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root/radiance/ray/src/gen/mkillum3.c
Revision: 2.1
Committed: Tue Nov 12 17:05:08 1991 UTC (32 years, 4 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 1.8: +0 -0 lines
Log Message:
updated revision number for release 2.0

File Contents

# Content
1 /* Copyright (c) 1991 Regents of the University of California */
2
3 #ifndef lint
4 static char SCCSid[] = "$SunId$ LBL";
5 #endif
6
7 /*
8 * Routines to print mkillum objects
9 */
10
11 #include "mkillum.h"
12
13 #define brt(col) (.263*(col)[0]+.655*(col)[1]+.082*(col)[2])
14
15 char DATORD[] = "RGB"; /* data ordering */
16 char DATSUF[] = ".dat"; /* data file suffix */
17 char DSTSUF[] = ".dist"; /* distribution suffix */
18 char FNCFNM[] = "illum.cal"; /* function file name */
19
20
21 printobj(mod, obj) /* print out an object */
22 char *mod;
23 register OBJREC *obj;
24 {
25 register int i;
26
27 printf("\n%s %s %s", mod, ofun[obj->otype].funame, obj->oname);
28 printf("\n%d", obj->oargs.nsargs);
29 for (i = 0; i < obj->oargs.nsargs; i++)
30 printf(" %s", obj->oargs.sarg[i]);
31 #ifdef IARGS
32 printf("\n%d", obj->oargs.niargs);
33 for (i = 0; i < obj->oargs.niargs; i++)
34 printf(" %d", obj->oargs.iarg[i]);
35 #else
36 printf("\n0");
37 #endif
38 printf("\n%d", obj->oargs.nfargs);
39 for (i = 0; i < obj->oargs.nfargs; i++) {
40 if (i%3 == 0)
41 putchar('\n');
42 printf(" %18.12g", obj->oargs.farg[i]);
43 }
44 putchar('\n');
45 }
46
47
48 char *
49 dfname(il, c) /* return data file name */
50 struct illum_args *il;
51 int c;
52 {
53 extern char *getpath(), *strcpy();
54 char fname[MAXSTR];
55 register char *s;
56
57 s = strcpy(fname, il->datafile);
58 s += strlen(s);
59 if (c) *s++ = c;
60 if (il->dfnum > 0) {
61 sprintf(s, "%d", il->dfnum);
62 s += strlen(s);
63 }
64 strcpy(s, DATSUF);
65 return(getpath(fname, NULL, 0));
66 }
67
68
69 FILE *
70 dfopen(il, c) /* open data file */
71 register struct illum_args *il;
72 int c;
73 {
74 char *fn;
75 FILE *fp;
76 /* get a usable file name */
77 for (fn = dfname(il, c);
78 !(il->flags & IL_DATCLB) && access(fn, F_OK) == 0;
79 fn = dfname(il, c))
80 il->dfnum++;
81 /* open it for writing */
82 if ((fp = fopen(fn, "w")) == NULL) {
83 sprintf(errmsg, "cannot open data file \"%s\"", fn);
84 error(SYSTEM, errmsg);
85 }
86 return(fp);
87 }
88
89
90 flatout(il, da, n, m, u, v, w) /* write hemispherical distribution */
91 struct illum_args *il;
92 float *da;
93 int n, m;
94 FVECT u, v, w;
95 {
96 FILE *dfp;
97 int i;
98
99 if (il->flags & IL_COLDST) {
100 printf("\n%s %s %s%s", VOIDID, ofun[PAT_CDATA].funame,
101 il->matname, DSTSUF);
102 printf("\n9 red green blue");
103 for (i = 0; i < 3; i++) {
104 dfp = dfopen(il, DATORD[i]);
105 fprintf(dfp, "2\n%f %f %d\n%f %f %d\n",
106 1.-.5/n, .5/n, n,
107 0., 2.*PI, m+1);
108 colorout(i, da, n, m, 1./il->nsamps/il->col[i], dfp);
109 fclose(dfp);
110 printf(" %s", dfname(il, DATORD[i]));
111 }
112 } else {
113 printf("\n%s %s %s%s", VOIDID, ofun[PAT_BDATA].funame,
114 il->matname, DSTSUF);
115 printf("\n5 noneg");
116 dfp = dfopen(il, 0);
117 fprintf(dfp, "2\n%f %f %d\n%f %f %d\n", 1.-.5/n, .5/n, n,
118 0., 2.*PI, m+1);
119 brightout(da, n, m, 1./il->nsamps/brt(il->col), dfp);
120 fclose(dfp);
121 printf(" %s", dfname(il, 0));
122 }
123 printf("\n\t%s il_alth il_azih", FNCFNM);
124 printf("\n0\n9\n");
125 printf("\t%f\t%f\t%f\n", u[0], u[1], u[2]);
126 printf("\t%f\t%f\t%f\n", v[0], v[1], v[2]);
127 printf("\t%f\t%f\t%f\n", w[0], w[1], w[2]);
128 il->dfnum++;
129 }
130
131
132 roundout(il, da, n, m) /* write spherical distribution */
133 struct illum_args *il;
134 float *da;
135 int n, m;
136 {
137 FILE *dfp;
138 int i;
139
140 if (il->flags & IL_COLDST) {
141 printf("\n%s %s %s%s", VOIDID, ofun[PAT_CDATA].funame,
142 il->matname, DSTSUF);
143 printf("\n9 red green blue");
144 for (i = 0; i < 3; i++) {
145 dfp = dfopen(il, DATORD[i]);
146 fprintf(dfp, "2\n%f %f %d\n%f %f %d\n",
147 1.-1./n, -1.+1./n, n,
148 0., 2.*PI, m+1);
149 colorout(i, da, n, m, 1./il->nsamps/il->col[i], dfp);
150 fclose(dfp);
151 printf(" %s", dfname(il, DATORD[i]));
152 }
153 } else {
154 printf("\n%s %s %s%s", VOIDID, ofun[PAT_BDATA].funame,
155 il->matname, DSTSUF);
156 printf("\n5 noneg");
157 dfp = dfopen(il, 0);
158 fprintf(dfp, "2\n%f %f %d\n%f %f %d\n", 1.-1./n, -1.+1./n, n,
159 0., 2.*PI, m+1);
160 brightout(da, n, m, 1./il->nsamps/brt(il->col), dfp);
161 fclose(dfp);
162 printf(" %s", dfname(il, 0));
163 }
164 printf("\n\t%s il_alt il_azi", FNCFNM);
165 printf("\n0\n0\n");
166 il->dfnum++;
167 }
168
169
170 illumout(il, ob) /* print illum object */
171 register struct illum_args *il;
172 OBJREC *ob;
173 {
174 double cout[3];
175
176 if (il->sampdens <= 0)
177 printf("\n%s ", VOIDID);
178 else
179 printf("\n%s%s ", il->matname, DSTSUF);
180 printf("%s %s", ofun[il->flags&IL_LIGHT?MAT_LIGHT:MAT_ILLUM].funame,
181 il->matname);
182 if (il->flags & IL_LIGHT || !strcmp(il->altmat,VOIDID))
183 printf("\n0");
184 else
185 printf("\n1 %s", il->altmat);
186 if (il->flags & IL_COLAVG) {
187 cout[0] = il->col[0];
188 cout[1] = il->col[1];
189 cout[2] = il->col[2];
190 } else {
191 cout[0] = cout[1] = cout[2] = brt(il->col);
192 }
193 printf("\n0\n3 %f %f %f\n", cout[0], cout[1], cout[2]);
194
195 printobj(il->matname, ob);
196 }
197
198
199 average(il, da, n) /* compute average value for distribution */
200 register struct illum_args *il;
201 register float *da;
202 int n;
203 {
204 register int i;
205
206 il->col[0] = il->col[1] = il->col[2] = 0.;
207 i = n;
208 while (i-- > 0) {
209 il->col[0] += *da++;
210 il->col[1] += *da++;
211 il->col[2] += *da++;
212 }
213 for (i = 0; i < 3; i++)
214 il->col[i] /= (double)n*il->nsamps;
215
216 return(brt(il->col) > il->minbrt+FTINY);
217 }
218
219
220 static int colmcnt = 0; /* count of columns written */
221
222 fputnum(d, fp) /* put out a number to fp */
223 double d;
224 FILE *fp;
225 {
226 if (colmcnt++ % 6 == 0)
227 putc('\n', fp);
228 fprintf(fp, " %11e", d);
229 }
230
231
232 fputeol(fp) /* write end of line to fp */
233 register FILE *fp;
234 {
235 putc('\n', fp);
236 colmcnt = 0;
237 }
238
239
240 colorout(p, da, n, m, mult, fp) /* put out color distribution data */
241 int p;
242 register float *da;
243 int n, m;
244 double mult;
245 FILE *fp;
246 {
247 register int i, j;
248
249 for (i = 0; i < n; i++) {
250 for (j = 0; j < m; j++) {
251 fputnum(mult*da[p], fp);
252 da += 3;
253 }
254 fputnum(mult*da[p-3*m], fp); /* wrap phi */
255 }
256 fputeol(fp);
257 }
258
259
260 brightout(da, n, m, mult, fp) /* put out brightness distribution data */
261 register float *da;
262 int n, m;
263 double mult;
264 FILE *fp;
265 {
266 register int i, j;
267
268 for (i = 0; i < n; i++) {
269 for (j = 0; j < m; j++) {
270 fputnum(mult*brt(da), fp);
271 da += 3;
272 }
273 fputnum(mult*brt(da-3*m), fp); /* wrap phi */
274 }
275 fputeol(fp);
276 }