| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: p_data.c,v 2.10 2023/11/15 18:02:53 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* p_data.c - routine for stored patterns. |
| 6 |
*/ |
| 7 |
|
| 8 |
#include "copyright.h" |
| 9 |
|
| 10 |
#include "ray.h" |
| 11 |
#include "data.h" |
| 12 |
#include "func.h" |
| 13 |
#include "rtotypes.h" |
| 14 |
|
| 15 |
/* |
| 16 |
* A stored pattern can either be brightness, |
| 17 |
* color, or spectral data. Brightness data is specified as: |
| 18 |
* |
| 19 |
* modifier brightdata name |
| 20 |
* 4+ func dfname vfname v0 v1 .. xf |
| 21 |
* 0 |
| 22 |
* n A1 A2 .. |
| 23 |
* |
| 24 |
* Color data is specified as: |
| 25 |
* |
| 26 |
* modifier colordata name |
| 27 |
* 8+ rfunc gfunc bfunc rdfname gdfname bdfname vfname v0 v1 .. xf |
| 28 |
* 0 |
| 29 |
* n A1 A2 .. |
| 30 |
* |
| 31 |
* Color picture data is specified as: |
| 32 |
* |
| 33 |
* modifier colorpict name |
| 34 |
* 7+ rfunc gfunc bfunc pfname vfname vx vy xf |
| 35 |
* 0 |
| 36 |
* n A1 A2 .. |
| 37 |
* |
| 38 |
* A simple spectrum is specified as: |
| 39 |
* |
| 40 |
* modifier spectrum name |
| 41 |
* 0 |
| 42 |
* 0 |
| 43 |
* 5+ nmA nmB s1 s2 s3 .. |
| 44 |
* |
| 45 |
* A constant spectrum from a data file is given as: |
| 46 |
* |
| 47 |
* modifier specfile name |
| 48 |
* 1 dfname |
| 49 |
* 0 |
| 50 |
* 0 |
| 51 |
* |
| 52 |
* A spectral data file is given as: |
| 53 |
* |
| 54 |
* modifier specdata name |
| 55 |
* 4+ sfunc dfname vfname v0 .. xf |
| 56 |
* 0 |
| 57 |
* n A1 A2 .. |
| 58 |
* |
| 59 |
* A spectral image is given as: |
| 60 |
* |
| 61 |
* modifier specpict name |
| 62 |
* 5+ sfunc sfname vfname vx vy xf |
| 63 |
* 0 |
| 64 |
* n A1 A2 .. |
| 65 |
* |
| 66 |
* Vfname is the name of the file where the variable definitions |
| 67 |
* can be found. The list of real arguments can be accessed by |
| 68 |
* definitions in the file. The dfnames are the data file |
| 69 |
* names. The dimensions of the data files and the number |
| 70 |
* of variables must match, except for specdata, which has a "hidden" |
| 71 |
* last variable for the wavelength. The funcs take a single argument |
| 72 |
* for brightdata, three for colordata and colorpict, and two for |
| 73 |
* specdata and specpict to modify interpolated values from the file. |
| 74 |
* The xf is a transform spec to get from the original coordinates to |
| 75 |
* the current coordinates. |
| 76 |
*/ |
| 77 |
|
| 78 |
|
| 79 |
int |
| 80 |
p_bdata( /* interpolate brightness data */ |
| 81 |
OBJREC *m, |
| 82 |
RAY *r |
| 83 |
) |
| 84 |
{ |
| 85 |
double bval; |
| 86 |
double pt[MAXDDIM]; |
| 87 |
DATARRAY *dp; |
| 88 |
MFUNC *mf; |
| 89 |
int i; |
| 90 |
|
| 91 |
if (m->oargs.nsargs < 4) |
| 92 |
objerror(m, USER, "bad # arguments"); |
| 93 |
dp = getdata(m->oargs.sarg[1]); |
| 94 |
i = (1 << dp->nd) - 1; |
| 95 |
mf = getfunc(m, 2, i<<3, 0); |
| 96 |
setfunc(m, r); |
| 97 |
errno = 0; |
| 98 |
for (i = dp->nd; i-- > 0; ) { |
| 99 |
pt[i] = evalue(mf->ep[i]); |
| 100 |
if ((errno == EDOM) | (errno == ERANGE)) |
| 101 |
goto computerr; |
| 102 |
} |
| 103 |
bval = datavalue(dp, pt); |
| 104 |
errno = 0; |
| 105 |
bval = funvalue(m->oargs.sarg[0], 1, &bval); |
| 106 |
if ((errno == EDOM) | (errno == ERANGE)) |
| 107 |
goto computerr; |
| 108 |
scalescolor(r->pcol, bval); |
| 109 |
return(0); |
| 110 |
computerr: |
| 111 |
objerror(m, WARNING, "compute error"); |
| 112 |
return(0); |
| 113 |
} |
| 114 |
|
| 115 |
|
| 116 |
int |
| 117 |
p_cdata( /* interpolate color data */ |
| 118 |
OBJREC *m, |
| 119 |
RAY *r |
| 120 |
) |
| 121 |
{ |
| 122 |
double col[3]; |
| 123 |
COLOR cval; |
| 124 |
double pt[MAXDDIM]; |
| 125 |
int nv; |
| 126 |
DATARRAY *dp; |
| 127 |
MFUNC *mf; |
| 128 |
int i; |
| 129 |
|
| 130 |
if (m->oargs.nsargs < 8) |
| 131 |
objerror(m, USER, "bad # arguments"); |
| 132 |
dp = getdata(m->oargs.sarg[3]); |
| 133 |
i = (1 << (nv = dp->nd)) - 1; |
| 134 |
mf = getfunc(m, 6, i<<7, 0); |
| 135 |
setfunc(m, r); |
| 136 |
errno = 0; |
| 137 |
for (i = 0; i < nv; i++) { |
| 138 |
pt[i] = evalue(mf->ep[i]); |
| 139 |
if ((errno == EDOM) | (errno == ERANGE)) |
| 140 |
goto computerr; |
| 141 |
} |
| 142 |
col[0] = datavalue(dp, pt); |
| 143 |
for (i = 1; i < 3; i++) { |
| 144 |
dp = getdata(m->oargs.sarg[3+i]); |
| 145 |
if (dp->nd != nv) |
| 146 |
objerror(m, USER, "dimension error"); |
| 147 |
col[i] = datavalue(dp, pt); |
| 148 |
} |
| 149 |
errno = 0; |
| 150 |
for (i = 0; i < 3; i++) |
| 151 |
if (i && fundefined(m->oargs.sarg[i]) < 3) |
| 152 |
colval(cval,i) = funvalue(m->oargs.sarg[i], 1, col+i); |
| 153 |
else |
| 154 |
colval(cval,i) = funvalue(m->oargs.sarg[i], 3, col); |
| 155 |
if ((errno == EDOM) | (errno == ERANGE)) |
| 156 |
goto computerr; |
| 157 |
smultcolor(r->pcol, cval); |
| 158 |
return(0); |
| 159 |
computerr: |
| 160 |
objerror(m, WARNING, "compute error"); |
| 161 |
return(0); |
| 162 |
} |
| 163 |
|
| 164 |
|
| 165 |
int |
| 166 |
p_pdata( /* interpolate picture data */ |
| 167 |
OBJREC *m, |
| 168 |
RAY *r |
| 169 |
) |
| 170 |
{ |
| 171 |
double col[3]; |
| 172 |
COLOR cval; |
| 173 |
double pt[2]; |
| 174 |
DATARRAY *dp; |
| 175 |
MFUNC *mf; |
| 176 |
int i; |
| 177 |
|
| 178 |
if (m->oargs.nsargs < 7) |
| 179 |
objerror(m, USER, "bad # arguments"); |
| 180 |
mf = getfunc(m, 4, 0x3<<5, 0); |
| 181 |
setfunc(m, r); |
| 182 |
errno = 0; |
| 183 |
pt[1] = evalue(mf->ep[0]); /* y major ordering */ |
| 184 |
pt[0] = evalue(mf->ep[1]); |
| 185 |
if ((errno == EDOM) | (errno == ERANGE)) |
| 186 |
goto computerr; |
| 187 |
dp = getpict(m->oargs.sarg[3]); |
| 188 |
for (i = 0; i < 3; i++) |
| 189 |
col[i] = datavalue(dp+i, pt); |
| 190 |
errno = 0; |
| 191 |
for (i = 0; i < 3; i++) |
| 192 |
if (i && fundefined(m->oargs.sarg[i]) < 3) |
| 193 |
colval(cval,i) = funvalue(m->oargs.sarg[i], 1, col+i); |
| 194 |
else |
| 195 |
colval(cval,i) = funvalue(m->oargs.sarg[i], 3, col); |
| 196 |
if ((errno == EDOM) | (errno == ERANGE)) |
| 197 |
goto computerr; |
| 198 |
smultcolor(r->pcol, cval); |
| 199 |
return(0); |
| 200 |
|
| 201 |
computerr: |
| 202 |
objerror(m, WARNING, "compute error"); |
| 203 |
return(0); |
| 204 |
} |
| 205 |
|
| 206 |
|
| 207 |
int |
| 208 |
p_spectrum( /* simple constant spectrum */ |
| 209 |
OBJREC *m, |
| 210 |
RAY *r |
| 211 |
) |
| 212 |
{ |
| 213 |
COLORV *scval; |
| 214 |
|
| 215 |
if ((scval = (COLORV *)m->os) == NULL) { |
| 216 |
COLORV *sinp; |
| 217 |
double hstep; |
| 218 |
int i; |
| 219 |
if (m->oargs.nfargs < 5) |
| 220 |
objerror(m, USER, "bad # arguments"); |
| 221 |
sinp = (COLORV *)malloc(sizeof(COLORV)*(m->oargs.nfargs-2)); |
| 222 |
scval = (COLORV *)malloc(sizeof(COLORV)*NCSAMP); |
| 223 |
if ((sinp == NULL) | (scval == NULL)) |
| 224 |
objerror(m, SYSTEM, "out of memory"); |
| 225 |
for (i = m->oargs.nfargs-2; i--; ) |
| 226 |
sinp[i] = (COLORV)m->oargs.farg[i+2]; |
| 227 |
hstep = 0.5 * (m->oargs.farg[1] - m->oargs.farg[0]) / |
| 228 |
(m->oargs.nfargs-3.0); |
| 229 |
convertscolor(scval, NCSAMP, WLPART[0], WLPART[3], |
| 230 |
sinp, m->oargs.nfargs-2, |
| 231 |
m->oargs.farg[0]-hstep, m->oargs.farg[1]+hstep); |
| 232 |
free(sinp); |
| 233 |
m->os = (void *)scval; |
| 234 |
} |
| 235 |
smultscolor(r->pcol, scval); |
| 236 |
return(0); |
| 237 |
} |
| 238 |
|
| 239 |
|
| 240 |
int |
| 241 |
p_specfile( /* constant spectrum from 1-D data file */ |
| 242 |
OBJREC *m, |
| 243 |
RAY *r |
| 244 |
) |
| 245 |
{ |
| 246 |
COLORV *scval; |
| 247 |
|
| 248 |
if ((scval = (COLORV *)m->os) == NULL) { |
| 249 |
DATARRAY *dp; |
| 250 |
COLORV *sinp; |
| 251 |
double step; |
| 252 |
int i; |
| 253 |
if (m->oargs.nsargs != 1) |
| 254 |
objerror(m, USER, "bad # arguments"); |
| 255 |
dp = getdata(m->oargs.sarg[0]); |
| 256 |
if (dp->nd != 1) |
| 257 |
objerror(m, USER, "data file must be 1-dimensional"); |
| 258 |
|
| 259 |
sinp = (COLORV *)malloc(sizeof(COLORV)*dp->dim[0].ne); |
| 260 |
scval = (COLORV *)malloc(sizeof(COLORV)*NCSAMP); |
| 261 |
if ((sinp == NULL) | (scval == NULL)) |
| 262 |
objerror(m, SYSTEM, "out of memory"); |
| 263 |
step = dp->dim[0].siz / (dp->dim[0].ne - 1.0); |
| 264 |
for (i = dp->dim[0].ne; i-- > 0; ) { |
| 265 |
double wl = dp->dim[0].org + i*step; |
| 266 |
sinp[i] = (COLORV)datavalue(dp, &wl); |
| 267 |
} |
| 268 |
convertscolor(scval, NCSAMP, WLPART[0], WLPART[3], |
| 269 |
sinp, dp->dim[0].ne, dp->dim[0].org-.5*step, |
| 270 |
dp->dim[0].org+dp->dim[0].siz+.5*step); |
| 271 |
free(sinp); |
| 272 |
m->os = (void *)scval; |
| 273 |
} |
| 274 |
smultscolor(r->pcol, scval); |
| 275 |
return(0); |
| 276 |
} |
| 277 |
|
| 278 |
|
| 279 |
int |
| 280 |
p_specdata( /* varied spectrum from (N+1)-D file */ |
| 281 |
OBJREC *m, |
| 282 |
RAY *r |
| 283 |
) |
| 284 |
{ |
| 285 |
SCOLOR scval; |
| 286 |
COLORV *scdat; |
| 287 |
double pt[MAXDDIM]; |
| 288 |
DATARRAY *dp; |
| 289 |
MFUNC *mf; |
| 290 |
double step; |
| 291 |
int i; |
| 292 |
|
| 293 |
if (m->oargs.nsargs < 4) |
| 294 |
objerror(m, USER, "bad # arguments"); |
| 295 |
dp = getdata(m->oargs.sarg[1]); |
| 296 |
if (dp->nd < 2) |
| 297 |
objerror(m, USER, "need at least 2-dimensional data"); |
| 298 |
if (dp->dim[dp->nd-1].ne > MAXCSAMP) |
| 299 |
objerror(m, USER, "too many spectral samples in data file"); |
| 300 |
i = (1 << (dp->nd-1)) - 1; |
| 301 |
mf = getfunc(m, 2, i<<3, 0); |
| 302 |
setfunc(m, r); |
| 303 |
errno = 0; |
| 304 |
for (i = dp->nd-1; i-- > 0; ) { |
| 305 |
pt[i] = evalue(mf->ep[i]); |
| 306 |
if ((errno == EDOM) | (errno == ERANGE)) |
| 307 |
goto computerr; |
| 308 |
} |
| 309 |
step = dp->dim[dp->nd-1].siz / (dp->dim[dp->nd-1].ne - 1.0); |
| 310 |
scdat = (COLORV *)malloc(sizeof(COLORV)*dp->dim[dp->nd-1].ne); |
| 311 |
if (scdat == NULL) |
| 312 |
objerror(m, SYSTEM, "out of memory"); |
| 313 |
for (i = dp->dim[dp->nd-1].ne; i-- > 0; ) { |
| 314 |
double bval[2]; |
| 315 |
pt[dp->nd-1] = dp->dim[dp->nd-1].org + i*step; |
| 316 |
bval[0] = datavalue(dp, pt); |
| 317 |
bval[1] = pt[dp->nd-1]; |
| 318 |
errno = 0; |
| 319 |
scdat[i] = funvalue(m->oargs.sarg[0], 2, bval); |
| 320 |
if ((errno == EDOM) | (errno == ERANGE)) |
| 321 |
goto computerr; |
| 322 |
} |
| 323 |
convertscolor(scval, NCSAMP, WLPART[0], WLPART[3], |
| 324 |
scdat, dp->dim[dp->nd-1].ne, |
| 325 |
dp->dim[dp->nd-1].org-.5*step, |
| 326 |
dp->dim[dp->nd-1].org+dp->dim[dp->nd-1].siz+.5*step); |
| 327 |
free(scdat); |
| 328 |
smultscolor(r->pcol, scval); |
| 329 |
return(0); |
| 330 |
computerr: |
| 331 |
objerror(m, WARNING, "compute error"); |
| 332 |
return(0); |
| 333 |
} |
| 334 |
|
| 335 |
|
| 336 |
int |
| 337 |
p_specpict( /* interpolate hyperspectral image data */ |
| 338 |
OBJREC *m, |
| 339 |
RAY *r |
| 340 |
) |
| 341 |
{ |
| 342 |
SCOLOR scdat, scval; |
| 343 |
double pt[3]; |
| 344 |
DATARRAY *dp; |
| 345 |
MFUNC *mf; |
| 346 |
double step; |
| 347 |
int i; |
| 348 |
|
| 349 |
if (m->oargs.nsargs < 5) |
| 350 |
objerror(m, USER, "bad # arguments"); |
| 351 |
mf = getfunc(m, 2, 0x3<<3, 0); |
| 352 |
setfunc(m, r); |
| 353 |
errno = 0; |
| 354 |
pt[1] = evalue(mf->ep[0]); /* y major ordering */ |
| 355 |
pt[0] = evalue(mf->ep[1]); |
| 356 |
if ((errno == EDOM) | (errno == ERANGE)) |
| 357 |
goto computerr; |
| 358 |
dp = getspec(m->oargs.sarg[1]); |
| 359 |
step = dp->dim[2].siz / (dp->dim[2].ne - 1.0); |
| 360 |
for (i = dp->dim[2].ne; i-- > 0; ) { |
| 361 |
double bval[2]; |
| 362 |
pt[2] = dp->dim[2].org + i*step; |
| 363 |
bval[0] = datavalue(dp, pt); |
| 364 |
bval[1] = pt[2]; |
| 365 |
errno = 0; |
| 366 |
scdat[i] = funvalue(m->oargs.sarg[0], 2, bval); |
| 367 |
if ((errno == EDOM) | (errno == ERANGE)) |
| 368 |
goto computerr; |
| 369 |
} |
| 370 |
convertscolor(scval, NCSAMP, WLPART[0], WLPART[3], |
| 371 |
scdat, dp->dim[2].ne, |
| 372 |
dp->dim[2].org-.5*step, |
| 373 |
dp->dim[2].org+dp->dim[2].siz+.5*step); |
| 374 |
smultscolor(r->pcol, scval); |
| 375 |
return(0); |
| 376 |
computerr: |
| 377 |
objerror(m, WARNING, "compute error"); |
| 378 |
return(0); |
| 379 |
} |
