9 |
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*/ |
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#include <stdio.h> |
12 |
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|
12 |
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#include <math.h> |
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|
13 |
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#include "fvect.h" |
16 |
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14 |
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#include "warp3d.h" |
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|
16 |
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#define MIND 1e-5 /* minimum distance between input points */ |
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|
18 |
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typedef struct { |
19 |
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GNDX n; /* index must be first */ |
20 |
< |
W3VEC p; |
20 |
> |
W3VEC v; |
21 |
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} KEYDP; /* key/data allocation pair */ |
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|
23 |
< |
#define fgetvec(f,v) (fgetval(f,'f',v) > 0 && fgetval(f,'f',v+1) > 0 \ |
24 |
< |
&& fgetval(f,'f',v+2) > 0) |
23 |
> |
#define fgetvec(p,v) (fgetval(p,'f',v) > 0 && fgetval(p,'f',v+1) > 0 \ |
24 |
> |
&& fgetval(p,'f',v+2) > 0) |
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|
26 |
< |
#define AHUNK 32 /* number of points to allocate at a time */ |
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> |
#define AHUNK 24 /* number of points to allocate at a time */ |
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|
28 |
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#ifndef malloc |
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extern char *malloc(), *realloc(); |
51 |
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{ |
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int rval = W3OK; |
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GNDX gi; |
54 |
< |
W3VEC gd; |
54 |
> |
W3VEC gd, ov; |
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|
56 |
< |
if (wp->grid.gn[0] == 0 && (rval = new3dwgrid(wp)) != W3OK) |
56 |
> |
if (wp->grid.gn[0] == 0 && (rval = new3dgrid(wp)) != W3OK) |
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return(rval); |
58 |
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rval |= gridpoint(gi, gd, pi, &wp->grid); |
59 |
< |
if (wp->grid.flags & W3EXACT) { |
60 |
< |
rval |= warp3dex(po, pi, wp); |
61 |
< |
return(rval); |
62 |
< |
} |
63 |
< |
if (wp->grid.flags & W3FAST) { |
64 |
< |
rval |= get3dgpt(po, gi, wp); |
65 |
< |
return(rval); |
66 |
< |
} |
67 |
< |
rval |= get3dgin(po, gi, gd, wp); |
59 |
> |
if (wp->grid.flags & W3EXACT) |
60 |
> |
rval |= warp3dex(ov, pi, wp); |
61 |
> |
else if (wp->grid.flags & W3FAST) |
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> |
rval |= get3dgpt(ov, gi, wp); |
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> |
else |
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> |
rval |= get3dgin(ov, gi, gd, wp); |
65 |
> |
po[0] = pi[0] + ov[0]; |
66 |
> |
po[1] = pi[1] + ov[1]; |
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> |
po[2] = pi[2] + ov[2]; |
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return(rval); |
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} |
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|
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|
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|
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int |
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< |
get3dgpt(po, ndx, wp) /* get value for voxel */ |
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W3VEC po; |
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> |
get3dgpt(ov, ndx, wp) /* get value for voxel */ |
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> |
W3VEC ov; |
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GNDX ndx; |
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register WARP3D *wp; |
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{ |
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int rval = W3OK; |
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register int i; |
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|
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le = lu_find(&wp->grid.gtab, (char *)ndx); |
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> |
le = lu_find(&wp->grid.gtab, ndx); |
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if (le == NULL) |
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return(W3ERROR); |
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if (le->data == NULL) { |
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if (wp->grid.flags & W3FAST) /* on centers */ |
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gpt[i] += .5*wp->grid.gstep[i]; |
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} |
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< |
rval |= warp3dex(kd->p, gpt, wp); |
123 |
> |
rval = warp3dex(kd->v, gpt, wp); |
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le->key = (char *)kd->n; |
125 |
< |
le->data = (char *)kd->p; |
125 |
> |
le->data = (char *)kd->v; |
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} |
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< |
W3VCPY(po, (float *)le->data); |
127 |
> |
W3VCPY(ov, (float *)le->data); |
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return(rval); |
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} |
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|
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|
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int |
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get3dgin(po, ndx, rem, wp) /* interpolate from warp grid */ |
134 |
< |
W3VEC po, rem; |
133 |
> |
get3dgin(ov, ndx, rem, wp) /* interpolate from warp grid */ |
134 |
> |
W3VEC ov, rem; |
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GNDX ndx; |
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WARP3D *wp; |
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{ |
138 |
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W3VEC cv[8]; |
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int rval; |
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GNDX gi; |
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+ |
int rval = 0; |
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register int i; |
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/* get corner values */ |
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for (i = 0; i < 8; i++) { |
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} |
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if (rval & W3ERROR) |
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return(rval); |
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< |
l3interp(po, cv, rem, 3); /* perform trilinear interpolation */ |
151 |
> |
l3interp(ov, cv, rem, 3); /* perform trilinear interpolation */ |
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return(rval); |
153 |
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} |
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|
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|
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|
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int |
176 |
< |
warp3dex(po, pi, wp) /* compute warp using 1/r^2 weighted avg. */ |
177 |
< |
W3VEC po, pi; |
176 |
> |
warp3dex(ov, pi, wp) /* compute warp using 1/r^2 weighted avg. */ |
177 |
> |
W3VEC ov, pi; |
178 |
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register WARP3D *wp; |
179 |
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{ |
180 |
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double d2, w, wsum; |
181 |
< |
W3VEC pt; |
181 |
> |
W3VEC vt; |
182 |
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register int i; |
183 |
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|
184 |
< |
pt[0] = pt[1] = pt[2] = 0.; |
184 |
> |
vt[0] = vt[1] = vt[2] = 0.; |
185 |
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wsum = 0.; |
186 |
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for (i = wp->npts; i--; ) { |
187 |
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d2 = wpdist2(pi, wp->ip[i]); |
188 |
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if (d2 <= MIND*MIND) w = 1./(MIND*MIND); |
189 |
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else w = 1./d2; |
190 |
< |
pt[0] += w*wp->op[i][0]; |
191 |
< |
pt[1] += w*wp->op[i][1]; |
192 |
< |
pt[2] += w*wp->op[i][2]; |
190 |
> |
vt[0] += w*wp->ov[i][0]; |
191 |
> |
vt[1] += w*wp->ov[i][1]; |
192 |
> |
vt[2] += w*wp->ov[i][2]; |
193 |
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wsum += w; |
194 |
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} |
195 |
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if (wsum > 0.) { |
196 |
< |
po[0] = pt[0]/wsum; |
197 |
< |
po[1] = pt[1]/wsum; |
198 |
< |
po[2] = pt[2]/wsum; |
196 |
> |
ov[0] = vt[0]/wsum; |
197 |
> |
ov[1] = vt[1]/wsum; |
198 |
> |
ov[2] = vt[2]/wsum; |
199 |
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} |
200 |
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return(W3OK); |
201 |
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} |
215 |
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eputs("new3dw: no memory\n"); |
216 |
|
return(NULL); |
217 |
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} |
218 |
< |
wp->ip = wp->op = NULL; |
218 |
> |
wp->ip = wp->ov = NULL; |
219 |
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wp->npts = 0; |
220 |
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wp->grid.flags = flgs; |
221 |
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wp->grid.gn[0] = wp->grid.gn[1] = wp->grid.gn[2] = 0; |
236 |
|
eputs(": cannot open\n"); |
237 |
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return(NULL); |
238 |
|
} |
239 |
< |
if (wp == NULL && (wp = new3dw()) == NULL) |
239 |
> |
if (wp == NULL && (wp = new3dw(0)) == NULL) |
240 |
|
goto memerr; |
241 |
|
while (fgetvec(fp, inp) && fgetvec(fp, outp)) |
242 |
|
if (!add3dpt(wp, inp, outp)) |
255 |
|
|
256 |
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|
257 |
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int |
258 |
+ |
set3dwfl(wp, flgs) /* reset warp flags */ |
259 |
+ |
register WARP3D *wp; |
260 |
+ |
int flgs; |
261 |
+ |
{ |
262 |
+ |
if (flgs == wp->grid.flags) |
263 |
+ |
return(0); |
264 |
+ |
if ((flgs & (W3EXACT|W3FAST)) == (W3EXACT|W3FAST)) { |
265 |
+ |
eputs("set3dwfl: only one of W3EXACT or W3FAST\n"); |
266 |
+ |
return(-1); |
267 |
+ |
} |
268 |
+ |
wp->grid.flags = flgs; |
269 |
+ |
done3dgrid(&wp->grid); /* old grid is invalid */ |
270 |
+ |
return(0); |
271 |
+ |
} |
272 |
+ |
|
273 |
+ |
|
274 |
+ |
int |
275 |
|
add3dpt(wp, pti, pto) /* add 3D point pair to warp structure */ |
276 |
|
register WARP3D *wp; |
277 |
|
W3VEC pti, pto; |
283 |
|
if (wp->npts == 0) { /* initialize */ |
284 |
|
wp->ip = (W3VEC *)malloc(AHUNK*sizeof(W3VEC)); |
285 |
|
if (wp->ip == NULL) return(0); |
286 |
< |
wp->op = (W3VEC *)malloc(AHUNK*sizeof(W3VEC)); |
287 |
< |
if (wp->op == NULL) return(0); |
286 |
> |
wp->ov = (W3VEC *)malloc(AHUNK*sizeof(W3VEC)); |
287 |
> |
if (wp->ov == NULL) return(0); |
288 |
|
wp->d2min = 1e10; |
289 |
|
wp->d2max = 0.; |
290 |
|
W3VCPY(wp->llim, pti); |
295 |
|
(wp->npts+AHUNK)*sizeof(W3VEC)); |
296 |
|
if (na == NULL) return(0); |
297 |
|
wp->ip = na; |
298 |
< |
na = (W3VEC *)realloc((char *)wp->op, |
298 |
> |
na = (W3VEC *)realloc((char *)wp->ov, |
299 |
|
(wp->npts+AHUNK)*sizeof(W3VEC)); |
300 |
|
if (na == NULL) return(0); |
301 |
< |
wp->op = na; |
301 |
> |
wp->ov = na; |
302 |
|
} |
303 |
|
for (i = 0; i < 3; i++) /* check boundaries */ |
304 |
|
if (pti[i] < wp->llim[i]) |
316 |
|
} |
317 |
|
} |
318 |
|
W3VCPY(wp->ip[wp->npts], pti); /* add new point */ |
319 |
< |
W3VCPY(wp->op[wp->npts], pto); |
319 |
> |
wp->ov[wp->npts][0] = pto[0] - pti[0]; |
320 |
> |
wp->ov[wp->npts][1] = pto[1] - pti[1]; |
321 |
> |
wp->ov[wp->npts][2] = pto[2] - pti[2]; |
322 |
|
done3dgrid(&wp->grid); /* old grid is invalid */ |
323 |
|
return(++wp->npts); |
324 |
|
} |
329 |
|
{ |
330 |
|
done3dgrid(&wp->grid); |
331 |
|
free((char *)wp->ip); |
332 |
< |
free((char *)wp->op); |
332 |
> |
free((char *)wp->ov); |
333 |
|
free((char *)wp); |
334 |
|
} |
335 |
|
|
343 |
|
|
344 |
|
|
345 |
|
int |
346 |
< |
new3dwgrid(wp) /* initialize interpolating grid for warp */ |
346 |
> |
new3dgrid(wp) /* initialize interpolating grid for warp */ |
347 |
|
register WARP3D *wp; |
348 |
|
{ |
349 |
+ |
W3VEC gmax; |
350 |
|
double gridstep, d; |
351 |
+ |
int n; |
352 |
|
register int i; |
353 |
|
/* free old grid (if any) */ |
354 |
|
done3dgrid(&wp->grid); |
359 |
|
return(W3BADMAP); /* not enough disparity */ |
360 |
|
/* compute gamut */ |
361 |
|
W3VCPY(wp->grid.gmin, wp->llim); |
362 |
< |
W3VCPY(wp->grid.gmax, wp->ulim); |
362 |
> |
W3VCPY(gmax, wp->ulim); |
363 |
|
gridstep = sqrt(wp->d2min); |
364 |
|
for (i = 0; i < 3; i++) { |
365 |
|
wp->grid.gmin[i] -= .501*gridstep; |
366 |
< |
wp->grid.gmax[i] += .501*gridstep; |
366 |
> |
gmax[i] += .501*gridstep; |
367 |
|
} |
368 |
|
if (wp->grid.flags & W3EXACT) { |
369 |
|
wp->grid.gn[0] = wp->grid.gn[1] = wp->grid.gn[2] = 1; |
371 |
|
} |
372 |
|
/* create grid */ |
373 |
|
for (i = 0; i < 3; i++) { |
374 |
< |
d = wp->grid.gmax[i] - wp->grid.gmin[i]; |
375 |
< |
wp->grid.gn[i] = d/gridstep + .5; |
376 |
< |
if (wp->grid.gn[i] >= MAXGN) |
377 |
< |
wp->grid.gn[i] = MAXGN-1; |
378 |
< |
wp->grid.gstep[i] = d / wp->grid.gn[i]; |
374 |
> |
d = gmax[i] - wp->grid.gmin[i]; |
375 |
> |
n = d/gridstep + .5; |
376 |
> |
if (n >= MAXGN-1) |
377 |
> |
n = MAXGN-2; |
378 |
> |
wp->grid.gstep[i] = d / n; |
379 |
> |
wp->grid.gn[i] = n; |
380 |
|
} |
381 |
|
/* initialize lookup table */ |
382 |
|
wp->grid.gtab.hashf = gridhash; |