12 |
|
|
13 |
|
#include "color.h" |
14 |
|
|
15 |
+ |
#include "fvect.h" |
16 |
+ |
|
17 |
|
#include "ambient.h" |
18 |
|
|
19 |
|
|
21 |
|
|
22 |
|
#define getvec(v,fp) (v)[0]=getflt(fp);(v)[1]=getflt(fp);(v)[2]=getflt(fp) |
23 |
|
|
24 |
+ |
#define badflt(x) ((x) < -FHUGE || (x) > FHUGE) |
25 |
|
|
26 |
+ |
#define badvec(v) (badflt((v)[0]) || badflt((v)[1]) || badflt((v)[2])) |
27 |
+ |
|
28 |
+ |
|
29 |
|
extern double getflt(); |
30 |
|
extern long getint(); |
31 |
|
|
69 |
|
} |
70 |
|
|
71 |
|
|
72 |
+ |
int |
73 |
+ |
ambvalOK(av) /* check consistency of ambient value */ |
74 |
+ |
register AMBVAL *av; |
75 |
+ |
{ |
76 |
+ |
double d; |
77 |
+ |
|
78 |
+ |
if (badvec(av->pos)) return(0); |
79 |
+ |
if (badvec(av->dir)) return(0); |
80 |
+ |
d = DOT(av->dir,av->dir); |
81 |
+ |
if (d < 0.9999 || d > 1.0001) return(0); |
82 |
+ |
if (av->lvl < 0 || av->lvl > 100) return(0); |
83 |
+ |
if (av->weight <= 0. || av->weight > 1.) return(0); |
84 |
+ |
if (av->rad <= 0. || av->rad >= FHUGE) return(0); |
85 |
+ |
if (colval(av->val,RED) < 0. || |
86 |
+ |
colval(av->val,RED) > FHUGE || |
87 |
+ |
colval(av->val,GRN) < 0. || |
88 |
+ |
colval(av->val,GRN) > FHUGE || |
89 |
+ |
colval(av->val,BLU) < 0. || |
90 |
+ |
colval(av->val,BLU) > FHUGE) return(0); |
91 |
+ |
if (badvec(av->gpos)) return(0); |
92 |
+ |
if (badvec(av->gdir)) return(0); |
93 |
+ |
return(1); |
94 |
+ |
} |
95 |
+ |
|
96 |
+ |
|
97 |
|
readambval(av, fp) /* read ambient value from stream */ |
98 |
|
register AMBVAL *av; |
99 |
|
FILE *fp; |
112 |
|
av->rad = getflt(fp); |
113 |
|
getvec(av->gpos, fp); |
114 |
|
getvec(av->gdir, fp); |
115 |
< |
return(feof(fp) ? 0 : 1); |
115 |
> |
return(feof(fp) ? 0 : ambvalOK(av)); |
116 |
|
} |