1 |
greg |
1.3 |
/* Copyright (c) 1991 Regents of the University of California */ |
2 |
greg |
1.1 |
|
3 |
|
|
#ifndef lint |
4 |
|
|
static char SCCSid[] = "$SunId$ LBL"; |
5 |
|
|
#endif |
6 |
|
|
|
7 |
|
|
/* |
8 |
|
|
* lookamb.c - program to examine ambient components. |
9 |
|
|
* |
10 |
|
|
* 10/8/86 |
11 |
|
|
*/ |
12 |
|
|
|
13 |
|
|
#include <stdio.h> |
14 |
|
|
|
15 |
|
|
#include "color.h" |
16 |
|
|
|
17 |
|
|
|
18 |
|
|
typedef struct ambval { |
19 |
greg |
1.3 |
float pos[3]; /* position in space */ |
20 |
|
|
float dir[3]; /* normal direction */ |
21 |
greg |
1.1 |
int lvl; /* recursion level of parent ray */ |
22 |
|
|
float weight; /* weight of parent ray */ |
23 |
|
|
COLOR val; /* computed ambient value */ |
24 |
|
|
float rad; /* validity radius */ |
25 |
|
|
struct ambval *next; /* next in list */ |
26 |
|
|
} AMBVAL; /* ambient value */ |
27 |
|
|
|
28 |
|
|
int dataonly = 0; |
29 |
|
|
|
30 |
|
|
int reverse = 0; |
31 |
|
|
|
32 |
|
|
AMBVAL av; |
33 |
|
|
|
34 |
|
|
|
35 |
|
|
main(argc, argv) /* load ambient values from a file */ |
36 |
|
|
char *argv[]; |
37 |
|
|
{ |
38 |
|
|
FILE *fp; |
39 |
|
|
int i; |
40 |
|
|
|
41 |
|
|
for (i = 1; i < argc; i++) |
42 |
|
|
if (argv[i][0] == '-') |
43 |
|
|
switch (argv[i][1]) { |
44 |
|
|
case 'd': |
45 |
|
|
dataonly = 1; |
46 |
|
|
break; |
47 |
|
|
case 'r': |
48 |
|
|
reverse = 1; |
49 |
|
|
break; |
50 |
|
|
default: |
51 |
|
|
fprintf(stderr, "%s: unknown option '%s'\n", |
52 |
|
|
argv[0], argv[i]); |
53 |
|
|
return(1); |
54 |
|
|
} |
55 |
|
|
else |
56 |
|
|
break; |
57 |
|
|
|
58 |
|
|
if (i >= argc) |
59 |
|
|
fp = stdin; |
60 |
|
|
else if ((fp = fopen(argv[i], "r")) == NULL) { |
61 |
|
|
fprintf(stderr, "%s: file not found\n", argv[i]); |
62 |
|
|
return(1); |
63 |
|
|
} |
64 |
|
|
if (reverse) |
65 |
|
|
writamb(fp); |
66 |
|
|
else |
67 |
|
|
lookamb(fp); |
68 |
|
|
fclose(fp); |
69 |
|
|
return(0); |
70 |
|
|
} |
71 |
|
|
|
72 |
|
|
|
73 |
|
|
lookamb(fp) /* get ambient values from a file */ |
74 |
|
|
FILE *fp; |
75 |
|
|
{ |
76 |
greg |
1.2 |
while (fread((char *)&av, sizeof(AMBVAL), 1, fp) == 1) { |
77 |
greg |
1.1 |
if (dataonly) { |
78 |
|
|
printf("%f\t%f\t%f\t", av.pos[0], av.pos[1], av.pos[2]); |
79 |
|
|
printf("%f\t%f\t%f\t", av.dir[0], av.dir[1], av.dir[2]); |
80 |
|
|
printf("%d\t%f\t%f\t", av.lvl, av.weight, av.rad); |
81 |
|
|
printf("%e\t%e\t%e\n", colval(av.val,RED), |
82 |
|
|
colval(av.val,GRN), |
83 |
|
|
colval(av.val,BLU)); |
84 |
|
|
} else { |
85 |
|
|
printf("\nPosition:\t%f\t%f\t%f\n", av.pos[0], |
86 |
|
|
av.pos[1], av.pos[2]); |
87 |
|
|
printf("Direction:\t%f\t%f\t%f\n", av.dir[0], |
88 |
|
|
av.dir[1], av.dir[2]); |
89 |
|
|
printf("Lvl,Wt,Rad:\t%d\t\t%f\t%f\n", av.lvl, |
90 |
|
|
av.weight, av.rad); |
91 |
|
|
printf("Value:\t\t%e\t%e\t%e\n", colval(av.val,RED), |
92 |
|
|
colval(av.val,GRN), colval(av.val,BLU)); |
93 |
|
|
} |
94 |
|
|
if (ferror(stdout)) |
95 |
|
|
exit(1); |
96 |
|
|
} |
97 |
|
|
} |
98 |
|
|
|
99 |
|
|
|
100 |
|
|
writamb(fp) /* write binary ambient values */ |
101 |
|
|
FILE *fp; |
102 |
|
|
{ |
103 |
|
|
for ( ; ; ) { |
104 |
|
|
if (!dataonly) |
105 |
|
|
fscanf(fp, "%*s"); |
106 |
greg |
1.3 |
if (fscanf(fp, "%f %f %f", |
107 |
greg |
1.1 |
&av.pos[0], &av.pos[1], &av.pos[2]) != 3) |
108 |
|
|
return; |
109 |
|
|
if (!dataonly) |
110 |
|
|
fscanf(fp, "%*s"); |
111 |
greg |
1.3 |
if (fscanf(fp, "%f %f %f", |
112 |
greg |
1.1 |
&av.dir[0], &av.dir[1], &av.dir[2]) != 3) |
113 |
|
|
return; |
114 |
|
|
if (!dataonly) |
115 |
|
|
fscanf(fp, "%*s"); |
116 |
|
|
if (fscanf(fp, "%d %f %f", |
117 |
|
|
&av.lvl, &av.weight, &av.rad) != 3) |
118 |
|
|
return; |
119 |
|
|
if (!dataonly) |
120 |
|
|
fscanf(fp, "%*s"); |
121 |
|
|
if (fscanf(fp, "%f %f %f", |
122 |
|
|
&av.val[RED], &av.val[GRN], &av.val[BLU]) != 3) |
123 |
|
|
return; |
124 |
greg |
1.2 |
fwrite((char *)&av, sizeof(AMBVAL), 1, stdout); |
125 |
greg |
1.1 |
if (ferror(stdout)) |
126 |
|
|
exit(1); |
127 |
|
|
} |
128 |
|
|
} |