1 |
greg |
1.1 |
/* 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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#endif |
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/* |
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* rv2.c - command routines used in tracing a view. |
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* |
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* 3/24/87 |
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*/ |
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#include "ray.h" |
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#include "octree.h" |
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#include "otypes.h" |
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#include "rpaint.h" |
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#include <ctype.h> |
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#define CTRL(c) ('c'-'@') |
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extern char *progname; |
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getframe(s) /* get a new frame */ |
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char *s; |
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{ |
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int x0, y0, x1, y1; |
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if (!strcmp("all", s)) { |
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pframe.l = pframe.d = 0; |
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pframe.r = ourview.hresolu; |
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pframe.u = ourview.vresolu; |
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pdepth = 0; |
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return; |
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} |
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if (sscanf(s, "%d %d %d %d", &x0, &y0, &x1, &y1) != 4) { |
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if (dev->getcur == NULL) |
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return; |
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(*dev->comout)("Pick first corner\n"); |
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if ((*dev->getcur)(&x0, &y0) == ABORT) |
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return; |
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(*dev->comout)("Pick second corner\n"); |
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if ((*dev->getcur)(&x1, &y1) == ABORT) |
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return; |
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} |
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if (x0 < x1) { |
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pframe.l = x0; |
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pframe.r = x1; |
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} else { |
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pframe.l = x1; |
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pframe.r = x0; |
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} |
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if (y0 < y1) { |
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pframe.d = y0; |
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pframe.u = y1; |
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} else { |
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pframe.d = y1; |
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pframe.u = y0; |
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} |
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if (pframe.l < 0) pframe.l = 0; |
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if (pframe.d < 0) pframe.d = 0; |
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if (pframe.r > ourview.hresolu) pframe.r = ourview.hresolu; |
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if (pframe.u > ourview.vresolu) pframe.u = ourview.vresolu; |
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greg |
1.9 |
if (pframe.l > pframe.r) pframe.l = pframe.r; |
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if (pframe.d > pframe.u) pframe.d = pframe.u; |
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greg |
1.1 |
pdepth = 0; |
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} |
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getview(s) /* get/show view parameters */ |
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char *s; |
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{ |
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FILE *fp; |
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char buf[128]; |
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greg |
1.10 |
char *fname; |
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greg |
1.3 |
int change = 0; |
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greg |
1.1 |
VIEW nv; |
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if (sscanf(s, "%s", buf) == 1) { /* write parameters to a file */ |
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greg |
1.10 |
if ((fname = getpath(buf, NULL, 0)) == NULL || |
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greg |
1.1 |
(fp = fopen(fname, "a")) == NULL) { |
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sprintf(errmsg, "cannot open \"%s\"", buf); |
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error(COMMAND, errmsg); |
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return; |
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} |
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greg |
1.2 |
fputs(progname, fp); |
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greg |
1.1 |
fprintview(&ourview, fp); |
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fputs("\n", fp); |
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fclose(fp); |
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return; |
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} |
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sprintf(buf, "view type (%c): ", ourview.type); |
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(*dev->comout)(buf); |
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(*dev->comin)(buf); |
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if (buf[0] == CTRL(C)) return; |
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greg |
1.3 |
if (buf[0] && buf[0] != ourview.type) { |
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greg |
1.1 |
nv.type = buf[0]; |
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greg |
1.3 |
change++; |
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} else |
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greg |
1.1 |
nv.type = ourview.type; |
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sprintf(buf, "view point (%.6g %.6g %.6g): ", |
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ourview.vp[0], ourview.vp[1], ourview.vp[2]); |
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(*dev->comout)(buf); |
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(*dev->comin)(buf); |
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if (buf[0] == CTRL(C)) return; |
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greg |
1.3 |
if (sscanf(buf, "%lf %lf %lf", &nv.vp[0], &nv.vp[1], &nv.vp[2]) == 3) |
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change++; |
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else |
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greg |
1.1 |
VCOPY(nv.vp, ourview.vp); |
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sprintf(buf, "view direction (%.6g %.6g %.6g): ", |
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ourview.vdir[0], ourview.vdir[1], ourview.vdir[2]); |
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(*dev->comout)(buf); |
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(*dev->comin)(buf); |
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if (buf[0] == CTRL(C)) return; |
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greg |
1.3 |
if (sscanf(buf,"%lf %lf %lf",&nv.vdir[0],&nv.vdir[1],&nv.vdir[2]) == 3) |
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change++; |
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else |
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greg |
1.1 |
VCOPY(nv.vdir, ourview.vdir); |
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sprintf(buf, "view up (%.6g %.6g %.6g): ", |
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ourview.vup[0], ourview.vup[1], ourview.vup[2]); |
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(*dev->comout)(buf); |
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(*dev->comin)(buf); |
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if (buf[0] == CTRL(C)) return; |
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greg |
1.3 |
if (sscanf(buf,"%lf %lf %lf",&nv.vup[0],&nv.vup[1],&nv.vup[2]) == 3) |
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change++; |
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else |
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greg |
1.1 |
VCOPY(nv.vup, ourview.vup); |
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sprintf(buf, "view horiz and vert size (%.6g %.6g): ", |
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ourview.horiz, ourview.vert); |
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(*dev->comout)(buf); |
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(*dev->comin)(buf); |
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if (buf[0] == CTRL(C)) return; |
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greg |
1.3 |
if (sscanf(buf, "%lf %lf", &nv.horiz, &nv.vert) == 2) |
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change++; |
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else { |
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greg |
1.1 |
nv.horiz = ourview.horiz; nv.vert = ourview.vert; |
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} |
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sprintf(buf, "x and y resolution (%d %d): ", |
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ourview.hresolu, ourview.vresolu); |
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(*dev->comout)(buf); |
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(*dev->comin)(buf); |
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if (buf[0] == CTRL(C)) return; |
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greg |
1.3 |
if (sscanf(buf, "%d %d", &nv.hresolu, &nv.vresolu) == 2) |
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change++; |
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else { |
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greg |
1.1 |
nv.hresolu = ourview.hresolu; nv.vresolu = ourview.vresolu; |
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} |
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greg |
1.3 |
if (change) |
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newview(&nv); |
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greg |
1.1 |
} |
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lastview(s) /* return to a previous view */ |
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char *s; |
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{ |
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char buf[128]; |
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greg |
1.10 |
char *fname; |
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greg |
1.1 |
int success; |
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VIEW nv; |
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if (sscanf(s, "%s", buf) == 1) { /* get parameters from a file */ |
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bcopy(&stdview, &nv, sizeof(VIEW)); |
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greg |
1.10 |
if ((fname = getpath(buf, NULL, 0)) == NULL || |
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greg |
1.1 |
(success = viewfile(fname, &nv)) == -1) { |
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sprintf(errmsg, "cannot open \"%s\"", buf); |
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error(COMMAND, errmsg); |
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return; |
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} |
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if (!success) |
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error(COMMAND, "wrong file format"); |
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else |
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newview(&nv); |
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return; |
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} |
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if (oldview.hresolu == 0) { /* no old view! */ |
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error(COMMAND, "no previous view"); |
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return; |
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} |
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bcopy(&ourview, &nv, sizeof(VIEW)); |
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bcopy(&oldview, &ourview, sizeof(VIEW)); |
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bcopy(&nv, &oldview, sizeof(VIEW)); |
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newimage(); |
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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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{ |
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int x, y; |
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RAY thisray; |
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register int i; |
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if (sscanf(s, "%lf", mp) != 1) |
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*mp = 1.0; |
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else if (*mp < -FTINY) /* negative zoom is reduction */ |
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*mp = -1.0 / *mp; |
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else if (*mp <= FTINY) { /* too small */ |
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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 (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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rayview(thisray.rorg, thisray.rdir, &ourview, x+.5, y+.5); |
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if (!direc || ourview.type == VT_PAR) { |
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rayorigin(&thisray, NULL, PRIMARY, 1.0); |
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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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} |
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} |
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if (direc) |
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if (ourview.type == VT_PAR) |
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for (i = 0; i < 3; i++) |
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vec[i] = thisray.rop[i] - ourview.vp[i]; |
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else |
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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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return(0); |
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} |
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getaim(s) /* aim camera */ |
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char *s; |
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{ |
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extern double tan(), atan(); |
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double zfact; |
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VIEW nv; |
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if (getinterest(s, 1, nv.vdir, &zfact) < 0) |
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return; |
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VCOPY(nv.vp, ourview.vp); |
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VCOPY(nv.vup, ourview.vup); |
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nv.hresolu = ourview.hresolu; nv.vresolu = ourview.vresolu; |
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if ((nv.type = ourview.type) == VT_PAR) { |
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nv.horiz = ourview.horiz / zfact; |
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nv.vert = ourview.vert / zfact; |
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} else { |
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nv.horiz = atan(tan(ourview.horiz*(PI/180./2.))/zfact) / |
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(PI/180./2.); |
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nv.vert = atan(tan(ourview.vert*(PI/180./2.))/zfact) / |
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(PI/180./2.); |
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} |
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newview(&nv); |
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} |
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getmove(s) /* move camera */ |
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char *s; |
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{ |
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FVECT vc; |
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double mag; |
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if (getinterest(s, 0, vc, &mag) < 0) |
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return; |
270 |
greg |
1.4 |
moveview(0.0, 0.0, mag, vc); |
271 |
greg |
1.1 |
} |
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getrotate(s) /* rotate camera */ |
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char *s; |
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{ |
277 |
greg |
1.4 |
extern double normalize(), tan(), atan(); |
278 |
greg |
1.1 |
VIEW nv; |
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FVECT v1; |
280 |
greg |
1.4 |
double angle, elev, zfact; |
281 |
greg |
1.1 |
|
282 |
greg |
1.4 |
elev = 0.0; zfact = 1.0; |
283 |
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if (sscanf(s, "%lf %lf %lf", &angle, &elev, &zfact) < 1) { |
284 |
greg |
1.1 |
error(COMMAND, "missing angle"); |
285 |
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return; |
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} |
287 |
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VCOPY(nv.vp, ourview.vp); |
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VCOPY(nv.vup, ourview.vup); |
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nv.hresolu = ourview.hresolu; nv.vresolu = ourview.vresolu; |
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spinvector(nv.vdir, ourview.vdir, ourview.vup, angle*(PI/180.)); |
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if (elev != 0.0) { |
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fcross(v1, nv.vdir, ourview.vup); |
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normalize(v1); |
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spinvector(nv.vdir, nv.vdir, v1, elev*(PI/180.)); |
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} |
296 |
greg |
1.4 |
if ((nv.type = ourview.type) == VT_PAR) { |
297 |
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nv.horiz = ourview.horiz / zfact; |
298 |
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nv.vert = ourview.vert / zfact; |
299 |
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} else { |
300 |
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nv.horiz = atan(tan(ourview.horiz*(PI/180./2.))/zfact) / |
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(PI/180./2.); |
302 |
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nv.vert = atan(tan(ourview.vert*(PI/180./2.))/zfact) / |
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(PI/180./2.); |
304 |
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} |
305 |
greg |
1.1 |
newview(&nv); |
306 |
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} |
307 |
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308 |
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309 |
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getpivot(s) /* pivot viewpoint */ |
310 |
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register char *s; |
311 |
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{ |
312 |
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FVECT vc; |
313 |
greg |
1.4 |
double angle, elev, mag; |
314 |
greg |
1.1 |
|
315 |
greg |
1.4 |
elev = 0.0; |
316 |
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if (sscanf(s, "%lf %lf", &angle, &elev) < 1) { |
317 |
greg |
1.1 |
error(COMMAND, "missing angle"); |
318 |
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return; |
319 |
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} |
320 |
greg |
1.4 |
if (getinterest(sskip(sskip(s)), 0, vc, &mag) < 0) |
321 |
greg |
1.1 |
return; |
322 |
greg |
1.4 |
moveview(angle, elev, mag, vc); |
323 |
greg |
1.1 |
} |
324 |
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325 |
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326 |
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getexposure(s) /* get new exposure */ |
327 |
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char *s; |
328 |
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{ |
329 |
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double atof(), pow(), fabs(); |
330 |
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char buf[128]; |
331 |
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register char *cp; |
332 |
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register PNODE *p; |
333 |
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RECT r; |
334 |
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int x, y; |
335 |
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double e; |
336 |
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337 |
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for (cp = s; isspace(*cp); cp++) |
338 |
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; |
339 |
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if (*cp == '\0') { /* normalize to point */ |
340 |
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if (dev->getcur == NULL) |
341 |
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return; |
342 |
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(*dev->comout)("Pick point for exposure\n"); |
343 |
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if ((*dev->getcur)(&x, &y) == ABORT) |
344 |
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return; |
345 |
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r.l = r.d = 0; |
346 |
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r.r = ourview.hresolu; r.u = ourview.vresolu; |
347 |
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p = findrect(x, y, &ptrunk, &r, -1); |
348 |
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e = 1.0; |
349 |
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} else { |
350 |
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if (*cp == '=') { /* absolute setting */ |
351 |
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p = NULL; |
352 |
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e = 1.0/exposure; |
353 |
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for (cp++; isspace(*cp); cp++) |
354 |
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; |
355 |
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if (*cp == '\0') { /* interactive */ |
356 |
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sprintf(buf, "exposure (%lf): ", exposure); |
357 |
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(*dev->comout)(buf); |
358 |
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(*dev->comin)(buf); |
359 |
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for (cp = buf; isspace(*cp); cp++) |
360 |
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; |
361 |
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if (*cp == '\0') |
362 |
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return; |
363 |
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} |
364 |
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} else { /* normalize to average */ |
365 |
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p = &ptrunk; |
366 |
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e = 1.0; |
367 |
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} |
368 |
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if (*cp == '+' || *cp == '-') /* f-stops */ |
369 |
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e *= pow(2.0, atof(cp)); |
370 |
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else /* multiplier */ |
371 |
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e *= atof(cp); |
372 |
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} |
373 |
|
|
if (p != NULL) { /* relative setting */ |
374 |
greg |
1.6 |
if (bright(p->v) <= FTINY) { |
375 |
greg |
1.1 |
error(COMMAND, "cannot normalize to zero"); |
376 |
|
|
return; |
377 |
|
|
} |
378 |
greg |
1.6 |
e *= 0.5 / bright(p->v); |
379 |
greg |
1.1 |
} |
380 |
|
|
if (e <= FTINY || fabs(1.0 - e) <= FTINY) |
381 |
|
|
return; |
382 |
|
|
scalepict(&ptrunk, e); |
383 |
|
|
exposure *= e; |
384 |
|
|
redraw(); |
385 |
|
|
} |
386 |
|
|
|
387 |
|
|
|
388 |
|
|
setparam(s) /* get/set program parameter */ |
389 |
|
|
register char *s; |
390 |
|
|
{ |
391 |
|
|
extern int psample; |
392 |
|
|
extern double maxdiff; |
393 |
|
|
extern double minweight; |
394 |
|
|
extern int maxdepth; |
395 |
|
|
extern double dstrsrc; |
396 |
greg |
1.5 |
extern double shadthresh; |
397 |
greg |
1.9 |
extern double shadcert; |
398 |
greg |
1.1 |
extern COLOR ambval; |
399 |
|
|
extern double ambacc; |
400 |
|
|
extern double minarad; |
401 |
|
|
extern int ambres; |
402 |
|
|
extern int ambdiv; |
403 |
|
|
extern int ambssamp; |
404 |
|
|
extern int ambounce; |
405 |
|
|
int i0; |
406 |
|
|
double d0, d1, d2; |
407 |
|
|
char buf[128]; |
408 |
|
|
|
409 |
|
|
if (s[0] == '\0') { |
410 |
greg |
1.9 |
(*dev->comout)("aa ab ad ar as av dc dj dt lr lw sp st: "); |
411 |
greg |
1.1 |
(*dev->comin)(buf); |
412 |
|
|
s = buf; |
413 |
|
|
} |
414 |
|
|
switch (s[0]) { |
415 |
|
|
case 'l': /* limit */ |
416 |
|
|
switch (s[1]) { |
417 |
|
|
case 'w': /* weight */ |
418 |
|
|
if (sscanf(s+2, "%lf", &d0) != 1) { |
419 |
|
|
sprintf(buf, "limit weight (%.6g): ", |
420 |
|
|
minweight); |
421 |
|
|
(*dev->comout)(buf); |
422 |
|
|
(*dev->comin)(buf); |
423 |
|
|
if (sscanf(buf, "%lf", &d0) != 1) |
424 |
|
|
break; |
425 |
|
|
} |
426 |
|
|
minweight = d0; |
427 |
|
|
break; |
428 |
|
|
case 'r': /* reflection */ |
429 |
|
|
if (sscanf(s+2, "%d", &i0) != 1) { |
430 |
|
|
sprintf(buf, "limit reflection (%d): ", |
431 |
|
|
maxdepth); |
432 |
|
|
(*dev->comout)(buf); |
433 |
|
|
(*dev->comin)(buf); |
434 |
|
|
if (sscanf(buf, "%d", &i0) != 1) |
435 |
|
|
break; |
436 |
|
|
} |
437 |
|
|
maxdepth = i0; |
438 |
|
|
break; |
439 |
|
|
default: |
440 |
|
|
goto badparam; |
441 |
|
|
} |
442 |
|
|
break; |
443 |
greg |
1.5 |
case 'd': /* direct */ |
444 |
|
|
switch (s[1]) { |
445 |
|
|
case 'j': /* jitter */ |
446 |
|
|
if (sscanf(s+2, "%lf", &d0) != 1) { |
447 |
|
|
sprintf(buf, "direct jitter (%.6g): ", |
448 |
|
|
dstrsrc); |
449 |
|
|
(*dev->comout)(buf); |
450 |
|
|
(*dev->comin)(buf); |
451 |
|
|
if (sscanf(buf, "%lf", &d0) != 1) |
452 |
|
|
break; |
453 |
|
|
} |
454 |
|
|
dstrsrc = d0; |
455 |
greg |
1.9 |
break; |
456 |
|
|
case 'c': /* certainty */ |
457 |
|
|
if (sscanf(s+2, "%lf", &d0) != 1) { |
458 |
|
|
sprintf(buf, "direct certainty (%.6g): ", |
459 |
|
|
shadcert); |
460 |
|
|
(*dev->comout)(buf); |
461 |
|
|
(*dev->comin)(buf); |
462 |
|
|
if (sscanf(buf, "%lf", &d0) != 1) |
463 |
|
|
break; |
464 |
|
|
} |
465 |
|
|
shadcert = d0; |
466 |
greg |
1.5 |
break; |
467 |
greg |
1.8 |
case 't': /* threshold */ |
468 |
greg |
1.5 |
if (sscanf(s+2, "%lf", &d0) != 1) { |
469 |
greg |
1.8 |
sprintf(buf, "direct threshold (%.6g): ", |
470 |
greg |
1.5 |
shadthresh); |
471 |
|
|
(*dev->comout)(buf); |
472 |
|
|
(*dev->comin)(buf); |
473 |
|
|
if (sscanf(buf, "%lf", &d0) != 1) |
474 |
|
|
break; |
475 |
|
|
} |
476 |
|
|
shadthresh = d0; |
477 |
|
|
break; |
478 |
|
|
default: |
479 |
greg |
1.1 |
goto badparam; |
480 |
|
|
} |
481 |
|
|
break; |
482 |
|
|
case 'a': /* ambient */ |
483 |
|
|
switch (s[1]) { |
484 |
|
|
case 'v': /* value */ |
485 |
|
|
if (sscanf(s+2, "%lf %lf %lf", &d0, &d1, &d2) != 3) { |
486 |
|
|
sprintf(buf, |
487 |
|
|
"ambient value (%.6g %.6g %.6g): ", |
488 |
|
|
colval(ambval,RED), |
489 |
|
|
colval(ambval,GRN), |
490 |
|
|
colval(ambval,BLU)); |
491 |
|
|
(*dev->comout)(buf); |
492 |
|
|
(*dev->comin)(buf); |
493 |
|
|
if (sscanf(buf, "%lf %lf %lf", |
494 |
|
|
&d0, &d1, &d2) != 3) |
495 |
|
|
break; |
496 |
|
|
} |
497 |
|
|
setcolor(ambval, d0, d1, d2); |
498 |
|
|
break; |
499 |
|
|
case 'a': /* accuracy */ |
500 |
|
|
if (sscanf(s+2, "%lf", &d0) != 1) { |
501 |
|
|
sprintf(buf, "ambient accuracy (%.6g): ", |
502 |
|
|
ambacc); |
503 |
|
|
(*dev->comout)(buf); |
504 |
|
|
(*dev->comin)(buf); |
505 |
|
|
if (sscanf(buf, "%lf", &d0) != 1) |
506 |
|
|
break; |
507 |
|
|
} |
508 |
|
|
ambacc = d0; |
509 |
|
|
break; |
510 |
|
|
case 'd': /* divisions */ |
511 |
|
|
if (sscanf(s+2, "%d", &i0) != 1) { |
512 |
|
|
sprintf(buf, "ambient divisions (%d): ", |
513 |
|
|
ambdiv); |
514 |
|
|
(*dev->comout)(buf); |
515 |
|
|
(*dev->comin)(buf); |
516 |
|
|
if (sscanf(buf, "%d", &i0) != 1) |
517 |
|
|
break; |
518 |
|
|
} |
519 |
|
|
ambdiv = i0; |
520 |
|
|
break; |
521 |
|
|
case 's': /* samples */ |
522 |
|
|
if (sscanf(s+2, "%d", &i0) != 1) { |
523 |
|
|
sprintf(buf, "ambient super-samples (%d): ", |
524 |
|
|
ambssamp); |
525 |
|
|
(*dev->comout)(buf); |
526 |
|
|
(*dev->comin)(buf); |
527 |
|
|
if (sscanf(buf, "%d", &i0) != 1) |
528 |
|
|
break; |
529 |
|
|
} |
530 |
|
|
ambssamp = i0; |
531 |
|
|
break; |
532 |
|
|
case 'b': /* bounces */ |
533 |
|
|
if (sscanf(s+2, "%d", &i0) != 1) { |
534 |
|
|
sprintf(buf, "ambient bounces (%d): ", |
535 |
|
|
ambounce); |
536 |
|
|
(*dev->comout)(buf); |
537 |
|
|
(*dev->comin)(buf); |
538 |
|
|
if (sscanf(buf, "%d", &i0) != 1) |
539 |
|
|
break; |
540 |
|
|
} |
541 |
|
|
ambounce = i0; |
542 |
|
|
break; |
543 |
|
|
case 'r': |
544 |
|
|
if (sscanf(s+2, "%d", &i0) != 1) { |
545 |
|
|
sprintf(buf, "ambient resolution (%d): ", |
546 |
|
|
ambres); |
547 |
|
|
(*dev->comout)(buf); |
548 |
|
|
(*dev->comin)(buf); |
549 |
|
|
if (sscanf(buf, "%d", &i0) != 1) |
550 |
|
|
break; |
551 |
|
|
} |
552 |
|
|
ambres = i0; |
553 |
|
|
minarad = ambres > 0 ? thescene.cusize/ambres : 0.0; |
554 |
|
|
break; |
555 |
|
|
default: |
556 |
|
|
goto badparam; |
557 |
|
|
} |
558 |
|
|
break; |
559 |
|
|
case 's': /* sample */ |
560 |
|
|
switch (s[1]) { |
561 |
|
|
case 'p': /* pixel */ |
562 |
|
|
if (sscanf(s+2, "%d", &i0) != 1) { |
563 |
|
|
sprintf(buf, "sample pixel (%d): ", psample); |
564 |
|
|
(*dev->comout)(buf); |
565 |
|
|
(*dev->comin)(buf); |
566 |
|
|
if (sscanf(buf, "%d", &i0) != 1) |
567 |
|
|
break; |
568 |
|
|
} |
569 |
|
|
psample = i0; |
570 |
|
|
pdepth = 0; |
571 |
|
|
break; |
572 |
greg |
1.8 |
case 't': /* threshold */ |
573 |
greg |
1.1 |
if (sscanf(s+2, "%lf", &d0) != 1) { |
574 |
greg |
1.8 |
sprintf(buf, "sample threshold (%.6g): ", |
575 |
greg |
1.1 |
maxdiff); |
576 |
|
|
(*dev->comout)(buf); |
577 |
|
|
(*dev->comin)(buf); |
578 |
|
|
if (sscanf(buf, "%lf", &d0) != 1) |
579 |
|
|
break; |
580 |
|
|
} |
581 |
|
|
maxdiff = d0; |
582 |
|
|
pdepth = 0; |
583 |
|
|
break; |
584 |
|
|
default: |
585 |
|
|
goto badparam; |
586 |
|
|
} |
587 |
|
|
break; |
588 |
|
|
case '\0': /* nothing */ |
589 |
|
|
break; |
590 |
|
|
default:; |
591 |
|
|
badparam: |
592 |
|
|
sprintf(errmsg, "%s: unknown variable", s); |
593 |
|
|
error(COMMAND, errmsg); |
594 |
|
|
break; |
595 |
|
|
} |
596 |
|
|
} |
597 |
|
|
|
598 |
|
|
|
599 |
|
|
traceray(s) /* trace a single ray */ |
600 |
|
|
char *s; |
601 |
|
|
{ |
602 |
|
|
char buf[128]; |
603 |
|
|
int x, y; |
604 |
|
|
RAY thisray; |
605 |
|
|
|
606 |
|
|
if (sscanf(s, "%lf %lf %lf %lf %lf %lf", |
607 |
|
|
&thisray.rorg[0], &thisray.rorg[1], &thisray.rorg[2], |
608 |
|
|
&thisray.rdir[0], &thisray.rdir[1], &thisray.rdir[2]) != 6) { |
609 |
|
|
|
610 |
|
|
if (dev->getcur == NULL) |
611 |
|
|
return; |
612 |
|
|
(*dev->comout)("Pick ray\n"); |
613 |
|
|
if ((*dev->getcur)(&x, &y) == ABORT) |
614 |
|
|
return; |
615 |
|
|
|
616 |
|
|
rayview(thisray.rorg, thisray.rdir, &ourview, x+.5, y+.5); |
617 |
|
|
|
618 |
|
|
} else if (normalize(thisray.rdir) == 0.0) { |
619 |
|
|
error(COMMAND, "zero ray direction"); |
620 |
|
|
return; |
621 |
|
|
} |
622 |
|
|
|
623 |
|
|
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
624 |
|
|
|
625 |
|
|
rayvalue(&thisray); |
626 |
|
|
|
627 |
|
|
if (thisray.ro == NULL) |
628 |
|
|
(*dev->comout)("ray hit nothing"); |
629 |
|
|
else { |
630 |
|
|
sprintf(buf, "ray hit %s %s \"%s\"", |
631 |
|
|
objptr(thisray.ro->omod)->oname, |
632 |
|
|
ofun[thisray.ro->otype].funame, |
633 |
|
|
thisray.ro->oname); |
634 |
|
|
(*dev->comout)(buf); |
635 |
|
|
(*dev->comin)(buf); |
636 |
|
|
if (thisray.rot >= FHUGE) |
637 |
|
|
(*dev->comout)("at infinity"); |
638 |
|
|
else { |
639 |
|
|
sprintf(buf, "at (%.6g %.6g %.6g)", thisray.rop[0], |
640 |
|
|
thisray.rop[1], thisray.rop[2]); |
641 |
|
|
(*dev->comout)(buf); |
642 |
|
|
} |
643 |
|
|
(*dev->comin)(buf); |
644 |
|
|
sprintf(buf, "with value (%.6g %.6g %.6g)", |
645 |
|
|
colval(thisray.rcol,RED), |
646 |
|
|
colval(thisray.rcol,GRN), |
647 |
|
|
colval(thisray.rcol,BLU)); |
648 |
|
|
(*dev->comout)(buf); |
649 |
|
|
} |
650 |
|
|
(*dev->comin)(buf); |
651 |
|
|
} |
652 |
|
|
|
653 |
|
|
|
654 |
|
|
writepict(s) /* write the picture to a file */ |
655 |
|
|
char *s; |
656 |
|
|
{ |
657 |
|
|
static char buf[128]; |
658 |
greg |
1.10 |
char *fname; |
659 |
greg |
1.1 |
FILE *fp; |
660 |
|
|
COLR *scanline; |
661 |
|
|
int y; |
662 |
|
|
|
663 |
|
|
if (sscanf(s, "%s", buf) != 1 && buf[0] == '\0') { |
664 |
|
|
error(COMMAND, "no file"); |
665 |
|
|
return; |
666 |
|
|
} |
667 |
greg |
1.10 |
if ((fname = getpath(buf, NULL, 0)) == NULL || |
668 |
greg |
1.1 |
(fp = fopen(fname, "w")) == NULL) { |
669 |
|
|
sprintf(errmsg, "cannot open \"%s\"", buf); |
670 |
|
|
error(COMMAND, errmsg); |
671 |
|
|
return; |
672 |
|
|
} |
673 |
|
|
(*dev->comout)("writing \""); |
674 |
|
|
(*dev->comout)(fname); |
675 |
|
|
(*dev->comout)("\"...\n"); |
676 |
|
|
/* write header */ |
677 |
|
|
fputs(progname, fp); |
678 |
|
|
fprintview(&ourview, fp); |
679 |
greg |
1.11 |
putc('\n', fp); |
680 |
greg |
1.1 |
if (exposure != 1.0) |
681 |
|
|
fprintf(fp, "EXPOSURE=%e\n", exposure); |
682 |
greg |
1.11 |
putc('\n', fp); |
683 |
|
|
fputresolu(YMAJOR|YDECR, ourview.hresolu, ourview.vresolu, fp); |
684 |
greg |
1.1 |
|
685 |
|
|
scanline = (COLR *)malloc(ourview.hresolu*sizeof(COLR)); |
686 |
|
|
if (scanline == NULL) |
687 |
|
|
error(SYSTEM, "out of memory in writepict"); |
688 |
|
|
for (y = ourview.vresolu-1; y >= 0; y--) { |
689 |
|
|
getpictcolrs(y, scanline, &ptrunk, |
690 |
|
|
ourview.hresolu, ourview.vresolu); |
691 |
|
|
if (fwritecolrs(scanline, ourview.hresolu, fp) < 0) |
692 |
|
|
break; |
693 |
|
|
} |
694 |
|
|
if (fclose(fp) < 0) |
695 |
|
|
error(COMMAND, "write error"); |
696 |
|
|
free((char *)scanline); |
697 |
|
|
} |