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/*
* Example of how to use the xrender function.
*/
#include <stdio.h>
#include <math.h>
#include <sipp.h>
#include <primitives.h>
#define SMALLRES 15
#define BIGRES 39
extern char *optarg;
main(argc, argv)
int argc;
char **argv;
{
Object *torus;
Object *torus_pair;
Object *chain;
FILE *fp ;
Surf_desc surf;
char *imfile_name;
int mode;
int c;
int size;
imfile_name = "chain.ppm";
mode = PHONG;
size = 256;
while ((c = getopt(argc, argv, "pgfls:")) != EOF) {
switch (c) {
case 'p':
mode = PHONG;
imfile_name = "chain.ppm";
break;
case 'g':
mode = GOURAUD;
imfile_name = "chain.ppm";
break;
case 'f':
mode = FLAT;
imfile_name = "chain.ppm";
break;
case 'l':
mode = LINE;
imfile_name = "chain.pbm";
break;
case 's':
size = atoi(optarg);
break;
}
}
sipp_init();
lightsource_create(1.0, 1.0, 1.0, 0.9, 0.9, 0.9, LIGHT_DIRECTION);
lightsource_create(-1.0, -1.0, 0.5, 0.4, 0.4, 0.4, LIGHT_DIRECTION);
surf.ambient = 0.5;
surf.specular = 0.6;
surf.c3 = 0.2;
surf.color.red = 0.8;
surf.color.grn = 0.6;
surf.color.blu = 0.3;
surf.opacity.red = 1.0;
surf.opacity.grn = 1.0;
surf.opacity.blu = 1.0;
torus = sipp_torus(1.0, 0.23, BIGRES, SMALLRES, &surf, basic_shader,
WORLD);
torus_pair = object_create();
object_add_subobj(torus_pair, torus);
torus = object_instance(torus);
object_move(torus, 0.0, -1.375, 0.0);
object_rot_y(torus, M_PI / 2.0);
object_add_subobj(torus_pair, torus);
chain = object_create();
object_move(torus_pair, -1.375, 1.375, 0.0);
object_add_subobj(chain, torus_pair);
torus_pair = object_instance(torus_pair);
object_rot_z(torus_pair, M_PI / 2.0);
object_move(torus_pair, -1.375, -1.375, 0.0);
object_add_subobj(chain, torus_pair);
torus_pair = object_instance(torus_pair);
object_rot_z(torus_pair, M_PI);
object_move(torus_pair, 1.375, -1.375, 0.0);
object_add_subobj(chain, torus_pair);
torus_pair = object_instance(torus_pair);
object_rot_z(torus_pair, 3.0 * M_PI / 2.0);
object_move(torus_pair, 1.375, 1.375, 0.0);
object_add_subobj(chain, torus_pair);
object_add_subobj(sipp_world, chain);
camera_params(sipp_camera, 5.0, -2.0, 15.0, 0.5, 0.0, 0.0,
0.0, 0.0, 1.0, 0.25);
/*
* Change parameters in this call to try out
* the various features.
*/
render_ximage(size, size, mode, 2, 1, 0, 0);
sleep(20);
exit(0);
}
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