ViewVC Help
View File | Revision Log | Show Annotations | Download File | Root Listing
root/radiance/ray/src/gen/mkillum3.c
Revision: 2.5
Committed: Wed Aug 12 14:18:04 1992 UTC (31 years, 7 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 2.4: +57 -28 lines
Log Message:
simplified interpolation of polar regions

File Contents

# User Rev Content
1 greg 1.1 /* 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 greg 1.7 #define brt(col) (.263*(col)[0]+.655*(col)[1]+.082*(col)[2])
14 greg 1.1
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 greg 2.3 if (issurface(obj->otype) && !strcmp(mod, VOIDID))
28     return; /* don't print void surfaces */
29 greg 1.1 printf("\n%s %s %s", mod, ofun[obj->otype].funame, obj->oname);
30     printf("\n%d", obj->oargs.nsargs);
31     for (i = 0; i < obj->oargs.nsargs; i++)
32     printf(" %s", obj->oargs.sarg[i]);
33     #ifdef IARGS
34     printf("\n%d", obj->oargs.niargs);
35     for (i = 0; i < obj->oargs.niargs; i++)
36     printf(" %d", obj->oargs.iarg[i]);
37     #else
38     printf("\n0");
39     #endif
40     printf("\n%d", obj->oargs.nfargs);
41     for (i = 0; i < obj->oargs.nfargs; i++) {
42     if (i%3 == 0)
43     putchar('\n');
44     printf(" %18.12g", obj->oargs.farg[i]);
45     }
46     putchar('\n');
47     }
48    
49    
50     char *
51     dfname(il, c) /* return data file name */
52     struct illum_args *il;
53     int c;
54     {
55     extern char *getpath(), *strcpy();
56     char fname[MAXSTR];
57     register char *s;
58    
59     s = strcpy(fname, il->datafile);
60     s += strlen(s);
61     if (c) *s++ = c;
62     if (il->dfnum > 0) {
63     sprintf(s, "%d", il->dfnum);
64     s += strlen(s);
65     }
66     strcpy(s, DATSUF);
67     return(getpath(fname, NULL, 0));
68     }
69    
70    
71     FILE *
72     dfopen(il, c) /* open data file */
73     register struct illum_args *il;
74     int c;
75     {
76     char *fn;
77     FILE *fp;
78     /* get a usable file name */
79     for (fn = dfname(il, c);
80     !(il->flags & IL_DATCLB) && access(fn, F_OK) == 0;
81     fn = dfname(il, c))
82     il->dfnum++;
83     /* open it for writing */
84     if ((fp = fopen(fn, "w")) == NULL) {
85     sprintf(errmsg, "cannot open data file \"%s\"", fn);
86     error(SYSTEM, errmsg);
87     }
88     return(fp);
89     }
90    
91    
92     flatout(il, da, n, m, u, v, w) /* write hemispherical distribution */
93     struct illum_args *il;
94     float *da;
95     int n, m;
96     FVECT u, v, w;
97     {
98 greg 2.5 float *Ninv;
99 greg 1.1 FILE *dfp;
100     int i;
101    
102 greg 2.5 if ((Ninv = (float *)malloc(3*m*sizeof(float))) == NULL)
103     error(SYSTEM, "out of memory in flatout");
104     compinv(Ninv, da, m);
105 greg 1.1 if (il->flags & IL_COLDST) {
106     printf("\n%s %s %s%s", VOIDID, ofun[PAT_CDATA].funame,
107     il->matname, DSTSUF);
108 greg 2.5 printf("\n9 red green blue");
109 greg 1.1 for (i = 0; i < 3; i++) {
110     dfp = dfopen(il, DATORD[i]);
111 greg 1.6 fprintf(dfp, "2\n%f %f %d\n%f %f %d\n",
112 greg 2.5 1.+.5/n, .5/n, n+1,
113 greg 1.6 0., 2.*PI, m+1);
114 greg 2.5 colorout(i, Ninv, 1, m, 1./il->nsamps/il->col[i], dfp);
115 greg 1.6 colorout(i, da, n, m, 1./il->nsamps/il->col[i], dfp);
116 greg 2.5 fputeol(dfp);
117 greg 1.1 fclose(dfp);
118     printf(" %s", dfname(il, DATORD[i]));
119     }
120     } else {
121     printf("\n%s %s %s%s", VOIDID, ofun[PAT_BDATA].funame,
122     il->matname, DSTSUF);
123 greg 2.5 printf("\n5 noneg");
124 greg 1.1 dfp = dfopen(il, 0);
125 greg 2.5 fprintf(dfp, "2\n%f %f %d\n%f %f %d\n", 1.+.5/n, .5/n, n+1,
126 greg 1.6 0., 2.*PI, m+1);
127 greg 2.5 brightout(Ninv, 1, m, 1./il->nsamps/brt(il->col), dfp);
128 greg 1.6 brightout(da, n, m, 1./il->nsamps/brt(il->col), dfp);
129 greg 2.5 fputeol(dfp);
130 greg 1.1 fclose(dfp);
131     printf(" %s", dfname(il, 0));
132     }
133     printf("\n\t%s il_alth il_azih", FNCFNM);
134 greg 2.5 printf("\n0\n9\n");
135 greg 1.1 printf("\t%f\t%f\t%f\n", u[0], u[1], u[2]);
136     printf("\t%f\t%f\t%f\n", v[0], v[1], v[2]);
137     printf("\t%f\t%f\t%f\n", w[0], w[1], w[2]);
138     il->dfnum++;
139 greg 2.5 free((char *)Ninv);
140 greg 1.1 }
141    
142    
143     roundout(il, da, n, m) /* write spherical distribution */
144     struct illum_args *il;
145     float *da;
146     int n, m;
147     {
148 greg 2.5 float *Ninv, *Sinv;
149 greg 1.1 FILE *dfp;
150     int i;
151    
152 greg 2.5 if ((Ninv = (float *)malloc(3*m*sizeof(float))) == NULL ||
153     (Sinv = (float *)malloc(3*m*sizeof(float))) == NULL)
154     error(SYSTEM, "out of memory in flatout");
155     compinv(Ninv, da, m);
156     compinv(Sinv, da+3*m*(n-1), m);
157 greg 1.1 if (il->flags & IL_COLDST) {
158     printf("\n%s %s %s%s", VOIDID, ofun[PAT_CDATA].funame,
159     il->matname, DSTSUF);
160 greg 2.5 printf("\n9 red green blue");
161 greg 1.1 for (i = 0; i < 3; i++) {
162     dfp = dfopen(il, DATORD[i]);
163 greg 1.6 fprintf(dfp, "2\n%f %f %d\n%f %f %d\n",
164 greg 2.5 1.+1./n, -1.-1./n, n+2,
165 greg 1.6 0., 2.*PI, m+1);
166 greg 2.5 colorout(i, Ninv, 1, m, 1./il->nsamps/il->col[i], dfp);
167 greg 1.6 colorout(i, da, n, m, 1./il->nsamps/il->col[i], dfp);
168 greg 2.5 colorout(i, Sinv, 1, m, 1./il->nsamps/il->col[i], dfp);
169     fputeol(dfp);
170 greg 1.1 fclose(dfp);
171     printf(" %s", dfname(il, DATORD[i]));
172     }
173     } else {
174     printf("\n%s %s %s%s", VOIDID, ofun[PAT_BDATA].funame,
175     il->matname, DSTSUF);
176 greg 2.5 printf("\n5 noneg");
177 greg 1.1 dfp = dfopen(il, 0);
178 greg 1.6 fprintf(dfp, "2\n%f %f %d\n%f %f %d\n", 1.-1./n, -1.+1./n, n,
179     0., 2.*PI, m+1);
180 greg 2.5 brightout(Ninv, 1, m, 1./il->nsamps/brt(il->col), dfp);
181 greg 1.6 brightout(da, n, m, 1./il->nsamps/brt(il->col), dfp);
182 greg 2.5 brightout(Sinv, 1, m, 1./il->nsamps/brt(il->col), dfp);
183     fputeol(dfp);
184 greg 1.1 fclose(dfp);
185     printf(" %s", dfname(il, 0));
186     }
187     printf("\n\t%s il_alt il_azi", FNCFNM);
188 greg 2.5 printf("\n0\n0\n");
189 greg 1.1 il->dfnum++;
190 greg 2.5 free((char *)Ninv);
191     free((char *)Sinv);
192 greg 1.2 }
193    
194    
195     illumout(il, ob) /* print illum object */
196     register struct illum_args *il;
197     OBJREC *ob;
198     {
199     double cout[3];
200    
201 greg 1.4 if (il->sampdens <= 0)
202     printf("\n%s ", VOIDID);
203     else
204     printf("\n%s%s ", il->matname, DSTSUF);
205     printf("%s %s", ofun[il->flags&IL_LIGHT?MAT_LIGHT:MAT_ILLUM].funame,
206 greg 1.2 il->matname);
207     if (il->flags & IL_LIGHT || !strcmp(il->altmat,VOIDID))
208     printf("\n0");
209     else
210     printf("\n1 %s", il->altmat);
211     if (il->flags & IL_COLAVG) {
212     cout[0] = il->col[0];
213     cout[1] = il->col[1];
214     cout[2] = il->col[2];
215     } else {
216     cout[0] = cout[1] = cout[2] = brt(il->col);
217     }
218 greg 1.3 printf("\n0\n3 %f %f %f\n", cout[0], cout[1], cout[2]);
219 greg 1.2
220     printobj(il->matname, ob);
221 greg 1.1 }
222    
223    
224 greg 2.5 compavg(col, da, n) /* compute average for set of data values */
225 greg 2.4 float col[3];
226 greg 1.1 register float *da;
227 greg 2.5 int n;
228 greg 1.1 {
229     register int i;
230    
231 greg 2.4 col[0] = col[1] = col[2] = 0.;
232 greg 1.1 i = n;
233     while (i-- > 0) {
234 greg 2.4 col[0] += *da++;
235     col[1] += *da++;
236     col[2] += *da++;
237 greg 1.1 }
238     for (i = 0; i < 3; i++)
239 greg 2.5 col[i] /= (double)n;
240 greg 2.4 }
241 greg 1.5
242 greg 2.4
243 greg 2.5 compinv(rinv, rp, m) /* compute other side of row average */
244     register float *rinv, *rp;
245     int m;
246     {
247     float avg[3];
248    
249     compavg(avg, rp, m); /* row average */
250     while (m-- > 0) {
251     *rinv++ = 2.*avg[0] - *rp++;
252     *rinv++ = 2.*avg[1] - *rp++;
253     *rinv++ = 2.*avg[2] - *rp++;
254     }
255     }
256    
257    
258 greg 2.4 average(il, da, n) /* evaluate average value for distribution */
259     register struct illum_args *il;
260     float *da;
261     int n;
262     {
263 greg 2.5 compavg(il->col, da, n); /* average */
264     if (il->nsamps > 1) {
265     il->col[0] /= (double)il->nsamps;
266     il->col[1] /= (double)il->nsamps;
267     il->col[2] /= (double)il->nsamps;
268     }
269 greg 2.4 /* brighter than minimum? */
270 greg 1.6 return(brt(il->col) > il->minbrt+FTINY);
271 greg 1.1 }
272    
273    
274 greg 1.6 static int colmcnt = 0; /* count of columns written */
275    
276     fputnum(d, fp) /* put out a number to fp */
277     double d;
278     FILE *fp;
279     {
280 greg 2.5 if (colmcnt++ % 5 == 0)
281 greg 1.6 putc('\n', fp);
282     fprintf(fp, " %11e", d);
283     }
284    
285    
286     fputeol(fp) /* write end of line to fp */
287     register FILE *fp;
288     {
289     putc('\n', fp);
290     colmcnt = 0;
291     }
292    
293    
294     colorout(p, da, n, m, mult, fp) /* put out color distribution data */
295 greg 1.1 int p;
296     register float *da;
297 greg 1.6 int n, m;
298 greg 1.1 double mult;
299     FILE *fp;
300     {
301 greg 1.6 register int i, j;
302 greg 1.1
303     for (i = 0; i < n; i++) {
304 greg 1.6 for (j = 0; j < m; j++) {
305     fputnum(mult*da[p], fp);
306     da += 3;
307     }
308     fputnum(mult*da[p-3*m], fp); /* wrap phi */
309 greg 1.1 }
310     }
311    
312    
313 greg 1.6 brightout(da, n, m, mult, fp) /* put out brightness distribution data */
314 greg 1.1 register float *da;
315 greg 1.6 int n, m;
316 greg 1.1 double mult;
317     FILE *fp;
318     {
319 greg 1.6 register int i, j;
320 greg 1.1
321     for (i = 0; i < n; i++) {
322 greg 1.6 for (j = 0; j < m; j++) {
323     fputnum(mult*brt(da), fp);
324     da += 3;
325     }
326     fputnum(mult*brt(da-3*m), fp); /* wrap phi */
327 greg 1.1 }
328     }