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#include <stdio.h>
#include <math.h>
#include <sipp.h>
#include <primitives.h>
#include <shaders.h>
#define SPHERERES 40
#define CYLRES 40
#define SIGNBIT(bit, i) (((i >> bit) & 1) ? -1.0 : 1.0)
Surf_desc surf = {
0.4,
0.7,
0.1,
{0.8, 0.6, 0.3},
{1.0, 1.0, 1.0}
};
Bumpy_desc bumpy_surf = {
basic_shader,
&surf,
14.0,
FALSE,
TRUE
};
extern char *optarg;
main(argc, argv)
int argc;
char **argv;
{
Object *sphere;
Object *cyl;
Object *structure;
FILE *fp ;
Surf_desc cyl_surf;
int i;
char *imfile_name;
int mode;
int c;
int size;
imfile_name = "structure.ppm";
mode = PHONG;
size = 256;
while ((c = getopt(argc, argv, "pgfls:")) != EOF) {
switch (c) {
case 'p':
mode = PHONG;
imfile_name = "structure.ppm";
break;
case 'g':
mode = GOURAUD;
imfile_name = "structure.ppm";
break;
case 'f':
mode = FLAT;
imfile_name = "structure.ppm";
break;
case 'l':
mode = LINE;
imfile_name = "structure.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);
cyl_surf.ambient = 0.5;
cyl_surf.specular = 0.4;
cyl_surf.c3 = 0.3;
cyl_surf.color.red = 0.5;
cyl_surf.color.grn = 0.6;
cyl_surf.color.blu = 0.8;
cyl_surf.opacity.red = 1.0;
cyl_surf.opacity.grn = 1.0;
cyl_surf.opacity.blu = 1.0;
structure = object_create();
sphere = sipp_sphere(1.0, SPHERERES, &bumpy_surf, bumpy_shader, WORLD);
for (i = 0; i < 8; i++) {
if (i) {
sphere = object_instance(sphere);
}
object_move(sphere, 2.0 * SIGNBIT(2, i), 2.0 * SIGNBIT(1, i),
2.0 * SIGNBIT(0, i));
object_add_subobj(structure, sphere);
}
cyl = sipp_cylinder(0.25, 4.0, CYLRES, &cyl_surf, basic_shader, WORLD);
for (i = 0; i < 4; i++) {
if (i) {
cyl = object_instance(cyl);
}
object_move(cyl, 2.0 * SIGNBIT(1, i), 2.0 * SIGNBIT(0, i), 0.0);
object_add_subobj(structure, cyl);
}
for (i = 0; i < 4; i++) {
cyl = object_instance(cyl);
object_rot_x(cyl, M_PI / 2.0);
object_move(cyl, 2.0 * SIGNBIT(1, i), 0.0, 2.0 * SIGNBIT(0, i));
object_add_subobj(structure, cyl);
}
for (i = 0; i < 4; i++) {
cyl = object_instance(cyl);
object_rot_y(cyl, M_PI / 2.0);
object_move(cyl, 0.0, 2.0 * SIGNBIT(1, i), 2.0 * SIGNBIT(0, i));
object_add_subobj(structure, cyl);
}
object_add_subobj(sipp_world, structure);
camera_position(sipp_camera, 10.0, -5.0, 15.0);
camera_look_at(sipp_camera, 0.0, 0.0, 0.0);
camera_up(sipp_camera, 0.0, 0.0, 1.0);
camera_focal(sipp_camera, 0.25);
printf("Rendering, wait...");
fflush(stdout);
fp = fopen(imfile_name, "w");
render_image_file(size, size, fp, mode, 2);
printf("Done.\n");
exit(0);
}
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