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/* Copyright (c) 1987 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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|
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/* |
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* rv3.c - miscellaneous routines for rview. |
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* |
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* 5/11/87 |
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* External symbols declared in rpaint.h |
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*/ |
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#include "ray.h" |
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#include "copyright.h" |
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|
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#include "octree.h" |
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#include <string.h> |
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#include "ray.h" |
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#include "rpaint.h" |
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#include "random.h" |
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#ifndef WFLUSH |
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#define WFLUSH 64 /* flush after this many rays */ |
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#endif |
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|
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getrect(s, r) /* get a box */ |
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char *s; |
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register RECT *r; |
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#ifdef SMLFLT |
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#define sscanvec(s,v) (sscanf(s,"%f %f %f",v,v+1,v+2)==3) |
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#else |
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#define sscanvec(s,v) (sscanf(s,"%lf %lf %lf",v,v+1,v+2)==3) |
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#endif |
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|
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static int niflush; /* flushes since newimage() */ |
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|
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int |
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getrect( /* get a box */ |
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char *s, |
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RECT *r |
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) |
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{ |
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int x0, y0, x1, y1; |
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} |
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|
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getinterest(s, direc, vec, mp) /* get area of interest */ |
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char *s; |
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int direc; |
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FVECT vec; |
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double *mp; |
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int |
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getinterest( /* get area of interest */ |
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char *s, |
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int direc, |
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FVECT vec, |
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double *mp |
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) |
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{ |
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int x, y; |
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RAY thisray; |
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register int i; |
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int i; |
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|
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if (sscanf(s, "%lf", mp) != 1) |
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*mp = 1.0; |
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error(COMMAND, "illegal magnification"); |
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return(-1); |
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} |
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if (sscanf(s, "%*lf %lf %lf %lf", &vec[0], &vec[1], &vec[2]) != 3) { |
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if (!sscanvec(sskip(s), vec)) { |
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if (dev->getcur == NULL) |
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return(-1); |
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(*dev->comout)("Pick view center\n"); |
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if ((*dev->getcur)(&x, &y) == ABORT) |
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return(-1); |
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viewray(thisray.rorg, thisray.rdir, &ourview, |
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(x+.5)/hresolu, (y+.5)/vresolu); |
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if ((thisray.rmax = viewray(thisray.rorg, thisray.rdir, |
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&ourview, (x+.5)/hresolu, (y+.5)/vresolu)) < -FTINY) { |
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error(COMMAND, "not on image"); |
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return(-1); |
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} |
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if (!direc || ourview.type == VT_PAR) { |
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rayorigin(&thisray, NULL, PRIMARY, 1.0); |
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rayorigin(&thisray, PRIMARY, NULL, NULL); |
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if (!localhit(&thisray, &thescene)) { |
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error(COMMAND, "not a local object"); |
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return(-1); |
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VCOPY(vec, thisray.rdir); |
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else |
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VCOPY(vec, thisray.rop); |
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} else if (direc) |
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for (i = 0; i < 3; i++) |
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vec[i] -= ourview.vp[i]; |
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} else if (direc) { |
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for (i = 0; i < 3; i++) |
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vec[i] -= ourview.vp[i]; |
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if (normalize(vec) == 0.0) { |
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error(COMMAND, "point at view origin"); |
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return(-1); |
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} |
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} |
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return(0); |
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} |
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float * /* keep consistent with COLOR typedef */ |
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greyof(col) /* convert color to greyscale */ |
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register COLOR col; |
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greyof( /* convert color to greyscale */ |
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COLOR col |
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) |
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{ |
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static COLOR gcol; |
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double b; |
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} |
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paint(p, xmin, ymin, xmax, ymax) /* compute and paint a rectangle */ |
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register PNODE *p; |
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int xmin, ymin, xmax, ymax; |
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int |
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paint( /* compute and paint a rectangle */ |
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PNODE *p |
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) |
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{ |
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extern int ray_pnprocs; |
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static unsigned long lastflush = 0; |
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static RAY thisray; |
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double h, v; |
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register int i; |
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|
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if (xmax - xmin <= 0 || ymax - ymin <= 0) { /* empty */ |
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p->x = xmin; |
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p->y = ymin; |
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if (p->xmax - p->xmin <= 0 || p->ymax - p->ymin <= 0) { /* empty */ |
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p->x = p->xmin; |
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p->y = p->ymin; |
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setcolor(p->v, 0.0, 0.0, 0.0); |
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return; |
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return(0); |
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} |
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/* jitter ray direction */ |
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p->x = h = xmin + (xmax-xmin)*frandom(); |
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h /= hresolu; |
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p->y = v = ymin + (ymax-ymin)*frandom(); |
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v /= vresolu; |
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p->x = h = p->xmin + (p->xmax-p->xmin)*frandom(); |
168 |
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p->y = v = p->ymin + (p->ymax-p->ymin)*frandom(); |
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|
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viewray(thisray.rorg, thisray.rdir, &ourview, h, v); |
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if ((thisray.rmax = viewray(thisray.rorg, thisray.rdir, &ourview, |
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h/hresolu, v/vresolu)) < -FTINY) { |
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setcolor(thisray.rcol, 0.0, 0.0, 0.0); |
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} else { |
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int rval; |
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rayorigin(&thisray, PRIMARY, NULL, NULL); |
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thisray.rno = (unsigned long)p; |
177 |
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rval = ray_pqueue(&thisray); |
178 |
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if (!rval) |
179 |
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return(0); |
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if (rval < 0) |
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return(-1); |
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p = (PNODE *)thisray.rno; |
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} |
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|
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rayorigin(&thisray, NULL, PRIMARY, 1.0); |
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|
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rayvalue(&thisray); |
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|
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copycolor(p->v, thisray.rcol); |
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|
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scalecolor(p->v, exposure); |
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|
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(*dev->paintr)(greyscale?greyof(p->v):p->v, xmin, ymin, xmax, ymax); |
188 |
> |
(*dev->paintr)(greyscale?greyof(p->v):p->v, |
189 |
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p->xmin, p->ymin, p->xmax, p->ymax); |
190 |
> |
|
191 |
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if (dev->flush != NULL && raynum - lastflush >= ray_pnprocs * |
192 |
> |
(ambounce > 0 && niflush < WFLUSH ? niflush : WFLUSH)) { |
193 |
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lastflush = raynum; |
194 |
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(*dev->flush)(); |
195 |
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niflush++; |
196 |
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} |
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> |
return(1); |
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} |
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|
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newimage() /* start a new image */ |
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int |
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> |
waitrays(void) /* finish up pending rays */ |
203 |
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{ |
204 |
+ |
int nwaited = 0; |
205 |
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int rval; |
206 |
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RAY raydone; |
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|
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+ |
while ((rval = ray_presult(&raydone, 0)) > 0) { |
209 |
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PNODE *p = (PNODE *)raydone.rno; |
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copycolor(p->v, raydone.rcol); |
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scalecolor(p->v, exposure); |
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(*dev->paintr)(greyscale?greyof(p->v):p->v, |
213 |
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p->xmin, p->ymin, p->xmax, p->ymax); |
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nwaited++; |
215 |
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} |
216 |
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if (rval < 0) |
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return(-1); |
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return(nwaited); |
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} |
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|
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|
222 |
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void |
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newimage( /* start a new image */ |
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char *s |
225 |
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) |
226 |
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{ |
227 |
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int newnp; |
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/* change in nproc? */ |
229 |
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if (s != NULL && sscanf(s, "%d", &newnp) == 1 && newnp > 0) { |
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if (!newparam) { |
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if (newnp < nproc) |
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ray_pclose(nproc - newnp); |
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else |
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ray_popen(newnp - nproc); |
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} |
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nproc = newnp; |
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} |
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/* free old image */ |
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freepkids(&ptrunk); |
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/* compute resolution */ |
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hresolu = dev->xsiz; |
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vresolu = dev->ysiz; |
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normaspect(viewaspect(&ourview), &dev->pixaspect, &hresolu, &vresolu); |
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< |
pframe.l = pframe.d = 0; |
245 |
< |
pframe.r = hresolu; pframe.u = vresolu; |
244 |
> |
ptrunk.xmin = ptrunk.ymin = pframe.l = pframe.d = 0; |
245 |
> |
ptrunk.xmax = pframe.r = hresolu; |
246 |
> |
ptrunk.ymax = pframe.u = vresolu; |
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pdepth = 0; |
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/* clear device */ |
249 |
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(*dev->clear)(hresolu, vresolu); |
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< |
/* get first value */ |
251 |
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paint(&ptrunk, 0, 0, hresolu, vresolu); |
250 |
> |
|
251 |
> |
if (newparam) { /* (re)start rendering procs */ |
252 |
> |
ray_pclose(0); |
253 |
> |
ray_popen(nproc); |
254 |
> |
newparam = 0; |
255 |
> |
} |
256 |
> |
niflush = 0; /* get first value */ |
257 |
> |
paint(&ptrunk); |
258 |
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} |
259 |
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|
260 |
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|
261 |
< |
redraw() /* redraw the image */ |
261 |
> |
void |
262 |
> |
redraw(void) /* redraw the image */ |
263 |
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{ |
264 |
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(*dev->clear)(hresolu, vresolu); |
265 |
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(*dev->comout)("redrawing...\n"); |
268 |
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} |
269 |
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|
270 |
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|
271 |
< |
repaint(xmin, ymin, xmax, ymax) /* repaint a region */ |
272 |
< |
int xmin, ymin, xmax, ymax; |
271 |
> |
void |
272 |
> |
repaint( /* repaint a region */ |
273 |
> |
int xmin, |
274 |
> |
int ymin, |
275 |
> |
int xmax, |
276 |
> |
int ymax |
277 |
> |
) |
278 |
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{ |
279 |
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RECT reg; |
280 |
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|
281 |
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reg.l = xmin; reg.r = xmax; |
282 |
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reg.d = ymin; reg.u = ymax; |
283 |
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|
284 |
< |
paintrect(&ptrunk, 0, 0, hresolu, vresolu, ®); |
284 |
> |
paintrect(&ptrunk, ®); |
285 |
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} |
286 |
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|
287 |
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|
288 |
< |
paintrect(p, xmin, ymin, xmax, ymax, r) /* paint picture rectangle */ |
289 |
< |
register PNODE *p; |
290 |
< |
int xmin, ymin, xmax, ymax; |
291 |
< |
register RECT *r; |
288 |
> |
void |
289 |
> |
paintrect( /* paint picture rectangle */ |
290 |
> |
PNODE *p, |
291 |
> |
RECT *r |
292 |
> |
) |
293 |
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{ |
294 |
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int mx, my; |
295 |
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|
296 |
< |
if (xmax - xmin <= 0 || ymax - ymin <= 0) |
296 |
> |
if (p->xmax - p->xmin <= 0 || p->ymax - p->ymin <= 0) |
297 |
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return; |
298 |
|
|
299 |
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if (p->kid == NULL) { |
300 |
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(*dev->paintr)(greyscale?greyof(p->v):p->v, |
301 |
< |
xmin, ymin, xmax, ymax); /* do this */ |
301 |
> |
p->xmin, p->ymin, p->xmax, p->ymax); /* do this */ |
302 |
|
return; |
303 |
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} |
304 |
< |
mx = (xmin + xmax) >> 1; /* do kids */ |
305 |
< |
my = (ymin + ymax) >> 1; |
304 |
> |
mx = (p->xmin + p->xmax) >> 1; /* do kids */ |
305 |
> |
my = (p->ymin + p->ymax) >> 1; |
306 |
|
if (mx > r->l) { |
307 |
|
if (my > r->d) |
308 |
< |
paintrect(p->kid+DL, xmin, ymin, mx, my, r); |
308 |
> |
paintrect(p->kid+DL, r); |
309 |
|
if (my < r->u) |
310 |
< |
paintrect(p->kid+UL, xmin, my, mx, ymax, r); |
310 |
> |
paintrect(p->kid+UL, r); |
311 |
|
} |
312 |
|
if (mx < r->r) { |
313 |
|
if (my > r->d) |
314 |
< |
paintrect(p->kid+DR, mx, ymin, xmax, my, r); |
314 |
> |
paintrect(p->kid+DR, r); |
315 |
|
if (my < r->u) |
316 |
< |
paintrect(p->kid+UR, mx, my, xmax, ymax, r); |
316 |
> |
paintrect(p->kid+UR, r); |
317 |
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} |
318 |
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} |
319 |
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|
320 |
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|
321 |
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PNODE * |
322 |
< |
findrect(x, y, p, r, pd) /* find a rectangle */ |
323 |
< |
int x, y; |
324 |
< |
register PNODE *p; |
325 |
< |
register RECT *r; |
326 |
< |
int pd; |
322 |
> |
findrect( /* find a rectangle */ |
323 |
> |
int x, |
324 |
> |
int y, |
325 |
> |
PNODE *p, |
326 |
> |
int pd |
327 |
> |
) |
328 |
|
{ |
329 |
|
int mx, my; |
330 |
|
|
331 |
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while (p->kid != NULL && pd--) { |
332 |
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|
333 |
< |
mx = (r->l + r->r) >> 1; |
334 |
< |
my = (r->d + r->u) >> 1; |
333 |
> |
mx = (p->xmin + p->xmax) >> 1; |
334 |
> |
my = (p->ymin + p->ymax) >> 1; |
335 |
|
|
336 |
|
if (x < mx) { |
249 |
– |
r->r = mx; |
337 |
|
if (y < my) { |
251 |
– |
r->u = my; |
338 |
|
p = p->kid+DL; |
339 |
|
} else { |
254 |
– |
r->d = my; |
340 |
|
p = p->kid+UL; |
341 |
|
} |
342 |
|
} else { |
258 |
– |
r->l = mx; |
343 |
|
if (y < my) { |
260 |
– |
r->u = my; |
344 |
|
p = p->kid+DR; |
345 |
|
} else { |
263 |
– |
r->d = my; |
346 |
|
p = p->kid+UR; |
347 |
|
} |
348 |
|
} |
351 |
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} |
352 |
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|
353 |
|
|
354 |
< |
scalepict(p, sf) /* scale picture values */ |
355 |
< |
register PNODE *p; |
356 |
< |
double sf; |
354 |
> |
void |
355 |
> |
scalepict( /* scale picture values */ |
356 |
> |
PNODE *p, |
357 |
> |
double sf |
358 |
> |
) |
359 |
|
{ |
360 |
|
scalecolor(p->v, sf); /* do this node */ |
361 |
|
|
369 |
|
} |
370 |
|
|
371 |
|
|
372 |
< |
getpictcolrs(yoff, scan, p, xsiz, ysiz) /* get scanline from picture */ |
373 |
< |
int yoff; |
374 |
< |
register COLR *scan; |
375 |
< |
register PNODE *p; |
376 |
< |
int xsiz, ysiz; |
372 |
> |
void |
373 |
> |
getpictcolrs( /* get scanline from picture */ |
374 |
> |
int yoff, |
375 |
> |
COLR *scan, |
376 |
> |
PNODE *p, |
377 |
> |
int xsiz, |
378 |
> |
int ysiz |
379 |
> |
) |
380 |
|
{ |
381 |
< |
register int mx; |
381 |
> |
int mx; |
382 |
|
int my; |
383 |
|
|
384 |
|
if (p->kid == NULL) { /* do this node */ |
402 |
|
} |
403 |
|
|
404 |
|
|
405 |
< |
pcopy(p1, p2) /* copy paint node p1 into p2 */ |
406 |
< |
register PNODE *p1, *p2; |
405 |
> |
void |
406 |
> |
freepkids( /* free pnode's children */ |
407 |
> |
PNODE *p |
408 |
> |
) |
409 |
|
{ |
321 |
– |
copycolor(p2->v, p1->v); |
322 |
– |
p2->x = p1->x; |
323 |
– |
p2->y = p1->y; |
324 |
– |
} |
325 |
– |
|
326 |
– |
|
327 |
– |
freepkids(p) /* free pnode's children */ |
328 |
– |
register PNODE *p; |
329 |
– |
{ |
410 |
|
if (p->kid == NULL) |
411 |
|
return; |
412 |
|
freepkids(p->kid+DL); |
413 |
|
freepkids(p->kid+DR); |
414 |
|
freepkids(p->kid+UL); |
415 |
|
freepkids(p->kid+UR); |
416 |
< |
free((char *)p->kid); |
416 |
> |
free((void *)p->kid); |
417 |
|
p->kid = NULL; |
418 |
|
} |
419 |
|
|
420 |
|
|
421 |
< |
newview(vp) /* change viewing parameters */ |
422 |
< |
register VIEW *vp; |
421 |
> |
void |
422 |
> |
newview( /* change viewing parameters */ |
423 |
> |
VIEW *vp |
424 |
> |
) |
425 |
|
{ |
426 |
|
char *err; |
427 |
|
|
428 |
|
if ((err = setview(vp)) != NULL) { |
429 |
|
sprintf(errmsg, "view not set - %s", err); |
430 |
|
error(COMMAND, errmsg); |
431 |
< |
} else if (bcmp(vp, &ourview, sizeof(VIEW))) { |
432 |
< |
copyview(&oldview, &ourview); |
433 |
< |
copyview(&ourview, vp); |
434 |
< |
newimage(); /* newimage() calls with vp=&ourview! */ |
431 |
> |
} else if (memcmp((char *)vp, (char *)&ourview, sizeof(VIEW))) { |
432 |
> |
oldview = ourview; |
433 |
> |
ourview = *vp; |
434 |
> |
newimage(NULL); |
435 |
|
} |
436 |
|
} |
437 |
|
|
438 |
|
|
439 |
< |
moveview(angle, elev, mag, vc) /* move viewpoint */ |
440 |
< |
double angle, elev, mag; |
441 |
< |
FVECT vc; |
439 |
> |
void |
440 |
> |
moveview( /* move viewpoint */ |
441 |
> |
double angle, |
442 |
> |
double elev, |
443 |
> |
double mag, |
444 |
> |
FVECT vc |
445 |
> |
) |
446 |
|
{ |
361 |
– |
extern double sqrt(), dist2(); |
447 |
|
double d; |
448 |
|
FVECT v1; |
449 |
< |
VIEW nv; |
450 |
< |
register int i; |
449 |
> |
VIEW nv = ourview; |
450 |
> |
int i; |
451 |
|
|
367 |
– |
VCOPY(nv.vup, ourview.vup); |
368 |
– |
nv.hoff = ourview.hoff; nv.voff = ourview.voff; |
452 |
|
spinvector(nv.vdir, ourview.vdir, ourview.vup, angle*(PI/180.)); |
453 |
|
if (elev != 0.0) { |
454 |
|
fcross(v1, ourview.vup, nv.vdir); |
455 |
|
normalize(v1); |
456 |
|
spinvector(nv.vdir, nv.vdir, v1, elev*(PI/180.)); |
457 |
|
} |
458 |
< |
if ((nv.type = ourview.type) == VT_PAR) { |
459 |
< |
nv.horiz = ourview.horiz / mag; |
460 |
< |
nv.vert = ourview.vert / mag; |
458 |
> |
if (nv.type == VT_PAR) { |
459 |
> |
nv.horiz /= mag; |
460 |
> |
nv.vert /= mag; |
461 |
|
d = 0.0; /* don't move closer */ |
462 |
|
for (i = 0; i < 3; i++) |
463 |
|
d += (vc[i] - ourview.vp[i])*ourview.vdir[i]; |
464 |
|
} else { |
382 |
– |
nv.horiz = ourview.horiz; |
383 |
– |
nv.vert = ourview.vert; |
465 |
|
d = sqrt(dist2(ourview.vp, vc)) / mag; |
466 |
+ |
if (nv.vfore > FTINY) { |
467 |
+ |
nv.vfore += d - d*mag; |
468 |
+ |
if (nv.vfore < 0.0) nv.vfore = 0.0; |
469 |
+ |
} |
470 |
+ |
if (nv.vaft > FTINY) { |
471 |
+ |
nv.vaft += d - d*mag; |
472 |
+ |
if (nv.vaft <= nv.vfore) nv.vaft = 0.0; |
473 |
+ |
} |
474 |
+ |
nv.vdist /= mag; |
475 |
|
} |
476 |
|
for (i = 0; i < 3; i++) |
477 |
|
nv.vp[i] = vc[i] - d*nv.vdir[i]; |
479 |
|
} |
480 |
|
|
481 |
|
|
482 |
< |
spinvector(vres, vorig, vnorm, theta) /* rotate vector around normal */ |
483 |
< |
FVECT vres, vorig, vnorm; |
484 |
< |
double theta; |
482 |
> |
void |
483 |
> |
pcopy( /* copy paint node p1 into p2 */ |
484 |
> |
PNODE *p1, |
485 |
> |
PNODE *p2 |
486 |
> |
) |
487 |
|
{ |
488 |
< |
extern double sin(), cos(); |
489 |
< |
double sint, cost, dotp; |
490 |
< |
FVECT vperp; |
491 |
< |
register int i; |
492 |
< |
|
493 |
< |
if (theta == 0.0) { |
494 |
< |
VCOPY(vres, vorig); |
488 |
> |
copycolor(p2->v, p1->v); |
489 |
> |
p2->x = p1->x; |
490 |
> |
p2->y = p1->y; |
491 |
> |
} |
492 |
> |
|
493 |
> |
|
494 |
> |
void |
495 |
> |
zoomview( /* zoom in or out */ |
496 |
> |
VIEW *vp, |
497 |
> |
double zf |
498 |
> |
) |
499 |
> |
{ |
500 |
> |
switch (vp->type) { |
501 |
> |
case VT_PAR: /* parallel view */ |
502 |
> |
vp->horiz /= zf; |
503 |
> |
vp->vert /= zf; |
504 |
|
return; |
505 |
+ |
case VT_ANG: /* angular fisheye */ |
506 |
+ |
vp->horiz /= zf; |
507 |
+ |
if (vp->horiz > 360.) |
508 |
+ |
vp->horiz = 360.; |
509 |
+ |
vp->vert /= zf; |
510 |
+ |
if (vp->vert > 360.) |
511 |
+ |
vp->vert = 360.; |
512 |
+ |
return; |
513 |
+ |
case VT_PLS: /* planisphere fisheye */ |
514 |
+ |
vp->horiz = sin((PI/180./2.)*vp->horiz) / |
515 |
+ |
(1.0 + cos((PI/180./2.)*vp->horiz)) / zf; |
516 |
+ |
vp->horiz *= vp->horiz; |
517 |
+ |
vp->horiz = (2.*180./PI)*acos((1. - vp->horiz) / |
518 |
+ |
(1. + vp->horiz)); |
519 |
+ |
vp->vert = sin((PI/180./2.)*vp->vert) / |
520 |
+ |
(1.0 + cos((PI/180./2.)*vp->vert)) / zf; |
521 |
+ |
vp->vert *= vp->vert; |
522 |
+ |
vp->vert = (2.*180./PI)*acos((1. - vp->vert) / |
523 |
+ |
(1. + vp->vert)); |
524 |
+ |
return; |
525 |
+ |
case VT_CYL: /* cylindrical panorama */ |
526 |
+ |
vp->horiz /= zf; |
527 |
+ |
if (vp->horiz > 360.) |
528 |
+ |
vp->horiz = 360.; |
529 |
+ |
vp->vert = atan(tan(vp->vert*(PI/180./2.))/zf) / (PI/180./2.); |
530 |
+ |
return; |
531 |
+ |
case VT_PER: /* perspective view */ |
532 |
+ |
vp->horiz = atan(tan(vp->horiz*(PI/180./2.))/zf) / |
533 |
+ |
(PI/180./2.); |
534 |
+ |
vp->vert = atan(tan(vp->vert*(PI/180./2.))/zf) / |
535 |
+ |
(PI/180./2.); |
536 |
+ |
return; |
537 |
+ |
case VT_HEM: /* hemispherical fisheye */ |
538 |
+ |
vp->horiz = sin(vp->horiz*(PI/180./2.))/zf; |
539 |
+ |
if (vp->horiz >= 1.0-FTINY) |
540 |
+ |
vp->horiz = 180.; |
541 |
+ |
else |
542 |
+ |
vp->horiz = asin(vp->horiz) / (PI/180./2.); |
543 |
+ |
vp->vert = sin(vp->vert*(PI/180./2.))/zf; |
544 |
+ |
if (vp->vert >= 1.0-FTINY) |
545 |
+ |
vp->vert = 180.; |
546 |
+ |
else |
547 |
+ |
vp->vert = asin(vp->vert) / (PI/180./2.); |
548 |
+ |
return; |
549 |
|
} |
405 |
– |
sint = sin(theta); |
406 |
– |
cost = cos(theta); |
407 |
– |
dotp = DOT(vorig, vnorm); |
408 |
– |
fcross(vperp, vnorm, vorig); |
409 |
– |
for (i = 0; i < 3; i++) |
410 |
– |
vres[i] = vnorm[i]*dotp*(1.-cost) + |
411 |
– |
vorig[i]*cost + vperp[i]*sint; |
550 |
|
} |