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root/radiance/ray/src/gen/mkillum3.c
Revision: 2.4
Committed: Mon Aug 10 15:55:10 1992 UTC (31 years, 7 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 2.3: +35 -14 lines
Log Message:
eliminated star patterns at poles by adding pole interpolation

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     FILE *dfp;
99 greg 2.4 float col[3];
100 greg 1.1 int i;
101    
102     if (il->flags & IL_COLDST) {
103     printf("\n%s %s %s%s", VOIDID, ofun[PAT_CDATA].funame,
104     il->matname, DSTSUF);
105 greg 2.4 printf("\n9 h_red h_grn h_blu");
106 greg 1.1 for (i = 0; i < 3; i++) {
107     dfp = dfopen(il, DATORD[i]);
108 greg 1.6 fprintf(dfp, "2\n%f %f %d\n%f %f %d\n",
109     1.-.5/n, .5/n, n,
110     0., 2.*PI, m+1);
111     colorout(i, da, n, m, 1./il->nsamps/il->col[i], dfp);
112 greg 1.1 fclose(dfp);
113     printf(" %s", dfname(il, DATORD[i]));
114     }
115     } else {
116     printf("\n%s %s %s%s", VOIDID, ofun[PAT_BDATA].funame,
117     il->matname, DSTSUF);
118 greg 2.4 printf("\n5 h_gry");
119 greg 1.1 dfp = dfopen(il, 0);
120 greg 1.6 fprintf(dfp, "2\n%f %f %d\n%f %f %d\n", 1.-.5/n, .5/n, n,
121     0., 2.*PI, m+1);
122     brightout(da, n, m, 1./il->nsamps/brt(il->col), dfp);
123 greg 1.1 fclose(dfp);
124     printf(" %s", dfname(il, 0));
125     }
126     printf("\n\t%s il_alth il_azih", FNCFNM);
127 greg 2.4 printf("\n0\n13\n");
128     compavg(col, da, m, il->nsamps);
129     printf("\t%f\t%f\t%f\t%f\n", col[0]/il->col[0],
130     col[1]/il->col[1], col[2]/il->col[2], 1.-.5/n);
131 greg 1.1 printf("\t%f\t%f\t%f\n", u[0], u[1], u[2]);
132     printf("\t%f\t%f\t%f\n", v[0], v[1], v[2]);
133     printf("\t%f\t%f\t%f\n", w[0], w[1], w[2]);
134     il->dfnum++;
135     }
136    
137    
138     roundout(il, da, n, m) /* write spherical distribution */
139     struct illum_args *il;
140     float *da;
141     int n, m;
142     {
143     FILE *dfp;
144 greg 2.4 float col[3];
145 greg 1.1 int i;
146    
147     if (il->flags & IL_COLDST) {
148     printf("\n%s %s %s%s", VOIDID, ofun[PAT_CDATA].funame,
149     il->matname, DSTSUF);
150 greg 2.4 printf("\n9 s_red s_grn s_blu");
151 greg 1.1 for (i = 0; i < 3; i++) {
152     dfp = dfopen(il, DATORD[i]);
153 greg 1.6 fprintf(dfp, "2\n%f %f %d\n%f %f %d\n",
154     1.-1./n, -1.+1./n, n,
155     0., 2.*PI, m+1);
156     colorout(i, da, n, m, 1./il->nsamps/il->col[i], dfp);
157 greg 1.1 fclose(dfp);
158     printf(" %s", dfname(il, DATORD[i]));
159     }
160     } else {
161     printf("\n%s %s %s%s", VOIDID, ofun[PAT_BDATA].funame,
162     il->matname, DSTSUF);
163 greg 2.4 printf("\n5 s_gry");
164 greg 1.1 dfp = dfopen(il, 0);
165 greg 1.6 fprintf(dfp, "2\n%f %f %d\n%f %f %d\n", 1.-1./n, -1.+1./n, n,
166     0., 2.*PI, m+1);
167     brightout(da, n, m, 1./il->nsamps/brt(il->col), dfp);
168 greg 1.1 fclose(dfp);
169     printf(" %s", dfname(il, 0));
170     }
171     printf("\n\t%s il_alt il_azi", FNCFNM);
172 greg 2.4 printf("\n0\n7\n");
173     compavg(col, da, m, il->nsamps); /* north pole */
174     printf("\t%f\t%f\t%f\n", col[0]/il->col[0],
175     col[1]/il->col[1], col[2]/il->col[2]);
176     compavg(col, da+(n-1)*m*3, m, il->nsamps); /* south pole */
177     printf("\t%f\t%f\t%f\n", col[0]/il->col[0],
178     col[1]/il->col[1], col[2]/il->col[2]);
179     printf("\t%f\n", 1.-1./n);
180 greg 1.1 il->dfnum++;
181 greg 1.2 }
182    
183    
184     illumout(il, ob) /* print illum object */
185     register struct illum_args *il;
186     OBJREC *ob;
187     {
188     double cout[3];
189    
190 greg 1.4 if (il->sampdens <= 0)
191     printf("\n%s ", VOIDID);
192     else
193     printf("\n%s%s ", il->matname, DSTSUF);
194     printf("%s %s", ofun[il->flags&IL_LIGHT?MAT_LIGHT:MAT_ILLUM].funame,
195 greg 1.2 il->matname);
196     if (il->flags & IL_LIGHT || !strcmp(il->altmat,VOIDID))
197     printf("\n0");
198     else
199     printf("\n1 %s", il->altmat);
200     if (il->flags & IL_COLAVG) {
201     cout[0] = il->col[0];
202     cout[1] = il->col[1];
203     cout[2] = il->col[2];
204     } else {
205     cout[0] = cout[1] = cout[2] = brt(il->col);
206     }
207 greg 1.3 printf("\n0\n3 %f %f %f\n", cout[0], cout[1], cout[2]);
208 greg 1.2
209     printobj(il->matname, ob);
210 greg 1.1 }
211    
212    
213 greg 2.4 compavg(col, da, n, ns) /* compute average for set of data values */
214     float col[3];
215 greg 1.1 register float *da;
216 greg 2.4 int n, ns;
217 greg 1.1 {
218     register int i;
219    
220 greg 2.4 col[0] = col[1] = col[2] = 0.;
221 greg 1.1 i = n;
222     while (i-- > 0) {
223 greg 2.4 col[0] += *da++;
224     col[1] += *da++;
225     col[2] += *da++;
226 greg 1.1 }
227     for (i = 0; i < 3; i++)
228 greg 2.4 col[i] /= (double)(n*ns);
229     }
230 greg 1.5
231 greg 2.4
232     average(il, da, n) /* evaluate average value for distribution */
233     register struct illum_args *il;
234     float *da;
235     int n;
236     {
237     compavg(il->col, da, n, il->nsamps);
238     /* brighter than minimum? */
239 greg 1.6 return(brt(il->col) > il->minbrt+FTINY);
240 greg 1.1 }
241    
242    
243 greg 1.6 static int colmcnt = 0; /* count of columns written */
244    
245     fputnum(d, fp) /* put out a number to fp */
246     double d;
247     FILE *fp;
248     {
249     if (colmcnt++ % 6 == 0)
250     putc('\n', fp);
251     fprintf(fp, " %11e", d);
252     }
253    
254    
255     fputeol(fp) /* write end of line to fp */
256     register FILE *fp;
257     {
258     putc('\n', fp);
259     colmcnt = 0;
260     }
261    
262    
263     colorout(p, da, n, m, mult, fp) /* put out color distribution data */
264 greg 1.1 int p;
265     register float *da;
266 greg 1.6 int n, m;
267 greg 1.1 double mult;
268     FILE *fp;
269     {
270 greg 1.6 register int i, j;
271 greg 1.1
272     for (i = 0; i < n; i++) {
273 greg 1.6 for (j = 0; j < m; j++) {
274     fputnum(mult*da[p], fp);
275     da += 3;
276     }
277     fputnum(mult*da[p-3*m], fp); /* wrap phi */
278 greg 1.1 }
279 greg 1.6 fputeol(fp);
280 greg 1.1 }
281    
282    
283 greg 1.6 brightout(da, n, m, mult, fp) /* put out brightness distribution data */
284 greg 1.1 register float *da;
285 greg 1.6 int n, m;
286 greg 1.1 double mult;
287     FILE *fp;
288     {
289 greg 1.6 register int i, j;
290 greg 1.1
291     for (i = 0; i < n; i++) {
292 greg 1.6 for (j = 0; j < m; j++) {
293     fputnum(mult*brt(da), fp);
294     da += 3;
295     }
296     fputnum(mult*brt(da-3*m), fp); /* wrap phi */
297 greg 1.1 }
298 greg 1.6 fputeol(fp);
299 greg 1.1 }