1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
/*
* This file contains the main program and driver for the raytracer.
*
* $Id: animspheres2.c,v 1.11 2002/07/03 04:59:29 johns Exp $
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <tachyon.h>
#define XRES 352
#define YRES 240
#define NUMSP 12
#define MYPI 3.1415926
#define MYTPI 6.282
/* int rt_mynode(void); */
#define MAXFRAMES 400
#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
#ifdef cube
#define RFILE "animspheres2-cube"
#endif
#ifndef cube
#define RFILE "animsphere2"
#endif
typedef struct {
apitexture tex;
apivector ctr;
apiflt rad;
apivector dir;
} 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=1.00;
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(int frame) {
int i;
for (i=0; i<6; i++) {
sp[i].ctr.x = 3.0 * sin(((i + 1.0)/6.0)*MYTPI + MYTPI*((1.0 * frame) / MAXFRAMES));
sp[i].ctr.y = 3.0 * cos(((i + 1.0)/6.0)*MYTPI + MYTPI*((1.0 * frame) / MAXFRAMES));
sp[i].ctr.z = 1.0;
}
for (i=0; i<6; i++) {
sp[i+6].ctr.x = 3.0 + 3.0 * sin(((i + 1.0)/6.0)*MYTPI + MYTPI*((1.0 * frame) / MAXFRAMES));
sp[i+6].ctr.y = 1.0;
sp[i+6].ctr.z = 3.0 * cos(((i + 1.0)/6.0)*MYTPI + MYTPI*((1.0 * frame) / MAXFRAMES));
}
}
void drawsp(SceneHandle scene) {
int i;
apitexture p1;
apivector ct1, n1;
for (i=0; i<NUMSP; i++) {
rt_sphere(scene, rt_texture(scene, &sp[i].tex), 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=-5.10;
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;
int xres, yres, raydepth, antialiasing, verbosemode;
apiflt zoom, aspectratio;
apivector Ccenter, Cview, Cup;
apivector ctr1, ctr2;
apitexture tex1, tex2;
char fname[100];
char fname2[200];
scene = rt_newscene();
xres=XRES;
yres=YRES;
aspectratio=1.0;
raydepth=18;
antialiasing=0;
verbosemode=0;
zoom=1.0;
Ccenter.x=1.5; Ccenter.y=3.0; Ccenter.z=-8.0;
Cview.x=0.0; Cview.y=-0.2; Cview.z=0.8;
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++) {
sprintf(fname,"-%4.4d.tga",i);
strcpy(fname2,RFILE);
strcat(fname2, fname);
rt_initialize(&argc, &argv);
/* if (rt_mynode()==0) */ printf("Rendering: %s \n",fname2);
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_light(scene, rt_texture(scene, &tex2), ctr2, 1.0);
movesp(i);
drawsp(scene);
rt_renderscene(scene);
}
return 0;
}
|
