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/*
* fire.c
* This file contains the main program and driver for the raytracer.
*
* $Id: hypertex.c,v 1.13 2002/07/03 04:59:29 johns Exp $
*/
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <tachyon.h>
/* int rt_mynode(void); */ /* proto */
#define XRES 352
#define YRES 240
/* MPEG-1 Resolution */
/*
*#define XRES 352
*#define YRES 240
*/
/* Pro Video Full Frame NTSC
* #define XRES 768
* #define YRES 576
*/
/* PC VGA, and NTSC Resolution
* #define XRES 640
* #define YRES 480
*/
#define MAXFRAMES 60
#define OPACITY 4.0
#define RAD 6.28
typedef struct { /* Scalar Volume Visualization Data */
int loaded; /* Volume data memory residence flag */
int xres; /* volume X axis size */
int yres; /* volume Y axis size */
int zres; /* volume Z axis size */
apiflt opacity; /* opacity per unit length */
char name[80]; /* Volume data filename */
unsigned char * data; /* pointer to raw byte volume data */
} scalarvol;
typedef struct {
int x;
int y;
} flm;
#ifdef cube
#define RFILE "hypertex-cube"
#endif
#ifndef cube
#define RFILE "hypertex"
#endif
/* global frame number */
static int framenumber=0;
apiflt hypertex1(double x, double y, double z) {
double value, dist;
double xx, yy, zz;
xx = x - 0.5;
yy = y - 0.5;
zz = z - 0.5;
dist = sqrt(xx*xx + yy*yy + zz*zz);
if (dist < 0.35) {
value = 1.0;
}
else {
value = 0.0;
}
return value;
}
apiflt hypertex2(double x, double y, double z) {
double xx, yy, zz;
double dist;
double value;
xx = x - 0.5;
yy = y - 0.5;
zz = z - 0.5;
dist = sqrt(xx*xx + yy*yy + zz*zz) + (framenumber / 200);
value = (1.0 + cos(dist * 48.0) / (2*dist + 1.0)) / 2.0;
value = value*value*value;
return value;
}
int main(int argc, char **argv) {
SceneHandle scene;
int i;
int raydepth, antialiasing, verbosemode;
apiflt zoom, aspectratio;
apivector Ccenter, Cview, Cup;
apivector ctr1;
apitexture tex1, tex2;
apivector min3, max3;
apitexture p1;
apivector ct1, n1;
apiflt xc,yc;
void * t1;
char fname[1000];
char fname2[2000];
rt_initialize(&argc, &argv);
scene = rt_newscene();
aspectratio=1.0; raydepth=8;
antialiasing=0; verbosemode=0; zoom=1.0;
Ccenter.x=0.0; Ccenter.y=0.0; Ccenter.z=0.0;
Cview.x=1.0; Cview.y=0.0; Cview.z=0.0;
Cup.x=0.0; Cup.y=0.0; Cup.z=1.0;
ctr1.x=2.0; ctr1.y=2.0; ctr1.z=2.0;
tex1.col.r=1.0; tex1.col.g=1.0; tex1.col.b=1.0;
tex1.ambient=0.5;
tex1.diffuse=1.0;
tex1.specular=0.0;
tex1.opacity=OPACITY;
tex1.texturefunc=0;
tex2=tex1;
min3.x=-1.0; min3.y=-1.0; min3.z=-1.0;
max3.x=1.0; max3.y=1.0; max3.z=1.0;
p1.col.r=1.0; p1.col.g=1.0; p1.col.b=1.0;
p1.ambient=0.3; p1.diffuse=0.8; p1.specular=0.0; p1.opacity=1.0;
p1.texturefunc=9;
p1.ctr.x=0.0; p1.ctr.y=0.0; p1.ctr.z=0.0;
p1.rot.x=0.0; p1.rot.y=0.0; p1.rot.z=0.0;
p1.scale.x=0.1; p1.scale.y=0.1; p1.scale.z=0.1;
p1.uaxs.x=1.0; p1.uaxs.y=0.0; p1.uaxs.z=0.0;
p1.vaxs.x=0.0; p1.vaxs.y=1.0; p1.vaxs.z=0.0;
#ifdef cube
strcpy((char *) &p1.imap, "imaps/leafy-cube.ppm");
#endif
#ifndef cube
strcpy((char *) &p1.imap, "imaps/leafy.ppm");
#endif
t1=rt_texture(scene, &p1);
for (i=0; i<MAXFRAMES; i++) {
rt_initialize(&argc, &argv);
sprintf(fname,"-%4.4d.tga",i);
strcpy(fname2,RFILE);
strcat(fname2, fname);
framenumber++;
/* if (rt_mynode()==0) */ printf("Rendering: %s \n",fname2);
xc=cos(6.28 * (i + 200) / (1.0 * MAXFRAMES));
yc=sin(6.28 * (i + 200) / (1.0 * MAXFRAMES));
Ccenter.x = xc*5.2;
Ccenter.y = yc*5.2;
Cview.x = -xc;
Cview.y = -yc;
rt_outputfile(scene, fname2);
rt_resolution(scene, XRES, YRES);
rt_verbose(scene, verbosemode);
rt_camera_setup(scene, zoom, aspectratio, antialiasing,
raydepth, Ccenter, Cview, Cup);
rt_light(scene, rt_texture(scene, &tex1), ctr1, 1.0);
rt_extvol(scene, rt_texture(scene, &tex2), min3, max3, 64, hypertex1);
ct1.x=0.0; ct1.y=0.0; ct1.z=-1.01;
n1.x=0.0; n1.y=0.0; n1.z=1.0;
rt_plane(scene, t1, ct1, n1);
ct1.x=0.0; ct1.y=1.8; ct1.z=1.8;
rt_renderscene(scene);
}
rt_finalize();
return 0;
}
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