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/* animspheres.c
* This file contains a demo program and driver for the raytracer.
*
* $Id: animspheres.c,v 1.16 2011/01/31 15:26:14 johns Exp $
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <tachyon.h>
#include "glwin.h"
#if defined(USEOPENGL)
#include <GL/gl.h>
#endif
/* int rt_mynode(void); */ /* proto */
/* Number of frames to render */
#define MAXFRAMES 400
/* Number of bouncing spheres */
#define NUMSP 16
/* NTSC Resolution */
/* #define XRES 640
#define YRES 480
*/
/* MPEG-1 Resolution */
#define XRES 352
#define YRES 240
#define MAXX 1.0
#define MAXY 1.0
#define MAXZ 1.0
#define MINX -1.0
#define MINY -1.0
#define MINZ -1.0
#define LOOP 200.0
#define LOOP2 100.0
#define RAD 6.28
typedef struct {
apitexture tex;
apivector ctr;
apiflt rad;
apivector dir;
void * voidtex;
} asphere;
asphere sp[NUMSP];
apiflt randflt(void) {
long a;
apiflt f;
a=rand() % 1000;
f=(a*1.0) / 1000.0;
return f;
}
void initspheres(void) {
int i;
apiflt t1;
for (i=0; i<NUMSP; i++) {
sp[i].tex.col.r=randflt() / 3.0 + 0.66;
sp[i].tex.col.g=randflt() / 3.0 + 0.66;
sp[i].tex.col.b=randflt() / 3.0 + 0.66;
t1=randflt()*0.9;
sp[i].tex.ambient=0.1;
sp[i].tex.diffuse=t1;
sp[i].tex.specular=0.9 - t1;
sp[i].tex.opacity=1.0;
sp[i].tex.scale.x=1.0;
sp[i].tex.scale.y=1.0;
sp[i].tex.scale.z=1.0;
sp[i].tex.rot.x=0.0;
sp[i].tex.rot.y=0.0;
sp[i].tex.rot.z=0.0;
sp[i].tex.texturefunc=rand() % 7;
sp[i].ctr.x=randflt() * 2.0 - 1.0;
sp[i].ctr.y=randflt() * 2.0 - 1.0;
sp[i].ctr.z=randflt() * 2.0 - 1.0;
sp[i].rad=randflt()*0.5 + 0.05;
sp[i].dir.x=randflt() * 0.05 - 0.02;
sp[i].dir.y=randflt() * 0.05 - 0.02;
sp[i].dir.z=randflt() * 0.05 - 0.02;
}
}
void movesp(void) {
int i;
for (i=0; i<NUMSP; i++) {
sp[i].ctr.x += sp[i].dir.x;
sp[i].ctr.y += sp[i].dir.y;
sp[i].ctr.z += sp[i].dir.z;
if (sp[i].ctr.x > MAXX) {
sp[i].ctr.x = MAXX;
sp[i].dir.x = -sp[i].dir.x;
}
if (sp[i].ctr.x < MINX) {
sp[i].ctr.x = MINX;
sp[i].dir.x = -sp[i].dir.x;
}
if (sp[i].ctr.y > MAXY) {
sp[i].ctr.y = MAXY;
sp[i].dir.y = -sp[i].dir.y;
}
if (sp[i].ctr.y < MINY) {
sp[i].ctr.y = MINY;
sp[i].dir.y = -sp[i].dir.y;
}
if (sp[i].ctr.z > MAXZ) {
sp[i].ctr.z = MAXZ;
sp[i].dir.z = -sp[i].dir.z;
}
if (sp[i].ctr.z < MINZ) {
sp[i].ctr.z = MINZ;
sp[i].dir.z = -sp[i].dir.z;
}
sp[i].tex.ctr.x = sp[i].dir.x;
sp[i].tex.ctr.y = sp[i].dir.y;
sp[i].tex.ctr.z = sp[i].dir.z;
}
}
void drawsp(SceneHandle scene) {
int i;
apitexture p1;
apivector ct1, n1;
for (i=0; i<NUMSP; i++) {
sp[i].voidtex = rt_texture(scene, &sp[i].tex);
rt_sphere(scene, sp[i].voidtex, sp[i].ctr, sp[i].rad);
}
p1.col.r=1.0;
p1.col.g=1.0;
p1.col.b=1.0;
p1.ambient=0.1;
p1.diffuse=0.5;
p1.specular=0.4;
p1.opacity=1.0;
ct1.x=0.0;
ct1.y=-1.10;
ct1.z=0.0;
n1.x=0.0;
n1.y=1.0;
n1.z=0.0;
rt_plane(scene, rt_texture(scene, &p1), ct1, n1);
}
int main(int argc, char **argv) {
SceneHandle scene;
int i, xres, yres, maxframes;
apivector Ccenter, Cview, Cup;
apivector ctr1, ctr2;
apitexture tex1, tex2;
void * vtx1, * vtx2;
char fname[100];
int nosave, opengl;
void *glwin = NULL;
unsigned char *img = NULL;
rt_initialize(&argc, &argv);
nosave=0;
opengl=0;
xres=XRES;
yres=XRES;
maxframes=MAXFRAMES;
for (i=1; i<argc; i++) {
if (!strcmp("-res", argv[i])) {
if (i+2<argc) {
i++;
sscanf(argv[i], "%d", &xres);
i++;
sscanf(argv[i], "%d", &yres);
}
continue;
}
if (!strcmp("-frames", argv[i])) {
if (i+1<argc) {
i++;
sscanf(argv[i], "%d", &maxframes);
}
continue;
}
if (!strcmp("-nosave", argv[i])) {
nosave=1;
continue;
}
if (!strcmp("-opengl", argv[i])) {
opengl=1;
continue;
}
}
if (opengl) {
img = (unsigned char *) calloc(1, xres*yres*3);
if (img)
glwin = glwin_create(argv[0], xres, yres);
}
Ccenter.x=0.0; Ccenter.y=0.0; Ccenter.z=-3.0;
Cview.x=0.0; Cview.y=0.0; Cview.z=1.0;
Cup.x=0.0; Cup.y=1.0; Cup.z=0.0;
ctr1.x=20.0; ctr1.y=20.0; ctr1.z=-40.0;
ctr2.x=-20.0; ctr2.y=20.0; ctr2.z=-40.0;
tex1.col.r=1.0;
tex1.col.g=0.5;
tex1.col.b=0.0;
tex1.ambient=1.0;
tex1.opacity=1.0;
tex2=tex1;
tex2.col.r=0.0;
tex2.col.b=1.0;
initspheres();
for (i=0; i<MAXFRAMES; i++) {
scene = rt_newscene();
vtx1=rt_texture(scene, &tex1);
vtx2=rt_texture(scene, &tex2);
if (!nosave) {
sprintf(fname,"animspheres-%4.4d.tga",i);
/* if (rt_mynode()==0) */ printf("Rendering: %s\n", fname);
rt_outputfile(scene, fname);
} else {
printf("\rRendering %d... ", i);
fflush(stdout);
}
if (img != NULL)
rt_rawimage_rgb24(scene, img);
rt_resolution(scene, xres, yres);
rt_verbose(scene, 0);
rt_camera_setup(scene, 1.0, 1.0, 0, 5, Ccenter, Cview, Cup);
movesp();
drawsp(scene);
rt_light(scene, vtx1, ctr1, 1.0);
rt_light(scene, vtx2, ctr2, 1.0);
rt_renderscene(scene);
#ifdef USEOPENGL
if (opengl) {
float wscalex, wscaley, wminscale;
float wxoffset, wyoffset;
int wsx, wsy, instereo, maxx, maxy;
glwin_get_wininfo(glwin, &instereo, NULL);
glwin_get_winsize(glwin, &wsx, &wsy);
maxx=xres;
maxy=yres;
wscalex = wsx / (float) maxx;
wscaley = wsy / (float) maxy;
wminscale = (wscalex < wscaley) ? wscalex : wscaley;
wxoffset = ((wminscale * maxx) - wsx) / 2.0f;
wyoffset = ((wminscale * maxy) - wsy) / 2.0f;
glDrawBuffer(GL_BACK);
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
glClearColor(0.0, 0.0, 0.0, 1.0); /* black */
glViewport(0, 0, wsx, wsy);
glClear(GL_COLOR_BUFFER_BIT);
glShadeModel(GL_FLAT);
glViewport((int) -wxoffset, (int) -wyoffset, wsx, wsy);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.0, wsx, 0.0, wsy, -1.0, 1.0); /* flip upside-down image */
glMatrixMode(GL_MODELVIEW);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glPixelZoom(wminscale, wminscale); /* flip upside-down Tachyon image */
glwin_draw_image(glwin, xres, yres, img);
}
#endif
rt_deletescene(scene);
#if 0
for (j=0; j<NUMSP; j++)
free(sp[i].voidtex);
#endif
}
rt_finalize();
if (opengl) {
glwin_destroy(glwin);
if (img)
free(img);
}
return 0;
}
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