| 1 |
/* Copyright (c) 1987 Regents of the University of California */
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| 3 |
#ifndef lint
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| 4 |
static char SCCSid[] = "$SunId$ LBL";
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| 5 |
#endif
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| 6 |
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| 7 |
/*
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| 8 |
* rv2.c - command routines used in tracing a view.
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| 9 |
*
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| 10 |
* 3/24/87
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*/
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| 13 |
#include "ray.h"
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| 14 |
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| 15 |
#include "octree.h"
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| 16 |
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#include "otypes.h"
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| 19 |
#include "rpaint.h"
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#include <ctype.h>
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| 22 |
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| 23 |
#define CTRL(c) ('c'-'@')
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| 24 |
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| 25 |
extern char *progname;
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| 26 |
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| 27 |
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| 28 |
getframe(s) /* get a new frame */
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| 29 |
char *s;
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| 30 |
{
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| 31 |
if (getrect(s, &pframe) < 0)
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| 32 |
return;
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pdepth = 0;
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}
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getrepaint(s) /* get area and repaint */
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char *s;
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{
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RECT box;
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| 42 |
if (getrect(s, &box) < 0)
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| 43 |
return;
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| 44 |
paintrect(&ptrunk, 0, 0, hresolu, vresolu, &box);
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}
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| 48 |
getview(s) /* get/show view parameters */
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char *s;
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{
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| 51 |
FILE *fp;
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char buf[128];
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| 53 |
char *fname;
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int change = 0;
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VIEW nv;
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if (sscanf(s, "%s", buf) == 1) { /* write parameters to a file */
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| 58 |
if ((fname = getpath(buf, NULL, 0)) == NULL ||
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(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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fputs(progname, fp);
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fprintview(&ourview, fp);
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fputs(sskip(s), 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, NULL);
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if (buf[0] == CTRL(C)) return;
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if (buf[0] && buf[0] != ourview.type) {
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nv.type = buf[0];
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change++;
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} else
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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, NULL);
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if (buf[0] == CTRL(C)) return;
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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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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, NULL);
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if (buf[0] == CTRL(C)) return;
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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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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, NULL);
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if (buf[0] == CTRL(C)) return;
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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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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, NULL);
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if (buf[0] == CTRL(C)) return;
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if (sscanf(buf, "%lf %lf", &nv.horiz, &nv.vert) == 2)
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change++;
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else {
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nv.horiz = ourview.horiz; nv.vert = ourview.vert;
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}
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sprintf(buf, "view shift and lift (%.6g %.6g): ",
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| 118 |
ourview.hoff, ourview.voff);
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(*dev->comout)(buf);
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(*dev->comin)(buf, NULL);
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if (buf[0] == CTRL(C)) return;
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if (sscanf(buf, "%lf %lf", &nv.hoff, &nv.voff) == 2)
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change++;
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else {
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nv.hoff = ourview.hoff; nv.voff = ourview.voff;
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}
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| 127 |
if (change)
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newview(&nv);
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}
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| 131 |
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lastview(s) /* return to a previous view */
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char *s;
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| 134 |
{
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char buf[128];
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char *fname;
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| 137 |
int success;
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VIEW nv;
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| 140 |
if (sscanf(s, "%s", buf) == 1) { /* get parameters from a file */
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copystruct(&nv, &stdview);
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if ((fname = getpath(buf, NULL, 0)) == NULL ||
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(success = viewfile(fname, &nv, 0, 0)) == -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.type == 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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copystruct(&nv, &ourview);
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copystruct(&ourview, &oldview);
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copystruct(&oldview, &nv);
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newimage();
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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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| 169 |
double zfact;
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| 170 |
VIEW nv;
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if (getinterest(s, 1, nv.vdir, &zfact) < 0)
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return;
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nv.type = ourview.type;
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VCOPY(nv.vp, ourview.vp);
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| 176 |
VCOPY(nv.vup, ourview.vup);
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nv.hoff = ourview.hoff; nv.voff = ourview.voff;
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| 178 |
nv.horiz = ourview.horiz; nv.vert = ourview.vert;
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zoomview(&nv, zfact);
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| 180 |
newview(&nv);
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}
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| 183 |
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| 184 |
getmove(s) /* move camera */
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| 185 |
char *s;
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| 186 |
{
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FVECT vc;
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double mag;
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| 189 |
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| 190 |
if (getinterest(s, 0, vc, &mag) < 0)
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return;
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| 192 |
moveview(0.0, 0.0, mag, vc);
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}
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| 195 |
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| 196 |
getrotate(s) /* rotate camera */
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| 197 |
char *s;
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| 198 |
{
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| 199 |
extern double normalize(), tan(), atan();
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| 200 |
VIEW nv;
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| 201 |
FVECT v1;
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| 202 |
double angle, elev, zfact;
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| 203 |
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| 204 |
elev = 0.0; zfact = 1.0;
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| 205 |
if (sscanf(s, "%lf %lf %lf", &angle, &elev, &zfact) < 1) {
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error(COMMAND, "missing angle");
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| 207 |
return;
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| 208 |
}
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| 209 |
nv.type = ourview.type;
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| 210 |
VCOPY(nv.vp, ourview.vp);
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| 211 |
VCOPY(nv.vup, ourview.vup);
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nv.hoff = ourview.hoff; nv.voff = ourview.voff;
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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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}
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nv.horiz = ourview.horiz; nv.vert = ourview.vert;
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zoomview(&nv, zfact);
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newview(&nv);
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}
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| 224 |
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getpivot(s) /* pivot viewpoint */
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| 226 |
register char *s;
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| 227 |
{
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| 228 |
FVECT vc;
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double angle, elev, mag;
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| 230 |
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| 231 |
elev = 0.0;
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if (sscanf(s, "%lf %lf", &angle, &elev) < 1) {
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| 233 |
error(COMMAND, "missing angle");
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return;
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}
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| 236 |
if (getinterest(sskip(sskip(s)), 0, vc, &mag) < 0)
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return;
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moveview(angle, elev, mag, vc);
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}
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| 241 |
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| 242 |
getexposure(s) /* get new exposure */
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| 243 |
char *s;
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| 244 |
{
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| 245 |
double atof(), pow(), fabs();
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char buf[128];
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| 247 |
register char *cp;
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| 248 |
register PNODE *p;
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| 249 |
RECT r;
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| 250 |
int x, y;
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| 251 |
double e;
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| 252 |
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| 253 |
for (cp = s; isspace(*cp); cp++)
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;
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| 255 |
if (*cp == '\0') { /* normalize to point */
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| 256 |
if (dev->getcur == NULL)
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| 257 |
return;
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| 258 |
(*dev->comout)("Pick point for exposure\n");
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| 259 |
if ((*dev->getcur)(&x, &y) == ABORT)
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| 260 |
return;
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| 261 |
r.l = r.d = 0;
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| 262 |
r.r = hresolu; r.u = vresolu;
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| 263 |
p = findrect(x, y, &ptrunk, &r, -1);
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| 264 |
e = 1.0;
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| 265 |
} else {
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| 266 |
if (*cp == '=') { /* absolute setting */
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| 267 |
p = NULL;
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| 268 |
e = 1.0/exposure;
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| 269 |
for (cp++; isspace(*cp); cp++)
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| 270 |
;
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| 271 |
if (*cp == '\0') { /* interactive */
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| 272 |
sprintf(buf, "exposure (%lf): ", exposure);
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| 273 |
(*dev->comout)(buf);
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| 274 |
(*dev->comin)(buf, NULL);
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| 275 |
for (cp = buf; isspace(*cp); cp++)
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| 276 |
;
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| 277 |
if (*cp == '\0')
|
| 278 |
return;
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| 279 |
}
|
| 280 |
} else { /* normalize to average */
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| 281 |
p = &ptrunk;
|
| 282 |
e = 1.0;
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| 283 |
}
|
| 284 |
if (*cp == '+' || *cp == '-') /* f-stops */
|
| 285 |
e *= pow(2.0, atof(cp));
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| 286 |
else /* multiplier */
|
| 287 |
e *= atof(cp);
|
| 288 |
}
|
| 289 |
if (p != NULL) { /* relative setting */
|
| 290 |
if (bright(p->v) <= FTINY) {
|
| 291 |
error(COMMAND, "cannot normalize to zero");
|
| 292 |
return;
|
| 293 |
}
|
| 294 |
e *= 0.5 / bright(p->v);
|
| 295 |
}
|
| 296 |
if (e <= FTINY || fabs(1.0 - e) <= FTINY)
|
| 297 |
return;
|
| 298 |
scalepict(&ptrunk, e);
|
| 299 |
exposure *= e;
|
| 300 |
redraw();
|
| 301 |
}
|
| 302 |
|
| 303 |
|
| 304 |
setparam(s) /* get/set program parameter */
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| 305 |
register char *s;
|
| 306 |
{
|
| 307 |
extern int psample;
|
| 308 |
extern double maxdiff;
|
| 309 |
extern double minweight;
|
| 310 |
extern int maxdepth;
|
| 311 |
extern double dstrsrc;
|
| 312 |
extern double shadthresh;
|
| 313 |
extern double shadcert;
|
| 314 |
extern COLOR ambval;
|
| 315 |
extern double ambacc;
|
| 316 |
extern double minarad;
|
| 317 |
extern int ambres;
|
| 318 |
extern int ambdiv;
|
| 319 |
extern int ambssamp;
|
| 320 |
extern int ambounce;
|
| 321 |
extern int directinvis;
|
| 322 |
extern int do_irrad;
|
| 323 |
int i0;
|
| 324 |
double d0, d1, d2;
|
| 325 |
char buf[128], ans[4];
|
| 326 |
|
| 327 |
if (s[0] == '\0') {
|
| 328 |
(*dev->comout)(
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| 329 |
"aa ab ad ar as av b dc dj di dt i lr lw sp st: ");
|
| 330 |
(*dev->comin)(buf, NULL);
|
| 331 |
s = buf;
|
| 332 |
}
|
| 333 |
switch (s[0]) {
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| 334 |
case 'l': /* limit */
|
| 335 |
switch (s[1]) {
|
| 336 |
case 'w': /* weight */
|
| 337 |
if (sscanf(s+2, "%lf", &d0) != 1) {
|
| 338 |
sprintf(buf, "limit weight (%.6g): ",
|
| 339 |
minweight);
|
| 340 |
(*dev->comout)(buf);
|
| 341 |
(*dev->comin)(buf, NULL);
|
| 342 |
if (sscanf(buf, "%lf", &d0) != 1)
|
| 343 |
break;
|
| 344 |
}
|
| 345 |
minweight = d0;
|
| 346 |
break;
|
| 347 |
case 'r': /* reflection */
|
| 348 |
if (sscanf(s+2, "%d", &i0) != 1) {
|
| 349 |
sprintf(buf, "limit reflection (%d): ",
|
| 350 |
maxdepth);
|
| 351 |
(*dev->comout)(buf);
|
| 352 |
(*dev->comin)(buf, NULL);
|
| 353 |
if (sscanf(buf, "%d", &i0) != 1)
|
| 354 |
break;
|
| 355 |
}
|
| 356 |
maxdepth = i0;
|
| 357 |
break;
|
| 358 |
default:
|
| 359 |
goto badparam;
|
| 360 |
}
|
| 361 |
break;
|
| 362 |
case 'd': /* direct */
|
| 363 |
switch (s[1]) {
|
| 364 |
case 'j': /* jitter */
|
| 365 |
if (sscanf(s+2, "%lf", &d0) != 1) {
|
| 366 |
sprintf(buf, "direct jitter (%.6g): ",
|
| 367 |
dstrsrc);
|
| 368 |
(*dev->comout)(buf);
|
| 369 |
(*dev->comin)(buf, NULL);
|
| 370 |
if (sscanf(buf, "%lf", &d0) != 1)
|
| 371 |
break;
|
| 372 |
}
|
| 373 |
dstrsrc = d0;
|
| 374 |
break;
|
| 375 |
case 'c': /* certainty */
|
| 376 |
if (sscanf(s+2, "%lf", &d0) != 1) {
|
| 377 |
sprintf(buf, "direct certainty (%.6g): ",
|
| 378 |
shadcert);
|
| 379 |
(*dev->comout)(buf);
|
| 380 |
(*dev->comin)(buf, NULL);
|
| 381 |
if (sscanf(buf, "%lf", &d0) != 1)
|
| 382 |
break;
|
| 383 |
}
|
| 384 |
shadcert = d0;
|
| 385 |
break;
|
| 386 |
case 't': /* threshold */
|
| 387 |
if (sscanf(s+2, "%lf", &d0) != 1) {
|
| 388 |
sprintf(buf, "direct threshold (%.6g): ",
|
| 389 |
shadthresh);
|
| 390 |
(*dev->comout)(buf);
|
| 391 |
(*dev->comin)(buf, NULL);
|
| 392 |
if (sscanf(buf, "%lf", &d0) != 1)
|
| 393 |
break;
|
| 394 |
}
|
| 395 |
shadthresh = d0;
|
| 396 |
break;
|
| 397 |
case 'i': /* invisibility */
|
| 398 |
if (sscanf(s+2, "%1s", ans) != 1) {
|
| 399 |
sprintf(buf, "direct invisibility (%c): ",
|
| 400 |
directinvis ? 'y' : 'n');
|
| 401 |
(*dev->comout)(buf);
|
| 402 |
(*dev->comin)(buf, NULL);
|
| 403 |
if (sscanf(buf, "%1s", ans) != 1)
|
| 404 |
break;
|
| 405 |
}
|
| 406 |
directinvis = tolower(ans[0]) == 'y';
|
| 407 |
break;
|
| 408 |
default:
|
| 409 |
goto badparam;
|
| 410 |
}
|
| 411 |
break;
|
| 412 |
case 'b': /* black and white */
|
| 413 |
if (sscanf(s+1, "%1s", ans) != 1) {
|
| 414 |
sprintf(buf, "black and white (%c): ",
|
| 415 |
greyscale ? 'y' : 'n');
|
| 416 |
(*dev->comout)(buf);
|
| 417 |
(*dev->comin)(buf, NULL);
|
| 418 |
if (sscanf(buf, "%1s", ans) != 1)
|
| 419 |
break;
|
| 420 |
}
|
| 421 |
greyscale = tolower(ans[0]) == 'y';
|
| 422 |
break;
|
| 423 |
case 'i': /* irradiance */
|
| 424 |
if (sscanf(s+1, "%1s", ans) != 1) {
|
| 425 |
sprintf(buf, "irradiance (%c): ",
|
| 426 |
do_irrad ? 'y' : 'n');
|
| 427 |
(*dev->comout)(buf);
|
| 428 |
(*dev->comin)(buf, NULL);
|
| 429 |
if (sscanf(buf, "%1s", ans) != 1)
|
| 430 |
break;
|
| 431 |
}
|
| 432 |
do_irrad = tolower(ans[0]) == 'y';
|
| 433 |
break;
|
| 434 |
case 'a': /* ambient */
|
| 435 |
switch (s[1]) {
|
| 436 |
case 'v': /* value */
|
| 437 |
if (sscanf(s+2, "%lf %lf %lf", &d0, &d1, &d2) != 3) {
|
| 438 |
sprintf(buf,
|
| 439 |
"ambient value (%.6g %.6g %.6g): ",
|
| 440 |
colval(ambval,RED),
|
| 441 |
colval(ambval,GRN),
|
| 442 |
colval(ambval,BLU));
|
| 443 |
(*dev->comout)(buf);
|
| 444 |
(*dev->comin)(buf, NULL);
|
| 445 |
if (sscanf(buf, "%lf %lf %lf",
|
| 446 |
&d0, &d1, &d2) != 3)
|
| 447 |
break;
|
| 448 |
}
|
| 449 |
setcolor(ambval, d0, d1, d2);
|
| 450 |
break;
|
| 451 |
case 'a': /* accuracy */
|
| 452 |
if (sscanf(s+2, "%lf", &d0) != 1) {
|
| 453 |
sprintf(buf, "ambient accuracy (%.6g): ",
|
| 454 |
ambacc);
|
| 455 |
(*dev->comout)(buf);
|
| 456 |
(*dev->comin)(buf, NULL);
|
| 457 |
if (sscanf(buf, "%lf", &d0) != 1)
|
| 458 |
break;
|
| 459 |
}
|
| 460 |
ambacc = d0;
|
| 461 |
break;
|
| 462 |
case 'd': /* divisions */
|
| 463 |
if (sscanf(s+2, "%d", &i0) != 1) {
|
| 464 |
sprintf(buf, "ambient divisions (%d): ",
|
| 465 |
ambdiv);
|
| 466 |
(*dev->comout)(buf);
|
| 467 |
(*dev->comin)(buf, NULL);
|
| 468 |
if (sscanf(buf, "%d", &i0) != 1)
|
| 469 |
break;
|
| 470 |
}
|
| 471 |
ambdiv = i0;
|
| 472 |
break;
|
| 473 |
case 's': /* samples */
|
| 474 |
if (sscanf(s+2, "%d", &i0) != 1) {
|
| 475 |
sprintf(buf, "ambient super-samples (%d): ",
|
| 476 |
ambssamp);
|
| 477 |
(*dev->comout)(buf);
|
| 478 |
(*dev->comin)(buf, NULL);
|
| 479 |
if (sscanf(buf, "%d", &i0) != 1)
|
| 480 |
break;
|
| 481 |
}
|
| 482 |
ambssamp = i0;
|
| 483 |
break;
|
| 484 |
case 'b': /* bounces */
|
| 485 |
if (sscanf(s+2, "%d", &i0) != 1) {
|
| 486 |
sprintf(buf, "ambient bounces (%d): ",
|
| 487 |
ambounce);
|
| 488 |
(*dev->comout)(buf);
|
| 489 |
(*dev->comin)(buf, NULL);
|
| 490 |
if (sscanf(buf, "%d", &i0) != 1)
|
| 491 |
break;
|
| 492 |
}
|
| 493 |
ambounce = i0;
|
| 494 |
break;
|
| 495 |
case 'r':
|
| 496 |
if (sscanf(s+2, "%d", &i0) != 1) {
|
| 497 |
sprintf(buf, "ambient resolution (%d): ",
|
| 498 |
ambres);
|
| 499 |
(*dev->comout)(buf);
|
| 500 |
(*dev->comin)(buf, NULL);
|
| 501 |
if (sscanf(buf, "%d", &i0) != 1)
|
| 502 |
break;
|
| 503 |
}
|
| 504 |
ambres = i0;
|
| 505 |
minarad = ambres > 0 ? thescene.cusize/ambres : 0.0;
|
| 506 |
break;
|
| 507 |
default:
|
| 508 |
goto badparam;
|
| 509 |
}
|
| 510 |
break;
|
| 511 |
case 's': /* sample */
|
| 512 |
switch (s[1]) {
|
| 513 |
case 'p': /* pixel */
|
| 514 |
if (sscanf(s+2, "%d", &i0) != 1) {
|
| 515 |
sprintf(buf, "sample pixel (%d): ", psample);
|
| 516 |
(*dev->comout)(buf);
|
| 517 |
(*dev->comin)(buf, NULL);
|
| 518 |
if (sscanf(buf, "%d", &i0) != 1)
|
| 519 |
break;
|
| 520 |
}
|
| 521 |
psample = i0;
|
| 522 |
pdepth = 0;
|
| 523 |
break;
|
| 524 |
case 't': /* threshold */
|
| 525 |
if (sscanf(s+2, "%lf", &d0) != 1) {
|
| 526 |
sprintf(buf, "sample threshold (%.6g): ",
|
| 527 |
maxdiff);
|
| 528 |
(*dev->comout)(buf);
|
| 529 |
(*dev->comin)(buf, NULL);
|
| 530 |
if (sscanf(buf, "%lf", &d0) != 1)
|
| 531 |
break;
|
| 532 |
}
|
| 533 |
maxdiff = d0;
|
| 534 |
pdepth = 0;
|
| 535 |
break;
|
| 536 |
default:
|
| 537 |
goto badparam;
|
| 538 |
}
|
| 539 |
break;
|
| 540 |
case '\0': /* nothing */
|
| 541 |
break;
|
| 542 |
default:;
|
| 543 |
badparam:
|
| 544 |
sprintf(errmsg, "%s: unknown variable", s);
|
| 545 |
error(COMMAND, errmsg);
|
| 546 |
break;
|
| 547 |
}
|
| 548 |
}
|
| 549 |
|
| 550 |
|
| 551 |
traceray(s) /* trace a single ray */
|
| 552 |
char *s;
|
| 553 |
{
|
| 554 |
char buf[128];
|
| 555 |
int x, y;
|
| 556 |
RAY thisray;
|
| 557 |
|
| 558 |
if (sscanf(s, "%lf %lf %lf %lf %lf %lf",
|
| 559 |
&thisray.rorg[0], &thisray.rorg[1], &thisray.rorg[2],
|
| 560 |
&thisray.rdir[0], &thisray.rdir[1], &thisray.rdir[2]) != 6) {
|
| 561 |
|
| 562 |
if (dev->getcur == NULL)
|
| 563 |
return;
|
| 564 |
(*dev->comout)("Pick ray\n");
|
| 565 |
if ((*dev->getcur)(&x, &y) == ABORT)
|
| 566 |
return;
|
| 567 |
|
| 568 |
if (viewray(thisray.rorg, thisray.rdir, &ourview,
|
| 569 |
(x+.5)/hresolu, (y+.5)/vresolu) < 0) {
|
| 570 |
error(COMMAND, "not on image");
|
| 571 |
return;
|
| 572 |
}
|
| 573 |
|
| 574 |
} else if (normalize(thisray.rdir) == 0.0) {
|
| 575 |
error(COMMAND, "zero ray direction");
|
| 576 |
return;
|
| 577 |
}
|
| 578 |
|
| 579 |
rayorigin(&thisray, NULL, PRIMARY, 1.0);
|
| 580 |
|
| 581 |
rayvalue(&thisray);
|
| 582 |
|
| 583 |
if (thisray.ro == NULL)
|
| 584 |
(*dev->comout)("ray hit nothing");
|
| 585 |
else {
|
| 586 |
sprintf(buf, "ray hit %s %s \"%s\"",
|
| 587 |
objptr(thisray.ro->omod)->oname,
|
| 588 |
ofun[thisray.ro->otype].funame,
|
| 589 |
thisray.ro->oname);
|
| 590 |
(*dev->comout)(buf);
|
| 591 |
(*dev->comin)(buf, NULL);
|
| 592 |
if (thisray.rot >= FHUGE)
|
| 593 |
(*dev->comout)("at infinity");
|
| 594 |
else {
|
| 595 |
sprintf(buf, "at (%.6g %.6g %.6g)", thisray.rop[0],
|
| 596 |
thisray.rop[1], thisray.rop[2]);
|
| 597 |
(*dev->comout)(buf);
|
| 598 |
}
|
| 599 |
(*dev->comin)(buf, NULL);
|
| 600 |
sprintf(buf, "with value (%.6g %.6g %.6g)",
|
| 601 |
colval(thisray.rcol,RED),
|
| 602 |
colval(thisray.rcol,GRN),
|
| 603 |
colval(thisray.rcol,BLU));
|
| 604 |
(*dev->comout)(buf);
|
| 605 |
}
|
| 606 |
(*dev->comin)(buf, NULL);
|
| 607 |
}
|
| 608 |
|
| 609 |
|
| 610 |
writepict(s) /* write the picture to a file */
|
| 611 |
char *s;
|
| 612 |
{
|
| 613 |
static char buf[128];
|
| 614 |
char *fname;
|
| 615 |
FILE *fp;
|
| 616 |
COLR *scanline;
|
| 617 |
int y;
|
| 618 |
|
| 619 |
if (sscanf(s, "%s", buf) != 1 && buf[0] == '\0') {
|
| 620 |
error(COMMAND, "no file");
|
| 621 |
return;
|
| 622 |
}
|
| 623 |
if ((fname = getpath(buf, NULL, 0)) == NULL ||
|
| 624 |
(fp = fopen(fname, "w")) == NULL) {
|
| 625 |
sprintf(errmsg, "cannot open \"%s\"", buf);
|
| 626 |
error(COMMAND, errmsg);
|
| 627 |
return;
|
| 628 |
}
|
| 629 |
(*dev->comout)("writing \"");
|
| 630 |
(*dev->comout)(fname);
|
| 631 |
(*dev->comout)("\"...\n");
|
| 632 |
/* write header */
|
| 633 |
fputs(progname, fp);
|
| 634 |
fprintview(&ourview, fp);
|
| 635 |
putc('\n', fp);
|
| 636 |
if (exposure != 1.0)
|
| 637 |
fputexpos(exposure, fp);
|
| 638 |
if (dev->pixaspect != 1.0)
|
| 639 |
fputaspect(dev->pixaspect, fp);
|
| 640 |
fputformat(COLRFMT, fp);
|
| 641 |
putc('\n', fp);
|
| 642 |
fputresolu(YMAJOR|YDECR, hresolu, vresolu, fp);
|
| 643 |
|
| 644 |
scanline = (COLR *)malloc(hresolu*sizeof(COLR));
|
| 645 |
if (scanline == NULL)
|
| 646 |
error(SYSTEM, "out of memory in writepict");
|
| 647 |
for (y = vresolu-1; y >= 0; y--) {
|
| 648 |
getpictcolrs(y, scanline, &ptrunk, hresolu, vresolu);
|
| 649 |
if (fwritecolrs(scanline, hresolu, fp) < 0)
|
| 650 |
break;
|
| 651 |
}
|
| 652 |
if (fclose(fp) < 0)
|
| 653 |
error(COMMAND, "write error");
|
| 654 |
free((char *)scanline);
|
| 655 |
}
|
