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root/radiance/ray/src/gen/mkillum3.c
Revision: 2.2
Committed: Wed Mar 11 12:25:49 1992 UTC (32 years ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 2.1: +2 -0 lines
Log Message:
changed so light below threshold is printed as ordinary object

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 2.2 if (!strcmp(mod, VOIDID)) /* don't print void objects */
28     return;
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     int i;
100    
101     if (il->flags & IL_COLDST) {
102     printf("\n%s %s %s%s", VOIDID, ofun[PAT_CDATA].funame,
103     il->matname, DSTSUF);
104     printf("\n9 red green blue");
105     for (i = 0; i < 3; i++) {
106     dfp = dfopen(il, DATORD[i]);
107 greg 1.6 fprintf(dfp, "2\n%f %f %d\n%f %f %d\n",
108     1.-.5/n, .5/n, n,
109     0., 2.*PI, m+1);
110     colorout(i, da, n, m, 1./il->nsamps/il->col[i], dfp);
111 greg 1.1 fclose(dfp);
112     printf(" %s", dfname(il, DATORD[i]));
113     }
114     } else {
115     printf("\n%s %s %s%s", VOIDID, ofun[PAT_BDATA].funame,
116     il->matname, DSTSUF);
117 greg 1.8 printf("\n5 noneg");
118 greg 1.1 dfp = dfopen(il, 0);
119 greg 1.6 fprintf(dfp, "2\n%f %f %d\n%f %f %d\n", 1.-.5/n, .5/n, n,
120     0., 2.*PI, m+1);
121     brightout(da, n, m, 1./il->nsamps/brt(il->col), dfp);
122 greg 1.1 fclose(dfp);
123     printf(" %s", dfname(il, 0));
124     }
125     printf("\n\t%s il_alth il_azih", FNCFNM);
126     printf("\n0\n9\n");
127     printf("\t%f\t%f\t%f\n", u[0], u[1], u[2]);
128     printf("\t%f\t%f\t%f\n", v[0], v[1], v[2]);
129     printf("\t%f\t%f\t%f\n", w[0], w[1], w[2]);
130     il->dfnum++;
131     }
132    
133    
134     roundout(il, da, n, m) /* write spherical distribution */
135     struct illum_args *il;
136     float *da;
137     int n, m;
138     {
139     FILE *dfp;
140     int i;
141    
142     if (il->flags & IL_COLDST) {
143     printf("\n%s %s %s%s", VOIDID, ofun[PAT_CDATA].funame,
144     il->matname, DSTSUF);
145     printf("\n9 red green blue");
146     for (i = 0; i < 3; i++) {
147     dfp = dfopen(il, DATORD[i]);
148 greg 1.6 fprintf(dfp, "2\n%f %f %d\n%f %f %d\n",
149     1.-1./n, -1.+1./n, n,
150     0., 2.*PI, m+1);
151     colorout(i, da, n, m, 1./il->nsamps/il->col[i], dfp);
152 greg 1.1 fclose(dfp);
153     printf(" %s", dfname(il, DATORD[i]));
154     }
155     } else {
156     printf("\n%s %s %s%s", VOIDID, ofun[PAT_BDATA].funame,
157     il->matname, DSTSUF);
158 greg 1.8 printf("\n5 noneg");
159 greg 1.1 dfp = dfopen(il, 0);
160 greg 1.6 fprintf(dfp, "2\n%f %f %d\n%f %f %d\n", 1.-1./n, -1.+1./n, n,
161     0., 2.*PI, m+1);
162     brightout(da, n, m, 1./il->nsamps/brt(il->col), dfp);
163 greg 1.1 fclose(dfp);
164     printf(" %s", dfname(il, 0));
165     }
166     printf("\n\t%s il_alt il_azi", FNCFNM);
167     printf("\n0\n0\n");
168     il->dfnum++;
169 greg 1.2 }
170    
171    
172     illumout(il, ob) /* print illum object */
173     register struct illum_args *il;
174     OBJREC *ob;
175     {
176     double cout[3];
177    
178 greg 1.4 if (il->sampdens <= 0)
179     printf("\n%s ", VOIDID);
180     else
181     printf("\n%s%s ", il->matname, DSTSUF);
182     printf("%s %s", ofun[il->flags&IL_LIGHT?MAT_LIGHT:MAT_ILLUM].funame,
183 greg 1.2 il->matname);
184     if (il->flags & IL_LIGHT || !strcmp(il->altmat,VOIDID))
185     printf("\n0");
186     else
187     printf("\n1 %s", il->altmat);
188     if (il->flags & IL_COLAVG) {
189     cout[0] = il->col[0];
190     cout[1] = il->col[1];
191     cout[2] = il->col[2];
192     } else {
193     cout[0] = cout[1] = cout[2] = brt(il->col);
194     }
195 greg 1.3 printf("\n0\n3 %f %f %f\n", cout[0], cout[1], cout[2]);
196 greg 1.2
197     printobj(il->matname, ob);
198 greg 1.1 }
199    
200    
201     average(il, da, n) /* compute average value for distribution */
202     register struct illum_args *il;
203     register float *da;
204     int n;
205     {
206     register int i;
207    
208     il->col[0] = il->col[1] = il->col[2] = 0.;
209     i = n;
210     while (i-- > 0) {
211     il->col[0] += *da++;
212     il->col[1] += *da++;
213     il->col[2] += *da++;
214     }
215     for (i = 0; i < 3; i++)
216     il->col[i] /= (double)n*il->nsamps;
217 greg 1.5
218 greg 1.6 return(brt(il->col) > il->minbrt+FTINY);
219 greg 1.1 }
220    
221    
222 greg 1.6 static int colmcnt = 0; /* count of columns written */
223    
224     fputnum(d, fp) /* put out a number to fp */
225     double d;
226     FILE *fp;
227     {
228     if (colmcnt++ % 6 == 0)
229     putc('\n', fp);
230     fprintf(fp, " %11e", d);
231     }
232    
233    
234     fputeol(fp) /* write end of line to fp */
235     register FILE *fp;
236     {
237     putc('\n', fp);
238     colmcnt = 0;
239     }
240    
241    
242     colorout(p, da, n, m, mult, fp) /* put out color distribution data */
243 greg 1.1 int p;
244     register float *da;
245 greg 1.6 int n, m;
246 greg 1.1 double mult;
247     FILE *fp;
248     {
249 greg 1.6 register int i, j;
250 greg 1.1
251     for (i = 0; i < n; i++) {
252 greg 1.6 for (j = 0; j < m; j++) {
253     fputnum(mult*da[p], fp);
254     da += 3;
255     }
256     fputnum(mult*da[p-3*m], fp); /* wrap phi */
257 greg 1.1 }
258 greg 1.6 fputeol(fp);
259 greg 1.1 }
260    
261    
262 greg 1.6 brightout(da, n, m, mult, fp) /* put out brightness distribution data */
263 greg 1.1 register float *da;
264 greg 1.6 int n, m;
265 greg 1.1 double mult;
266     FILE *fp;
267     {
268 greg 1.6 register int i, j;
269 greg 1.1
270     for (i = 0; i < n; i++) {
271 greg 1.6 for (j = 0; j < m; j++) {
272     fputnum(mult*brt(da), fp);
273     da += 3;
274     }
275     fputnum(mult*brt(da-3*m), fp); /* wrap phi */
276 greg 1.1 }
277 greg 1.6 fputeol(fp);
278 greg 1.1 }