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//
// "$Id: curve.cxx 5519 2006-10-11 03:12:15Z mike $"
//
// Curve test program for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2005 by Bill Spitzak and others.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems on the following page:
//
// http://www.fltk.org/str.php
//
#include <FL/Fl.H>
#include <FL/Fl_Double_Window.H>
#include <FL/Fl_Hor_Value_Slider.H>
#include <FL/fl_draw.H>
#include <FL/Fl_Toggle_Button.H>
double args[9] = {
20,20, 50,200, 100,20, 200,200, 0};
const char* name[9] = {
"X0", "Y0", "X1", "Y1", "X2", "Y2", "X3", "Y3", "rotate"};
int points;
class Drawing : public Fl_Widget {
void draw() {
fl_clip(x(),y(),w(),h());
fl_color(FL_DARK3);
fl_rectf(x(),y(),w(),h());
fl_push_matrix();
if (args[8]) {
fl_translate(x()+w()/2.0, y()+h()/2.0);
fl_rotate(args[8]);
fl_translate(-(x()+w()/2.0), -(y()+h()/2.0));
}
fl_translate(x(),y());
if (!points) {
fl_color(FL_WHITE);
fl_begin_complex_polygon();
fl_curve(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]);
fl_end_complex_polygon();
}
fl_color(FL_BLACK);
fl_begin_line();
fl_vertex(args[0],args[1]);
fl_vertex(args[2],args[3]);
fl_vertex(args[4],args[5]);
fl_vertex(args[6],args[7]);
fl_end_line();
fl_color(points ? FL_WHITE : FL_RED);
points ? fl_begin_points() : fl_begin_line();
fl_curve(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]);
points ? fl_end_points() : fl_end_line();
fl_pop_matrix();
fl_pop_clip();
}
public:
Drawing(int X,int Y,int W,int H) : Fl_Widget(X,Y,W,H) {}
};
Drawing *d;
void points_cb(Fl_Widget* o, void*) {
points = ((Fl_Toggle_Button*)o)->value();
d->redraw();
}
void slider_cb(Fl_Widget* o, void* v) {
Fl_Slider* s = (Fl_Slider*)o;
args[long(v)] = s->value();
d->redraw();
}
int main(int argc, char** argv) {
Fl_Double_Window window(300,555);
Drawing drawing(10,10,280,280);
d = &drawing;
int y = 300;
for (int n = 0; n<9; n++) {
Fl_Slider* s = new Fl_Hor_Value_Slider(50,y,240,25,name[n]); y += 25;
s->minimum(0); s->maximum(280);
if (n == 8) s->maximum(360);
s->step(1);
s->value(args[n]);
s->align(FL_ALIGN_LEFT);
s->callback(slider_cb, (void*)n);
}
Fl_Toggle_Button but(50,y,50,25,"points");
but.callback(points_cb);
window.end();
window.show(argc,argv);
return Fl::run();
}
//
// End of "$Id: curve.cxx 5519 2006-10-11 03:12:15Z mike $".
//
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