| 1 |
– |
/* Copyright (c) 1992 Regents of the University of California */ |
| 2 |
– |
|
| 1 |
|
#ifndef lint |
| 2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
| 2 |
> |
static const char RCSid[] = "$Id$"; |
| 3 |
|
#endif |
| 6 |
– |
|
| 4 |
|
/* |
| 5 |
|
* Read and write portable ambient values |
| 6 |
+ |
* |
| 7 |
+ |
* Declarations of external symbols in ambient.h |
| 8 |
|
*/ |
| 9 |
|
|
| 10 |
< |
#include <stdio.h> |
| 10 |
> |
#include "copyright.h" |
| 11 |
|
|
| 12 |
< |
#include "color.h" |
| 14 |
< |
|
| 12 |
> |
#include "ray.h" |
| 13 |
|
#include "ambient.h" |
| 14 |
|
|
| 15 |
|
|
| 16 |
< |
#define putvec(v,fp) putflt((v)[0],fp);putflt((v)[1],fp);putflt((v)[2],fp) |
| 16 |
> |
int *AMB_CNDX = CNDX; /* open ambient file RGBE indices */ |
| 17 |
> |
float *AMB_WLPART = WLPART; /* open ambient file limits+partitions (nm) */ |
| 18 |
|
|
| 20 |
– |
#define getvec(v,fp) (v)[0]=getflt(fp);(v)[1]=getflt(fp);(v)[2]=getflt(fp) |
| 19 |
|
|
| 20 |
+ |
#define badflt(x) (((x) < -FHUGE) | ((x) > FHUGE)) |
| 21 |
|
|
| 22 |
< |
extern double getflt(); |
| 24 |
< |
extern long getint(); |
| 22 |
> |
#define badvec(v) (badflt((v)[0]) | badflt((v)[1]) | badflt((v)[2])) |
| 23 |
|
|
| 24 |
|
|
| 25 |
< |
writambval(av, fp) /* write ambient value to stream */ |
| 26 |
< |
register AMBVAL *av; |
| 25 |
> |
int |
| 26 |
> |
amb_headline( /* check ambient headline (copy to file if *p) */ |
| 27 |
> |
char *hl, |
| 28 |
> |
void *p |
| 29 |
> |
) |
| 30 |
> |
{ |
| 31 |
> |
static int ambcndx[4]; |
| 32 |
> |
static float ambwlpart[4]; |
| 33 |
> |
FILE *fout = (FILE *)p; |
| 34 |
> |
char fmt[MAXFMTLEN]; |
| 35 |
> |
|
| 36 |
> |
if (formatval(fmt, hl)) { |
| 37 |
> |
if (strcmp(fmt, AMBFMT)) |
| 38 |
> |
return(-1); |
| 39 |
> |
return(0); |
| 40 |
> |
} |
| 41 |
> |
if (isncomp(hl)) { |
| 42 |
> |
ambcndx[3] = ncompval(hl); |
| 43 |
> |
if ((ambcndx[3] < 3) | (ambcndx[3] > MAXCSAMP)) |
| 44 |
> |
return(-1); |
| 45 |
> |
AMB_CNDX = ambcndx; |
| 46 |
> |
return(1); |
| 47 |
> |
} |
| 48 |
> |
if (iswlsplit(hl)) { |
| 49 |
> |
if (!wlsplitval(ambwlpart, hl)) |
| 50 |
> |
return(-1); |
| 51 |
> |
AMB_WLPART = ambwlpart; |
| 52 |
> |
return(1); |
| 53 |
> |
} |
| 54 |
> |
if (fout) |
| 55 |
> |
fputs(hl, fout); |
| 56 |
> |
return(0); |
| 57 |
> |
} |
| 58 |
> |
|
| 59 |
> |
|
| 60 |
> |
void |
| 61 |
> |
putambmagic(fp) /* write out ambient value magic number */ |
| 62 |
|
FILE *fp; |
| 63 |
|
{ |
| 64 |
< |
COLR col; |
| 64 |
> |
putint(AMBMAGIC, 2, fp); |
| 65 |
> |
} |
| 66 |
|
|
| 67 |
< |
putint((long)av->lvl, 1, fp); |
| 67 |
> |
|
| 68 |
> |
int |
| 69 |
> |
hasambmagic(fp) /* read in and check validity of magic # */ |
| 70 |
> |
FILE *fp; |
| 71 |
> |
{ |
| 72 |
> |
int magic; |
| 73 |
> |
|
| 74 |
> |
magic = getint(2, fp); |
| 75 |
> |
if (feof(fp)) |
| 76 |
> |
return(0); |
| 77 |
> |
return(magic == AMBMAGIC); |
| 78 |
> |
} |
| 79 |
> |
|
| 80 |
> |
|
| 81 |
> |
#define putpos(v,fp) putflt((v)[0],fp);putflt((v)[1],fp);putflt((v)[2],fp) |
| 82 |
> |
|
| 83 |
> |
#define getpos(v,fp) (v)[0]=getflt(fp);(v)[1]=getflt(fp);(v)[2]=getflt(fp) |
| 84 |
> |
|
| 85 |
> |
#define putv2(v2,fp) putflt((v2)[0],fp);putflt((v2)[1],fp) |
| 86 |
> |
|
| 87 |
> |
#define getv2(v2,fp) (v2)[0]=getflt(fp);(v2)[1]=getflt(fp) |
| 88 |
> |
|
| 89 |
> |
int |
| 90 |
> |
writambval( /* write ambient value to stream */ |
| 91 |
> |
AMBVAL *av, |
| 92 |
> |
FILE *fp |
| 93 |
> |
) |
| 94 |
> |
{ |
| 95 |
> |
SCOLR sclr; |
| 96 |
> |
|
| 97 |
> |
putint(av->lvl, 1, fp); |
| 98 |
|
putflt(av->weight, fp); |
| 99 |
< |
putvec(av->pos, fp); |
| 100 |
< |
putvec(av->dir, fp); |
| 101 |
< |
setcolr(col, colval(av->val,RED), |
| 102 |
< |
colval(av->val,GRN), colval(av->val,BLU)); |
| 103 |
< |
fwrite((char *)col, sizeof(col), 1, fp); |
| 104 |
< |
putflt(av->rad, fp); |
| 105 |
< |
putvec(av->gpos, fp); |
| 106 |
< |
putvec(av->gdir, fp); |
| 99 |
> |
putpos(av->pos, fp); |
| 100 |
> |
putint(av->ndir, sizeof(av->ndir), fp); |
| 101 |
> |
putint(av->udir, sizeof(av->udir), fp); |
| 102 |
> |
putv2(av->rad, fp); |
| 103 |
> |
putv2(av->gpos, fp); |
| 104 |
> |
putv2(av->gdir, fp); |
| 105 |
> |
putint(av->corral, sizeof(av->corral), fp); |
| 106 |
> |
if ((AMB_CNDX == CNDX) & (AMB_WLPART == WLPART)) { |
| 107 |
> |
scolor_scolr(sclr, av->val); |
| 108 |
> |
} else { |
| 109 |
> |
SCOLOR scol; |
| 110 |
> |
convertscolor(scol, AMB_CNDX[3], AMB_WLPART[0], AMB_WLPART[3], |
| 111 |
> |
av->val, NCSAMP, WLPART[0], WLPART[3]); |
| 112 |
> |
scolor2scolr(sclr, scol, AMB_CNDX[3]); |
| 113 |
> |
} |
| 114 |
> |
putbinary(sclr, AMB_CNDX[3]+1, 1, fp); |
| 115 |
> |
|
| 116 |
|
return(ferror(fp) ? -1 : 0); |
| 117 |
|
} |
| 118 |
|
|
| 119 |
|
|
| 120 |
< |
readambval(av, fp) /* read ambient value from stream */ |
| 121 |
< |
register AMBVAL *av; |
| 122 |
< |
FILE *fp; |
| 120 |
> |
int |
| 121 |
> |
ambvalOK( /* check consistency of ambient value */ |
| 122 |
> |
AMBVAL *av |
| 123 |
> |
) |
| 124 |
|
{ |
| 125 |
< |
COLR col; |
| 125 |
> |
int i; |
| 126 |
|
|
| 127 |
< |
av->lvl = getint(1, fp); |
| 127 |
> |
if (badvec(av->pos)) return(0); |
| 128 |
> |
if (!av->ndir | !av->udir) return(0); |
| 129 |
> |
if ((av->weight <= 0.) | (av->weight > 1.)) return(0); |
| 130 |
> |
if ((av->rad[0] <= 0.) | (av->rad[0] >= FHUGE)) return(0); |
| 131 |
> |
if ((av->rad[1] <= 0.) | (av->rad[1] >= FHUGE)) return(0); |
| 132 |
> |
if (av->rad[0] > av->rad[1]+FTINY) return(0); |
| 133 |
> |
if (badflt(av->gpos[0]) | badflt(av->gpos[1])) return(0); |
| 134 |
> |
if (badflt(av->gdir[0]) | badflt(av->gdir[1])) return(0); |
| 135 |
> |
for (i = AMB_CNDX[3]; i-- > 0; ) |
| 136 |
> |
if ((av->val[i] < 0.) | (av->val[i] >= FHUGE)) |
| 137 |
> |
return(0); |
| 138 |
> |
return(1); |
| 139 |
> |
} |
| 140 |
> |
|
| 141 |
> |
|
| 142 |
> |
int |
| 143 |
> |
readambval( /* read ambient value from stream */ |
| 144 |
> |
AMBVAL *av, |
| 145 |
> |
FILE *fp |
| 146 |
> |
) |
| 147 |
> |
{ |
| 148 |
> |
SCOLR sclr; |
| 149 |
> |
|
| 150 |
> |
av->lvl = getint(1, fp) & 0xff; |
| 151 |
|
if (feof(fp)) |
| 152 |
|
return(0); |
| 153 |
|
av->weight = getflt(fp); |
| 154 |
< |
getvec(av->pos, fp); |
| 155 |
< |
getvec(av->dir, fp); |
| 156 |
< |
if (fread((char *)col, sizeof(col), 1, fp) != 1) |
| 154 |
> |
getpos(av->pos, fp); |
| 155 |
> |
av->ndir = getint(sizeof(av->ndir), fp); |
| 156 |
> |
av->udir = getint(sizeof(av->udir), fp); |
| 157 |
> |
getv2(av->rad, fp); |
| 158 |
> |
getv2(av->gpos, fp); |
| 159 |
> |
getv2(av->gdir, fp); |
| 160 |
> |
av->corral = (uint32)getint(sizeof(av->corral), fp); |
| 161 |
> |
if (getbinary(sclr, AMB_CNDX[3]+1, 1, fp) != 1) |
| 162 |
|
return(0); |
| 163 |
< |
colr_color(av->val, col); |
| 164 |
< |
av->rad = getflt(fp); |
| 165 |
< |
getvec(av->gpos, fp); |
| 166 |
< |
getvec(av->gdir, fp); |
| 167 |
< |
return(feof(fp) ? 0 : 1); |
| 163 |
> |
if ((AMB_CNDX == CNDX) & (AMB_WLPART == WLPART)) { |
| 164 |
> |
scolr_scolor(av->val, sclr); |
| 165 |
> |
} else { |
| 166 |
> |
SCOLOR scol; |
| 167 |
> |
scolr2scolor(scol, sclr, AMB_CNDX[3]); |
| 168 |
> |
convertscolor(av->val, NCSAMP, WLPART[0], WLPART[3], |
| 169 |
> |
scol, AMB_CNDX[3], AMB_WLPART[0], AMB_WLPART[3]); |
| 170 |
> |
} |
| 171 |
> |
return(feof(fp) ? 0 : ambvalOK(av)); |
| 172 |
|
} |
