1 |
greg |
1.1 |
#ifndef lint |
2 |
greg |
2.6 |
static const char RCSid[] = "$Id$"; |
3 |
greg |
1.1 |
#endif |
4 |
|
|
/* |
5 |
|
|
* Load lamp data. |
6 |
|
|
*/ |
7 |
|
|
|
8 |
greg |
2.6 |
/* ==================================================================== |
9 |
|
|
* The Radiance Software License, Version 1.0 |
10 |
|
|
* |
11 |
|
|
* Copyright (c) 1990 - 2002 The Regents of the University of California, |
12 |
|
|
* through Lawrence Berkeley National Laboratory. All rights reserved. |
13 |
|
|
* |
14 |
|
|
* Redistribution and use in source and binary forms, with or without |
15 |
|
|
* modification, are permitted provided that the following conditions |
16 |
|
|
* are met: |
17 |
|
|
* |
18 |
|
|
* 1. Redistributions of source code must retain the above copyright |
19 |
|
|
* notice, this list of conditions and the following disclaimer. |
20 |
|
|
* |
21 |
|
|
* 2. Redistributions in binary form must reproduce the above copyright |
22 |
|
|
* notice, this list of conditions and the following disclaimer in |
23 |
|
|
* the documentation and/or other materials provided with the |
24 |
|
|
* distribution. |
25 |
|
|
* |
26 |
|
|
* 3. The end-user documentation included with the redistribution, |
27 |
|
|
* if any, must include the following acknowledgment: |
28 |
|
|
* "This product includes Radiance software |
29 |
|
|
* (http://radsite.lbl.gov/) |
30 |
|
|
* developed by the Lawrence Berkeley National Laboratory |
31 |
|
|
* (http://www.lbl.gov/)." |
32 |
|
|
* Alternately, this acknowledgment may appear in the software itself, |
33 |
|
|
* if and wherever such third-party acknowledgments normally appear. |
34 |
|
|
* |
35 |
|
|
* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
36 |
|
|
* and "The Regents of the University of California" must |
37 |
|
|
* not be used to endorse or promote products derived from this |
38 |
|
|
* software without prior written permission. For written |
39 |
|
|
* permission, please contact [email protected]. |
40 |
|
|
* |
41 |
|
|
* 5. Products derived from this software may not be called "Radiance", |
42 |
|
|
* nor may "Radiance" appear in their name, without prior written |
43 |
|
|
* permission of Lawrence Berkeley National Laboratory. |
44 |
|
|
* |
45 |
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
46 |
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
47 |
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
48 |
|
|
* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
49 |
|
|
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
50 |
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
51 |
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
52 |
|
|
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
53 |
|
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
54 |
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
55 |
|
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
56 |
|
|
* SUCH DAMAGE. |
57 |
|
|
* ==================================================================== |
58 |
|
|
* |
59 |
|
|
* This software consists of voluntary contributions made by many |
60 |
|
|
* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
61 |
|
|
* information on Lawrence Berkeley National Laboratory, please see |
62 |
|
|
* <http://www.lbl.gov/>. |
63 |
|
|
*/ |
64 |
|
|
|
65 |
greg |
1.1 |
#include <stdio.h> |
66 |
greg |
2.6 |
#include <stdlib.h> |
67 |
greg |
1.1 |
#include <ctype.h> |
68 |
greg |
2.5 |
#include "color.h" |
69 |
greg |
1.1 |
|
70 |
greg |
2.6 |
extern char *eindex(), *expsave(); |
71 |
greg |
2.4 |
extern FILE *frlibopen(); |
72 |
greg |
1.1 |
|
73 |
|
|
typedef struct lamp { |
74 |
|
|
char *pattern; /* search pattern */ |
75 |
|
|
float *color; /* pointer to lamp value */ |
76 |
|
|
struct lamp *next; /* next lamp in list */ |
77 |
|
|
} LAMP; /* a lamp entry */ |
78 |
|
|
|
79 |
|
|
static LAMP *lamps = NULL; /* lamp list */ |
80 |
|
|
|
81 |
|
|
|
82 |
|
|
float * |
83 |
|
|
matchlamp(s) /* see if string matches any lamp */ |
84 |
|
|
char *s; |
85 |
|
|
{ |
86 |
|
|
register LAMP *lp; |
87 |
|
|
|
88 |
|
|
for (lp = lamps; lp != NULL; lp = lp->next) { |
89 |
|
|
expset(lp->pattern); |
90 |
|
|
if (eindex(s) != NULL) |
91 |
|
|
return(lp->color); |
92 |
|
|
} |
93 |
|
|
return(NULL); |
94 |
|
|
} |
95 |
|
|
|
96 |
|
|
|
97 |
|
|
loadlamps(file) /* load lamp type file */ |
98 |
|
|
char *file; |
99 |
|
|
{ |
100 |
|
|
LAMP *lastp; |
101 |
|
|
register LAMP *lp; |
102 |
|
|
FILE *fp; |
103 |
|
|
float xyz[3]; |
104 |
|
|
char buf[128], str[128]; |
105 |
|
|
register char *cp1, *cp2; |
106 |
|
|
|
107 |
greg |
2.4 |
if ((fp = frlibopen(file)) == NULL) |
108 |
greg |
1.1 |
return(0); |
109 |
|
|
lastp = NULL; |
110 |
|
|
while (fgets(buf, sizeof(buf), fp) != NULL) { |
111 |
|
|
/* work on a copy of buffer */ |
112 |
|
|
strcpy(str, buf); |
113 |
|
|
/* get pattern for this entry */ |
114 |
|
|
for (cp1 = str; isspace(*cp1); cp1++) |
115 |
|
|
; |
116 |
|
|
if (!*cp1 || *cp1 == '#') |
117 |
|
|
continue; |
118 |
|
|
for (cp2 = cp1+1; *cp2; cp2++) |
119 |
|
|
if (*cp2 == *cp1 && cp2[-1] != '\\') |
120 |
|
|
break; |
121 |
|
|
if (!*cp2) { |
122 |
|
|
cp1 = "unclosed pattern"; |
123 |
|
|
goto fmterr; |
124 |
|
|
} |
125 |
|
|
cp1++; *cp2++ = '\0'; |
126 |
|
|
if (ecompile(cp1, 1, 0) < 0) { |
127 |
|
|
cp1 = "bad regular expression"; |
128 |
|
|
goto fmterr; |
129 |
|
|
} |
130 |
|
|
if ((lp = (LAMP *)malloc(sizeof(LAMP))) == NULL) |
131 |
|
|
goto memerr; |
132 |
|
|
if ((lp->pattern = expsave()) == NULL) |
133 |
|
|
goto memerr; |
134 |
|
|
/* get specification */ |
135 |
|
|
for (cp1 = cp2; isspace(*cp1); cp1++) |
136 |
|
|
; |
137 |
|
|
if (!isdigit(*cp1) && *cp1 != '.' && *cp1 != '(') { |
138 |
|
|
cp1 = "missing lamp specification"; |
139 |
|
|
goto fmterr; |
140 |
|
|
} |
141 |
|
|
if (*cp1 == '(') { /* find alias */ |
142 |
|
|
for (cp2 = ++cp1; *cp2; cp2++) |
143 |
|
|
if (*cp2 == ')' && cp2[-1] != '\\') |
144 |
|
|
break; |
145 |
|
|
*cp2 = '\0'; |
146 |
|
|
if ((lp->color = matchlamp(cp1)) == NULL) { |
147 |
|
|
cp1 = "unmatched alias"; |
148 |
|
|
goto fmterr; |
149 |
|
|
} |
150 |
|
|
} else { /* or read specificaion */ |
151 |
greg |
2.3 |
if ((lp->color=(float *)malloc(6*sizeof(float)))==NULL) |
152 |
greg |
1.1 |
goto memerr; |
153 |
greg |
2.3 |
if (sscanf(cp1, "%f %f %f", &lp->color[3], & |
154 |
|
|
lp->color[4], &lp->color[5]) != 3) { |
155 |
greg |
1.1 |
cp1 = "bad lamp data"; |
156 |
|
|
goto fmterr; |
157 |
|
|
} |
158 |
|
|
/* convert xyY to XYZ */ |
159 |
greg |
2.3 |
xyz[1] = lp->color[5]; |
160 |
|
|
xyz[0] = lp->color[3]/lp->color[4] * xyz[1]; |
161 |
|
|
xyz[2] = xyz[1]*(1./lp->color[4] - 1.) - xyz[0]; |
162 |
greg |
1.1 |
/* XYZ to RGB */ |
163 |
|
|
cie_rgb(lp->color, xyz); |
164 |
|
|
} |
165 |
|
|
if (lastp == NULL) |
166 |
|
|
lamps = lp; |
167 |
|
|
else |
168 |
|
|
lastp->next = lp; |
169 |
|
|
lp->next = NULL; |
170 |
|
|
lastp = lp; |
171 |
|
|
} |
172 |
|
|
fclose(fp); |
173 |
greg |
1.3 |
return(lastp != NULL); |
174 |
greg |
1.1 |
memerr: |
175 |
|
|
fputs("Out of memory in loadlamps\n", stderr); |
176 |
|
|
return(-1); |
177 |
|
|
fmterr: |
178 |
|
|
fputs(buf, stderr); |
179 |
|
|
fprintf(stderr, "%s: %s\n", file, cp1); |
180 |
|
|
return(-1); |
181 |
|
|
} |
182 |
greg |
1.2 |
|
183 |
|
|
|
184 |
|
|
freelamps() /* free our lamps list */ |
185 |
|
|
{ |
186 |
|
|
register LAMP *lp1, *lp2; |
187 |
|
|
|
188 |
greg |
2.2 |
for (lp1 = lamps; lp1 != NULL; lp1 = lp2) { |
189 |
greg |
1.2 |
free(lp1->pattern); |
190 |
|
|
if (lp1->color != NULL) { |
191 |
|
|
for (lp2 = lp1->next; lp2 != NULL; lp2 = lp2->next) |
192 |
|
|
if (lp2->color == lp1->color) |
193 |
|
|
lp2->color = NULL; |
194 |
greg |
2.6 |
free((void *)lp1->color); |
195 |
greg |
1.2 |
} |
196 |
greg |
2.2 |
lp2 = lp1->next; |
197 |
greg |
2.6 |
free((void *)lp1); |
198 |
greg |
1.2 |
} |
199 |
|
|
lamps = NULL; |
200 |
|
|
} |