1 |
#ifndef lint |
2 |
static const char RCSid[] = "$Id: ies2rad.c,v 2.31 2018/06/05 16:04:00 greg Exp $"; |
3 |
#endif |
4 |
/* |
5 |
* ies2rad -- Convert IES luminaire data to Radiance description |
6 |
* |
7 |
* ies2rad converts an IES LM-63 luminare description to a Radiance |
8 |
* luminaire description. In addition, ies2rad manages a local |
9 |
* database of Radiance luminaire files. |
10 |
* |
11 |
* Ies2rad generates two or three files for each luminaire. For a |
12 |
* luminaire named LUM, ies2rad will generate LUM.rad, a Radiance |
13 |
* scene description file which describes the light source, LUM.dat, |
14 |
* which contains the photometric data from the IES LM-63 file, and |
15 |
* (if tilt data is provided) LUM%.dat, which contains the tilt data |
16 |
* from the IES file. |
17 |
* |
18 |
* Ies2rad is supported by the Radiance function files source.cal and |
19 |
* tilt.cal, which transform the coordinates in the IES data into |
20 |
* Radiance (θ,φ) luminaire coordinates and then apply photometric and |
21 |
* tilt data to generate Radiance light. θ is altitude from the |
22 |
* negative z-axis and φ is azimuth from the positive x-axis, |
23 |
* increasing towards the positive y-axis. This system matches none of |
24 |
* the usual goniophotometric conventions, but it is closest to IES |
25 |
* type C; V in type C photometry is θ in Radiance and L is -φ. |
26 |
* |
27 |
* The ies2rad scene description for a luminaire LUM, with tilt data, |
28 |
* uses the following Radiance scene description primitives: |
29 |
* |
30 |
* void brightdata LUM_tilt |
31 |
* … |
32 |
* LUM_tilt brightdata LUM_dist |
33 |
* … |
34 |
* LUM_dist light LUM_light |
35 |
* … |
36 |
* LUM_light surface1 name1 |
37 |
* … |
38 |
* LUM_light surface2 name2 |
39 |
* … |
40 |
* LUM_light surface_n name_n |
41 |
* |
42 |
* Without tilt data, the primitives are: |
43 |
* |
44 |
* void brightdata LUM_dist |
45 |
* … |
46 |
* LUM_dist light LUM_light |
47 |
* … |
48 |
* LUM_light surface1 name1 |
49 |
* … |
50 |
* LUM_light surface2 name2 |
51 |
* … |
52 |
* LUM_light surface_n name_n |
53 |
* |
54 |
* As many surfaces are given as required to describe the light |
55 |
* source. Illum may be used rather than light so that a visible form |
56 |
* (impostor) may be given to the luminaire, rather than a simple |
57 |
* glowing shape. If an impostor is provided, it must be wholly |
58 |
* contained within the illum and if it provides impostor light |
59 |
* sources, those must be given with glow, so that they do not |
60 |
* themselves illuminate the scene, providing incorrect results. |
61 |
* |
62 |
* The ies2rad code uses the "bsd" style. For emacs, this is set up |
63 |
* automatically in the "Local Variables" section at the end of the |
64 |
* file. For vim, use ":set tabstop=8 shiftwidth=8". |
65 |
* |
66 |
* 07Apr90 Greg Ward |
67 |
* |
68 |
* Fixed correction factor for flat sources 29Oct2001 GW |
69 |
* Extensive comments added by Randolph Fritz May2018 |
70 |
*/ |
71 |
|
72 |
#include <math.h> |
73 |
#include <ctype.h> |
74 |
|
75 |
#include "rtio.h" |
76 |
#include "color.h" |
77 |
#include "paths.h" |
78 |
|
79 |
#define PI 3.14159265358979323846 |
80 |
|
81 |
/* floating comparisons -- floating point numbers within FTINY of each |
82 |
* other are considered equal */ |
83 |
#define FTINY 1e-6 |
84 |
#define FEQ(a,b) ((a)<=(b)+FTINY&&(a)>=(b)-FTINY) |
85 |
|
86 |
|
87 |
/* IESNA LM-63 keywords and constants */ |
88 |
/* Since 1991, LM-63 files have begun with the magic keyword IESNA */ |
89 |
#define MAGICID "IESNA" |
90 |
#define LMAGICID 5 |
91 |
/* But newer files start with IESNA:LM-63- */ |
92 |
#define MAGICID2 "IESNA:LM-63-" |
93 |
#define LMAGICID2 12 |
94 |
/* ies2rad supports the 1986, 1991, and 1995 versions of |
95 |
* LM-63. FIRSTREV describes the first version; LASTREV describes the |
96 |
* 1995 version. */ |
97 |
#define FIRSTREV 86 |
98 |
#define LASTREV 95 |
99 |
|
100 |
/* The following definitions support LM-63 file keyword reading and |
101 |
* analysis. |
102 |
* |
103 |
* This section defines two function-like macros: keymatch(i,s), which |
104 |
* checks to see if keyword i matches string s, and checklamp(s), |
105 |
* which checks to see if a string matches the keywords "LAMP" or |
106 |
* "LAMPCAT". |
107 |
* |
108 |
* LM-63-1986 files begin with a list of free-form label lines. |
109 |
* LM-63-1991 files begin with the identifying line "IESNA91" followed |
110 |
* by a list of formatted keywords. LM-63-1995 files begin with the |
111 |
* identifying line "IESNA:LM-63-1995" followed by a list of formatted |
112 |
* keywords. |
113 |
* |
114 |
* The K_* #defines enumerate the keywords used in the different |
115 |
* versions of the file and give them symbolic names. |
116 |
* |
117 |
* The D86, D91, and D95 #defines validate the keywords in the 1986, |
118 |
* 1991, and 1995 versions of the standard, one bit per keyword. |
119 |
* Since the 1986 standard does not use keywords, D86 is zero. The |
120 |
* 1991 standard has 13 keywords, and D91 has the lower 13 bits set. |
121 |
* The 1995 standard has 14 keywords, and D95 has the lower 14 bits |
122 |
* set. |
123 |
* |
124 |
*/ |
125 |
#define D86 0 |
126 |
|
127 |
#define K_TST 0 |
128 |
#define K_MAN 1 |
129 |
#define K_LMC 2 |
130 |
#define K_LMN 3 |
131 |
#define K_LPC 4 |
132 |
#define K_LMP 5 |
133 |
#define K_BAL 6 |
134 |
#define K_MTC 7 |
135 |
#define K_OTH 8 |
136 |
#define K_SCH 9 |
137 |
#define K_MOR 10 |
138 |
#define K_BLK 11 |
139 |
#define K_EBK 12 |
140 |
|
141 |
/* keywords defined in LM-63-1991 */ |
142 |
#define D91 ((1L<<13)-1) |
143 |
|
144 |
#define K_LMG 13 |
145 |
|
146 |
/* keywords defined in LM-63-1995 */ |
147 |
#define D95 ((1L<<14)-1) |
148 |
|
149 |
char k_kwd[][20] = {"TEST", "MANUFAC", "LUMCAT", "LUMINAIRE", "LAMPCAT", |
150 |
"LAMP", "BALLAST", "MAINTCAT", "OTHER", "SEARCH", |
151 |
"MORE", "BLOCK", "ENDBLOCK", "LUMINOUSGEOMETRY"}; |
152 |
|
153 |
long k_defined[] = {D86, D86, D86, D86, D86, D91, D91, D91, D91, D95}; |
154 |
|
155 |
int filerev = FIRSTREV; |
156 |
|
157 |
#define keymatch(i,s) (k_defined[filerev-FIRSTREV]&1L<<(i) &&\ |
158 |
k_match(k_kwd[i],s)) |
159 |
|
160 |
#define checklamp(s) (!(k_defined[filerev-FIRSTREV]&(1<<K_LMP|1<<K_LPC)) ||\ |
161 |
keymatch(K_LMP,s) || keymatch(K_LPC,s)) |
162 |
|
163 |
/* tilt specs |
164 |
* |
165 |
* This next series of definitions address metal-halide lamps, which |
166 |
* change their brightness depending on the angle at which they are |
167 |
* mounted. The section begins with "TILT=". The constants in this |
168 |
* section are all defined in LM-63. |
169 |
* |
170 |
*/ |
171 |
|
172 |
#define TLTSTR "TILT=" |
173 |
#define TLTSTRLEN 5 |
174 |
#define TLTNONE "NONE" |
175 |
#define TLTINCL "INCLUDE" |
176 |
#define TLT_VERT 1 |
177 |
#define TLT_H0 2 |
178 |
#define TLT_H90 3 |
179 |
|
180 |
/* Constants from LM-63 files */ |
181 |
|
182 |
/* photometric types |
183 |
* |
184 |
* This enumeration reflects three different methods of measuring the |
185 |
* distribution of light from a luminaire -- "goniophotometry" -- and |
186 |
* the different coordinate systems related to these |
187 |
* goniophotometers. All are described in IES standard LM-75-01. |
188 |
* Earlier and shorter descriptions may be found the LM-63 standards |
189 |
* from 1986, 1991, and 1995. |
190 |
* |
191 |
* ies2rad does not support type A photometry. |
192 |
* |
193 |
* In the 1986 file format, LM-63-86, 1 is used for type C and type A |
194 |
* photometric data. |
195 |
* |
196 |
*/ |
197 |
#define PM_C 1 |
198 |
#define PM_B 2 |
199 |
#define PM_A 3 |
200 |
|
201 |
/* unit types */ |
202 |
#define U_FEET 1 |
203 |
#define U_METERS 2 |
204 |
|
205 |
/* string lengths */ |
206 |
/* Maximum input line is 256 characters including CR LF at end. */ |
207 |
#define MAXLINE 257 |
208 |
#define RMAXWORD 76 |
209 |
|
210 |
/* End of LM-63-related #defines */ |
211 |
|
212 |
/* file extensions */ |
213 |
#define T_RAD ".rad" |
214 |
#define T_DST ".dat" |
215 |
#define T_TLT "%.dat" |
216 |
#define T_OCT ".oct" |
217 |
|
218 |
/* shape types |
219 |
* These #defines enumerate the shapes of the Radiance objects which |
220 |
* emit the light. |
221 |
*/ |
222 |
#define RECT 1 |
223 |
#define DISK 2 |
224 |
#define SPHERE 3 |
225 |
|
226 |
/* The diameter of a point source luminaire model. Also the minimum |
227 |
* size (in meters) that the luminous opening of a luminaire must have |
228 |
* to be treated as other than a point source. */ |
229 |
#define MINDIM .001 |
230 |
|
231 |
/* feet to meters */ |
232 |
/* length_in_meters = length_in_feet * F_M */ |
233 |
#define F_M .3048 |
234 |
|
235 |
/* abspath - return true if a path begins with a directory separator |
236 |
* or a '.' (current directory) */ |
237 |
#define abspath(p) (ISDIRSEP((p)[0]) || (p)[0] == '.') |
238 |
|
239 |
/* Global variables. |
240 |
* |
241 |
* Mostly, these are a way of communicating command line parameters to |
242 |
* the rest of the program. |
243 |
*/ |
244 |
static char default_name[] = "default"; |
245 |
|
246 |
char *libdir = NULL; /* library directory location */ |
247 |
char *prefdir = NULL; /* subdirectory */ |
248 |
char *lampdat = "lamp.tab"; /* lamp data file */ |
249 |
|
250 |
double meters2out = 1.0; /* conversion from meters to output */ |
251 |
char *lamptype = NULL; /* selected lamp type */ |
252 |
char *deflamp = NULL; /* default lamp type */ |
253 |
float defcolor[3] = {1.,1.,1.}; /* default lamp color */ |
254 |
float *lampcolor = defcolor; /* pointer to current lamp color */ |
255 |
double multiplier = 1.0; /* multiplier for all light sources */ |
256 |
char units[64] = "meters"; /* output units */ |
257 |
int out2stdout = 0; /* put out to stdout r.t. file */ |
258 |
int instantiate = 0; /* instantiate geometry */ |
259 |
double illumrad = 0.0; /* radius for illum sphere */ |
260 |
|
261 |
/* This struct describes the Radiance source object */ |
262 |
typedef struct { |
263 |
int isillum; /* do as illum */ |
264 |
int type; /* RECT, DISK, SPHERE */ |
265 |
double mult; /* candela multiplier */ |
266 |
double w, l, h; /* width, length, height */ |
267 |
double area; /* max. projected area */ |
268 |
} SRCINFO; /* a source shape (units=meters) */ |
269 |
|
270 |
/* A count and pointer to the list of input file names */ |
271 |
int gargc; /* global argc */ |
272 |
char **gargv; /* global argv */ |
273 |
|
274 |
/* macros to scan numbers out of IES files |
275 |
* |
276 |
* fp is a file pointer. scnint() places the number in the integer |
277 |
* indicated by ip; scnflt() places the number in the double indicated |
278 |
* by rp. The macros return 1 if successful, 0 if not. |
279 |
* |
280 |
*/ |
281 |
#define scnint(fp,ip) cvtint(ip,getword(fp)) |
282 |
#define scnflt(fp,rp) cvtflt(rp,getword(fp)) |
283 |
|
284 |
/* The original (1986) version of LM-63 allows decimals points in |
285 |
* integers, so that, for instance, the number of lamps may be written |
286 |
* 3.0 (the number, obviously, must still be an integer.) This |
287 |
* confusing define accommodates that. */ |
288 |
#define isint isflt |
289 |
|
290 |
/* Function declarations */ |
291 |
static int ies2rad(char *inpname, char *outname); |
292 |
static void initlamps(void); |
293 |
static int dosource(SRCINFO *sinf, FILE *in, FILE *out, char *mod, char *name); |
294 |
static int dotilt(FILE *in, FILE *out, char *dir, char *tltspec, |
295 |
char *dfltname, char *tltid); |
296 |
static int cvgeometry(char *inpname, SRCINFO *sinf, char *outname, FILE *outfp); |
297 |
static int cvtint(int *ip, char *wrd); |
298 |
static int cvdata(FILE *in, FILE *out, int ndim, int npts[], double mult, |
299 |
double lim[][2]); |
300 |
static int cvtflt(double *rp, char *wrd); |
301 |
static int makeshape(SRCINFO *shp, double width, double length, double height); |
302 |
static int putsource(SRCINFO *shp, FILE *fp, char *mod, char *name, |
303 |
int dolower, int doupper, int dosides); |
304 |
static void putrectsrc(SRCINFO *shp, FILE *fp, char *mod, char *name, int up); |
305 |
static void putsides(SRCINFO *shp, FILE *fp, char *mod, char *name); |
306 |
static void putdisksrc(SRCINFO *shp, FILE *fp, char *mod, char *name, int up); |
307 |
static void putspheresrc(SRCINFO *shp, FILE *fp, char *mod, char *name); |
308 |
static void putrect(SRCINFO *shp, FILE *fp, char *mod, char *name, char *suffix, |
309 |
int a, int b, int c, int d); |
310 |
static void putpoint(SRCINFO *shp, FILE *fp, int p); |
311 |
static void putcyl(SRCINFO *shp, FILE *fp, char *mod, char *name); |
312 |
static char * tailtrunc(char *name); |
313 |
static char * filename(char *path); |
314 |
static char * libname(char *path, char *fname, char *suffix); |
315 |
static char * getword(FILE *fp); |
316 |
static char * fullnam(char *path, char *fname, char *suffix); |
317 |
|
318 |
/* main - process arguments and run the conversion |
319 |
* |
320 |
* Refer to the man page for details of the arguments. |
321 |
* |
322 |
* Following Unix environment conventions, main() exits with 0 on |
323 |
* success and 1 on failure. |
324 |
* |
325 |
* ies2rad outputs either two or three files for a given IES |
326 |
* file. There is always a .rad file containing Radiance scene |
327 |
* description primitives and a .dat file for the photometric data. If |
328 |
* tilt data is given, that is placed in a separate .dat file. So |
329 |
* ies2rad must have a filename to operate. Sometimes this name is the |
330 |
* input file name, shorn of its extension; sometimes it is given in |
331 |
* the -o option. But an output file name is required for ies2rad to |
332 |
* do its work. |
333 |
* |
334 |
* Older versions of the LM-63 standard allowed inclusion of multiple |
335 |
* luminaires in one IES file; this is not supported by ies2rad. |
336 |
* |
337 |
* This code sometimes does not check to make sure it has not run out |
338 |
* of arguments; this can lead to segmentation faults and perhaps |
339 |
* other errors. |
340 |
* |
341 |
*/ |
342 |
int |
343 |
main( |
344 |
int argc, |
345 |
char *argv[] |
346 |
) |
347 |
{ |
348 |
char *outfile = NULL; |
349 |
int status; |
350 |
char outname[RMAXWORD]; |
351 |
double d1; |
352 |
int i; |
353 |
|
354 |
/* Scan the options */ |
355 |
for (i = 1; i < argc && argv[i][0] == '-'; i++) |
356 |
switch (argv[i][1]) { |
357 |
case 'd': /* dimensions */ |
358 |
if (argv[i][2] == '\0') |
359 |
goto badopt; |
360 |
if (argv[i][3] == '\0') |
361 |
d1 = 1.0; |
362 |
else if (argv[i][3] == '/') { |
363 |
d1 = atof(argv[i]+4); |
364 |
if (d1 <= FTINY) |
365 |
goto badopt; |
366 |
} else |
367 |
goto badopt; |
368 |
switch (argv[i][2]) { |
369 |
case 'c': /* centimeters */ |
370 |
if (FEQ(d1,10.)) |
371 |
strcpy(units,"millimeters"); |
372 |
else { |
373 |
strcpy(units,"centimeters"); |
374 |
strcat(units,argv[i]+3); |
375 |
} |
376 |
meters2out = 100.*d1; |
377 |
break; |
378 |
case 'm': /* meters */ |
379 |
if (FEQ(d1,1000.)) |
380 |
strcpy(units,"millimeters"); |
381 |
else if (FEQ(d1,100.)) |
382 |
strcpy(units,"centimeters"); |
383 |
else { |
384 |
strcpy(units,"meters"); |
385 |
strcat(units,argv[i]+3); |
386 |
} |
387 |
meters2out = d1; |
388 |
break; |
389 |
case 'i': /* inches */ |
390 |
strcpy(units,"inches"); |
391 |
strcat(units,argv[i]+3); |
392 |
meters2out = d1*(12./F_M); |
393 |
break; |
394 |
case 'f': /* feet */ |
395 |
if (FEQ(d1,12.)) |
396 |
strcpy(units,"inches"); |
397 |
else { |
398 |
strcpy(units,"feet"); |
399 |
strcat(units,argv[i]+3); |
400 |
} |
401 |
meters2out = d1/F_M; |
402 |
break; |
403 |
default: |
404 |
goto badopt; |
405 |
} |
406 |
break; |
407 |
case 'l': /* library directory */ |
408 |
libdir = argv[++i]; |
409 |
break; |
410 |
case 'p': /* prefix subdirectory */ |
411 |
prefdir = argv[++i]; |
412 |
break; |
413 |
case 'f': /* lamp data file */ |
414 |
lampdat = argv[++i]; |
415 |
break; |
416 |
case 'o': /* output file root name */ |
417 |
outfile = argv[++i]; |
418 |
break; |
419 |
case 's': /* output to stdout */ |
420 |
out2stdout = !out2stdout; |
421 |
break; |
422 |
case 'i': /* illum */ |
423 |
illumrad = atof(argv[++i]); |
424 |
break; |
425 |
case 'g': /* instantiate geometry? */ |
426 |
instantiate = !instantiate; |
427 |
break; |
428 |
case 't': /* override lamp type */ |
429 |
lamptype = argv[++i]; |
430 |
break; |
431 |
case 'u': /* default lamp type */ |
432 |
deflamp = argv[++i]; |
433 |
break; |
434 |
case 'c': /* default lamp color */ |
435 |
defcolor[0] = atof(argv[++i]); |
436 |
defcolor[1] = atof(argv[++i]); |
437 |
defcolor[2] = atof(argv[++i]); |
438 |
break; |
439 |
case 'm': /* multiplier */ |
440 |
multiplier = atof(argv[++i]); |
441 |
break; |
442 |
default: |
443 |
badopt: |
444 |
fprintf(stderr, "%s: bad option: %s\n", |
445 |
argv[0], argv[i]); |
446 |
exit(1); |
447 |
} |
448 |
/* Save pointers to the list of input file names */ |
449 |
gargc = i; |
450 |
gargv = argv; |
451 |
|
452 |
/* get lamp data (if needed) */ |
453 |
initlamps(); |
454 |
|
455 |
/* convert ies file(s) */ |
456 |
/* If an output file name is specified */ |
457 |
if (outfile != NULL) { |
458 |
if (i == argc) |
459 |
/* If no input filename is given, use stdin as |
460 |
* the source for the IES file */ |
461 |
exit(ies2rad(NULL, outfile) == 0 ? 0 : 1); |
462 |
else if (i == argc-1) |
463 |
/* If exactly one input file name is given, use it. */ |
464 |
exit(ies2rad(argv[i], outfile) == 0 ? 0 : 1); |
465 |
else |
466 |
goto needsingle; /* Otherwise, error. */ |
467 |
} else if (i >= argc) { |
468 |
/* If an output file and an input file are not give, error. */ |
469 |
fprintf(stderr, "%s: missing output file specification\n", |
470 |
argv[0]); |
471 |
exit(1); |
472 |
} |
473 |
/* If no input or output file is given, error. */ |
474 |
if (out2stdout && i != argc-1) |
475 |
goto needsingle; |
476 |
/* Otherwise, process each input file in turn. */ |
477 |
status = 0; |
478 |
for ( ; i < argc; i++) { |
479 |
tailtrunc(strcpy(outname,filename(argv[i]))); |
480 |
if (ies2rad(argv[i], outname) != 0) |
481 |
status = 1; |
482 |
} |
483 |
exit(status); |
484 |
needsingle: |
485 |
fprintf(stderr, "%s: single input file required\n", argv[0]); |
486 |
exit(1); |
487 |
} |
488 |
|
489 |
/* Initlamps -- If necessary, read lamp data table */ |
490 |
void |
491 |
initlamps(void) /* set up lamps */ |
492 |
{ |
493 |
float *lcol; |
494 |
int status; |
495 |
|
496 |
/* If the lamp name is set to default, don't bother to read |
497 |
* the lamp data table. */ |
498 |
if (lamptype != NULL && !strcmp(lamptype, default_name) && |
499 |
deflamp == NULL) |
500 |
return; |
501 |
|
502 |
if ((status = loadlamps(lampdat)) < 0) /* Load the lamp data table */ |
503 |
exit(1); /* Exit if problems |
504 |
* with the file. */ |
505 |
if (status == 0) { |
506 |
/* If can't open the file, just use the standard default lamp */ |
507 |
fprintf(stderr, "%s: warning - no lamp data\n", lampdat); |
508 |
lamptype = default_name; |
509 |
return; |
510 |
} |
511 |
if (deflamp != NULL) { |
512 |
/* Look up the specified default lamp type */ |
513 |
if ((lcol = matchlamp(deflamp)) == NULL) |
514 |
/* If it can't be found, use the default */ |
515 |
fprintf(stderr, |
516 |
"%s: warning - unknown default lamp type\n", |
517 |
deflamp); |
518 |
else |
519 |
/* Use the selected default lamp color */ |
520 |
copycolor(defcolor, lcol); |
521 |
} |
522 |
/* If a lamp type is specified and can be found, use it, and |
523 |
* release the lamp data table memory; it won't be needed any more. */ |
524 |
if (lamptype != NULL) { |
525 |
if (strcmp(lamptype, default_name)) { |
526 |
if ((lcol = matchlamp(lamptype)) == NULL) { |
527 |
fprintf(stderr, |
528 |
"%s: warning - unknown lamp type\n", |
529 |
lamptype); |
530 |
lamptype = default_name; |
531 |
} else |
532 |
copycolor(defcolor, lcol); |
533 |
} |
534 |
freelamps(); /* all done with data */ |
535 |
} |
536 |
/* else keep lamp data */ |
537 |
} |
538 |
|
539 |
/* |
540 |
* File path operations |
541 |
* |
542 |
* These provide file path operations that operate on both MS-Windows |
543 |
* and *nix. They will ignore and pass, but will not necessarily |
544 |
* process correctly, Windows drive letters. Paths including Windows |
545 |
* UNC network names (\\server\folder\file) may also cause problems. |
546 |
* |
547 |
*/ |
548 |
|
549 |
/* |
550 |
* stradd() |
551 |
* |
552 |
* Add a string to the end of a string, optionally concatenating a |
553 |
* file path separator character. If the path already ends with a |
554 |
* path separator, no additional separator is appended. |
555 |
* |
556 |
*/ |
557 |
char * |
558 |
stradd( /* add a string at dst */ |
559 |
char *dst, |
560 |
char *src, |
561 |
int sep |
562 |
) |
563 |
{ |
564 |
if (src && *src) { |
565 |
do |
566 |
*dst++ = *src++; |
567 |
while (*src); |
568 |
if (sep && dst[-1] != sep) |
569 |
*dst++ = sep; |
570 |
} |
571 |
*dst = '\0'; |
572 |
return(dst); |
573 |
} |
574 |
|
575 |
/* |
576 |
* fullnam () - return a usable path name for an output file |
577 |
*/ |
578 |
char * |
579 |
fullnam( |
580 |
char *path, /* The base directory path */ |
581 |
char *fname, /* The file name */ |
582 |
char *suffix /* A suffix, which usually contains |
583 |
* a file name extension. */ |
584 |
) |
585 |
{ |
586 |
extern char *prefdir; |
587 |
extern char *libdir; |
588 |
|
589 |
if (prefdir != NULL && abspath(prefdir)) |
590 |
/* If the subdirectory path is absolute or '.', just |
591 |
* concatenate the names together */ |
592 |
libname(path, fname, suffix); |
593 |
else if (abspath(fname)) |
594 |
/* If there is no subdirectory, and the file name is |
595 |
* an absolute path or '.', concatenate the path, |
596 |
* filename, and suffix. */ |
597 |
strcpy(stradd(path, fname, 0), suffix); |
598 |
else |
599 |
/* If the file name is relative, concatenate path, |
600 |
* library directory, directory separator, file name, |
601 |
* and suffix. */ |
602 |
libname(stradd(path, libdir, DIRSEP), fname, suffix); |
603 |
|
604 |
return(path); |
605 |
} |
606 |
|
607 |
|
608 |
/* |
609 |
* libname - convert a file name to a path |
610 |
*/ |
611 |
char * |
612 |
libname( |
613 |
char *path, /* The base directory path */ |
614 |
char *fname, /* The file name */ |
615 |
char *suffix /* A suffix, which usually contains |
616 |
* a file name extension. */ |
617 |
) |
618 |
{ |
619 |
extern char *prefdir; /* The subdirectory where the file |
620 |
* name is stored. */ |
621 |
|
622 |
if (abspath(fname)) |
623 |
/* If the file name begins with '/' or '.', combine |
624 |
* it with the path and attach the suffix */ |
625 |
strcpy(stradd(path, fname, 0), suffix); |
626 |
else |
627 |
/* If the file name is relative, attach it to the |
628 |
* path, include the subdirectory, and append the suffix. */ |
629 |
strcpy(stradd(stradd(path, prefdir, DIRSEP), fname, 0), suffix); |
630 |
|
631 |
return(path); |
632 |
} |
633 |
|
634 |
/* filename - find the base file name in a buffer containing a path |
635 |
* |
636 |
* The pointer is to a character within the buffer, not a string in itself; |
637 |
* it will become invalid when the buffer is freed. |
638 |
* |
639 |
*/ |
640 |
char * |
641 |
filename( |
642 |
char *path |
643 |
) |
644 |
{ |
645 |
char *cp; |
646 |
|
647 |
for (cp = path; *path; path++) |
648 |
if (ISDIRSEP(*path)) |
649 |
cp = path+1; |
650 |
return(cp); |
651 |
} |
652 |
|
653 |
|
654 |
/* filetrunc() - return the directory portion of a path |
655 |
* |
656 |
* The path is passed in in a pointer to a buffer; a null character is |
657 |
* inserted in the buffer after the last directory separator |
658 |
* |
659 |
*/ |
660 |
char * |
661 |
filetrunc( |
662 |
char *path |
663 |
) |
664 |
{ |
665 |
char *p1, *p2; |
666 |
|
667 |
for (p1 = p2 = path; *p2; p2++) |
668 |
if (ISDIRSEP(*p2)) |
669 |
p1 = p2; |
670 |
if (p1 == path && ISDIRSEP(*p1)) |
671 |
p1++; |
672 |
*p1 = '\0'; |
673 |
return(path); |
674 |
} |
675 |
|
676 |
/* tailtrunc() - trim a file name extension, if any. |
677 |
* |
678 |
* The file name is passed in in a buffer indicated by *name; the |
679 |
* period which begins the extension is replaced with a 0 byte. |
680 |
*/ |
681 |
char * |
682 |
tailtrunc( |
683 |
char *name |
684 |
) |
685 |
{ |
686 |
char *p1, *p2; |
687 |
|
688 |
/* Skip leading periods */ |
689 |
for (p1 = filename(name); *p1 == '.'; p1++) |
690 |
; |
691 |
/* Find the last period in a file name */ |
692 |
p2 = NULL; |
693 |
for ( ; *p1; p1++) |
694 |
if (*p1 == '.') |
695 |
p2 = p1; |
696 |
/* If present, trim the filename at that period */ |
697 |
if (p2 != NULL) |
698 |
*p2 = '\0'; |
699 |
return(name); |
700 |
} |
701 |
|
702 |
/* blanktrunc() - trim spaces at the end of a string |
703 |
* |
704 |
* the string is passed in a character array, which is modified |
705 |
*/ |
706 |
void |
707 |
blanktrunc( |
708 |
char *s |
709 |
) |
710 |
{ |
711 |
char *cp; |
712 |
|
713 |
for (cp = s; *cp; cp++) |
714 |
; |
715 |
while (cp-- > s && isspace(*cp)) |
716 |
; |
717 |
*++cp = '\0'; |
718 |
} |
719 |
|
720 |
/* k_match - return true if keyword matches header line */ |
721 |
int |
722 |
k_match( |
723 |
char *kwd, /* keyword */ |
724 |
char *hdl /* header line */ |
725 |
) |
726 |
{ |
727 |
/* Skip leading spaces */ |
728 |
while (isspace(*hdl)) |
729 |
hdl++; |
730 |
/* The line has to begin with '[' */ |
731 |
if (*hdl++ != '[') |
732 |
return(0); |
733 |
/* case-independent keyword match */ |
734 |
while (toupper(*hdl) == *kwd++) |
735 |
if (!*hdl++) |
736 |
return(0); |
737 |
/* If we have come to the end of the keyword, and the keyword |
738 |
* at the beginning of the matched line is terminated with |
739 |
* ']', return 1 */ |
740 |
return(!kwd[-1] & (*hdl == ']')); |
741 |
} |
742 |
|
743 |
/* keyargs - return the argument of a keyword, without leading spaces |
744 |
* |
745 |
* keyargs is passed a pointer to a buffer; it returns a pointer to |
746 |
* where the argument starts in the buffer |
747 |
* |
748 |
*/ |
749 |
char * |
750 |
keyargs( |
751 |
char *hdl /* header line */ |
752 |
) |
753 |
{ |
754 |
while (*hdl && *hdl++ != ']') |
755 |
; |
756 |
while (isspace(*hdl)) |
757 |
hdl++; |
758 |
return(hdl); |
759 |
} |
760 |
|
761 |
|
762 |
/* putheader - output the header of the .rad file |
763 |
* |
764 |
* Header is: |
765 |
* # <file> <file> <file> (all files from input line) |
766 |
* # Dimensions in [feet,meters,etc.] |
767 |
* |
768 |
* ??? Is listing all the input file names correct behavior? |
769 |
* |
770 |
*/ |
771 |
void |
772 |
|
773 |
putheader( |
774 |
FILE *out |
775 |
) |
776 |
{ |
777 |
int i; |
778 |
|
779 |
putc('#', out); |
780 |
for (i = 0; i < gargc; i++) { |
781 |
putc(' ', out); |
782 |
fputs(gargv[i], out); |
783 |
} |
784 |
fputs("\n# Dimensions in ", out); |
785 |
fputs(units, out); |
786 |
putc('\n', out); |
787 |
} |
788 |
|
789 |
/* ies2rad - convert an IES LM-63 file to a Radiance light source desc. |
790 |
* |
791 |
* Return -1 in case of failure, 0 in case of success. |
792 |
* |
793 |
* The file version recognition is confused and will treat 1995 and |
794 |
* 2002 version files as 1986 version files. |
795 |
* |
796 |
*/ |
797 |
int |
798 |
ies2rad( /* convert IES file */ |
799 |
char *inpname, |
800 |
char *outname |
801 |
) |
802 |
{ |
803 |
SRCINFO srcinfo; |
804 |
char buf[MAXLINE], tltid[RMAXWORD]; |
805 |
char geomfile[128]; |
806 |
FILE *inpfp, *outfp; |
807 |
int lineno = 0; |
808 |
|
809 |
/* Open input and output files */ |
810 |
geomfile[0] = '\0'; |
811 |
srcinfo.isillum = 0; |
812 |
if (inpname == NULL) { |
813 |
inpname = "<stdin>"; |
814 |
inpfp = stdin; |
815 |
} else if ((inpfp = fopen(inpname, "r")) == NULL) { |
816 |
perror(inpname); |
817 |
return(-1); |
818 |
} |
819 |
if (out2stdout) |
820 |
outfp = stdout; |
821 |
else if ((outfp = fopen(fullnam(buf,outname,T_RAD), "w")) == NULL) { |
822 |
perror(buf); |
823 |
fclose(inpfp); |
824 |
return(-1); |
825 |
} |
826 |
|
827 |
/* Output the output file header */ |
828 |
putheader(outfp); |
829 |
|
830 |
/* If the lamp type wasn't given on the command line, mark |
831 |
* the lamp color as missing */ |
832 |
if (lamptype == NULL) |
833 |
lampcolor = NULL; |
834 |
|
835 |
/* Read the input file header, copying lines to the .rad file |
836 |
* and looking for a lamp type. Stop at EOF or a line |
837 |
* beginning with "TILT=". */ |
838 |
while (fgets(buf,sizeof(buf),inpfp) != NULL |
839 |
&& strncmp(buf,TLTSTR,TLTSTRLEN)) { |
840 |
blanktrunc(buf); /* Trim trailing spaces, CR, LF. */ |
841 |
if (!buf[0]) /* Skip blank lines */ |
842 |
continue; |
843 |
/* increment the header line count, and check for the |
844 |
* "TILT=" line that terminates the header */ |
845 |
if (!lineno++) { /* first line may be magic */ |
846 |
if (!strncmp(buf, MAGICID2, LMAGICID2)) |
847 |
filerev = atoi(buf+LMAGICID2) - 1900; |
848 |
else if (!strncmp(buf, MAGICID, LMAGICID)) |
849 |
filerev = atoi(buf+LMAGICID); |
850 |
if (filerev < FIRSTREV) |
851 |
filerev = FIRSTREV; |
852 |
else if (filerev > LASTREV) |
853 |
filerev = LASTREV; |
854 |
} |
855 |
/* Output the header line as a comment in the .rad file. */ |
856 |
fputs("#<", outfp); |
857 |
fputs(buf, outfp); |
858 |
putc('\n', outfp); |
859 |
|
860 |
/* If the header line is a keyword line (file version |
861 |
* later than 1986 and begins with '['), check a lamp |
862 |
* in the "[LAMP]" and "[LAMPCAT]" keyword lines; |
863 |
* otherwise check all lines. */ |
864 |
if (lampcolor == NULL && checklamp(buf)) |
865 |
lampcolor = matchlamp(*sskip2(buf,0) == '[' ? |
866 |
keyargs(buf) : buf ); |
867 |
/* Look for a materials and geometry file in the keywords. */ |
868 |
if (keymatch(K_LMG, buf)) { |
869 |
strcpy(geomfile, inpname); |
870 |
strcpy(filename(geomfile), keyargs(buf)); |
871 |
srcinfo.isillum = 1; |
872 |
} |
873 |
} |
874 |
|
875 |
/* Done reading header information. If a lamp color still |
876 |
* hasn't been found, print a warning and use the default |
877 |
* color; if a lamp type hasn't been found, but a color has |
878 |
* been specified, used the specified color. */ |
879 |
if (lampcolor == NULL) { |
880 |
fprintf(stderr, "%s: warning - no lamp type\n", inpname); |
881 |
fputs("# Unknown lamp type (used default)\n", outfp); |
882 |
lampcolor = defcolor; |
883 |
} else if (lamptype == NULL) |
884 |
fprintf(outfp,"# CIE(x,y) = (%f,%f)\n# Depreciation = %.1f%%\n", |
885 |
lampcolor[3], lampcolor[4], 100.*lampcolor[5]); |
886 |
|
887 |
/* If the file ended before a "TILT=" line, that's an error. */ |
888 |
if (feof(inpfp)) { |
889 |
fprintf(stderr, "%s: not in IES format\n", inpname); |
890 |
goto readerr; |
891 |
} |
892 |
|
893 |
/* Process the tilt section of the file. */ |
894 |
/* Get the tilt file name, or the keyword "INCLUDE". */ |
895 |
atos(tltid, RMAXWORD, buf+TLTSTRLEN); |
896 |
if (inpfp == stdin) |
897 |
buf[0] = '\0'; |
898 |
else |
899 |
filetrunc(strcpy(buf, inpname)); |
900 |
/* Process the tilt data. */ |
901 |
if (dotilt(inpfp, outfp, buf, tltid, outname, tltid) != 0) { |
902 |
fprintf(stderr, "%s: bad tilt data\n", inpname); |
903 |
goto readerr; |
904 |
} |
905 |
|
906 |
/* Process the luminaire data. */ |
907 |
if (dosource(&srcinfo, inpfp, outfp, tltid, outname) != 0) { |
908 |
fprintf(stderr, "%s: bad luminaire data\n", inpname); |
909 |
goto readerr; |
910 |
} |
911 |
|
912 |
/* Close the input file */ |
913 |
fclose(inpfp); |
914 |
|
915 |
/* Process an MGF file, if present. cvgeometry() closes outfp. */ |
916 |
if (cvgeometry(geomfile, &srcinfo, outname, outfp) != 0) { |
917 |
fprintf(stderr, "%s: bad geometry file\n", geomfile); |
918 |
return(-1); |
919 |
} |
920 |
return(0); |
921 |
|
922 |
readerr: |
923 |
/* If there is an error reading the file, close the input and |
924 |
* .rad output files, and delete the .rad file, returning -1. */ |
925 |
fclose(inpfp); |
926 |
fclose(outfp); |
927 |
unlink(fullnam(buf,outname,T_RAD)); |
928 |
return(-1); |
929 |
} |
930 |
|
931 |
/* dotilt -- process tilt data |
932 |
* |
933 |
* Generate a brightdata primitive which describes the effect of |
934 |
* luminaire tilt on luminaire output and return its identifier in tltid. |
935 |
* |
936 |
* Tilt data (if present) is given as a number 1, 2, or 3, which |
937 |
* specifies the orientation of the lamp within the luminaire, a |
938 |
* number, n, of (angle, multiplier) pairs, followed by n angles and n |
939 |
* multipliers. |
940 |
* |
941 |
* returns 0 for success, -1 for error |
942 |
*/ |
943 |
int |
944 |
dotilt( |
945 |
FILE *in, |
946 |
FILE *out, |
947 |
char *dir, |
948 |
char *tltspec, |
949 |
char *dfltname, |
950 |
char *tltid |
951 |
) |
952 |
{ |
953 |
int nangles, tlt_type; |
954 |
double minmax[1][2]; |
955 |
char buf[PATH_MAX], tltname[RMAXWORD]; |
956 |
FILE *datin, *datout; |
957 |
|
958 |
/* Decide where the tilt data is; if the luminaire description |
959 |
* doesn't have a tilt section, set the identifier to "void". */ |
960 |
if (!strcmp(tltspec, TLTNONE)) { |
961 |
/* If the line is "TILT=NONE", set the input file |
962 |
* pointer to NULL and the identifier to "void". */ |
963 |
datin = NULL; |
964 |
strcpy(tltid, "void"); |
965 |
} else if (!strcmp(tltspec, TLTINCL)) { |
966 |
/* If the line is "TILT=INCLUDE" use the main IES |
967 |
* file as the source of tilt data. */ |
968 |
datin = in; |
969 |
strcpy(tltname, dfltname); |
970 |
} else { |
971 |
/* If the line is "TILE=<filename>", use that file |
972 |
* name as the source of tilt data. */ |
973 |
if (ISDIRSEP(tltspec[0])) |
974 |
strcpy(buf, tltspec); |
975 |
else |
976 |
strcpy(stradd(buf, dir, DIRSEP), tltspec); |
977 |
if ((datin = fopen(buf, "r")) == NULL) { |
978 |
perror(buf); |
979 |
return(-1); |
980 |
} |
981 |
tailtrunc(strcpy(tltname,filename(tltspec))); |
982 |
} |
983 |
/* If tilt data is present, read, process, and output it. */ |
984 |
if (datin != NULL) { |
985 |
/* Try to open the output file */ |
986 |
if ((datout = fopen(fullnam(buf,tltname,T_TLT),"w")) == NULL) { |
987 |
perror(buf); |
988 |
if (datin != in) |
989 |
fclose(datin); |
990 |
return(-1); |
991 |
} |
992 |
/* Try to copy the tilt data to the tilt data file */ |
993 |
if (!scnint(datin,&tlt_type) || !scnint(datin,&nangles) |
994 |
|| cvdata(datin,datout,1,&nangles,1.,minmax) != 0) { |
995 |
fprintf(stderr, "%s: data format error\n", tltspec); |
996 |
fclose(datout); |
997 |
if (datin != in) |
998 |
fclose(datin); |
999 |
unlink(fullnam(buf,tltname,T_TLT)); |
1000 |
return(-1); |
1001 |
} |
1002 |
fclose(datout); |
1003 |
if (datin != in) |
1004 |
fclose(datin); |
1005 |
|
1006 |
/* Generate the identifier of the brightdata; the filename |
1007 |
* with "_tilt" appended. */ |
1008 |
strcat(strcpy(tltid, filename(tltname)), "_tilt"); |
1009 |
/* Write out the brightdata primitive */ |
1010 |
fprintf(out, "\nvoid brightdata %s\n", tltid); |
1011 |
libname(buf,tltname,T_TLT); |
1012 |
/* Generate the tilt description */ |
1013 |
switch (tlt_type) { |
1014 |
case TLT_VERT: |
1015 |
/* The lamp is mounted vertically; either |
1016 |
* base up or base down. */ |
1017 |
fprintf(out, "4 noop %s tilt.cal %s\n", buf, |
1018 |
minmax[0][1]>90.+FTINY ? "tilt_ang" : "tilt_ang2"); |
1019 |
break; |
1020 |
case TLT_H0: |
1021 |
/* The lamp is mounted horizontally and |
1022 |
* rotates but does not tilt when the |
1023 |
* luminaire is tilted. */ |
1024 |
fprintf(out, "6 noop %s tilt.cal %s -rz 90\n", buf, |
1025 |
minmax[0][1]>90.+FTINY ? "tilt_xang" : "tilt_xang2"); |
1026 |
break; |
1027 |
case TLT_H90: |
1028 |
/* The lamp is mounted horizontally, and |
1029 |
* tilts when the luminaire is tilted. */ |
1030 |
fprintf(out, "4 noop %s tilt.cal %s\n", buf, |
1031 |
minmax[0][1]>90.+FTINY ? "tilt_xang" : "tilt_xang2"); |
1032 |
break; |
1033 |
default: |
1034 |
/* otherwise, this is a bad IES file */ |
1035 |
fprintf(stderr, |
1036 |
"%s: illegal lamp to luminaire geometry (%d)\n", |
1037 |
tltspec, tlt_type); |
1038 |
return(-1); |
1039 |
} |
1040 |
/* And finally output the numbers of integer and real |
1041 |
* arguments, of which there are none. */ |
1042 |
fprintf(out, "0\n0\n"); |
1043 |
} |
1044 |
return(0); |
1045 |
} |
1046 |
|
1047 |
/* dosource -- create the source and distribution primitives */ |
1048 |
int |
1049 |
dosource( |
1050 |
SRCINFO *sinf, |
1051 |
FILE *in, |
1052 |
FILE *out, |
1053 |
char *mod, |
1054 |
char *name |
1055 |
) |
1056 |
{ |
1057 |
char buf[PATH_MAX], id[RMAXWORD]; |
1058 |
FILE *datout; |
1059 |
double mult, bfactor, pfactor, width, length, height, wattage; |
1060 |
double bounds[2][2]; |
1061 |
int nangles[2], pmtype, unitype; |
1062 |
double d1; |
1063 |
int doupper, dolower, dosides; |
1064 |
|
1065 |
/* Read in the luminaire description header */ |
1066 |
if (!isint(getword(in)) || !isflt(getword(in)) || !scnflt(in,&mult) |
1067 |
|| !scnint(in,&nangles[0]) || !scnint(in,&nangles[1]) |
1068 |
|| !scnint(in,&pmtype) || !scnint(in,&unitype) |
1069 |
|| !scnflt(in,&width) || !scnflt(in,&length) |
1070 |
|| !scnflt(in,&height) || !scnflt(in,&bfactor) |
1071 |
|| !scnflt(in,&pfactor) || !scnflt(in,&wattage)) { |
1072 |
fprintf(stderr, "dosource: bad lamp specification\n"); |
1073 |
return(-1); |
1074 |
} |
1075 |
/* Type A photometry is not supported */ |
1076 |
if (pmtype != PM_C && pmtype != PM_B) { |
1077 |
fprintf(stderr, "dosource: unsupported photometric type (%d)\n", |
1078 |
pmtype); |
1079 |
return(-1); |
1080 |
} |
1081 |
|
1082 |
/* Multiplier = the multiplier from the -m option, times the |
1083 |
* multiplier from the IES file, times the ballast factor, |
1084 |
* times the "ballast lamp photometric factor," which was part |
1085 |
* of the 1986 and 1991 standards. In the 1995 standard, it is |
1086 |
* always supposed to be 1. */ |
1087 |
sinf->mult = multiplier*mult*bfactor*pfactor; |
1088 |
|
1089 |
/* If the count of angles is wrong, raise an error and quit. */ |
1090 |
if (nangles[0] < 2 || nangles[1] < 1) { |
1091 |
fprintf(stderr, "dosource: too few measured angles\n"); |
1092 |
return(-1); |
1093 |
} |
1094 |
|
1095 |
/* For internal computation, convert units to meters. */ |
1096 |
if (unitype == U_FEET) { |
1097 |
width *= F_M; |
1098 |
length *= F_M; |
1099 |
height *= F_M; |
1100 |
} |
1101 |
|
1102 |
/* Make decisions about the shape of the light source |
1103 |
* geometry, and store them in sinf. */ |
1104 |
if (makeshape(sinf, width, length, height) != 0) { |
1105 |
fprintf(stderr, "dosource: illegal source dimensions"); |
1106 |
return(-1); |
1107 |
} |
1108 |
|
1109 |
/* Copy the candela values into a Radiance data file. */ |
1110 |
if ((datout = fopen(fullnam(buf,name,T_DST), "w")) == NULL) { |
1111 |
perror(buf); |
1112 |
return(-1); |
1113 |
} |
1114 |
if (cvdata(in, datout, 2, nangles, 1./WHTEFFICACY, bounds) != 0) { |
1115 |
fprintf(stderr, "dosource: bad distribution data\n"); |
1116 |
fclose(datout); |
1117 |
unlink(fullnam(buf,name,T_DST)); |
1118 |
return(-1); |
1119 |
} |
1120 |
fclose(datout); |
1121 |
|
1122 |
/* Output explanatory comment */ |
1123 |
fprintf(out, "# %g watt luminaire, lamp*ballast factor = %g\n", |
1124 |
wattage, bfactor*pfactor); |
1125 |
/* Output distribution "brightdata" primitive. Start handling |
1126 |
the various cases of symmetry of the distribution. */ |
1127 |
strcat(strcpy(id, filename(name)), "_dist"); |
1128 |
fprintf(out, "\n%s brightdata %s\n", mod, id); |
1129 |
if (nangles[1] < 2) |
1130 |
fprintf(out, "4 "); |
1131 |
else if (pmtype == PM_B) |
1132 |
fprintf(out, "5 "); |
1133 |
else if (FEQ(bounds[1][0],90.) && FEQ(bounds[1][1],270.)) |
1134 |
fprintf(out, "7 "); |
1135 |
else |
1136 |
fprintf(out, "5 "); |
1137 |
|
1138 |
/* If the generated source geometry will be a box, a flat |
1139 |
* rectangle, or a disk figure out if it needs a top, a |
1140 |
* bottom, and/or sides. */ |
1141 |
dolower = (bounds[0][0] < 90.-FTINY); /* Bottom */ |
1142 |
doupper = (bounds[0][1] > 90.+FTINY); /* Top */ |
1143 |
dosides = (doupper & dolower && sinf->h > MINDIM); /* Sides */ |
1144 |
|
1145 |
/* Select the appropriate function and parameters from source.cal */ |
1146 |
fprintf(out, "%s %s source.cal ", |
1147 |
sinf->type==SPHERE ? "corr" : |
1148 |
!dosides ? "flatcorr" : |
1149 |
sinf->type==DISK ? "cylcorr" : "boxcorr", |
1150 |
libname(buf,name,T_DST)); |
1151 |
if (pmtype == PM_B) { |
1152 |
if (FEQ(bounds[1][0],0.)) |
1153 |
fprintf(out, "srcB_horiz2 "); |
1154 |
else |
1155 |
fprintf(out, "srcB_horiz "); |
1156 |
fprintf(out, "srcB_vert "); |
1157 |
} else /* pmtype == PM_C */ { |
1158 |
if (nangles[1] >= 2) { |
1159 |
d1 = bounds[1][1] - bounds[1][0]; |
1160 |
if (d1 <= 90.+FTINY) |
1161 |
fprintf(out, "src_phi4 "); |
1162 |
else if (d1 <= 180.+FTINY) { |
1163 |
if (FEQ(bounds[1][0],90.)) |
1164 |
fprintf(out, "src_phi2+90 "); |
1165 |
else |
1166 |
fprintf(out, "src_phi2 "); |
1167 |
} else |
1168 |
fprintf(out, "src_phi "); |
1169 |
fprintf(out, "src_theta "); |
1170 |
if (FEQ(bounds[1][0],90.) && FEQ(bounds[1][1],270.)) |
1171 |
fprintf(out, "-rz -90 "); |
1172 |
} else |
1173 |
fprintf(out, "src_theta "); |
1174 |
} |
1175 |
/* finish the brightdata primitive with appropriate data */ |
1176 |
if (!dosides || sinf->type == SPHERE) |
1177 |
fprintf(out, "\n0\n1 %g\n", sinf->mult/sinf->area); |
1178 |
else if (sinf->type == DISK) |
1179 |
fprintf(out, "\n0\n3 %g %g %g\n", sinf->mult, |
1180 |
sinf->w, sinf->h); |
1181 |
else |
1182 |
fprintf(out, "\n0\n4 %g %g %g %g\n", sinf->mult, |
1183 |
sinf->l, sinf->w, sinf->h); |
1184 |
/* Brightdata primitive written out. */ |
1185 |
|
1186 |
/* Finally, output the descriptions of the actual radiant |
1187 |
* surfaces. */ |
1188 |
if (putsource(sinf, out, id, filename(name), |
1189 |
dolower, doupper, dosides) != 0) |
1190 |
return(-1); |
1191 |
return(0); |
1192 |
} |
1193 |
|
1194 |
/* putsource - output the actual light emitting geometry |
1195 |
* |
1196 |
* Three kinds of geometry are produced: rectangles and boxes, disks |
1197 |
* ("ring" primitive, but the radius of the hole is always zero) and |
1198 |
* cylinders, and spheres. |
1199 |
*/ |
1200 |
int |
1201 |
putsource( |
1202 |
SRCINFO *shp, |
1203 |
FILE *fp, |
1204 |
char *mod, |
1205 |
char *name, |
1206 |
int dolower, |
1207 |
int doupper, |
1208 |
int dosides |
1209 |
) |
1210 |
{ |
1211 |
char lname[RMAXWORD]; |
1212 |
|
1213 |
/* First, describe the light. If a materials and geometry |
1214 |
* file is given, generate an illum instead. */ |
1215 |
strcat(strcpy(lname, name), "_light"); |
1216 |
fprintf(fp, "\n%s %s %s\n", mod, |
1217 |
shp->isillum ? "illum" : "light", lname); |
1218 |
fprintf(fp, "0\n0\n3 %g %g %g\n", |
1219 |
lampcolor[0], lampcolor[1], lampcolor[2]); |
1220 |
switch (shp->type) { |
1221 |
case RECT: |
1222 |
/* Output at least one rectangle. If light is radiated |
1223 |
* from the sides of the luminaire, output rectangular |
1224 |
* sides as well. */ |
1225 |
if (dolower) |
1226 |
putrectsrc(shp, fp, lname, name, 0); |
1227 |
if (doupper) |
1228 |
putrectsrc(shp, fp, lname, name, 1); |
1229 |
if (dosides) |
1230 |
putsides(shp, fp, lname, name); |
1231 |
break; |
1232 |
case DISK: |
1233 |
/* Output at least one disk. If light is radiated from |
1234 |
* the sides of luminaire, output a cylinder as well. */ |
1235 |
if (dolower) |
1236 |
putdisksrc(shp, fp, lname, name, 0); |
1237 |
if (doupper) |
1238 |
putdisksrc(shp, fp, lname, name, 1); |
1239 |
if (dosides) |
1240 |
putcyl(shp, fp, lname, name); |
1241 |
break; |
1242 |
case SPHERE: |
1243 |
/* Output a sphere. */ |
1244 |
putspheresrc(shp, fp, lname, name); |
1245 |
break; |
1246 |
} |
1247 |
return(0); |
1248 |
} |
1249 |
|
1250 |
/* makeshape -- decide what shape will be used |
1251 |
* |
1252 |
* makeshape decides what Radiance geometry will be used to represent |
1253 |
* the light source and stores information about it in shp. |
1254 |
*/ |
1255 |
int |
1256 |
makeshape( |
1257 |
SRCINFO *shp, |
1258 |
double width, |
1259 |
double length, |
1260 |
double height |
1261 |
) |
1262 |
{ |
1263 |
/* Categorize the shape */ |
1264 |
if (illumrad/meters2out >= MINDIM/2.) { |
1265 |
/* If the -i command line option is used, and the |
1266 |
* object is not a point source, output an "illum" |
1267 |
* sphere */ |
1268 |
shp->isillum = 1; |
1269 |
shp->type = SPHERE; |
1270 |
shp->w = shp->l = shp->h = 2.*illumrad / meters2out; |
1271 |
} else if (width < MINDIM) { |
1272 |
/* The width is either zero or negative. */ |
1273 |
width = -width; |
1274 |
if (width < MINDIM) { |
1275 |
/* The width is zero. Use a tiny sphere to |
1276 |
* represent a point source. */ |
1277 |
shp->type = SPHERE; |
1278 |
shp->w = shp->l = shp->h = MINDIM; |
1279 |
} else if (height < .5*width) { |
1280 |
/* The width is negative and the height is |
1281 |
* modest; output either a disk or a thin |
1282 |
* vertical cylinder. */ |
1283 |
shp->type = DISK; |
1284 |
shp->w = shp->l = width; |
1285 |
if (height >= MINDIM) |
1286 |
shp->h = height; |
1287 |
else |
1288 |
shp->h = .5*MINDIM; |
1289 |
} else { |
1290 |
/* The width is negative and the object is |
1291 |
* tall; output a sphere. */ |
1292 |
shp->type = SPHERE; |
1293 |
shp->w = shp->l = shp->h = width; |
1294 |
} |
1295 |
} else { |
1296 |
/* The width is positive. Output a box, possibly very |
1297 |
* thin. */ |
1298 |
shp->type = RECT; |
1299 |
shp->w = width; |
1300 |
if (length >= MINDIM) |
1301 |
shp->l = length; |
1302 |
else |
1303 |
shp->l = MINDIM; |
1304 |
if (height >= MINDIM) |
1305 |
shp->h = height; |
1306 |
else |
1307 |
shp->h = .5*MINDIM; |
1308 |
} |
1309 |
|
1310 |
/* Done choosing the shape; calculate its area in the x-y plane. */ |
1311 |
switch (shp->type) { |
1312 |
case RECT: |
1313 |
shp->area = shp->w * shp->l; |
1314 |
break; |
1315 |
case DISK: |
1316 |
case SPHERE: |
1317 |
shp->area = PI/4. * shp->w * shp->w; |
1318 |
break; |
1319 |
} |
1320 |
return(0); |
1321 |
} |
1322 |
|
1323 |
/* Rectangular or box-shaped light source. |
1324 |
* |
1325 |
* putrectsrc, putsides, putrect, and putpoint are used to output the |
1326 |
* Radiance description of a box. The box is centered on the origin |
1327 |
* and has the dimensions given in the IES file. The coordinates |
1328 |
* range from [-1/2*length, -1/2*width, -1/2*height] to [1/2*length, |
1329 |
* 1/2*width, 1/2*height]. |
1330 |
* |
1331 |
* The location of the point is encoded in the low-order three bits of |
1332 |
* an integer. If the integer is p, then: bit 0 is (p & 1), |
1333 |
* representing length (x), bit 1 is (p & 2) representing width (y), |
1334 |
* and bit 2 is (p & 4), representing height (z). |
1335 |
* |
1336 |
* Looking down from above (towards -z), the vertices of the box or |
1337 |
* rectangle are numbered so: |
1338 |
* |
1339 |
* 2,6 3,7 |
1340 |
* +--------------------------------------+ |
1341 |
* | | |
1342 |
* | | |
1343 |
* | | |
1344 |
* | | |
1345 |
* +--------------------------------------+ |
1346 |
* 0,4 1,5 |
1347 |
* |
1348 |
* The higher number of each pair is above the x-y plane (positive z), |
1349 |
* the lower number is below the x-y plane (negative z.) |
1350 |
* |
1351 |
*/ |
1352 |
|
1353 |
/* putrecsrc - output a rectangle parallel to the x-y plane |
1354 |
* |
1355 |
* Putrecsrc calls out the vertices of a rectangle parallel to the x-y |
1356 |
* plane. The order of the vertices is different for the upper and |
1357 |
* lower rectangles of a box, since a right-hand rule based on the |
1358 |
* order of the vertices is used to determine the surface normal of |
1359 |
* the rectangle, and the surface normal determines the direction the |
1360 |
* light radiated by the rectangle. |
1361 |
* |
1362 |
*/ |
1363 |
void |
1364 |
putrectsrc( |
1365 |
SRCINFO *shp, |
1366 |
FILE *fp, |
1367 |
char *mod, |
1368 |
char *name, |
1369 |
int up |
1370 |
) |
1371 |
{ |
1372 |
if (up) |
1373 |
putrect(shp, fp, mod, name, ".u", 4, 5, 7, 6); |
1374 |
else |
1375 |
putrect(shp, fp, mod, name, ".d", 0, 2, 3, 1); |
1376 |
} |
1377 |
|
1378 |
/* putsides - put out sides of box */ |
1379 |
void |
1380 |
putsides( |
1381 |
SRCINFO *shp, |
1382 |
FILE *fp, |
1383 |
char *mod, |
1384 |
char *name |
1385 |
) |
1386 |
{ |
1387 |
putrect(shp, fp, mod, name, ".1", 0, 1, 5, 4); |
1388 |
putrect(shp, fp, mod, name, ".2", 1, 3, 7, 5); |
1389 |
putrect(shp, fp, mod, name, ".3", 3, 2, 6, 7); |
1390 |
putrect(shp, fp, mod, name, ".4", 2, 0, 4, 6); |
1391 |
} |
1392 |
|
1393 |
/* putrect - put out a rectangle |
1394 |
* |
1395 |
* putrect generates the "polygon" primitive which describes a |
1396 |
* rectangle. |
1397 |
*/ |
1398 |
void |
1399 |
putrect( |
1400 |
SRCINFO *shp, |
1401 |
FILE *fp, |
1402 |
char *mod, |
1403 |
char *name, |
1404 |
char *suffix, |
1405 |
int a, |
1406 |
int b, |
1407 |
int c, |
1408 |
int d |
1409 |
) |
1410 |
{ |
1411 |
fprintf(fp, "\n%s polygon %s%s\n0\n0\n12\n", mod, name, suffix); |
1412 |
putpoint(shp, fp, a); |
1413 |
putpoint(shp, fp, b); |
1414 |
putpoint(shp, fp, c); |
1415 |
putpoint(shp, fp, d); |
1416 |
} |
1417 |
|
1418 |
/* putpoint -- output a the coordinates of a vertex |
1419 |
* |
1420 |
* putpoint maps vertex numbers to coordinates and outputs the |
1421 |
* coordinates. |
1422 |
*/ |
1423 |
void |
1424 |
putpoint( |
1425 |
SRCINFO *shp, |
1426 |
FILE *fp, |
1427 |
int p |
1428 |
) |
1429 |
{ |
1430 |
static double mult[2] = {-.5, .5}; |
1431 |
|
1432 |
fprintf(fp, "\t%g\t%g\t%g\n", |
1433 |
mult[p&1]*shp->l*meters2out, |
1434 |
mult[p>>1&1]*shp->w*meters2out, |
1435 |
mult[p>>2]*shp->h*meters2out); |
1436 |
} |
1437 |
|
1438 |
/* End of routines to output a box-shaped light source */ |
1439 |
|
1440 |
/* Routines to output a cylindrical or disk shaped light source |
1441 |
* |
1442 |
* As with other shapes, the light source is centered on the origin. |
1443 |
* The "ring" and "cylinder" primitives are used. |
1444 |
* |
1445 |
*/ |
1446 |
void |
1447 |
putdisksrc( /* put out a disk source */ |
1448 |
SRCINFO *shp, |
1449 |
FILE *fp, |
1450 |
char *mod, |
1451 |
char *name, |
1452 |
int up |
1453 |
) |
1454 |
{ |
1455 |
if (up) { |
1456 |
fprintf(fp, "\n%s ring %s.u\n", mod, name); |
1457 |
fprintf(fp, "0\n0\n8\n"); |
1458 |
fprintf(fp, "\t0 0 %g\n", .5*shp->h*meters2out); |
1459 |
fprintf(fp, "\t0 0 1\n"); |
1460 |
fprintf(fp, "\t0 %g\n", .5*shp->w*meters2out); |
1461 |
} else { |
1462 |
fprintf(fp, "\n%s ring %s.d\n", mod, name); |
1463 |
fprintf(fp, "0\n0\n8\n"); |
1464 |
fprintf(fp, "\t0 0 %g\n", -.5*shp->h*meters2out); |
1465 |
fprintf(fp, "\t0 0 -1\n"); |
1466 |
fprintf(fp, "\t0 %g\n", .5*shp->w*meters2out); |
1467 |
} |
1468 |
} |
1469 |
|
1470 |
|
1471 |
void |
1472 |
putcyl( /* put out a cylinder */ |
1473 |
SRCINFO *shp, |
1474 |
FILE *fp, |
1475 |
char *mod, |
1476 |
char *name |
1477 |
) |
1478 |
{ |
1479 |
fprintf(fp, "\n%s cylinder %s.c\n", mod, name); |
1480 |
fprintf(fp, "0\n0\n7\n"); |
1481 |
fprintf(fp, "\t0 0 %g\n", .5*shp->h*meters2out); |
1482 |
fprintf(fp, "\t0 0 %g\n", -.5*shp->h*meters2out); |
1483 |
fprintf(fp, "\t%g\n", .5*shp->w*meters2out); |
1484 |
} |
1485 |
|
1486 |
/* end of of routines to output cylinders and disks */ |
1487 |
|
1488 |
void |
1489 |
putspheresrc( /* put out a sphere source */ |
1490 |
SRCINFO *shp, |
1491 |
FILE *fp, |
1492 |
char *mod, |
1493 |
char *name |
1494 |
) |
1495 |
{ |
1496 |
fprintf(fp, "\n%s sphere %s.s\n", mod, name); |
1497 |
fprintf(fp, "0\n0\n4 0 0 0 %g\n", .5*shp->w*meters2out); |
1498 |
} |
1499 |
|
1500 |
/* cvdata - convert LM-63 tilt and candela data to Radiance brightdata format |
1501 |
* |
1502 |
* The files created by this routine are intended for use with the Radiance |
1503 |
* "brightdata" material type. |
1504 |
* |
1505 |
* Two types of data are converted; one-dimensional tilt data, which |
1506 |
* is given in polar coordinates, and two-dimensional candela data, |
1507 |
* which is given in spherical co-ordinates. |
1508 |
* |
1509 |
* Return 0 for success, -1 for failure. |
1510 |
* |
1511 |
*/ |
1512 |
int |
1513 |
cvdata( |
1514 |
FILE *in, /* Input file */ |
1515 |
FILE *out, /* Output file */ |
1516 |
int ndim, /* Number of dimensions; 1 for |
1517 |
* tilt data, 2 for photometric data. */ |
1518 |
int npts[], /* Number of points in each dimension */ |
1519 |
double mult, /* Multiple each value by this |
1520 |
* number. For tilt data, always |
1521 |
* 1. For candela values, the |
1522 |
* efficacy of white Radiance light. */ |
1523 |
double lim[][2] /* The range of angles in each dimension. */ |
1524 |
) |
1525 |
{ |
1526 |
double *pt[4]; /* Four is the expected maximum of ndim. */ |
1527 |
int i, j; |
1528 |
double val; |
1529 |
int total; |
1530 |
|
1531 |
/* Calculate and output the number of data values */ |
1532 |
total = 1; j = 0; |
1533 |
for (i = 0; i < ndim; i++) |
1534 |
if (npts[i] > 1) { |
1535 |
total *= npts[i]; |
1536 |
j++; |
1537 |
} |
1538 |
fprintf(out, "%d\n", j); |
1539 |
|
1540 |
/* Read in the angle values, and note the first and last in |
1541 |
* each dimension, if there is a place to store them. In the |
1542 |
* case of tilt data, there is only one list of angles. In the |
1543 |
* case of candela values, vertical angles appear first, and |
1544 |
* horizontal angles occur second. */ |
1545 |
for (i = 0; i < ndim; i++) { |
1546 |
/* Allocate space for the angle values. */ |
1547 |
pt[i] = (double *)malloc(npts[i]*sizeof(double)); |
1548 |
for (j = 0; j < npts[i]; j++) |
1549 |
if (!scnflt(in, &pt[i][j])) |
1550 |
return(-1); |
1551 |
if (lim != NULL) { |
1552 |
lim[i][0] = pt[i][0]; |
1553 |
lim[i][1] = pt[i][npts[i]-1]; |
1554 |
} |
1555 |
} |
1556 |
|
1557 |
/* Output the angles. If this is candela data, horizontal |
1558 |
* angles output first. There are two cases: the first where |
1559 |
* the angles are evenly spaced, the second where they are |
1560 |
* not. |
1561 |
* |
1562 |
* When the angles are evenly spaced, three numbers are |
1563 |
* output: the first angle, the last angle, and the number of |
1564 |
* angles. When the angles are not evenly spaced, instead |
1565 |
* zero, zero, and the count of angles is given, followed by a |
1566 |
* list of angles. In this case, angles are output four to a line. |
1567 |
*/ |
1568 |
for (i = ndim-1; i >= 0; i--) { |
1569 |
if (npts[i] > 1) { |
1570 |
/* Determine if the angles are evenly spaces */ |
1571 |
for (j = 1; j < npts[i]-1; j++) |
1572 |
if (!FEQ(pt[i][j]-pt[i][j-1], |
1573 |
pt[i][j+1]-pt[i][j])) |
1574 |
break; |
1575 |
/* If they are, output the first angle, the |
1576 |
* last angle, and a count */ |
1577 |
if (j == npts[i]-1) |
1578 |
fprintf(out, "%g %g %d\n", pt[i][0], pt[i][j], |
1579 |
npts[i]); |
1580 |
else { |
1581 |
/* otherwise, output 0, 0, and a |
1582 |
* count, followed by the list of |
1583 |
* angles, one to a line. */ |
1584 |
fprintf(out, "0 0 %d", npts[i]); |
1585 |
for (j = 0; j < npts[i]; j++) { |
1586 |
if (j%4 == 0) |
1587 |
putc('\n', out); |
1588 |
fprintf(out, "\t%g", pt[i][j]); |
1589 |
} |
1590 |
putc('\n', out); |
1591 |
} |
1592 |
} |
1593 |
/* Free the storage containing the angle values. */ |
1594 |
free((void *)pt[i]); |
1595 |
} |
1596 |
|
1597 |
/* Finally, read in the data values (candela or multiplier values, |
1598 |
* depending on the part of the file) and output them four to |
1599 |
* a line. */ |
1600 |
for (i = 0; i < total; i++) { |
1601 |
if (i%4 == 0) |
1602 |
putc('\n', out); |
1603 |
if (!scnflt(in, &val)) |
1604 |
return(-1); |
1605 |
fprintf(out, "\t%g", val*mult); |
1606 |
} |
1607 |
putc('\n', out); |
1608 |
return(0); |
1609 |
} |
1610 |
|
1611 |
/* getword - get an LM-63 delimited word from fp |
1612 |
* |
1613 |
* Getword gets a word from an IES file delimited by either white |
1614 |
* space or a comma surrounded by white space. A pointer to the word |
1615 |
* is returned, which will persist only until getword is called again. |
1616 |
* At EOF, return NULL instead. |
1617 |
* |
1618 |
*/ |
1619 |
char * |
1620 |
getword( /* scan a word from fp */ |
1621 |
FILE *fp |
1622 |
) |
1623 |
{ |
1624 |
static char wrd[RMAXWORD]; |
1625 |
char *cp; |
1626 |
int c; |
1627 |
|
1628 |
/* Skip initial spaces */ |
1629 |
while (isspace(c=getc(fp))) |
1630 |
; |
1631 |
/* Get characters to a delimiter or until wrd is full */ |
1632 |
for (cp = wrd; c != EOF && cp < wrd+RMAXWORD-1; |
1633 |
*cp++ = c, c = getc(fp)) |
1634 |
if (isspace(c) || c == ',') { |
1635 |
/* If we find a delimiter */ |
1636 |
/* Gobble up whitespace */ |
1637 |
while (isspace(c)) |
1638 |
c = getc(fp); |
1639 |
/* If it's not a comma, put the first |
1640 |
* character of the next data item back */ |
1641 |
if ((c != EOF) & (c != ',')) |
1642 |
ungetc(c, fp); |
1643 |
/* Close out the strimg */ |
1644 |
*cp = '\0'; |
1645 |
/* return it */ |
1646 |
return(wrd); |
1647 |
} |
1648 |
/* If we ran out of space or are at the end of the file, |
1649 |
* return either the word or NULL, as appropriate. */ |
1650 |
*cp = '\0'; |
1651 |
return(cp > wrd ? wrd : NULL); |
1652 |
} |
1653 |
|
1654 |
/* cvtint - convert an IES word to an integer |
1655 |
* |
1656 |
* A pointer to the word is passed in wrd; ip is expected to point to |
1657 |
* an integer. cvtint() will silently truncate a floating point value |
1658 |
* to an integer; "1", "1.0", and "1.5" will all return 1. |
1659 |
* |
1660 |
* cvtint() returns 0 if it fails, 1 if it succeeds. |
1661 |
*/ |
1662 |
int |
1663 |
cvtint( |
1664 |
int *ip, |
1665 |
char *wrd |
1666 |
) |
1667 |
{ |
1668 |
if (wrd == NULL || !isint(wrd)) |
1669 |
return(0); |
1670 |
*ip = atoi(wrd); |
1671 |
return(1); |
1672 |
} |
1673 |
|
1674 |
|
1675 |
/* cvtflt - convert an IES word to a double precision floating-point number |
1676 |
* |
1677 |
* A pointer to the word is passed in wrd; rp is expected to point to |
1678 |
* a double. |
1679 |
* |
1680 |
* cvtflt returns 0 if it fails, 1 if it succeeds. |
1681 |
*/ |
1682 |
int |
1683 |
cvtflt( |
1684 |
double *rp, |
1685 |
char *wrd |
1686 |
) |
1687 |
{ |
1688 |
if (wrd == NULL || !isflt(wrd)) |
1689 |
return(0); |
1690 |
*rp = atof(wrd); |
1691 |
return(1); |
1692 |
} |
1693 |
|
1694 |
/* cvgeometry - process materials and geometry format luminaire data |
1695 |
* |
1696 |
* The materials and geometry format (MGF) for describing luminaires |
1697 |
* was a part of Radiance that was first adopted and then retracted by |
1698 |
* the IES as part of LM-63. It provides a way of describing |
1699 |
* luminaire geometry similar to the Radiance scene description |
1700 |
* format. |
1701 |
* |
1702 |
* cvgeometry() generates an mgf2rad command and then, if "-g" is given |
1703 |
* on the command line, an oconv command, both of which are then |
1704 |
* executed with the system() function. |
1705 |
* |
1706 |
* The generated commands are: |
1707 |
* mgf2rad -e <multiplier> -g <size> <mgf_filename> \ |
1708 |
* | xform -s <scale_factor> \ |
1709 |
* >> <luminare_scene_description_file |
1710 |
* or: |
1711 |
* mgf2rad -e <multiplier> -g <size> <mgf_filename> \ |
1712 |
* oconv - > <instance_filename> |
1713 |
*/ |
1714 |
int |
1715 |
cvgeometry( |
1716 |
char *inpname, |
1717 |
SRCINFO *sinf, |
1718 |
char *outname, |
1719 |
FILE *outfp /* close output file upon return */ |
1720 |
) |
1721 |
{ |
1722 |
char buf[256]; |
1723 |
char *cp; |
1724 |
|
1725 |
if (inpname == NULL || !inpname[0]) { /* no geometry file */ |
1726 |
fclose(outfp); |
1727 |
return(0); |
1728 |
} |
1729 |
putc('\n', outfp); |
1730 |
strcpy(buf, "mgf2rad "); /* build mgf2rad command */ |
1731 |
cp = buf+8; |
1732 |
if (!FEQ(sinf->mult, 1.0)) { |
1733 |
/* if there's an output multiplier, include in the |
1734 |
* mgf2rad command */ |
1735 |
sprintf(cp, "-e %f ", sinf->mult); |
1736 |
cp += strlen(cp); |
1737 |
} |
1738 |
/* Include the glow distance for the geometry */ |
1739 |
sprintf(cp, "-g %f %s ", |
1740 |
sqrt(sinf->w*sinf->w + sinf->h*sinf->h + sinf->l*sinf->l), |
1741 |
inpname); |
1742 |
cp += strlen(cp); |
1743 |
if (instantiate) { /* instantiate octree */ |
1744 |
/* If "-g" is given on the command line, include an |
1745 |
* "oconv" command in the pipe. */ |
1746 |
strcpy(cp, "| oconv - > "); |
1747 |
cp += 12; |
1748 |
fullnam(cp,outname,T_OCT); |
1749 |
/* Only update if the input file is newer than the |
1750 |
* output file */ |
1751 |
if (fdate(inpname) > fdate(outname) && |
1752 |
system(buf)) { /* create octree */ |
1753 |
fclose(outfp); |
1754 |
return(-1); |
1755 |
} |
1756 |
/* Reference the instance file in the scene description */ |
1757 |
fprintf(outfp, "void instance %s_inst\n", outname); |
1758 |
/* If the geometry isn't in meters, scale it appropriately. */ |
1759 |
if (!FEQ(meters2out, 1.0)) |
1760 |
fprintf(outfp, "3 %s -s %f\n", |
1761 |
libname(buf,outname,T_OCT), |
1762 |
meters2out); |
1763 |
else |
1764 |
fprintf(outfp, "1 %s\n", libname(buf,outname,T_OCT)); |
1765 |
/* Close off the "instance" primitive. */ |
1766 |
fprintf(outfp, "0\n0\n"); |
1767 |
/* And the Radiance scene description. */ |
1768 |
fclose(outfp); |
1769 |
} else { /* else append to luminaire file */ |
1770 |
if (!FEQ(meters2out, 1.0)) { /* apply scalefactor */ |
1771 |
sprintf(cp, "| xform -s %f ", meters2out); |
1772 |
cp += strlen(cp); |
1773 |
} |
1774 |
if (!out2stdout) { |
1775 |
fclose(outfp); |
1776 |
strcpy(cp, ">> "); /* append works for DOS? */ |
1777 |
cp += 3; |
1778 |
fullnam(cp,outname,T_RAD); |
1779 |
} |
1780 |
if (system(buf)) |
1781 |
return(-1); |
1782 |
} |
1783 |
return(0); |
1784 |
} |
1785 |
|
1786 |
/* Set up emacs indentation */ |
1787 |
/* Local Variables: */ |
1788 |
/* c-file-style: "bsd" */ |
1789 |
/* End: */ |
1790 |
|
1791 |
/* For vim, use ":set tabstop=8 shiftwidth=8" */ |