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root/radiance/ray/src/gen/mkillum3.c
Revision: 1.5
Committed: Fri Aug 23 12:30:35 1991 UTC (32 years, 7 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 1.4: +2 -0 lines
Log Message:
added b variable for minimum brightness

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) (.295*(col)[0] + .636*(col)[1] + .070*(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\n1 0 %d\n0 %f %d\n", n, 2.*PI, m);
106 colorout(i, da, n*m, 1./il->nsamps/il->col[i], dfp);
107 fclose(dfp);
108 printf(" %s", dfname(il, DATORD[i]));
109 }
110 } else {
111 printf("\n%s %s %s%s", VOIDID, ofun[PAT_BDATA].funame,
112 il->matname, DSTSUF);
113 printf("\n5 noop");
114 dfp = dfopen(il, 0);
115 fprintf(dfp, "2\n1 0 %d\n0 %f %d\n", n, 2.*PI, m);
116 brightout(da, n*m, 1./il->nsamps/brt(il->col), dfp);
117 fclose(dfp);
118 printf(" %s", dfname(il, 0));
119 }
120 printf("\n\t%s il_alth il_azih", FNCFNM);
121 printf("\n0\n9\n");
122 printf("\t%f\t%f\t%f\n", u[0], u[1], u[2]);
123 printf("\t%f\t%f\t%f\n", v[0], v[1], v[2]);
124 printf("\t%f\t%f\t%f\n", w[0], w[1], w[2]);
125 il->dfnum++;
126 }
127
128
129 roundout(il, da, n, m) /* write spherical distribution */
130 struct illum_args *il;
131 float *da;
132 int n, m;
133 {
134 FILE *dfp;
135 int i;
136
137 if (il->flags & IL_COLDST) {
138 printf("\n%s %s %s%s", VOIDID, ofun[PAT_CDATA].funame,
139 il->matname, DSTSUF);
140 printf("\n9 red green blue");
141 for (i = 0; i < 3; i++) {
142 dfp = dfopen(il, DATORD[i]);
143 fprintf(dfp, "2\n1 -1 %d\n0 %f %d\n", n, 2.*PI, m);
144 colorout(i, da, n*m, 1./il->nsamps/il->col[i], dfp);
145 fclose(dfp);
146 printf(" %s", dfname(il, DATORD[i]));
147 }
148 } else {
149 printf("\n%s %s %s%s", VOIDID, ofun[PAT_BDATA].funame,
150 il->matname, DSTSUF);
151 printf("\n5 noop");
152 dfp = dfopen(il, 0);
153 fprintf(dfp, "2\n1 -1 %d\n0 %f %d\n", n, 2.*PI, m);
154 brightout(da, n*m, 1./il->nsamps/brt(il->col), dfp);
155 fclose(dfp);
156 printf(" %s", dfname(il, 0));
157 }
158 printf("\n\t%s il_alt il_azi", FNCFNM);
159 printf("\n0\n0\n");
160 il->dfnum++;
161 }
162
163
164 illumout(il, ob) /* print illum object */
165 register struct illum_args *il;
166 OBJREC *ob;
167 {
168 double cout[3];
169
170 if (il->sampdens <= 0)
171 printf("\n%s ", VOIDID);
172 else
173 printf("\n%s%s ", il->matname, DSTSUF);
174 printf("%s %s", ofun[il->flags&IL_LIGHT?MAT_LIGHT:MAT_ILLUM].funame,
175 il->matname);
176 if (il->flags & IL_LIGHT || !strcmp(il->altmat,VOIDID))
177 printf("\n0");
178 else
179 printf("\n1 %s", il->altmat);
180 if (il->flags & IL_COLAVG) {
181 cout[0] = il->col[0];
182 cout[1] = il->col[1];
183 cout[2] = il->col[2];
184 } else {
185 cout[0] = cout[1] = cout[2] = brt(il->col);
186 }
187 printf("\n0\n3 %f %f %f\n", cout[0], cout[1], cout[2]);
188
189 printobj(il->matname, ob);
190 }
191
192
193 average(il, da, n) /* compute average value for distribution */
194 register struct illum_args *il;
195 register float *da;
196 int n;
197 {
198 register int i;
199
200 il->col[0] = il->col[1] = il->col[2] = 0.;
201 i = n;
202 while (i-- > 0) {
203 il->col[0] += *da++;
204 il->col[1] += *da++;
205 il->col[2] += *da++;
206 }
207 for (i = 0; i < 3; i++)
208 il->col[i] /= (double)n*il->nsamps;
209
210 return(brt(il->col) >= il->minbrt);
211 }
212
213
214 colorout(p, da, n, mult, fp) /* put out color distribution data */
215 int p;
216 register float *da;
217 int n;
218 double mult;
219 FILE *fp;
220 {
221 register int i;
222
223 for (i = 0; i < n; i++) {
224 if (i%6 == 0)
225 putc('\n', fp);
226 fprintf(fp, " %11e", mult*da[p]);
227 da += 3;
228 }
229 putc('\n', fp);
230 }
231
232
233 brightout(da, n, mult, fp) /* put out brightness distribution data */
234 register float *da;
235 int n;
236 double mult;
237 FILE *fp;
238 {
239 register int i;
240
241 for (i = 0; i < n; i++) {
242 if (i%6 == 0)
243 putc('\n', fp);
244 fprintf(fp, " %11e", mult*brt(da));
245 da += 3;
246 }
247 putc('\n', fp);
248 }