1 |
greg |
2.6 |
/* Copyright (c) 1992 Regents of the University of California */ |
2 |
greg |
1.1 |
|
3 |
|
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#ifndef lint |
4 |
|
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static char SCCSid[] = "$SunId$ LBL"; |
5 |
|
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#endif |
6 |
|
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|
7 |
|
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/* |
8 |
|
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* Combine picture files according to calcomp functions. |
9 |
|
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* |
10 |
|
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* 1/4/89 |
11 |
|
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*/ |
12 |
|
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|
13 |
greg |
2.10 |
#include "standard.h" |
14 |
greg |
1.1 |
|
15 |
|
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#include "color.h" |
16 |
|
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|
17 |
greg |
2.8 |
#include "resolu.h" |
18 |
greg |
1.23 |
|
19 |
greg |
1.1 |
#include "calcomp.h" |
20 |
|
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|
21 |
greg |
2.10 |
#include "view.h" |
22 |
|
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|
23 |
greg |
1.6 |
#define MAXINP 32 /* maximum number of input files */ |
24 |
greg |
2.13 |
#define WINSIZ 17 /* scanline window size */ |
25 |
|
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#define MIDSCN ((WINSIZ-1)/2+1) |
26 |
greg |
1.1 |
|
27 |
|
|
struct { |
28 |
greg |
1.19 |
char *name; /* file or command name */ |
29 |
greg |
1.1 |
FILE *fp; /* stream pointer */ |
30 |
greg |
2.10 |
VIEW vw; /* view for picture */ |
31 |
|
|
RESOLU rs; /* image resolution and orientation */ |
32 |
greg |
1.14 |
COLOR *scan[WINSIZ]; /* input scanline window */ |
33 |
greg |
1.3 |
COLOR coef; /* coefficient */ |
34 |
greg |
1.17 |
COLOR expos; /* recorded exposure */ |
35 |
greg |
1.1 |
} input[MAXINP]; /* input pictures */ |
36 |
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|
37 |
|
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int nfiles; /* number of input files */ |
38 |
|
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|
39 |
greg |
2.6 |
char Command[] = "<Command>"; |
40 |
greg |
1.21 |
char vcolin[3][4] = {"ri", "gi", "bi"}; |
41 |
|
|
char vcolout[3][4] = {"ro", "go", "bo"}; |
42 |
greg |
1.15 |
char vbrtin[] = "li"; |
43 |
|
|
char vbrtout[] = "lo"; |
44 |
greg |
1.21 |
char vcolexp[3][4] = {"re", "ge", "be"}; |
45 |
greg |
1.17 |
char vbrtexp[] = "le"; |
46 |
greg |
1.1 |
|
47 |
greg |
2.10 |
char vray[6][4] = {"Ox", "Oy", "Oz", "Dx", "Dy", "Dz"}; |
48 |
|
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|
49 |
greg |
1.18 |
char vnfiles[] = "nfiles"; |
50 |
|
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char vxmax[] = "xmax"; |
51 |
|
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char vymax[] = "ymax"; |
52 |
|
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char vxres[] = "xres"; |
53 |
|
|
char vyres[] = "yres"; |
54 |
|
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char vxpos[] = "x"; |
55 |
|
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char vypos[] = "y"; |
56 |
greg |
1.1 |
|
57 |
|
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int nowarn = 0; /* no warning messages? */ |
58 |
|
|
|
59 |
greg |
1.18 |
int xmax = 0, ymax = 0; /* input resolution */ |
60 |
greg |
1.9 |
|
61 |
greg |
1.18 |
int xscan, yscan; /* input position */ |
62 |
greg |
1.1 |
|
63 |
greg |
1.18 |
int xres, yres; /* output resolution */ |
64 |
greg |
1.1 |
|
65 |
greg |
1.18 |
int xpos, ypos; /* output position */ |
66 |
|
|
|
67 |
greg |
2.10 |
char *progname; /* global argv[0] */ |
68 |
|
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|
69 |
greg |
1.10 |
int wrongformat = 0; |
70 |
greg |
2.10 |
int gotview; |
71 |
greg |
1.1 |
|
72 |
greg |
1.19 |
FILE *popen(); |
73 |
greg |
1.10 |
|
74 |
greg |
2.7 |
extern char *emalloc(); |
75 |
greg |
1.19 |
|
76 |
greg |
2.7 |
|
77 |
greg |
1.1 |
main(argc, argv) |
78 |
|
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int argc; |
79 |
|
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char *argv[]; |
80 |
|
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{ |
81 |
greg |
1.18 |
int original; |
82 |
greg |
1.3 |
double f; |
83 |
greg |
1.14 |
int a, i; |
84 |
greg |
2.7 |
#ifdef MSDOS |
85 |
|
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extern int _fmode; |
86 |
|
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_fmode = O_BINARY; |
87 |
|
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setmode(fileno(stdin), O_BINARY); |
88 |
|
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setmode(fileno(stdout), O_BINARY); |
89 |
|
|
#endif |
90 |
greg |
2.10 |
progname = argv[0]; |
91 |
greg |
1.15 |
/* scan options */ |
92 |
|
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for (a = 1; a < argc; a++) { |
93 |
greg |
1.1 |
if (argv[a][0] == '-') |
94 |
|
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switch (argv[a][1]) { |
95 |
|
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case 'x': |
96 |
|
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case 'y': |
97 |
greg |
1.18 |
a++; |
98 |
greg |
1.15 |
continue; |
99 |
greg |
1.1 |
case 'w': |
100 |
|
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nowarn = !nowarn; |
101 |
greg |
1.15 |
continue; |
102 |
greg |
1.1 |
case 'f': |
103 |
|
|
case 'e': |
104 |
greg |
1.16 |
a++; |
105 |
greg |
1.15 |
continue; |
106 |
greg |
1.1 |
} |
107 |
greg |
1.15 |
break; |
108 |
|
|
} |
109 |
greg |
2.14 |
newheader("RADIANCE", stdout); /* start header */ |
110 |
greg |
1.15 |
/* process files */ |
111 |
greg |
1.17 |
for (nfiles = 0; nfiles < MAXINP; nfiles++) { |
112 |
greg |
1.3 |
setcolor(input[nfiles].coef, 1.0, 1.0, 1.0); |
113 |
greg |
1.17 |
setcolor(input[nfiles].expos, 1.0, 1.0, 1.0); |
114 |
greg |
2.10 |
copystruct(&input[nfiles].vw, &stdview); |
115 |
greg |
1.17 |
} |
116 |
greg |
1.1 |
nfiles = 0; |
117 |
greg |
1.18 |
original = 0; |
118 |
greg |
1.1 |
for ( ; a < argc; a++) { |
119 |
|
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if (nfiles >= MAXINP) { |
120 |
|
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eputs(argv[0]); |
121 |
|
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eputs(": too many picture files\n"); |
122 |
|
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quit(1); |
123 |
|
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} |
124 |
greg |
1.3 |
if (argv[a][0] == '-') |
125 |
|
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switch (argv[a][1]) { |
126 |
|
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case '\0': |
127 |
|
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input[nfiles].name = "<stdin>"; |
128 |
|
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input[nfiles].fp = stdin; |
129 |
|
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break; |
130 |
greg |
1.17 |
case 'o': |
131 |
|
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original++; |
132 |
greg |
1.22 |
continue; |
133 |
greg |
1.3 |
case 's': |
134 |
|
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f = atof(argv[++a]); |
135 |
|
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scalecolor(input[nfiles].coef, f); |
136 |
|
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continue; |
137 |
|
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case 'c': |
138 |
|
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colval(input[nfiles].coef,RED)*=atof(argv[++a]); |
139 |
|
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colval(input[nfiles].coef,GRN)*=atof(argv[++a]); |
140 |
|
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colval(input[nfiles].coef,BLU)*=atof(argv[++a]); |
141 |
|
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continue; |
142 |
|
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default: |
143 |
|
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goto usage; |
144 |
|
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} |
145 |
|
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else { |
146 |
greg |
2.2 |
if (argv[a][0] == '!') { |
147 |
greg |
2.6 |
input[nfiles].name = Command; |
148 |
greg |
2.2 |
input[nfiles].fp = popen(argv[a]+1, "r"); |
149 |
|
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} else { |
150 |
|
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input[nfiles].name = argv[a]; |
151 |
|
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input[nfiles].fp = fopen(argv[a], "r"); |
152 |
|
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} |
153 |
greg |
1.1 |
if (input[nfiles].fp == NULL) { |
154 |
greg |
1.6 |
perror(argv[a]); |
155 |
greg |
1.1 |
quit(1); |
156 |
|
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} |
157 |
|
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} |
158 |
greg |
1.16 |
checkfile(); |
159 |
greg |
1.18 |
if (original) { |
160 |
|
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colval(input[nfiles].coef,RED) /= |
161 |
|
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colval(input[nfiles].expos,RED); |
162 |
|
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colval(input[nfiles].coef,GRN) /= |
163 |
|
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colval(input[nfiles].expos,GRN); |
164 |
|
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colval(input[nfiles].coef,BLU) /= |
165 |
|
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colval(input[nfiles].expos,BLU); |
166 |
|
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} |
167 |
|
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nfiles++; |
168 |
greg |
1.17 |
original = 0; |
169 |
greg |
1.15 |
} |
170 |
greg |
1.18 |
init(); /* set constants */ |
171 |
greg |
1.15 |
/* go back and get expressions */ |
172 |
|
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for (a = 1; a < argc; a++) { |
173 |
|
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if (argv[a][0] == '-') |
174 |
|
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switch (argv[a][1]) { |
175 |
|
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case 'x': |
176 |
greg |
1.21 |
varset(vxres, ':', eval(argv[++a])); |
177 |
greg |
1.18 |
continue; |
178 |
greg |
1.15 |
case 'y': |
179 |
greg |
1.21 |
varset(vyres, ':', eval(argv[++a])); |
180 |
greg |
1.16 |
continue; |
181 |
greg |
1.15 |
case 'w': |
182 |
|
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continue; |
183 |
|
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case 'f': |
184 |
|
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fcompile(argv[++a]); |
185 |
|
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continue; |
186 |
|
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case 'e': |
187 |
|
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scompile(argv[++a], NULL, 0); |
188 |
|
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continue; |
189 |
|
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} |
190 |
|
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break; |
191 |
|
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} |
192 |
greg |
1.18 |
/* set/get output resolution */ |
193 |
|
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if (!vardefined(vxres)) |
194 |
|
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varset(vxres, ':', (double)xmax); |
195 |
|
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if (!vardefined(vyres)) |
196 |
|
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varset(vyres, ':', (double)ymax); |
197 |
|
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xres = varvalue(vxres) + .5; |
198 |
|
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yres = varvalue(vyres) + .5; |
199 |
|
|
if (xres <= 0 || yres <= 0) { |
200 |
|
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eputs(argv[0]); |
201 |
|
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eputs(": illegal output resolution\n"); |
202 |
|
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quit(1); |
203 |
|
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} |
204 |
greg |
1.15 |
/* complete header */ |
205 |
|
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printargs(argc, argv, stdout); |
206 |
|
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fputformat(COLRFMT, stdout); |
207 |
|
|
putchar('\n'); |
208 |
greg |
1.23 |
fprtresolu(xres, yres, stdout); |
209 |
greg |
1.15 |
/* combine pictures */ |
210 |
|
|
combine(); |
211 |
|
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quit(0); |
212 |
|
|
usage: |
213 |
|
|
eputs("Usage: "); |
214 |
|
|
eputs(argv[0]); |
215 |
|
|
eputs( |
216 |
greg |
2.9 |
" [-w][-x xr][-y yr][-e expr][-f file] [ [-o][-s f][-c r g b] pic ..]\n"); |
217 |
greg |
1.15 |
quit(1); |
218 |
|
|
} |
219 |
|
|
|
220 |
|
|
|
221 |
|
|
tputs(s) /* put out string preceded by a tab */ |
222 |
|
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char *s; |
223 |
|
|
{ |
224 |
|
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char fmt[32]; |
225 |
|
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double d; |
226 |
|
|
COLOR ctmp; |
227 |
|
|
|
228 |
greg |
2.14 |
if (isheadid(s)) /* header id */ |
229 |
|
|
return; /* don't echo */ |
230 |
|
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if (formatval(fmt, s)) { /* check format */ |
231 |
greg |
1.15 |
wrongformat = strcmp(fmt, COLRFMT); |
232 |
greg |
1.17 |
return; /* don't echo */ |
233 |
|
|
} |
234 |
|
|
if (isexpos(s)) { /* exposure */ |
235 |
|
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d = exposval(s); |
236 |
|
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scalecolor(input[nfiles].expos, d); |
237 |
|
|
} else if (iscolcor(s)) { /* color correction */ |
238 |
greg |
1.15 |
colcorval(ctmp, s); |
239 |
greg |
1.17 |
multcolor(input[nfiles].expos, ctmp); |
240 |
greg |
2.10 |
} else if (isview(s) && sscanview(&input[nfiles].vw, s) > 0) |
241 |
|
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gotview++; |
242 |
greg |
1.17 |
/* echo line */ |
243 |
|
|
putchar('\t'); |
244 |
|
|
fputs(s, stdout); |
245 |
greg |
1.16 |
} |
246 |
greg |
1.15 |
|
247 |
greg |
1.16 |
|
248 |
|
|
checkfile() /* ready a file */ |
249 |
|
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{ |
250 |
|
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register int i; |
251 |
|
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/* process header */ |
252 |
greg |
2.10 |
gotview = 0; |
253 |
greg |
1.16 |
fputs(input[nfiles].name, stdout); |
254 |
|
|
fputs(":\n", stdout); |
255 |
|
|
getheader(input[nfiles].fp, tputs, NULL); |
256 |
|
|
if (wrongformat) { |
257 |
|
|
eputs(input[nfiles].name); |
258 |
|
|
eputs(": not in Radiance picture format\n"); |
259 |
|
|
quit(1); |
260 |
|
|
} |
261 |
greg |
2.10 |
if (!gotview || setview(&input[nfiles].vw) != NULL) |
262 |
|
|
input[nfiles].vw.type = 0; |
263 |
|
|
if (!fgetsresolu(&input[nfiles].rs, input[nfiles].fp)) { |
264 |
greg |
1.16 |
eputs(input[nfiles].name); |
265 |
|
|
eputs(": bad picture size\n"); |
266 |
|
|
quit(1); |
267 |
|
|
} |
268 |
greg |
1.18 |
if (xmax == 0 && ymax == 0) { |
269 |
greg |
2.10 |
xmax = scanlen(&input[nfiles].rs); |
270 |
|
|
ymax = numscans(&input[nfiles].rs); |
271 |
|
|
} else if (scanlen(&input[nfiles].rs) != xmax || |
272 |
|
|
numscans(&input[nfiles].rs) != ymax) { |
273 |
greg |
1.16 |
eputs(input[nfiles].name); |
274 |
|
|
eputs(": resolution mismatch\n"); |
275 |
|
|
quit(1); |
276 |
|
|
} |
277 |
|
|
/* allocate scanlines */ |
278 |
|
|
for (i = 0; i < WINSIZ; i++) |
279 |
greg |
1.18 |
input[nfiles].scan[i] = (COLOR *)emalloc(xmax*sizeof(COLOR)); |
280 |
greg |
1.15 |
} |
281 |
|
|
|
282 |
|
|
|
283 |
greg |
1.18 |
init() /* perform final setup */ |
284 |
greg |
1.15 |
{ |
285 |
greg |
2.10 |
double l_colin(), l_expos(), l_ray(); |
286 |
greg |
1.16 |
register int i; |
287 |
greg |
1.15 |
/* define constants */ |
288 |
|
|
varset(vnfiles, ':', (double)nfiles); |
289 |
greg |
1.18 |
varset(vxmax, ':', (double)xmax); |
290 |
|
|
varset(vymax, ':', (double)ymax); |
291 |
greg |
1.15 |
/* set functions */ |
292 |
|
|
for (i = 0; i < 3; i++) { |
293 |
greg |
1.17 |
funset(vcolexp[i], 1, ':', l_expos); |
294 |
greg |
1.15 |
funset(vcolin[i], 1, '=', l_colin); |
295 |
|
|
} |
296 |
greg |
1.17 |
funset(vbrtexp, 1, ':', l_expos); |
297 |
greg |
1.15 |
funset(vbrtin, 1, '=', l_colin); |
298 |
greg |
2.10 |
for (i = 0; i < 6; i++) |
299 |
|
|
funset(vray[i], 1, '=', l_ray); |
300 |
greg |
1.1 |
} |
301 |
|
|
|
302 |
|
|
|
303 |
|
|
combine() /* combine pictures */ |
304 |
|
|
{ |
305 |
greg |
1.8 |
EPNODE *coldef[3], *brtdef; |
306 |
greg |
1.1 |
COLOR *scanout; |
307 |
greg |
1.8 |
double d; |
308 |
greg |
1.1 |
register int i, j; |
309 |
|
|
/* check defined variables */ |
310 |
greg |
1.4 |
for (j = 0; j < 3; j++) { |
311 |
|
|
if (vardefined(vcolout[j])) |
312 |
|
|
coldef[j] = eparse(vcolout[j]); |
313 |
|
|
else |
314 |
|
|
coldef[j] = NULL; |
315 |
|
|
} |
316 |
greg |
1.8 |
if (vardefined(vbrtout)) |
317 |
|
|
brtdef = eparse(vbrtout); |
318 |
|
|
else |
319 |
|
|
brtdef = NULL; |
320 |
greg |
1.1 |
/* allocate scanline */ |
321 |
|
|
scanout = (COLOR *)emalloc(xres*sizeof(COLOR)); |
322 |
greg |
1.18 |
/* set input position */ |
323 |
|
|
yscan = ymax+MIDSCN; |
324 |
greg |
1.1 |
/* combine files */ |
325 |
|
|
for (ypos = yres-1; ypos >= 0; ypos--) { |
326 |
greg |
1.14 |
advance(); |
327 |
greg |
1.11 |
varset(vypos, '=', (double)ypos); |
328 |
greg |
1.8 |
for (xpos = 0; xpos < xres; xpos++) { |
329 |
greg |
1.18 |
xscan = (long)xpos*xmax/xres; |
330 |
greg |
1.11 |
varset(vxpos, '=', (double)xpos); |
331 |
greg |
1.8 |
eclock++; |
332 |
|
|
if (brtdef != NULL) { |
333 |
|
|
d = evalue(brtdef); |
334 |
|
|
if (d < 0.0) |
335 |
|
|
d = 0.0; |
336 |
|
|
setcolor(scanout[xpos], d, d, d); |
337 |
|
|
} else { |
338 |
|
|
for (j = 0; j < 3; j++) { |
339 |
|
|
if (coldef[j] != NULL) { |
340 |
greg |
1.13 |
d = evalue(coldef[j]); |
341 |
greg |
1.8 |
} else { |
342 |
greg |
1.13 |
d = 0.0; |
343 |
greg |
1.8 |
for (i = 0; i < nfiles; i++) |
344 |
greg |
1.18 |
d += colval(input[i].scan[MIDSCN][xscan],j); |
345 |
greg |
1.1 |
} |
346 |
greg |
1.13 |
if (d < 0.0) |
347 |
|
|
d = 0.0; |
348 |
|
|
colval(scanout[xpos],j) = d; |
349 |
greg |
1.8 |
} |
350 |
greg |
1.1 |
} |
351 |
greg |
1.8 |
} |
352 |
|
|
if (fwritescan(scanout, xres, stdout) < 0) { |
353 |
|
|
perror("write error"); |
354 |
|
|
quit(1); |
355 |
|
|
} |
356 |
greg |
1.1 |
} |
357 |
|
|
efree(scanout); |
358 |
|
|
} |
359 |
|
|
|
360 |
|
|
|
361 |
greg |
1.18 |
advance() /* read in data for next scanline */ |
362 |
greg |
1.14 |
{ |
363 |
greg |
1.18 |
int ytarget; |
364 |
greg |
1.14 |
register COLOR *st; |
365 |
|
|
register int i, j; |
366 |
|
|
|
367 |
greg |
1.18 |
for (ytarget = (long)ypos*ymax/yres; yscan > ytarget; yscan--) |
368 |
|
|
for (i = 0; i < nfiles; i++) { |
369 |
|
|
st = input[i].scan[WINSIZ-1]; |
370 |
|
|
for (j = WINSIZ-1; j > 0; j--) /* rotate window */ |
371 |
|
|
input[i].scan[j] = input[i].scan[j-1]; |
372 |
|
|
input[i].scan[0] = st; |
373 |
|
|
if (yscan <= MIDSCN) /* hit bottom? */ |
374 |
|
|
continue; |
375 |
greg |
2.4 |
if (freadscan(st, xmax, input[i].fp) < 0) { /* read */ |
376 |
greg |
1.18 |
eputs(input[i].name); |
377 |
|
|
eputs(": read error\n"); |
378 |
|
|
quit(1); |
379 |
|
|
} |
380 |
greg |
2.4 |
if (fabs(colval(input[i].coef,RED)-1.0) > 1e-3 || |
381 |
|
|
fabs(colval(input[i].coef,GRN)-1.0) > 1e-3 || |
382 |
|
|
fabs(colval(input[i].coef,BLU)-1.0) > 1e-3) |
383 |
|
|
for (j = 0; j < xmax; j++) /* adjust color */ |
384 |
|
|
multcolor(st[j], input[i].coef); |
385 |
greg |
1.14 |
} |
386 |
|
|
} |
387 |
|
|
|
388 |
|
|
|
389 |
greg |
1.1 |
double |
390 |
greg |
1.17 |
l_expos(nam) /* return picture exposure */ |
391 |
greg |
1.15 |
register char *nam; |
392 |
greg |
1.1 |
{ |
393 |
greg |
1.15 |
register int fn, n; |
394 |
greg |
1.14 |
|
395 |
greg |
1.18 |
fn = argument(1) - .5; |
396 |
|
|
if (fn < 0 || fn >= nfiles) |
397 |
|
|
return(1.0); |
398 |
greg |
1.17 |
if (nam == vbrtexp) |
399 |
|
|
return(bright(input[fn].expos)); |
400 |
greg |
1.15 |
n = 3; |
401 |
|
|
while (n--) |
402 |
greg |
1.17 |
if (nam == vcolexp[n]) |
403 |
|
|
return(colval(input[fn].expos,n)); |
404 |
|
|
eputs("Bad call to l_expos()!\n"); |
405 |
greg |
1.15 |
quit(1); |
406 |
|
|
} |
407 |
|
|
|
408 |
|
|
|
409 |
|
|
double |
410 |
|
|
l_colin(nam) /* return color value for picture */ |
411 |
|
|
register char *nam; |
412 |
|
|
{ |
413 |
|
|
int fn; |
414 |
|
|
register int n, xoff, yoff; |
415 |
|
|
double d; |
416 |
|
|
|
417 |
greg |
1.16 |
d = argument(1); |
418 |
|
|
if (d > -.5 && d < .5) |
419 |
|
|
return((double)nfiles); |
420 |
|
|
fn = d - .5; |
421 |
|
|
if (fn < 0 || fn >= nfiles) { |
422 |
greg |
1.15 |
errno = EDOM; |
423 |
|
|
return(0.0); |
424 |
|
|
} |
425 |
greg |
1.14 |
xoff = yoff = 0; |
426 |
|
|
n = nargum(); |
427 |
|
|
if (n >= 2) { |
428 |
|
|
d = argument(2); |
429 |
|
|
if (d < 0.0) { |
430 |
|
|
xoff = d-.5; |
431 |
greg |
1.18 |
if (xscan+xoff < 0) |
432 |
|
|
xoff = -xscan; |
433 |
greg |
1.14 |
} else { |
434 |
|
|
xoff = d+.5; |
435 |
greg |
1.18 |
if (xscan+xoff >= xmax) |
436 |
|
|
xoff = xmax-1-xscan; |
437 |
greg |
1.14 |
} |
438 |
|
|
} |
439 |
|
|
if (n >= 3) { |
440 |
|
|
d = argument(3); |
441 |
|
|
if (d < 0.0) { |
442 |
|
|
yoff = d-.5; |
443 |
|
|
if (yoff+MIDSCN < 0) |
444 |
|
|
yoff = -MIDSCN; |
445 |
greg |
1.18 |
if (yscan+yoff < 0) |
446 |
|
|
yoff = -yscan; |
447 |
greg |
1.14 |
} else { |
448 |
|
|
yoff = d+.5; |
449 |
|
|
if (yoff+MIDSCN >= WINSIZ) |
450 |
|
|
yoff = WINSIZ-1-MIDSCN; |
451 |
greg |
1.18 |
if (yscan+yoff >= ymax) |
452 |
|
|
yoff = ymax-1-yscan; |
453 |
greg |
1.14 |
} |
454 |
|
|
} |
455 |
greg |
1.15 |
if (nam == vbrtin) |
456 |
greg |
1.18 |
return(bright(input[fn].scan[MIDSCN+yoff][xscan+xoff])); |
457 |
greg |
1.15 |
n = 3; |
458 |
|
|
while (n--) |
459 |
|
|
if (nam == vcolin[n]) |
460 |
greg |
1.18 |
return(colval(input[fn].scan[MIDSCN+yoff][xscan+xoff],n)); |
461 |
greg |
1.15 |
eputs("Bad call to l_colin()!\n"); |
462 |
greg |
2.10 |
quit(1); |
463 |
|
|
} |
464 |
|
|
|
465 |
|
|
|
466 |
|
|
double |
467 |
|
|
l_ray(nam) /* return ray origin or direction */ |
468 |
|
|
register char *nam; |
469 |
|
|
{ |
470 |
greg |
2.15 |
static unsigned long ltick[MAXINP]; |
471 |
greg |
2.10 |
static FVECT lorg[MAXINP], ldir[MAXINP]; |
472 |
|
|
FLOAT loc[2]; |
473 |
|
|
double d; |
474 |
|
|
int fn; |
475 |
|
|
register int i; |
476 |
|
|
|
477 |
|
|
d = argument(1); |
478 |
|
|
if (d > -.5 && d < .5) |
479 |
|
|
return((double)nfiles); |
480 |
|
|
fn = d - .5; |
481 |
|
|
if (fn < 0 || fn >= nfiles) { |
482 |
|
|
errno = EDOM; |
483 |
|
|
return(0.0); |
484 |
|
|
} |
485 |
|
|
if (ltick[fn] < eclock) { /* need to compute? */ |
486 |
|
|
lorg[fn][0] = lorg[fn][1] = lorg[fn][2] = 0.0; |
487 |
|
|
ldir[fn][0] = ldir[fn][1] = ldir[fn][2] = 0.0; |
488 |
|
|
if (input[fn].vw.type == 0) |
489 |
greg |
2.12 |
errno = EDOM; |
490 |
greg |
2.10 |
else { |
491 |
greg |
2.11 |
pix2loc(loc, &input[fn].rs, xscan, ymax-1-yscan); |
492 |
greg |
2.10 |
if (viewray(lorg[fn], ldir[fn], |
493 |
|
|
&input[fn].vw, loc[0], loc[1]) < 0) |
494 |
|
|
errno = ERANGE; |
495 |
|
|
} |
496 |
|
|
ltick[fn] = eclock; |
497 |
|
|
} |
498 |
|
|
i = 6; |
499 |
|
|
while (i--) |
500 |
|
|
if (nam == vray[i]) |
501 |
|
|
return(i < 3 ? lorg[fn][i] : ldir[fn][i-3]); |
502 |
|
|
eputs("Bad call to l_ray()!\n"); |
503 |
greg |
1.15 |
quit(1); |
504 |
greg |
1.1 |
} |
505 |
|
|
|
506 |
|
|
|
507 |
|
|
wputs(msg) |
508 |
|
|
char *msg; |
509 |
|
|
{ |
510 |
|
|
if (!nowarn) |
511 |
|
|
eputs(msg); |
512 |
|
|
} |
513 |
|
|
|
514 |
|
|
|
515 |
|
|
eputs(msg) |
516 |
|
|
char *msg; |
517 |
|
|
{ |
518 |
|
|
fputs(msg, stderr); |
519 |
|
|
} |
520 |
|
|
|
521 |
|
|
|
522 |
greg |
2.4 |
quit(code) /* exit gracefully */ |
523 |
|
|
int code; |
524 |
|
|
{ |
525 |
greg |
2.5 |
register int i; |
526 |
|
|
/* close input files */ |
527 |
|
|
for (i = 0; i < nfiles; i++) |
528 |
greg |
2.6 |
if (input[i].name == Command) |
529 |
|
|
pclose(input[i].fp); |
530 |
|
|
else |
531 |
|
|
fclose(input[i].fp); |
532 |
greg |
1.1 |
exit(code); |
533 |
|
|
} |