam Varner  <snick-a-doo@comcast.net>

	* body/Gauge.cc, body/Gl_Car.cc, geometry/Ac3d.cc, include/vamos/body/Car.h, include/vamos/body/Gl_Car.h, include/vamos/track/Strip_Track.h, include/vamos/track/Track.h, track/Road_Segment.cc, track/Strip_Track.cc:
	Rearranged graphics commands.

2003-12-27  Sam Varner  <snick-a-doo@comcast.net>

	* body/Gl_Car.cc, data/textures/rearview-mask.png, geometry/Gl_Texture_Image.cc, include/vamos/body/Car.h, include/vamos/body/Gl_Car.h, include/vamos/geometry/Gl_Texture_Image.h:
	Added the ability to draw an arbitrarily shaped rearview mirror.

	* data/tracks/Kyalami.xml: Added the old Kyalami track.

2003-12-23  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, body/Gauge.cc, body/Gl_Car.cc, data/cars/GT-interior.ac, data/cars/default-car.xml, data/textures/needle.png, include/vamos/body/Car.h, include/vamos/body/Gauge.h, include/vamos/body/Gl_Car.h:
	Added 3D interior model.

2003-12-21  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, geometry/Sample.cc, include/vamos/body/Car.h, include/vamos/geometry/Sample.h, include/vamos/world/Sounds.h, vamos/vamos.cc, world/Sounds.cc:
	Fixed sound system so that the car file can be reloaded.

-- 0.4.3 --
2003-12-15  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, body/Gauge.cc, data/textures/gear-shift.png, data/textures/shift-gate.png, include/vamos/body/Car.h, include/vamos/body/Gauge.h:
	Added gear shift to driver's view.

2003-12-12  Sam Varner  <snick-a-doo@comcast.net>

	* include/vamos/body/Gauge.h, body/Car.cc, body/Gauge.cc, data/cars/F1.xml:
	Fixed problem showing the correct number of LEDs in the tachometer.
	Allow digital tachometer.

2003-12-11  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, body/Gauge.cc, body/Gl_Car.cc, data/cars/F1.xml, data/textures/F1-steering-wheel.png, data/textures/digits-lcd.png, data/textures/digits.png, data/textures/gears-lcd.png, data/textures/tachometer-leds.png, include/vamos/body/Car.h, include/vamos/body/Gauge.h:
	Added digital gauges.

2003-12-10  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, body/Gauge.cc, body/Gl_Car.cc, data/cars/F1.xml, data/textures/F1-steering-wheel.png, data/textures/tachometer-leds.png, include/vamos/body/Car.h, include/vamos/body/Gauge.h:
	Added F1-style LED tachometer.  Gauges can now be placed on the
	steering wheel.

2003-12-09  Sam Varner  <snick-a-doo@comcast.net>

	* body/Gl_Car.cc: Pan about the car's vertical axis, not the world's.

2003-12-08  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, body/Gl_Car.cc, data/cars/default-car.xml, data/controls/default-controls.xml, include/vamos/body/Car.h, include/vamos/world/Gl_Car_World.h, world/Gl_Car_World.cc:
	Added panning.

2003-12-07  Sam Varner  <snick-a-doo@comcast.net>

	* vamos/Makefile.am, vamos/Makefile.in, vamos/Vamos_Car.cc, vamos/Vamos_Car.h, vamos/vamos.cc:
	Removed Vamos_Car class.  Use Gl_Car instead.

	* body/Car.cc, body/Gauge.cc, body/Gl_Car.cc, data/cars/default-car.xml, include/vamos/body/Car.h, include/vamos/body/Gauge.h, include/vamos/body/Gl_Car.h, world/Gl_Car_World.cc:
	Added dashboard stuff to Car class and car definition file.

2003-12-06  Sam Varner  <snick-a-doo@comcast.net>

	* body/Gauge.cc, include/vamos/body/Gauge.h, vamos/Vamos_Car.cc, vamos/Vamos_Car.h:
	Added dashboard class.  Gauges are now placed relative to the dashboard.

2003-12-05  Sam Varner  <snick-a-doo@comcast.net>

	* world/Gl_Car_World.cc:
	Rearranged drawing code.  Pausing no longer soakes up CPU cycles.
	Added rear view.

	* body/Gauge.cc, include/vamos/body/Gauge.h, vamos/Vamos_Car.cc, vamos/Vamos_Car.h:
	Gauges are now draw in 3D fixed to the car's frame.

	* geometry/Ac3d.cc: Restore attributes after drawing.

2003-11-18  Sam Varner  <snick-a-doo@comcast.net>

	* vamos/Vamos_Car.cc, vamos/Vamos_Car.h: Added gauges.

	* track/Strip_Track.cc, world/Gl_Car_World.cc: Show rearview window.

	* data/textures/dash.png, data/textures/dash.xcf, data/textures/face.png, data/textures/face.xcf, data/textures/fuel-face.png, data/textures/gears.png, data/textures/speedometer-face.png, data/textures/steering-wheel.png, data/textures/steering-wheel.xcf, data/textures/tachometer-face.png:
	Added and updated gauge images.

	* body/Gl_Car.cc, include/vamos/body/Car.h, include/vamos/body/Gl_Car.h:
	Added pan parameter to view ().

	* body/Gauge.cc: Allow blank face image.

2003-11-16  Sam Varner  <snick-a-doo@comcast.net>

	* include/vamos/body/Makefile.in: Added dashboard gauges.

	* include/vamos/world/Car_World.h, include/vamos/world/Gl_Car_World.h, vamos/vamos.cc, world/Car_World.cc, world/Gl_Car_World.cc:
	Add the car to the world after the world is constructed.

	* body/Gauge.cc, body/Makefile.am, body/Makefile.in, data/textures/face.png, data/textures/gears.png, data/textures/needle.png, include/vamos/body/Engine.h, include/vamos/body/Gauge.h, include/vamos/body/Makefile.am, vamos/Vamos_Car.cc, vamos/Vamos_Car.h:
	Added dashboard gauges.

2003-11-12  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Laguna_Seca.xml: Added Laguna Seca.

2003-11-11  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Road_Atlanta.xml: Added Road Atlanta.

-- 0.4.2 --
2003-11-07  Sam Varner  <snick-a-doo@comcast.net>

	* include/vamos/body/Suspension.h, body/Car.cc, body/Suspension.cc:
	Improved speed-sensitive steering.  Coupled braking torque to the
	suspension.

2003-11-05  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Hockenheimring.xml: Added Hockenheimring track.

2003-11-03  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Monaco.xml: Added Monaco.

2003-11-02  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Sepang.xml: Added Sepang circuit.

2003-11-01  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Bahrain.xml: Added Bahrain track.

	* data/tracks/Hungaroring.xml: Added Hungaroring track.

2003-10-27  Sam Varner  <snick-a-doo@comcast.net>

	* world/Gl_Car_World.cc: Fix shifting to reverse for paddle-shifters.

	* data/tracks/Shanghai.xml: Added Shanghai Circuit.

2003-10-25  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Imola.xml: Added Imola.

2003-10-24  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Catalunya.xml: Added Ciruit de Catalunya.

2003-10-23  Sam Varner  <snick-a-doo@comcast.net>

	* body/Tire.cc: Fixed some stability problems.

2003-10-22  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Villeneuve.xml: Added the Circuit Gilles Villeneuve.

2003-10-21  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Interlagos.xml: Added Interlagos track.

2003-10-19  Sam Varner  <snick-a-doo@comcast.net>

	* track/Road_Segment.cc: Convert rotation to radians.

	* include/vamos/body/Suspension.h, body/Car.cc, body/Suspension.cc, body/Tire.cc, body/Wheel.cc:
	Improved speed-sensitive steering.  Simplified suspension geometry.
	Fixed the sign of the aligning torque.

	* data/tracks/bridge.ac, data/tracks/default-track.xml, data/tracks/drag.xml, data/tracks/garage.ac, data/tracks/grandstand.ac:
	Added and updated trackside objects.

	* data/controls/clutch-wheel.xml, data/controls/stick.xml, data/controls/throttle-wheel.xml, data/controls/default-controls.xml, include/vamos/world/Controls.h, include/vamos/world/Gl_Car_World.h, world/Controls.cc, world/Gl_Car_World.cc:
	Added the ability to set the deabands of the joystick axes.

2003-10-07  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/default-track.xml, data/tracks/grandstand.ac, include/vamos/track/Road_Segment.h, include/vamos/track/Strip_Track.h, track/Road_Segment.cc, track/Strip_Track.cc:
	Added support for trackside objects.

2003-10-06  Sam Varner  <snick-a-doo@comcast.net>

	* world/Controls.cc: Avoid crash when joystick is not present.

-- 0.4.1 --
2003-09-29  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/Ac3d.cc:
	Compensate for the change in coordinate system when exporting Blender
	files in AC3D format.

	* body/Car.cc, include/vamos/body/Car.h:
	Read wheel model information from the XML file.

	* body/Suspension.cc, body/Wheel.cc, include/vamos/body/Suspension.h:
	Use the correct normal vector for suspension forces.

	* world/Gl_Car_World.cc:
	Removed unnecessary GL calls.  Zoomed the world view.

	* data/cars/F1-1967.ac, data/cars/F1-1967.xml, data/cars/F1.ac, data/cars/F1.xml, data/cars/GT.ac, data/cars/GT.xml, data/cars/Z3.ac3d, data/cars/default-car.xml, data/cars/front-drive.xml, data/cars/trainer.xml, data/cars/wheel-fast.ac, data/cars/wheel.ac:
	Added and updated models.

2003-09-26  Sam Varner  <snick-a-doo@comcast.net>

	* data/cars/F1.ac, data/cars/F1.xml, data/cars/GT.ac, data/cars/default-car.xml, data/cars/wheel-fast.ac, data/cars/wheel.ac:
	Added model files.

	* include/vamos/world/Sounds.h, vamos/vamos.cc, world/Gl_Car_World.cc, world/Sounds.cc:
	Changed initialization sequence for cars and sounds.

	* body/Suspension.cc:
	Apply camber and caster rotations to the suspension matrix.

	* body/Engine.cc: Fixed rev limiter so that no torque is generated.

	* body/Car.cc, body/Gl_Car.cc, body/Wheel.cc, geometry/Ac3d.cc, include/vamos/body/Car.h, include/vamos/body/Gl_Car.h, include/vamos/body/Wheel.h, include/vamos/geometry/Ac3d.h:
	Added speed-sensitive steering, scaling and translation of models,
	models for wheels.

2003-09-17  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/Ac3d.cc, include/vamos/geometry/Ac3d.h:
	Added smooth shading and backface culling.

2003-09-16  Sam Varner  <snick-a-doo@comcast.net>

	* body/Gl_Car.cc, geometry/Ac3d.cc, include/vamos/body/Car.h, include/vamos/body/Gl_Car.h, include/vamos/geometry/Ac3d.h:
	The Ac3d object is allowed to go out of scope once it returns the
	display list ID.

	* configure, caelum/Makefile.am, caelum/Makefile.in, caelum/Sky.h, caelum/caelum.cc, configure.ac:
	Fixed SigC++ version inconsistency.

2003-09-15  Sam Varner  <snick-a-doo@comcast.net>

	* geometry/Ac3d.cc, include/vamos/geometry/Ac3d.h, vamos/vamos.cc:
	Completed Ac3d reader.

2003-09-13  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, body/Gl_Car.cc, data/cars/Z3.ac3d, data/cars/default-car.xml, geometry/Ac3d.cc, geometry/Makefile.am, geometry/Makefile.in, include/vamos/body/Car.h, include/vamos/body/Gl_Car.h, include/vamos/geometry/Ac3d.h, include/vamos/geometry/Makefile.am, include/vamos/geometry/Makefile.in, vamos/Vamos_Car.cc, vamos/Vamos_Car.h:
	Added preliminary support for AC3D car model files.

	* include/vamos/world/Controls.h, include/vamos/world/Gl_Car_World.h, world/Controls.cc, world/Gl_Car_World.cc, world/Makefile.am, world/Makefile.in:
	Made Controls a non-template class because function pointers take care
	of the inheritance issues.

-- 0.4.0 --
2003-09-01  Sam Varner  <snick-a-doo@comcast.net>

	* doc/vamos.info, doc/vamos.info-1, doc/vamos.info-2, doc/vamos.texi:
	Updated documentation.

2003-08-27  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Monza.xml: Added Monza track.

2003-08-03  Sam Varner  <snick-a-doo@comcast.net>

	* data/controls/default-controls.xml, body/Car.cc, include/vamos/body/Car.h, include/vamos/world/Controls.h, include/vamos/world/Gl_Car_World.h, vamos/vamos.cc, world/Gl_Car_World.cc:
	Added controls definition file.

2003-07-27  Sam Varner  <snick-a-doo@comcast.net>

	* include/vamos/world/Gl_Car_World.h, vamos/Makefile.am, vamos/Makefile.in, world/Makefile.am, world/Makefile.in:
	Use libsigc++ 1.2.

	* include/vamos/world/Controls.h, include/vamos/world/Gl_Car_World.h, include/vamos/world/Makefile.am, include/vamos/world/Makefile.in, world/Controls.cc, world/Gl_Car_World.cc, world/Makefile.am, world/Makefile.in:
	Moved controls stuff from Gl_Car_World to the new Controls class.

2003-07-20  Sam Varner  <snick-a-doo@comcast.net>

	* data/worlds/default-world.xml, data/worlds/moon.xml, include/vamos/world/Atmosphere.h, include/vamos/world/Car_World.h, include/vamos/world/Gl_Car_World.h, include/vamos/world/World.h, vamos/vamos.cc, world/Car_World.cc, world/Gl_Car_World.cc, world/Makefile.am, world/Makefile.in, world/World.cc:
	Added XML file for the world.

2003-07-17  Sam Varner  <snick-a-doo@comcast.net>

	* body/Car.cc, data/cars/F1.xml, data/cars/default-car.xml, include/vamos/body/Car.h, include/vamos/world/Gl_Car_World.h, vamos/vamos.cc, world/Gl_Car_World.cc:
	Moved steering exponent, clutch time, and shift delay from
	Gl_Car_World to Car.  Added tags for these items and for the maximum
	steering angle to the car definitions.

2003-07-16  Sam Varner  <snick-a-doo@comcast.net>

	* data/sounds/f1-engine.wav: Added F1 engine sound.

	* data/textures/blue-green-tires.png, data/tracks/Indianapolis.xml, data/tracks/Magny-Cours.xml, data/tracks/Nurburgring.xml, data/tracks/default-track.xml:
	Updated Magny-Cours and Nurburgring.  Added braking markers.

	* include/vamos/geometry/Makefile.am, include/vamos/geometry/Makefile.in, include/vamos/geometry/Sample.h, include/vamos/body/Car.h, include/vamos/body/Gl_Car.h, data/sounds/default-sounds.xml, body/Gl_Car.cc, geometry/Makefile.am, geometry/Makefile.in, geometry/Sample.cc, include/vamos/world/Gl_Car_World.h, include/vamos/world/Makefile.am, include/vamos/world/Makefile.in, include/vamos/world/Sounds.h, vamos/Vamos_Car.cc, vamos/Vamos_Car.h, vamos/vamos.cc, world/Gl_Car_World.cc, world/Makefile.am, world/Makefile.in, world/Sounds.cc:
	Added XML file for sounds.  Re-organized sound handling.

	* body/Car.cc, data/cars/F1.xml, data/cars/default-car.xml:
	Added sound tags to car definition files.

2003-07-03  Sam Varner  <snick-a-doo@comcast.net>

	* body/Aerodynamic_Device.cc, body/Car.cc, include/vamos/body/Aerodynamic_Device.h, include/vamos/body/Car.h:
	Improved wing behavior.

	* data/textures/100.png, data/textures/150.png, data/textures/50.png, data/textures/grass2.png, include/vamos/track/Road_Segment.h, include/vamos/track/Strip_Track.h, track/Road_Segment.cc, track/Strip_Track.cc:
	Added braking markers.  Merged classes Straight_Road and Arc_Road into Road_Segment.

2003-06-14  Sam Varner  <snick-a-doo@comcast.net>

	* data/tracks/Albert_Park.xml: Added kerbs.

	* caelum/Cylinder_Sky.cc, caelum/Cylinder_Sky.h, caelum/Makefile.am, caelum/Makefile.in, caelum/Sky.cc, caelum/Sky.h, caelum/Sphere_Sky.cc, caelum/Sphere_Sky.h, caelum/caelum.cc:
	Put sphere geometry stuff into a class.  Added a cylindrical class.

	* data/tracks/Indianapolis.xml, data/tracks/Magny-Cours.xml, data/tracks/Nurburgring.xml, data/tracks/Silverstone.xml, data/tracks/Spa.xml, data/tracks/Suzuka.xml, data/tracks/default-track.xml:
	Added kerbs.

-- 0.3.3 --
2003-06-14  Sam Varner  <snick-a-doo@attbi.com>

	* caelum/Cylinder_Sky.cc, caelum/Cylinder_Sky.h, caelum/Makefile.am, caelum/Makefile.in, caelum/Sky.cc, caelum/Sky.h, caelum/Sphere_Sky.cc, caelum/Sphere_Sky.h, caelum/caelum.cc:
	Put sphere geometry stuff into a class.  Added a cylindrical class.

	* data/tracks/Albert_Park.xml, data/tracks/Silverstone.xml, data/tracks/Indianapolis.xml, data/tracks/Magny-Cours.xml, data/tracks/Nurburgring.xml, data/tracks/Silverstone.xml, data/tracks/Spa.xml, data/tracks/Suzuka.xml, data/tracks/default-track.xml:
	Added kerbs.

2003-06-12  Sam Varner  <snick-a-doo@attbi.com>

	* data/textures/blue-kerb.png, data/textures/blue-tires.png, data/textures/red-kerb.png, data/textures/red-tires.png:
	Added colored tire and kerb textures.

	* include/vamos/track/Road_Segment.h, track/Road_Segment.cc, track/Strip_Track.cc:
	Added code to render kerbs.

2003-06-02  Sam Varner  <snick-a-doo@attbi.com>

	* track/Road_Segment.cc:
	Fixed texture scaling problem at the ends of segments.

2003-05-30  Sam Varner  <snick-a-doo@attbi.com>

	* include/vamos/track/Road_Segment.h, track/Road_Segment.cc:
	Fixed problems with barriers when the track is scaled.

	* data/textures/Makefile.am, data/textures/Makefile.in:
	Replaced ppm files with png files.

	* geometry/Linear_Interpolator.cc, geometry/Spline.cc, include/vamos/geometry/Interpolator.h, include/vamos/geometry/Linear_Interpolator.h, include/vamos/geometry/Spline.h, include/vamos/track/Strip_Track.h, test/spline.cc, track/Road_Segment.cc, track/Strip_Track.cc:
	Made elevation curve return to 0.0 for circuits.

2003-05-28  Sam Varner  <snick-a-doo@attbi.com>

	* configure, configure.ac: Check for SimGear and libpng.

	* vamos/vamos.cc, world/Gl_Car_World.cc, caelum/Makefile.am, caelum/Makefile.in, test/Makefile.am, test/Makefile.in, vamos/Makefile.am, vamos/Makefile.in, geometry/Gl_Texture_Image.cc, geometry/Texture_Image.cc, include/vamos/geometry/Texture_Image.h, data/tracks/Albert_Park.xml, data/tracks/Indianapolis.xml, data/tracks/Magny-Cours.xml, data/tracks/Mosport.xml, data/tracks/Nurburgring.xml, data/tracks/Peanut.xml, data/tracks/Silverstone.xml, data/tracks/Spa.xml, data/tracks/Suzuka.xml, data/tracks/default-track.xml, data/tracks/drag.xml, data/tracks/jump.xml, data/tracks/skid_pad.xml, data/textures/grass.png, data/textures/grass.ppm, data/textures/gravel.png, data/textures/gravel.ppm, data/textures/gravel2.png, data/textures/gravel2.ppm, data/textures/gravel3.png, data/textures/gravel3.ppm, data/textures/kerb.png, data/textures/kerb.ppm, data/textures/rail.png, data/textures/rail.ppm, data/textures/red-white.png, data/textures/red-white.ppm, data/textures/sky.png, data/textures/sky.ppm, data/textures/sky_bottom.png, data/textures/sky_bottom.ppm, data/textures/sky_sides.png, data/textures/sky_sides.ppm, data/textures/sky_top.png, data/textures/sky_top.ppm, data/textures/tires.png, data/textures/tires.ppm, data/textures/track.png, data/textures/track.ppm, data/textures/track2.png, data/textures/track2.ppm, data/textures/wall.png, data/textures/wall.ppm:
	Replaced ppm files with png files.

2003-05-23  Sam Varner  <snick-a-doo@attbi.com>

	* include/vamos/track/Road_Segment.h, track/Road_Segment.cc, track/Strip_Track.cc:
	Made textures continuous across segments.
-- 0.3.2 --
	* include/vamos/track/Strip_Track.h, include/vamos/track/Track.h, world/Gl_Car_World.cc:
	Draw the sky only when neccesary.

2003-05-23  Sam Varner  <snick-a-doo@attbi.com>

	* include/vamos/track/Road_Segment.h, track/Road_Segment.cc, track/Strip_Track.cc:
	Made textures continuous across segments.

	* include/vamos/track/Strip_Track.h, include/vamos/track/Track.h, world/Gl_Car_World.cc:
	Draw the sky only when neccesary.

2003-05-17  Sam Varner  <snick-a-doo@attbi.com>

	* Makefile.am, Makefile.in, configure, configure.ac, caelum/COPYING, caelum/Makefile.am, caelum/Makefile.in, caelum/Sky.cc, caelum/Sky.h, caelum/caelum.cc:
	Added Caelum, a program for making sky boxes.

2003-05-11  Sam Varner  <snick-a-doo@attbi.com>

	* data/cars/F1-1967.xml: Made the car slidier.

	* TODO, body/Car.cc, body/Gl_Car.cc, include/vamos/body/Car.h, include/vamos/body/Gl_Car.h, include/vamos/track/Road_Segment.h, include/vamos/track/Strip_Track.h, include/vamos/world/Gl_Car_World.h, track/Road_Segment.cc, track/Strip_Track.cc, vamos/vamos.cc, world/Gl_Car_World.cc:
	Added texture, sky box, and kerb code.

	* geometry/Gl_Texture_Image.cc, geometry/Makefile.am, geometry/Makefile.in, geometry/Material.cc, geometry/Texture_Image.cc, include/vamos/geometry/Gl_Texture_Image.h, include/vamos/geometry/Makefile.am, include/vamos/geometry/Makefile.in, include/vamos/geometry/Material.h, include/vamos/geometry/Texture_Image.h:
	Added GL-specific texture class.

	* data/tracks/Albert Park.xml, data/tracks/Indianapolis.xml, data/tracks/Magny-Cours.xml, data/tracks/Mosport.xml, data/tracks/Nurburgring.xml, data/tracks/Peanut.xml, data/tracks/Silverstone.xml, data/tracks/Spa.xml, data/tracks/Suzuka.xml, data/tracks/default-track.xml, data/tracks/drag.xml, data/tracks/jump.xml, data/tracks/skid_pad.xml:
	Updated tracks to use new textures.

	* data/textures/grass.ppm, data/textures/gravel2.ppm, data/textures/gravel3.ppm, data/textures/kerb.ppm, data/textures/rail.ppm, data/textures/sky.ppm, data/textures/sky_top.ppm, data/textures/tires.ppm, data/textures/track2.ppm, data/textures/wall.ppm:
	Added and modified textures.

2003-04-18  Sam Varner  <snick-a-doo@attbi.com>

	* data/tracks/Albert Park.xml, data/tracks/Indianapolis.xml, data/tracks/Magny-Cours.xml, data/tracks/Mosport.xml, data/tracks/Nurburgring.xml, data/tracks/Silverstone.xml, data/tracks/Spa.xml, data/tracks/Suzuka.xml, data/tracks/default-track.xml, data/tracks/drag.xml, data/tracks/jump.xml, data/tracks/skid_pad.xml, geometry/Three_Vector.cc, geometry/Two_Point.cc, include/vamos/track/Road_Segment.h, include/vamos/track/Strip_Track.h, track/Road_Segment.cc, track/Strip_Track.cc:
	Added contoured kerbs.

2003-04-12  Sam Varner  <snick-a-doo@attbi.com>

	* data/textures/red-white.ppm, data/tracks/default-track.xml, include/vamos/track/Road_Segment.h, include/vamos/track/Strip_Track.h, track/Road_Segment.cc, track/Strip_Track.cc:
	Added initial kerb support.

2003-03-29  Sam Varner  <snick-a-doo@attbi.com>

	* scripts/Makefile.am, scripts/Makefile.in, scripts/magic.el, scripts/trk-convert:
	Added scripts.

	* data/cars/trainer.xml: Added trainer car.

	* data/cars/F1-1967.xml, data/cars/F1.xml, data/cars/default-car.xml:
	Tweaked cars.  Made F1 car drivable.

	* body/Tire.cc: Fixed error in aligning torque calculation.

2003-03-29  Sam Varner  <snick-a-doo@attbi.com>

	* body/Tire.cc: Fixed error in aligning torque calculation.

2003-03-25  Sam Varner  <snick-a-doo@attbi.com>

	* include/vamos/track/Road_Segment.h, include/vamos/world/Car_World.h, track/Road_Segment.cc, track/Strip_Track.cc, world/Car_World.cc, world/Gl_Car_World.cc:
	Fixed restarting and resetting.  Fixed scaling the track with variable
	widths.

2003-03-19  Sam Varner  <snick-a-doo@attbi.com>

	* test/Makefile.am, test/Makefile.in, test/linear.cc, data/tracks/Albert Park.xml, data/tracks/Indianapolis.xml, data/tracks/Magny-Cours.xml, data/tracks/Mosport.xml, data/tracks/Nurburgring.xml, data/tracks/Peanut.xml, data/tracks/Silverstone.xml, data/tracks/Spa.xml, data/tracks/Suzuka.xml, data/tracks/default-track.xml, data/tracks/drag.xml, data/tracks/jump.xml, data/tracks/skid_pad.xml, geometry/Linear_Interpolator.cc, geometry/Makefile.am, geometry/Makefile.in, include/vamos/geometry/Interpolator.h, include/vamos/geometry/Linear_Interpolator.h, include/vamos/geometry/Makefile.am, include/vamos/geometry/Makefile.in, include/vamos/track/Road_Segment.h, include/vamos/track/Strip_Track.h, track/Road_Segment.cc, track/Strip_Track.cc:
	Added variable-width tracks.

2003-03-14  Sam Varner  <snick-a-doo@attbi.com>

	* geometry/Spline.cc, include/vamos/geometry/Spline.h, test/spline.cc:
	Added method for horizontal scaling.  Handle the case where there's
	only one point.

	* geometry/Material.cc, geometry/Surface.cc, include/vamos/geometry/Material.h, include/vamos/geometry/Surface.h, body/Body.cc, body/Contact_Point.cc, body/Tire.cc, body/Wheel.cc, geometry/Makefile.am, geometry/Makefile.in, include/vamos/body/Body.h, include/vamos/body/Contact_Point.h, include/vamos/body/Particle.h, include/vamos/body/Tire.h, include/vamos/body/Wheel.h, include/vamos/geometry/Makefile.am, include/vamos/geometry/Makefile.in, include/vamos/track/Road_Segment.h, include/vamos/track/Strip_Track.h, include/vamos/track/Track.h, include/vamos/world/Car_World.h, track/Road_Segment.cc, track/Strip_Track.cc, world/Car_World.cc:
	Removed Surface class.  Materal is used instead.

2003-03-09  Sam Varner  <snick-a-doo@attbi.com>

	* include/vamos/track/Makefile.am, include/vamos/track/Makefile.in, include/vamos/track/Road_Segment.h, include/vamos/track/Strip_Track.h, include/vamos/track/Track.h, track/Makefile.am, track/Makefile.in, track/Road_Segment.cc, track/Strip_Track.cc, track/Track.cc, world/Gl_Car_World.cc:
	Re-organized track clases.

2003-02-26  Sam Varner  <snick-a-doo@attbi.com>

	* include/vamos/track/Track.h, include/vamos/world/Car_World.h, include/vamos/world/Gl_Car_World.h, track/Track.cc, world/Car_World.cc, world/Gl_Car_World.cc:
	Refactored class Track to remove implementation-dependent stuff from
	the interface.

2003-01-28  Sam Varner  <snick-a-doo@attbi.com>

	* include/vamos/world/Car_World.h, world/Car_World.cc, world/Gl_Car_World.cc:
	Improved resetting.

	* data/cars/F1-1967.xml, data/cars/F1.xml, data/cars/GT.xml, data/cars/front-drive.xml:
	Added new cars.

2003-01-20  Sam Varner  <snick-a-doo@attbi.com>

	* include/vamos/world/Gl_Car_World.h, world/Gl_Car_World.cc:
	Added pause functionality.

2003-01-18  Sam Varner  <snick-a-doo@attbi.com>

	* body/Transmission.cc, include/vamos/body/Transmission.h:
	Added constructor that calculates gear ratios.

	* body/Car.cc, include/vamos/body/Car.h:
	Added XML reader for the drivedrain.

2003-01-06  Sam Varner  <snick-a-doo@attbi.com>

	* track/Road_Segment.cc: Allow the track to be build without textures.

2002-12-31  Sam Varner  <snick-a-doo@attbi.com>

	* include/vamos/world/Car_World.h, world/Car_World.cc, world/Gl_Car_World.cc:
	Made algorithm for finding the road segment iterative instead of
	recursive.  Fail after all segments are checked.

	* track/Road_Segment.cc, track/Track.cc, include/vamos/track/Road_Segment.h, include/vamos/track/Track.h:
	Added the ability to set the total track length.

	* include/vamos/body/Wheel.h:
	single_contact() returns true when bottomed out.

	* body/Car.cc, body/Drivetrain.cc, body/Gl_Car.cc, include/vamos/body/Car.h, include/vamos/body/Drivetrain.h, include/vamos/body/Engine.h:
	Drivetrain now keeps pointers instead of references to the components.

2002-12-27  Sam Varner  <snick-a-doo@attbi.com>

	* data/sounds/Makefile.in: Added sounds.

	* vamos/Makefile.am, vamos/Makefile.in:
	Moved from Expat to SimGear's XML parser.

	* data/sounds/Makefile.am, data/sounds/crash.wav, data/sounds/rumble.wav, data/sounds/wind.wav:
	Added sound files.

	* body/Gl_Car.cc, include/vamos/body/Gl_Car.h, include/vamos/world/Car_World.h, include/vamos/world/Gl_Car_World.h, world/Car_World.cc, world/Gl_Car_World.cc:
	Allowed sounds to correspond to different suface materials.

	* body/Car.cc, include/vamos/body/Car.h, include/vamos/track/Track.h, track/Track.cc:
	Moved from Expat to SimGear's XML parser.

2002-12-22  Sam Varner  <snick-a-doo@attbi.com>

	* body/Frame.cc: Fixed mistake in transform_in().

	* body/Contact_Point.cc, body/Particle.cc, body/Wheel.cc, data/tracks/Magny-Cours.xml, data/tracks/Mosport.xml, data/tracks/Nurburgring.xml, data/tracks/Peanut.xml, data/tracks/Silverstone.xml, data/tracks/default_track.xml, data/tracks/drag.xml, data/tracks/jump.xml, data/tracks/skid_pad.xml, geometry/Surface.cc, include/vamos/body/Contact_Point.h, include/vamos/body/Particle.h, include/vamos/geometry/Surface.h, include/vamos/track/Track.h, include/vamos/world/Car_World.h, track/Track.cc, vamos/car.cc, world/Car_World.cc, world/Gl_Car_World.cc:
	Added support for material-specific sounds.

2002-12-20  Sam Varner  <snick-a-doo@attbi.com>

	* vamos/vamos.cc: Added a parameter for the maximum time step.

	* data/tracks/Magny-Cours.xml, data/tracks/Makefile.in, data/tracks/Mosport.xml, data/tracks/Nurburgring.xml, data/tracks/Peanut.xml, data/tracks/Silverstone.xml, data/tracks/default_track.xml, data/tracks/drag.xml, data/tracks/jump.xml, data/tracks/skid_pad.xml, geometry/Surface.cc, include/vamos/geometry/Surface.h, track/Track.cc, world/Car_World.cc:
	Added bumpiness.

2002-12-19  Sam Varner  <snick-a-doo@attbi.com>

	* include/vamos/world/Gl_Car_World.h, world/Gl_Car_World.cc:
	Added a parameter for the maximum time step.


2002-12-14  Sam Varner  <snick-a-doo@attbi.com>

	* data/tracks/Makefile.am: Added XML track definitions.

	* vamos/vamos.cc: Added command line options.

	* vamos/trk-convert: Create XML track files.

	* body/Car.cc, include/vamos/body/Car.h:
	Modifed Key_Control so that it can be asked to finish the current
	action before starting the next.  Used for shifting to ensure that the
	clutch is fully depressed before it is released.

	* body/Body.cc, body/Contact_Point.cc, body/Tire.cc, body/Wheel.cc, geometry/Surface.cc, geometry/Texture_Image.cc, include/vamos/body/Body.h, include/vamos/body/Contact_Point.h, include/vamos/body/Particle.h, include/vamos/body/Tire.h, include/vamos/body/Wheel.h, include/vamos/geometry/Handle.h, include/vamos/geometry/Makefile.am, include/vamos/geometry/Makefile.in, include/vamos/geometry/Surface.h, include/vamos/geometry/Texture_Image.h, include/vamos/track/Road_Segment.h, include/vamos/world/Car_World.h, track/Road_Segment.cc, track/Track.cc, world/Car_World.cc:
	Use a reference-counting handle for Surface and Material pointers.

	* vamos/drag.cc, vamos/jump.cc, vamos/magny-cours.cc, vamos/mosport.cc, vamos/silverstone.cc, vamos/skid_pad.cc, vamos/track.h, vamos/track1.cc, vamos/track2.cc:
	Removed C++ track definitions.

	* data/Makefile.am, data/Makefile.in, configure, configure.ac, data/tracks/Magny-Cours.xml, data/tracks/Makefile.am, data/tracks/Makefile.in, data/tracks/Mosport.xml, data/tracks/Nurburgring.xml, data/tracks/Peanut.xml, data/tracks/Silverstone.xml, data/tracks/default_track.xml, data/tracks/drag.xml, data/tracks/jump.xml, data/tracks/skid_pad.xml:
	Added XML track definitions.

2002-12-06  Sam Varner  <snick-a-doo@attbi.com>

	* vamos/Makefile.am: Use XML parser to read in the track.

	* vamos/track.cc, vamos/vamos.cc: Use XML parser to read in the track.

	* include/vamos/track/Gl_Track.h, include/vamos/track/Track.h, track/Gl_Track.cc, track/Road_Segment.cc, track/Track.cc:
	Added an XML parser for tracks.

	* geometry/Surface.cc, include/vamos/geometry/Surface.h:
	Separated material properties from the Surface class.

	* body/Aerodynamic_Device.cc, body/Body.cc, body/Car.cc, body/Contact_Point.cc, body/Particle.cc, body/Wheel.cc, include/vamos/body/Aerodynamic_Device.h, include/vamos/body/Body.h, include/vamos/body/Car.h, include/vamos/body/Contact_Point.h, include/vamos/body/Particle.h, include/vamos/body/Wheel.h, include/vamos/world/Car_World.h, world/Car_World.cc:
	Re-structured collision handling.

2002-08-24  Sam Varner  <snick-a-doo@attbi.com>

	* geometry/Three_Matrix.cc, geometry/Three_Vector.cc:
	Guard against self-assignment.

	* body/Suspension.cc, include/vamos/body/Suspension.h, vamos/car.cc:
	Implemented circular trajectory for the suspension.

2002-08-06  Sam Varner  <snick-a-doo@attbi.com>

	* body/Car.cc, body/Drivetrain.cc, body/Engine.cc, include/vamos/body/Engine.h, vamos/Vamos_Car.cc, vamos/car.cc:
	The engine is now a Particle that exerts a torque on the body.

2002-08-05  Sam Varner  <snick-a-doo@attbi.com>

	* body/Suspension.cc, body/Wheel.cc, include/vamos/body/Suspension.h, include/vamos/body/Wheel.h:
	Moved all of the geometry stuff from Wheel to Suspension.

	* body/Body.cc, body/Car.cc, body/Gl_Car.cc, include/vamos/body/Car.h, include/vamos/body/Contact_Point.h, include/vamos/body/Gl_Car.h, vamos/Vamos_Car.cc, vamos/Vamos_Car.h, vamos/car.cc, vamos/car.h, vamos/vamos.cc:
	Got rid of the separate wheel vector in the car.  Integrated new
	interface for Particle and friends.

2002-08-03  Sam Varner  <snick-a-doo@attbi.com>

	* body/Aerodynamic_Device.cc, body/Contact_Point.cc, body/Exerter.cc, body/Fuel_Tank.cc, body/Makefile.am, body/Makefile.in, body/Particle.cc, body/Suspension.cc, body/Wheel.cc, include/vamos/body/Component.h, include/vamos/body/Contact_Point.h, include/vamos/body/Exerter.h, include/vamos/body/Makefile.am, include/vamos/body/Makefile.in, include/vamos/body/Particle.h, include/vamos/body/Suspension.h, include/vamos/body/Tire.h, include/vamos/body/Wheel.h, vamos/car.cc:
	Re-organized the classes for the car parts.  Removed class Component,
	and added class Exerter and class Contact_Point.

2002-07-15  Sam Varner  <snick-a-doo@attbi.com>

	* vamos/car.cc:
	Reverted the damper values now that the suspension is being propagated correctly.

	* include/vamos/body/Suspension.h: Added comments.

	* body/Tire.cc: Adjusted the sound level for sliding.

	* body/Suspension.cc, include/vamos/body/Suspension.h:
	Fixed propagation problem.  Removed unnecesary data members.

	* body/Car.cc, body/Suspension.cc, include/vamos/body/Suspension.h:
	Reversed the order of the rewind() and find_forces() calls.  It
	doesn't seem to make a difference, but I think it makes more sense.

2002-06-29  Sam Varner  <snick-a-doo@attbi.com>

	* include/vamos/body/Wheel.h:
	Removed declaration of CASTER_AXIS and CAMBER_AXIS.

	* body/Wheel.cc:
	Don't change the orientation of the coordinate system for caster and
	camber adjustments.  The x and y forces need to be in the plane of the
	road.

2002-06-29  Sam Varner  <snick-a-doo@attbi.com>

	* body/Wheel.cc:
	Don't change the orientation of the coordinate system for caster and
	camber adjustments.  The x and y forces need to be in the plane of the
	road.

2002-06-26  Sam Varner  <snick-a-doo@attbi.com>

	* vamos/Vamos_Car.cc: Display slip ratios instead of wheel velocities.

	* include/vamos/body/Aerodynamic_Device.h, include/vamos/body/Body.h, include/vamos/body/Component.h, include/vamos/body/Drivetrain.h, include/vamos/body/Engine.h, include/vamos/body/Particle.h, include/vamos/body/Suspension.h, include/vamos/body/Tire.h, include/vamos/body/Wheel.h, body/Aerodynamic_Device.cc, body/Body.cc, body/Car.cc, body/Drivetrain.cc, body/Engine.cc, body/Particle.cc, body/Suspension.cc, body/Wheel.cc:
	Implemented midpoint propagation.

2002-06-25  Sam Varner  <snick-a-doo@attbi.com>

	* body/Tire.cc:
	Implemented midpoint propagation methods.  Fixed low-speed behavior of
	tire friction.

2002-06-14  Sam Varner  <snick-a-doo@attbi.com>

	* body/Tire.cc:
	Set the torque to zero when the tire loses contact.  Adjusted the
	low-speed limit of the magic formula.

2002-06-12  Sam Varner  <snick-a-doo@attbi.com>

	* body/Drivetrain.cc:
	Call Clutch::drag() before checking to see if the clutch is engaged.

	* include/vamos/body/Clutch.h, body/Clutch.cc:
	Added a locking threshold to aviod oscillations when the engine an
	transmission speeds are nearly the same.

2002-06-05  Sam Varner  <snick-a-doo@attbi.com>

	* world/Car_World.cc:
	A Body now determines its own angular velocity instead of getting it
	as an argument to contact().

	* include/vamos/body/Wheel.h:
	Wheel::contact() now takes an angular velocity vector instead of a
	scalar.

	* include/vamos/body/Tire.h: Removed unused width member.

	* include/vamos/body/Particle.h:
	Particle::contact() now takes an angular velocity vector instead of a
	scalar.

	* include/vamos/body/Car.h, include/vamos/body/Body.h:
	A Body now determines its own angular velocity instead of getting it
	as an argument to contact().

	* geometry/Surface.cc, include/vamos/geometry/Surface.h:
	Added a surface drag property to Surface.

	* body/Wheel.cc:
	Added the suspension's motion and caster's effect on instantaneous
	camber.

	* body/Tire.cc:
	Added surface drag.  Initial attempt at fixing very-low-speed behavior.

	* body/Particle.cc:
	Particle::contact() now takes an angular velocity vector instead of a
	scalar.

	* body/Engine.cc: Modified stalling behavior slightly.

	* body/Car.cc, body/Body.cc:
	A Body now determines its own angular velocity instead of getting it
	as an argument to contact().

2002-06-05  Sam Varner  <snick-a-doo@attbi.com>

	* world/Car_World.cc, body/Car.cc, body/Body.cc, include/vamos/body/Car.h, include/vamos/body/Body.h:
	A Body now determines its own angular velocity instead of getting it
	as an argument to contact().

	* body/Particle.cc, include/vamos/body/Wheel.h, include/vamos/body/Particle.h::
	Wheel::contact() now takes an angular velocity vector instead of a
	scalar.

	* geometry/Surface.cc, include/vamos/geometry/Surface.h:
	Added a surface drag property to Surface.

	* body/Wheel.cc:
	Added the suspension's motion and caster's effect on instantaneous
	camber.

	* body/Tire.cc:
	Added surface drag.  Initial attempt at fixing very-low-speed behavior.

	* body/Engine.cc: Modified stalling behavior slightly.

2002-05-29  Sam Varner  <snick-a-doo@attbi.com>

	* body/Engine.cc, include/vamos/body/Engine.h:
	Engine speed at peak power is now specified in RPM.

	* body/Tire.cc:
	Added the correct reaction torque when accelerating and braking.

2002-05-18  Sam Varner  <snick-a-doo@attbi.com>

	* include/vamos/body/Tire.h:
	Changed the interface of the Tire_Friction class.

	* include/vamos/body/Body.h, body/Body.cc:
	Changed velocity() to report the velocity of the body frame's origin
	when no argument is given.

	* include/vamos/geometry/Three_Matrix.h, geometry/Three_Matrix.cc:
	Added euler_angles() to return the x,y,z Euler angles for the current
	orientation.

2002-05-17  Sam Varner  <snick-a-doo@attbi.com>

	* body/Tire.cc: Include Fx and Fy interaction in tire friction.

2002-05-11  Sam Varner  <snick-a-doo@attbi.com>

	* body/Tire.cc, include/vamos/body/Tire.h:
	Added a quadratic rolling resistance member and constructor argument.

	* vamos/car.cc: Pass the maximum power and the engine speed at which
	the maximum power is obtained to the engine constructor.  Increased
	brake pressure.  Lowered the center of mass.

	* include/vamos/body/Engine.h, body/Engine.cc:
	Changed torque_map() to use the model presented in Genta's "Motor
	Vehicle Dynamics."  The maximum power and the engine speed at which
	the maximum power is obtained are passed as constructor arguments
	instead of the gas and friction factors.

2002-04-22  Sam Varner  <snick-a-doo@attbi.com>

	* geometry/Surface.cc: Handle null texture file names.

	* body/Aerodynamic_Device.cc, include/vamos/body/Aerodynamic_Device.h, include/vamos/body/Body.h, body/Body.cc, world/Car_World.cc:
	Added air density parameter to wind().

2002-04-02  Sam Varner  <snick-a-doo@attbi.com>

	* include/vamos/geometry/Inertia_Tensor.h, geometry/Inertia_Tensor.cc:
	Added inertia (const Three_Vector&) for returing the inertia for a
	rotation about a vector.

	* world/Car_World.cc, include/vamos/body/Wheel.h, body/Wheel.cc,
	include/vamos/body/Car.h, body/Car.cc: 
	wheel_contact() now takes the full angular momentum vetcor as an
	argument.

	* include/vamos/body/Particle.h: Added torque_position().

	* include/vamos/body/Engine.h, body/Engine.cc::
	Made the start speed, stall speed and idle throttle constructor
	parameters.

	* body/Tire.cc:
	Removed reaction torques until I know how to do them right.

	* body/Body.cc:
	Moved call to update_center_of_mass() to the beginning of
	propagate().

	Handle torques applied to places other than the center of mass.

2002-03-26  Sam Varner  <snick-a-doo@attbi.com>

	* include/vamos/body/Tire.h, body/Tire.cc:
	Added Tire_Friction helper class.

2002-03-11  Sam Varner  <snick-a-doo@attbi.com>

	* vamos/vamos.cc:
	Changed the driver's view.  Decreased the max steer angle.

	* include/vamos/geometry/Conversions.h:
	Added pi to the Vamos_Geometry namespace.  It takes the value of M_PI
	if defined.

	* include/vamos/body/Car.h, body/Car.cc::
	Removed dependence on PLIB.  Removed number of wheels == 4 requirement.

	* body/Brake.cc:
	Made the locking threshold proportional to the force of the brake pads.

	* include/vamos/body/Tire.h, body/Tire.cc:
	Implemented "magic equation" tire friction model.

	* include/vamos/world/Gl_Car_World.h:
	Added a car() method that returns a Gl_Car*.

	* include/vamos/geometry/Conversions.h:
	Added pi to the Vamos_Geometry namespace.  It takes the value of M_PI
	if defined.

	* body/Spring_Device.cc, include/vamos/body/Spring_Device.h:
	Removed no-longer-used Spring_Device class.

	* body/Car.cc, include/vamos/body/Car.h:
	Removed dependence on PLIB.  Removed number of wheels == 4 requirement.

	* body/Brake.cc:
	Made the locking threshold proportional to the force of the brake pads.

	* include/vamos/body/Tire.h, body/Tire.cc:
	Implemented "magic equation" tire friction model.

2002-03-01  Sam Varner  <snick-a-doo@attbi.com>

	* world/Gl_Car_World.cc:
	Adjust the aspect ratio according to the window dimensions so that the
	views are correct regardless of the window geometry.

	* include/vamos/body/Drivetrain.h:
	Removed unused m_left_torque and m_right_torque members.  The
	left_torque() and right_torque() methods are now only wrappers around
	the differential's methods.

2002-02-27  Sam Varner  <snick-a-doo@attbi.com>

	* world/Gl_Car_World.cc:
	The engine no longer has a method for reporting RPM.  Use the
	rotational_speed() method and convert with rad_s_to_rpm().

2002-02-17  Sam Varner  <snick-a-doo@attbi.com>

	* vamos/vamos.cc:
	Increased maximum steer angle from 15 to 20 degrees.  Use the new
	steer_exponent() method of Gl_Car_World to set non-linearity.

	* doc/vamos.info:
	Added entries in the Tuning section for the stiffness and
	slip_constant tire parameters.

	* body/Drivetrain.cc:
	Used the appropriate egnaged flag in calls to Engine::torque().

2002-02-16  Sam Varner  <snick-a-doo@attbi.com>


	* include/vamos/world/Gl_Car_World.h:
	Added steer_exponent() for setting the steering non-linearity.

	* world/Gl_Car_World.cc:
	Initialize m_steer_exponent to 1.0.  It can be changed with the new
	method, steer_exponent().

	* vamos/car.cc: Increased max_pressure for braking.

	Removed no longer used slip parameter.  Renamed slip_torque_constant
	to slip_constant.  Added stiffness parameter for tires.

	Changed index to wheel array in last call to camber() from
	Car::RIGHT_REAR to Car::LEFT_REAR.  This caused the right rear wheel's
	camber to be set the left wheel's value.  The left wheel's camber was
	left at 0.0.

	* body/Tire.cc, include/vamos/body/Tire.h:
	Replaced slip angle parameters with a Spring_Device.

	Added a stiffness parameter to the constructor for setting the spring
	constant of mp_spring.

2002-02-13  Sam Varner  <snick-a-doo@attbi.com>

	* include/vamos/body/Engine.h, body/Engine.cc:
	When the engine is forced to match the transmission's speed, a torque
	equal to the torque needed to change the engine's speed by the
	required amount is added to the output torque.

	A member, m_impulse, is used to store the change in the engine's
	angular momentum.  The torque() method now takes a boolean argument
	that tells if the clutch is engaged.

	Don't use the engine's torque to change the engine's speed when the
	clutch is engaged.

2002-02-09  Sam Varner  <spvarner@atl.mediaone.net>
	
	* include/vamos/body/Spring_Device.h:
	Added set methods for damping.  Added get method for spring constant.

2002-02-07  Sam Varner  <spvarner@atl.mediaone.net>

	* configure:
	Put the check for ulInit in PLIB between AC_LANG_CPLUSPLUS and
	AC_LANG_C directives.  This forces linking the test program with C++.

2002-02-06  Sam Varner  <spvarner@atl.mediaone.net>

	* world/Gl_Car_World.cc:
	Made 0.03 seconds the maximum frame rate.  This may be a bit small for
	a maximum, but it prevents instability on startup.

	* world/Car_World.cc:
	Use dynamic_cast()s to determine if a particle is a wheel rather than
	assuming that the first ones are the wheels.

	* vamos/Vamos_Car.h:
	The Vamos_Car constructor now takes const references to vectors instead
	of actual vectors.

	* include/vamos/body/Transmission.h:
	The number of consectuive forward gears is counted each time a gear is
	added.  This elliminates the need to specify the number of gears in
	the constructor.

	* include/vamos/body/Gl_Car.h:
	The Gl_Car constructor now takes const references to vectors instead
	of actual vectors.

2002-02-05  Sam Varner  <spvarner@atl.mediaone.net>

	* vamos/Makefile.in, vamos/Makefile.am:
	Added installation target for the trk-convert script.  Added the other
	tracks to the distribution.

	* vamos/trk-convert:
	Added the contents of trk-convert-header to trk-convert.  It is now a
	stand-alone script.

2002-02-03  Sam Varner  <spvarner@atl.mediaone.net>

	* doc/vamos.texi:
	A rewrite of the manual.  Added Driver's and Constructor's manuals.
	The code manual still needs to be written.

2002-01-17  Sam Varner  <spvarner@atl.mediaone.net>

	* body/Brake.cc, body/Body.cc, body/Aerodynamic_Device.cc:
	Put standard library names in the std namespace.

2002-01-15  Sam Varner  <spvarner@atl.mediaone.net>

	* vamos/track.cc, vamos/silverstone.cc:
	Made the plateau after Copse less noticable.

2002-01-15  Sam Varner  <spvarner@atl.mediaone.net>

	* body/Body.cc:
	Moved the call to update_center_of_mass() to the beginning of propagate().

	* geometry/Inertia_Tensor.cc, include/vamos/geometry/Inertia_Tensor.h:
	Added a definition for zero() which calls Three_Matrix::zero() and
	sets m_mass to 0.0.  Before, only the base class's zero() was called
	and m_mass grew each time the inertia tensor was rebuilt.

2002-01-12  Sam Varner  <spvarner@atl.mediaone.net>

	* include/vamos/body/Car.h:
	Removed m_fuel member.  Added Fuel_Tank* mp_fuel_tank.

	* world/Gl_Car_World.cc:
	The f key now causes the car's fuel tank's fill() method to be called.

	* body/Car.cc:
	Use the Fuel_Tank member pointer mp_fuel_tank to handle fuel
	consumption.  Removed the member m_fuel.

	* body/Body.cc:
	Added call to update_center_of_mass() in propagate().  This is a
	fairly expensive function, but it calling it every time step does not
	affecte performance on my machine.

	* include/vamos/body/Fuel_Tank.h, body/Fuel_Tank.cc:
	Added Fuel_Tank class.  It's a Particle whose mass changes depending
	on the amount of fuel left in the tank.

	* vamos/Vamos_Car.cc:
	Show the amount of fuel remaining on the dashboard.

	* include/vamos/body/Car.h, body/Car.cc: Handle fuel consumption.

	* body/Aerodynamic_Device.cc: Corrected the direction of lift.

	* body/Engine.cc, include/vamos/body/Engine.h:
	The engine can now report its fuel consumption.

	* body/Tire.cc:
	Updated Tire to use the modified Spring_Device; changed the sign of
	the force and added a second damping value.

	* body/Spring_Device.cc:
	Turned the damping into two variables, one for movement away from
	equilibrium and one for movement toward equilibrium.

	Changed the sign of the force calculated in propagate().

	* include/vamos/body/Spring_Device.h:
	Turned the damping into two variables, one for movement away from
	equilibrium and one for movement toward equilibrium.


	* world/Car_World.cc:
	In interact(), call the Body's wind() method so that the wind will be
	transformed into the body frame.  The Body calls the
	Aerodynamic_Device's wind() method.

	* body/Aerodynamic_Device.cc:
	Use the wind projected onto the x-axis for calculating lift.

	* include/vamos/body/Body.h, body/Body.cc:
	Added the wind() method.  This is called in Car_World::interact().
	The Body transforms the wind into the body frame and then calls the
	Aerodynamic_Device's wind() method.


2002-01-11  Sam Varner  <spvarner@atl.mediaone.net>

	* world/Atmosphere.cc, include/vamos/world/Atmosphere.h:
	Filled out the Atmosphere class.

	* world/Car_World.cc: Added interaction with the atmosphere.

	* include/vamos/body/Aerodynamic_Device.h, body/Aerodynamic_Device.cc:
	Added the Aerodynamic_Device class, a Particle that produces drag and
	lift.

2002-01-07  Sam Varner  <spvarner@atl.mediaone.net>

	* include/vamos/body/Tire.h:
	Tire uses a Spring_Device to model the deformation of the tire under
	acceleration, braking and cornering.  A copy constructor was added so
	that the Spring_Device pointed to is copied correctly.

	* include/vamos/body/Suspension.h:
	When the compression velocity is too high (>
	m_max_compression_velocity) the damper locks up and the suspension
	does not give.  The result is a hard collision.

	* doc/vamos.info, doc/vamos.texi:
	Added some more documentation to the Physics and Simulation chapter.

	* body/Wheel.cc:
	Removed the effect of camber and caster on the position of the contact
	patch.  I couldn't figure out how to do this correctly.  I don't
	expect those corrections to have a noticable effect on the simulation
	anyway.

	* body/Tire.cc:
	Tire uses a Spring_Device to model the deformation of the tire under
	acceleration, braking and cornering.  A copy constructor was added so
	that the Spring_Device pointed to is copied correctly.

	* body/Suspension.cc: When the compression velocity is too high (>
	m_max_compression_velocity) the damper locks up and the suspension
	does not give.  The result is a hard collision.

	* include/vamos/body/Spring_Device.h, body/Spring_Device.cc:
	Added Spring_Device, a class for spring-like objects.

2002-01-07  Sam Varner  <spvarner@atl.mediaone.net>

	* vamos/vamos.cc:
	Use Body::lowest_contact_position() for the initial placement of the car.

	* body/Tire.cc, include/vamos/body/Tire.h:
	Tire uses a Spring_Device to model the deformation of the tire under
	acceleration, braking and cornering.  A copy constructor was added so
	that the Spring_Device pointed to is copied correctly.

	* body/Suspension.cc, include/vamos/body/Suspension.h:
	When the compression velocity is too high (>
	m_max_compression_velocity) the damper locks up and the suspension
	does not give.  The result is a hard collision.

	* body/Wheel.cc:
	Removed the effect of camber and caster on the position of the contact
	patch.  I couldn't figure out how to do this correctly.  I don't
	expect those corrections to have a noticable effect on the simulation
	anyway.

	* include/vamos/body/Spring_Device.h, body/Spring_Device.cc:
	Added Spring_Device, a class for spring-like objects.

2002-01-05  Sam Varner  <spvarner@atl.mediaone.net>

	* body/Wheel.cc:
	Added a reaction torque that's applied to the body under acceleration
	and braking.

	* body/Tire.cc: Adjusted the friction function.

	* body/Brake.cc:
	Set torque to 0.0 when the brakes are locked.  Set m_is_locked to
	false when the locked condition is not met.

	* include/vamos/body/Body.h, body/Body.cc:
	Added lowest_contact_position() method.  This function returns the
	smallest z-value of the particles.

	* vamos/silverstone.cc, vamos/track.cc, vamos/trk-convert-header:
	Adjusted the gravel friction parameters.

2002-01-01  Sam Varner  <spvarner@atl.mediaone.net>

	* vamos/silverstone.cc:
	Made the Silverstone circuit a little more accurate.

	* vamos/track.cc: Made Silverstone the default track.

2001-12-29  Sam Varner  <spvarner@atl.mediaone.net>

	* body/Tire.cc:
	Removed m_slip_damp member.  This was used to provide damping for the
	slip angle.  Without it the slip angle oscillated when driving at high
	speed.  But the damping term caused instabilities.

	Added a limit to the rate-of-change of the slip angle.  This reduces
	oscillations without introducing instabilites.

	* include/vamos/body/Tire.h: Removed m_slip_damp member.

2001-12-20  Sam Varner  <spvarner@atl.mediaone.net>

	* vamos/track.cc: Made Magny-Cours the default track.

	* vamos/silverstone.cc: Added some elevation changes.

	* vamos/vamos.cc:
	Lowered the max steering angle for better control at high speeds.

	* vamos/car.cc: Re-added some mass to the front.

	* data/textures/wall.ppm, data/textures/grass.ppm, data/textures/gravel.ppm, data/textures/track.ppm:
	Lowered the resolution on the textures to improve efficency.

	* body/Brake.cc:
	Use the absolute value of the velocity when determining if the brakes
	are locked.

	* configure, configure.in: Raised the version to 0.1.6.

2001-12-20  Sam Varner  <spvarner@atl.mediaone.net>

	* include/vamos/body/Car.h:
	Created an accessor gear() for m_new_gear.  This is used to find the
	last gear selected even if the transmission hasn't yet shifted into
	that gear.

	* world/Gl_Car_World.cc:
	Fixed slow clutching when shifting to second.  The intentional delay
	in shifting means that we may not actually be in second when we engage
	the clutch.  Instead of asking the transmission what gear it's in, we
	ask the car for the lask gear selected.  We should make a horrible
	grinding noise, but that might be too annoying.

	* track/Road_Segment.cc:
	Fixed a problem with Arc_Road::coordinates() that caused a crash when
	you went the wrong way around the track.

	* include/vamos/body/Tire.h, body/Tire.cc:
	Added a damping term to the slip angle.  This helps reduce slip angle
	oscillations.

	* track/Road_Segment.cc:
	Made Arc_Road::coordinates() work with curves that are longer than 180
	degrees.

2001-12-17  Sam Varner  <spvarner@atl.mediaone.net>

	* vamos/trk-convert:
	Improved the process of deciding if radians or distance is used to set
	the length of a curve.  Added code to handle degrees.  Added options
	for forcing the program to assume radians, degrees or length.

2001-12-16  Sam Varner  <spvarner@atl.mediaone.net>

	* vamos/trk-convert-header:
	Added the file with C++ lines used by trk-convert.

	* world/Gl_Car_World.cc:
	The minimum and maximum dimensions are now doubles.  Modified the
	calculation of the arguments for glOrtho.

	* include/vamos/track/Road_Segment.h:
	Made the minimum and maximum dimensions doubles because they are lengths.

	* track/Road_Segment.cc:
	Made the minimum and maximum dimensions doubles because they are lengths.

	Keep m_start_angle > 0 and < 2pi.

	* include/vamos/track/Track.h:
	Made the minimum and maximum dimensions doubles because they are lengths.

	* track/Track.cc:
	Made the minimum and maximum dimensions doubles because they are lengths.

	Fixed the build_circuit() method so that it works with clockwise
	tracks too.


2001-12-14  Sam Varner  <spvarner@atl.mediaone.net>

	* world/Car_World.cc:
	In center_position().  Return the z-position of the track rather than
	the car as the third element of the return vector.  This makes
	drop-height consistent when reset() is used.

	* vamos/mosport.cc: Added Mosport track from RARS.

	* body/Wheel.cc: Set the rotational velocity to 0.0 in reset().

	* body/Tire.cc: Set the rotational speed to 0.0 in reset().

	* vamos/silverstone.cc:
	Added the Silverstone British GP track converted from RARS.

	* vamos/magny-cours.cc:
	Added the Magny Cours French GP track converted from RARS.

2001-12-13  Sam Varner  <spvarner@atl.mediaone.net>

	* include/vamos/track/Road_Segment.h, track/Road_Segment.cc:
	Added members to hold the minimum and maximum x and y dimensions.
	Their values are determined in next_vertex().

	* include/vamos/track/Track.h, track/Track.cc:
	Added members to hold the minimum and maximum x and y dimensions.
	Their values are determined in build().

	* include/vamos/world/Gl_Car_World.h, world/Gl_Car_World.cc:
	Added window width and height members.  These members are used along
	with dimensions from the track to draw the track in map view with the
	correct aspect ratio.

	* vamos/trk-convert:
	Added a program for converting RARS track (.trk) files to C++ source
	files for used by Vamos.

2001-12-06  Sam Varner  <spvarner@atl.mediaone.net>

	* include/vamos/geometry/Three_Vector.h, geometry/Three_Vector.cc:
	Added angle() for determining the angle between two Three_Vectors.

	* world/Gl_Car_World.cc:
	Reduced m_steer_exponent.  Reduced m_first_clutch_time.  Use
	m_first_clutch_time when shifting into reverse as well as shifting to
	first.

	* body/Wheel.cc:
	Added camber, caster, toe and steer_angle members.  Take these values
	into account when calculating the contact position.  Pass the camber
	to Tire::input().

	* body/Tire.cc:
	Removed no-longer-used m_direction member.  Added m_camber and
	m_camber_torque.  Include the effect of camber on the tire forces.

	* body/Particle.cc:
	Re-introduced the friction term in contact().  Friction is no longer
	proportional to velocity.

	* body/Clutch.cc:
	If the engine plate is rotating more slowly than the transmission
	plate, the sign of the torque is reversed.

	* body/Brake.cc: Friction is no longer proportional to velocity.

2001-11-28  Sam Varner  <spvarner@atl.mediaone.net>

	* vamos/jump.cc: Added a track with a jump.

	* vamos/skid_pad.cc: Added a skid pad.

	* vamos/drag.cc: Added a dragstrip track.

	* track/Road_Segment.cc:
	Convert angle from degrees to radians in the Arc_Road constructor.

	* include/vamos/track/Road_Segment.h:
	Put the names of the Arc_Type enumeration constants in all caps.

2001-11-28  Sam Varner  <spvarner@atl.mediaone.net>

	* body/Wheel.cc:
	The contact method now takes position and inertia tensor arguments.

	Added reset method.

	* body/Tire.cc: Friction is no longer proportional to velocity.

	Sliding can now occur without force being applied.

	Added reset method.

	* include/vamos/body/Wheel.h:
	The contact method now takes position and inertia tensor arguments.

	Added reset method.

	* include/vamos/body/Tire.h, include/vamos/body/Suspension.h:
	Added reset method.

	* include/vamos/body/Particle.h:
	The position of the Particle and the inertia tensor are now passed to
	the contact method.

	* include/vamos/body/Body.h:
	Removed the m_inertia and m_inertia_inverse Three_Matrices.  m_inertia
	is now an Inertia_Tensor object.

	The position of the Particle and the inertia tensor are now passed to
	the Particle's contact method.

	* body/Suspension.cc:
	Added a reset method for zeroing the suspension's force.

	* body/Particle.cc:
	The position of the Particle and the inertia tensor are now passed to
	the contact method.

	* body/Clutch.cc:
	Friction is no longer proportional to the relative speed of the plates.

	* body/Car.cc:
	The position of the Particle and the inertia tensor are now passed to
	the wheel_contact method.

	* body/Body.cc:
	Removed the m_inertia and m_inertia_inverse Three_Matrices.  m_inertia
	is now an Inertia_Tensor object.

	The position of the Particle and the inertia tensor are now passed to
	the Particle's contact method.

	* world/Gl_Car_World.cc:
	Decreased the default clutch time for shifting into first from 2.0 s
	to 1.0 s.

	* include/vamos/geometry/Inertia_Tensor.h, geometry/Inertia_Tensor.cc:
	Added Inertia_Tensor class for describing the inertia tensor of a
	rigid body.

2001-11-21  Sam Varner  <spvarner@atl.mediaone.net>

	* include/vamos/body/Wheel.h, body/Wheel.cc:
	Added caster and camber adjustments.  These adjustments affect the
	orientation of the Wheel's coordinate system, but they don't yet have
	any effect on handling.

	* include/vamos/body/Particle.h, body/Particle.cc:
	Added reset method for setting the force, impulse and torque to zero.

	* body/Frame.cc:
	The guts of the rotate method have been moved to Three_Matrix.
	Frame::rotate() simply calls Three_Matrix::rotate().

	* include/vamos/body/Car.h, body/Car.cc:
	Added reset methods that call Body's reset() and also re-initialize
	the engine and gearbox.

	* body/Body.cc:
	Call each Particle's reset method in Body::reset().  Added a reset
	method that takes the position and orientation of the Body as
	arguments.

	* geometry/Three_Matrix.cc, include/vamos/geometry/Three_Matrix.h:
	Added rotate (const Three_Vector& delta_theta).  This method rotates
	the matrix about the vector `delta_theta' by an amount equal to the
	magnitude of delta_theta.

	* include/vamos/world/Car_World.h, world/Car_World.cc:
	Added methods to the Car_Info class to help with reseting the
	simulation.

	center_position() returns the world-coordinate position of the center
	of the track at the same distance along the track as the car.

	center_orientation() returns the orientation matrix that would place
	the car parallel to the road.

	reset() puts the particles back on the initial road segment.

	* track/Road_Segment.cc:
	Added angle() method for finding the angle of the track in the
	horizontal plane at a particular distance along the track.

	Changed the names of local variables named `angle'.

	* include/vamos/track/Road_Segment.h:
	Added angle() method for finding the angle of the track in the
	horizontal plane at a particular distance along the track.

	* world/Gl_Car_World.cc:
	Added a key handler for puting the car back at the starting line.
	Added a key handler for puting the car back on the track without
	changing its distance along the track.

2001-11-20  Sam Varner  <spvarner@atl.mediaone.net>

	* world/Gl_Car_World.cc:
	Added m_window to hold the ID of the window so it can be destroyed
	when we quit the application.

	Added key (q) for quitting the application.

2001-11-19  Sam Varner  <spvarner@atl.mediaone.net>

	* world/Gl_Car_World.cc:
	Use Car's two-argument control methods when using keyboard controls.
	The second arument sets how long it will take for the control to reach
	its full value.

	Added members and setting methods for the controls' time values.

	* include/vamos/body/Car.h, body/Car.cc:
	Added Key_Control class for turning switched (key or button) input
	into a gradual application of the control.

	The clutch, steering, gas and brake now use Key_Control.

2001-11-14  Sam Varner  <spvarner@atl.mediaone.net>

	* include/vamos/body/Car.h, body/Car.cc:
	Removed toe in from the calculation of the steering angle.  Toe is now
	a property of the wheel.

	* body/Wheel.cc, include/vamos/body/Wheel.h:
	Added toe adjustment.  This used to be in Car.  Toe and steering are
	implemented by rotating the Wheel's frame.

	Added static constant Three_Vector STEER_AXIS for the axis of rotation
	for steering, the z-axis of the wheel's frame.

	* geometry/Three_Vector.cc, include/vamos/geometry/Three_Vector.h:
	Removed default values from three-argument constructor.  This helps
	avoid using a double where a Three_Vector is needed.  (The double was
	assigned to the x-value, y and z were assigned the default 0.0).

	Added a default constructor that takes no args and sets all elements
	to 0.0.

2001-11-10  Sam Varner  <spvarner@atl.mediaone.net>

	* vamos/Vamos_Car.cc:
	Reduced the height of the rendered block to be the same as the highest
	particles as defined in car.cc

	* vamos/vamos.cc:
	Pass in a value for gravity to Gl_Car_World now that it makes a
	difference.  Added a commented out call to the car's cm_velocity()
	method.  This is for testing collisions by throwing the car down the
	track.  Try it, it's fun!

	* world/Car_World.cc:
	Reworked the interact() method.  The collisions of the wheels with the
	road, which are softened by the suspension, are handled separately
	from the hard collisions.  Simultaneous soft collisions are handled,
	but only one hard collision per time step.

2001-11-09  Sam Varner  <spvarner@atl.mediaone.net>

	* world/Gl_Car_World.cc:
	The gravity argument to the Gl_Car_World constructor is now honored.

	* include/vamos/body/Wheel.h, body/Wheel.cc:
	Split the contact() method into wheel_contact() and contact().
	wheel_contact() handles collisions of the wheel with the road that are
	cushioned by the suspension.  contact() handles the case where the
	suspenion is at its limit.

	* body/Particle.cc:
	Commented out the friction part of the impulse in contact().  It
	relies on the bad assumption that velocity is constant over the time
	step.  I need to find another way to handle this.

	* include/vamos/body/Car.h, body/Car.cc:
	The wheel_contact() method was added because the soft wheel contact is
	now handled separately from the hard bottoming-out contact.

	* include/vamos/body/Body.h:
	Made inertia() protected so it can be used by Car.

	Added a velocity setting method.  Good for throwing the car at the
	ground to see what breaks:)

	* body/Body.cc:
	Removed actual velocity calculations.  They don't seem to make a
	difference anymore.

	* include/vamos/body/Suspension.h:
	Added m_bottomed_out member and accessor to tell when the
	suspension is at its limit.

	* body/Suspension.cc:
	Added m_bottomed_out member to tell when the suspension is at its
	limit.

	Ignore damping for voilent collisions (rate of change of displacement
	> 5.0 m/s).  I hate to set an arbitrary limit but at that rate the
	calculated damping force is unreasonable.  I'd like to find a more
	analytical way of handling this problem.

2001-10-28  Sam Varner  <spvarner@atl.mediaone.net>

	* world/Car_World.cc:
	interact(): Body::contact() returns displacement as a Three_Vector.

	* body/Tire.cc:
	propagate(): Changed the logic a little to make the similarities
	between locked and unlocked behavior a little clearer.

2001-10-28  Sam Varner  <spvarner@atl.mediaone.net>

	* world/Car_World.cc:
	interact(): Body::contact() returns displacement as a Three_Vector.

	* body/Tire.cc:
	propagate(): Changed the logic a little to make the similarities
	between locked and unlocked behavior a little clearer.

2001-10-27  Sam Varner  <spvarner@atl.mediaone.net>

	* include/vamos/body/Particle.h, include/vamos/body/Wheel.h, include/vamos/body/Body.h:
	contact(): Return the displacement of the particle as a Three_Vector.

	* body/Wheel.cc:
	contact(): Return the displacement of the particle as a Three_Vector.

	contact(): Back-project the displacment vector (dist) onto the z-axis,
	the direction of suspension travel, to get the suspension's
	displacement.

	contact(): Use the correct impulse equation when the suspension
	bottoms out.

	* body/Particle.cc:
	contact(): Return the displacement of the particle as a Three_Vector.

	propagate(): Zero the force and impulse with the zero() method.

	* body/Body.cc:
	propagate(): Transform m_gravity into the body frame outside the
	loop over the particles.  This avoids unnecessary transformations.

	propagate(): Calculate the torque with body-frame vectors.  Do the
	translations and rotations with body-frame vectors.  Using world-frame
	vectors gives the wrong transformation.  This also avoids a bunch of
	transformations.

	velocity(): Use world-frame vectors since we want to return a
	world-frame velocity.

	contact(): Return the displacement of the particle as a Three_Vector.

2001-10-25  Sam Varner  <spvarner@atl.mediaone.net>

	* include/vamos/body/Wheel.h:
	In contact(), made distance a Three_Vector that's parallel (or
	anti-parallel) to the normal.  Got rid of the normal vector argument.

	* body/Wheel.cc:
	Project the suspension force vector onto the normal vector.

	In contact(), made distance a Three_Vector that's parallel (or
	anti-parallel) to the normal.  Got rid of the normal vector argument.

	* world/Car_World.cc:
	In contact(), made distance a Three_Vector that's parallel (or
	anti-parallel) to the normal.  Got rid of the normal vector argument.

	Exclude wheels from collisions with barriers.  We shouldn't have to do
	this, but right now, wheels hitting walls causes problems.

	* include/vamos/body/Particle.h:
	In contact(), made distance a Three_Vector that's parallel (or
	anti-parallel) to the normal.  Got rid of the normal vector argument.

	* body/Particle.cc:
	In contact(), made distance a Three_Vector that's parallel (or
	anti-parallel) to the normal.  Got rid of the normal vector argument.

	Put the correct factor in the collision impulse equation now that
	(some) collisions are more stable.

	* include/vamos/body/Body.h, body/Body.cc:
	Made velocity() report the actual velocity of the body taking into
	account any collisions or other adjustments made after propagate() was
	called.   This is done by subtracting the current position of the
	center of mass at the beginning of propagte() from the previous value
	and dividing by the time step.  I'm assuming that the time step is
	about the same as the previous time step.  The members
	m_prev_cm_position and m_actual_cm_velocity were added.

	In collision, made distance a Three_Vector that's parallel (or
	anti-parallel) to the normal.  Got rid of the normal vector argument.

2001-10-23  Sam Varner  <spvarner@atl.mediaone.net>

	* body/Body.cc: Re-arranged initializers to avoid compiler warnings.

	Include the torques applied by each component in propagate().

	* include/vamos/body/Tire.h:
	Added m_slip_angle and m_slip_torque_constant members.

	Added slip_torque() function for reporting the torque applied to the
	car by the contact patch when turning.

	Added argument to the constructor for specifying the torque constant,
	that is, how much torque is applied per radian of slip angle.

	* body/Wheel.cc:
	Set the m_torque member, inherited from Component, to the value
	returned by the tire's slip_torque() method.

	* body/Tire.cc: Added m_slip_angle and m_slip_torque_constant members.

	Added slip_torque() function for reporting the torque applied to the
	car by the contact patch when turning.

	Replaced the constant factor in sinusoidal forgiveness by
	m_forgiveness.

2001-10-22  Sam Varner  <spvarner@atl.mediaone.net>

	* include/vamos/body/Component.h, include/vamos/body/Makefile.am, include/vamos/body/Makefile.in, include/vamos/body/Tire.h, include/vamos/geometry/Makefile.am, include/vamos/geometry/Makefile.in, include/vamos/track/Makefile.am, include/vamos/track/Makefile.in, include/vamos/world/Makefile.am, include/vamos/world/Makefile.in, include/vamos/world/World.h:
	Made headers install in the proper subdirectories.

	* vamos/track1.cc:
	Updated track1.cc's make_road() to take a pointer to a Gl_Track, and
	to use a vector of Surface*s instead of Surfaces.

2001-10-20  Sam Varner  <spvarner@atl.mediaone.net>

	* include/vamos/track/Track.h:
	Removed trivial destructor definition for Track.  A destructor is now
	defined in the source file.

	* vamos/vamos.cc:
	Make use of the new make_wheels(), make_parts() and make_road() that
	require pointers to empty objects.

	* vamos/track.h, vamos/track.cc:
	Pass in a pointer to a Gl_Track instead of returning a Track.

	* vamos/car.h, vamos/car.cc:
	For make_wheels() and make_parts(), pass in an empty vector of
	pointers to be filled.

	* vamos/vamos.cc:
	Make use of the new make_wheels(), make_parts() and make_road() that
	require pointers to empty objects.

	* vamos/track.h, vamos/track.cc:
	Pass in a pointer to a Gl_Track instead of returning a Track.

	* vamos/car.h, vamos/car.cc:
	For make_wheels() and make_parts(), pass in an empty vector of
	pointers to be filled.

2001-10-19  Sam Varner  <spvarner@atl.mediaone.net>

	* include/vamos/world/Car_World.h:
	Return const references rather than pointers from segment and surface
	acessors.

	* track/Track.cc:
	Added destructor for deleting segments.

	* track/Road_Segment.cc:
	Use const references to vectors for constructor arguments.  Tracks now
	compile much faster.

	Use vectors of pointers to Surfaces rather than actual Surfaces.

	Guard against deleting un-constructed objects and against re-use of
	deleted objects.

	* geometry/Surface.cc: Initialize all members.

	Added copy constructor.

	Guard against deleting un-constructed objects and against re-use of
	deleted objects.  Added framerate display.

	* world/Gl_Car_World.cc:
	Initialize all pointers to 0. Guard against deleting un-constructed
	objects and against re-use of deleted objects.

	Added framerate display.

	* world/Car_World.cc:
	Use a vector of pointers to Surfaces instead of a vector of Surfaces.
	Guard against re-use of deleted mp_car_info by setting to 0 in
	destructor.

	* body/Gl_Car.cc:
	In destructor, protected against deleting pointers unititialized
	members.

	* body/Body.cc:
	Added a destructor for deleting the parts.