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#ifndef lint |
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< |
static const char RCSid[] = "$Id"; |
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> |
static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* rpict.c - routines and variables for picture generation. |
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#include <sys/types.h> |
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|
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#ifndef NON_POSIX |
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#ifdef BSD |
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#include <sys/time.h> |
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#include <sys/resource.h> |
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#include "platform.h" |
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#ifdef NON_POSIX |
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#ifdef MINGW |
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#include <sys/time.h> |
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> |
#endif |
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#else |
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#include <sys/times.h> |
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#include <unistd.h> |
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#ifdef BSD |
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> |
#include <sys/time.h> |
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> |
#include <sys/resource.h> |
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> |
#else |
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#include <sys/times.h> |
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#include <unistd.h> |
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#endif |
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#endif |
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#endif |
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#include <time.h> |
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#include <signal.h> |
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#include "platform.h" |
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#include "ray.h" |
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#include "paths.h" |
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#include "ambient.h" |
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#include "view.h" |
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#include "random.h" |
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#include "paths.h" |
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#include "rtmisc.h" /* myhostname() */ |
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> |
#include "hilbert.h" |
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|
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|
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#define RFTEMPLATE "rfXXXXXX" |
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int ndims = 0; /* number of sampling dimensions */ |
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int samplendx; /* sample index number */ |
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|
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//extern void ambnotify(); |
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void (*addobjnotify[])() = {ambnotify, NULL}; |
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|
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VIEW ourview = STDVIEW; /* view parameters */ |
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|
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double mblur = 0.; /* motion blur parameter */ |
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|
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double dblur = 0.; /* depth-of-field blur parameter */ |
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|
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void (*trace)() = NULL; /* trace call */ |
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|
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int do_irrad = 0; /* compute irradiance? */ |
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|
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int rand_samp = 0; /* pure Monte Carlo sampling? */ |
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|
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double dstrsrc = 0.0; /* square source distribution */ |
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double shadthresh = .05; /* shadow threshold */ |
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double shadcert = .5; /* shadow certainty */ |
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int backvis = 1; /* back face visibility */ |
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|
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int maxdepth = 7; /* maximum recursion depth */ |
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double minweight = 4e-3; /* minimum ray weight */ |
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double minweight = 1e-3; /* minimum ray weight */ |
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|
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char *ambfile = NULL; /* ambient file name */ |
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COLOR ambval = BLKCOLOR; /* ambient value */ |
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int ambdiv = 512; /* ambient divisions */ |
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int ambssamp = 128; /* ambient super-samples */ |
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int ambounce = 0; /* ambient bounces */ |
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char *amblist[128]; /* ambient include/exclude list */ |
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char *amblist[AMBLLEN]; /* ambient include/exclude list */ |
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int ambincl = -1; /* include == 1, exclude == 0 */ |
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|
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int ralrm = 0; /* seconds between reports */ |
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|
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static VIEW lastview; /* the previous view input */ |
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|
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//extern char *mktemp(); /* XXX should be in stdlib.h or unistd.h */ |
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|
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//double pixvalue(); |
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|
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static void report(int); |
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static int nextview(FILE *fp); |
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static void render(char *zfile, char *oldfile); |
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static void |
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report(int dummy) /* report progress */ |
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{ |
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double u, s; |
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double u, s; |
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#ifdef BSD |
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struct rusage rubuf; |
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struct rusage rubuf; |
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#else |
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struct tms tbuf; |
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double period; |
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double period = 1.0 / 60.0; |
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struct tms tbuf; |
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#endif |
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|
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tlastrept = time((time_t *)NULL); |
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#ifdef BSD |
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getrusage(RUSAGE_SELF, &rubuf); |
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u = rubuf.ru_utime.tv_sec + rubuf.ru_utime.tv_usec/1e6; |
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s = rubuf.ru_stime.tv_sec + rubuf.ru_stime.tv_usec/1e6; |
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u = rubuf.ru_utime.tv_sec + rubuf.ru_utime.tv_usec*1e-6; |
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s = rubuf.ru_stime.tv_sec + rubuf.ru_stime.tv_usec*1e-6; |
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getrusage(RUSAGE_CHILDREN, &rubuf); |
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u += rubuf.ru_utime.tv_sec + rubuf.ru_utime.tv_usec/1e6; |
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s += rubuf.ru_stime.tv_sec + rubuf.ru_stime.tv_usec/1e6; |
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u += rubuf.ru_utime.tv_sec + rubuf.ru_utime.tv_usec*1e-6; |
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s += rubuf.ru_stime.tv_sec + rubuf.ru_stime.tv_usec*1e-6; |
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#else |
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times(&tbuf); |
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#ifdef _SC_CLK_TCK |
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period = 1.0 / sysconf(_SC_CLK_TCK); |
187 |
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#else |
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period = 1.0 / 60.0; |
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#endif |
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u = ( tbuf.tms_utime + tbuf.tms_cutime ) * period; |
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s = ( tbuf.tms_stime + tbuf.tms_cstime ) * period; |
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#endif |
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|
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sprintf(errmsg, |
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"%lu rays, %4.2f%% after %.3fu %.3fs %.3fr hours on %s\n", |
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nrays, pctdone, u/3600., s/3600., |
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(tlastrept-tstart)/3600., myhostname()); |
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"%lu rays, %4.2f%% after %.3fu %.3fs %.3fr hours on %s (PID %d)\n", |
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nrays, pctdone, u*(1./3600.), s*(1./3600.), |
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(tlastrept-tstart)*(1./3600.), myhostname(), getpid()); |
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eputs(errmsg); |
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#ifdef SIGCONT |
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signal(SIGCONT, report); |
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} |
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#else |
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static void |
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report(int) /* report progress */ |
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report(int dummy) /* report progress */ |
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{ |
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tlastrept = time((time_t *)NULL); |
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sprintf(errmsg, "%lu rays, %4.2f%% after %5.4f hours\n", |
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#endif |
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extern void |
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void |
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rpict( /* generate image(s) */ |
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int seq, |
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char *pout, |
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{ |
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char fbuf[128], fbuf2[128]; |
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int npicts; |
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register char *cp; |
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> |
char *cp; |
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RESOLU rs; |
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double pa; |
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/* check sampling */ |
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if (seq <= 0) |
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seq = 0; |
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else if (prvr != NULL && isint(prvr)) { |
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register int rn; /* skip to specified view */ |
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int rn; /* skip to specified view */ |
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if ((rn = atoi(prvr)) < seq) |
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error(USER, "recover frame less than start frame"); |
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if (pout == NULL) |
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fputs(VIEWSTR, stdout); |
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fprintview(&ourview, stdout); |
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putchar('\n'); |
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if (pa < .99 || pa > 1.01) |
342 |
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if ((pa < .99) | (pa > 1.01)) |
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fputaspect(pa, stdout); |
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fputnow(stdout); |
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fputformat(COLRFMT, stdout); |
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int zfd; |
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COLOR *colptr; |
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float *zptr; |
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register int i; |
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int i; |
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/* check for empty image */ |
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if (hres <= 0 || vres <= 0) { |
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if ((hres <= 0) | (vres <= 0)) { |
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error(WARNING, "empty output picture"); |
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fprtresolu(0, 0, stdout); |
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return; |
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i = salvage(oldfile); |
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if (i >= vres) |
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goto alldone; |
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if (zfd != -1 && i > 0 && |
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if ((zfd != -1) & (i > 0) && |
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lseek(zfd, (off_t)i*hres*sizeof(float), SEEK_SET) < 0) |
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error(SYSTEM, "z-file seek error in render"); |
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pctdone = 100.0*i/vres; |
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|
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static void |
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fillscanline( /* fill scan at y */ |
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register COLOR *scanline, |
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register float *zline, |
533 |
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register char *sd, |
531 |
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COLOR *scanline, |
532 |
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float *zline, |
533 |
> |
char *sd, |
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int xres, |
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int y, |
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int xstep |
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static int nc = 0; /* number of calls */ |
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int bl = xstep, b = xstep; |
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double z; |
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register int i; |
542 |
> |
int i; |
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|
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z = pixvalue(scanline[0], 0, y); |
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if (zline) zline[0] = z; |
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|
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static void |
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fillscanbar( /* fill interior */ |
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register COLOR *scanbar[], |
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register float *zbar[], |
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> |
COLOR *scanbar[], |
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> |
float *zbar[], |
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int xres, |
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int y, |
574 |
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int ysize |
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COLOR vline[MAXDIV+1]; |
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float zline[MAXDIV+1]; |
579 |
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int b = ysize; |
580 |
< |
register int i, j; |
580 |
> |
int i, j; |
581 |
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|
582 |
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for (i = 0; i < xres; i++) { |
583 |
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copycolor(vline[0], scanbar[0][i]); |
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|
601 |
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static int |
602 |
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fillsample( /* fill interior points */ |
603 |
< |
register COLOR *colline, |
604 |
< |
register float *zline, |
603 |
> |
COLOR *colline, |
604 |
> |
float *zline, |
605 |
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int x, |
606 |
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int y, |
607 |
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int xlen, |
613 |
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double z; |
614 |
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COLOR ctmp; |
615 |
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int ncut; |
616 |
< |
register int len; |
616 |
> |
int len; |
617 |
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|
618 |
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if (xlen > 0) /* x or y length is zero */ |
619 |
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len = xlen; |
661 |
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int y |
662 |
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) |
663 |
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{ |
664 |
+ |
extern void SDsquare2disk(double ds[2], double seedx, double seedy); |
665 |
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RAY thisray; |
666 |
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FVECT lorg, ldir; |
667 |
< |
double hpos, vpos, lmax; |
667 |
> |
double hpos, vpos, vdist, lmax; |
668 |
> |
int i; |
669 |
|
/* compute view ray */ |
670 |
+ |
setcolor(col, 0.0, 0.0, 0.0); |
671 |
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hpos = (x+pixjitter())/hres; |
672 |
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vpos = (y+pixjitter())/vres; |
673 |
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if ((thisray.rmax = viewray(thisray.rorg, thisray.rdir, |
674 |
< |
&ourview, hpos, vpos)) < -FTINY) { |
671 |
< |
setcolor(col, 0.0, 0.0, 0.0); |
674 |
> |
&ourview, hpos, vpos)) < -FTINY) |
675 |
|
return(0.0); |
673 |
– |
} |
676 |
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|
677 |
< |
samplendx = pixnumber(x,y,hres,vres); /* set pixel index */ |
678 |
< |
|
677 |
> |
vdist = ourview.vdist; |
678 |
> |
/* set pixel index */ |
679 |
> |
samplendx = pixnumber(x,y,hres,vres); |
680 |
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/* optional motion blur */ |
681 |
|
if (lastview.type && mblur > FTINY && (lmax = viewray(lorg, ldir, |
682 |
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&lastview, hpos, vpos)) >= -FTINY) { |
683 |
< |
register int i; |
681 |
< |
register double d = mblur*(.5-urand(281+samplendx)); |
683 |
> |
double d = mblur*(.5-urand(281+samplendx)); |
684 |
|
|
685 |
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thisray.rmax = (1.-d)*thisray.rmax + d*lmax; |
686 |
|
for (i = 3; i--; ) { |
689 |
|
} |
690 |
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if (normalize(thisray.rdir) == 0.0) |
691 |
|
return(0.0); |
692 |
+ |
vdist = (1.-d)*vdist + d*lastview.vdist; |
693 |
|
} |
694 |
+ |
/* optional depth-of-field */ |
695 |
+ |
if (dblur > FTINY) { |
696 |
+ |
double vc, df[2]; |
697 |
+ |
/* random point on disk */ |
698 |
+ |
SDsquare2disk(df, frandom(), frandom()); |
699 |
+ |
df[0] *= .5*dblur; |
700 |
+ |
df[1] *= .5*dblur; |
701 |
+ |
if ((ourview.type == VT_PER) | (ourview.type == VT_PAR)) { |
702 |
+ |
double adj = 1.0; |
703 |
+ |
if (ourview.type == VT_PER) |
704 |
+ |
adj /= DOT(thisray.rdir, ourview.vdir); |
705 |
+ |
df[0] /= sqrt(ourview.hn2); |
706 |
+ |
df[1] /= sqrt(ourview.vn2); |
707 |
+ |
for (i = 3; i--; ) { |
708 |
+ |
vc = ourview.vp[i] + adj*vdist*thisray.rdir[i]; |
709 |
+ |
thisray.rorg[i] += df[0]*ourview.hvec[i] + |
710 |
+ |
df[1]*ourview.vvec[i] ; |
711 |
+ |
thisray.rdir[i] = vc - thisray.rorg[i]; |
712 |
+ |
} |
713 |
+ |
} else { /* non-standard view case */ |
714 |
+ |
double dfd = PI/4.*dblur*(.5 - frandom()); |
715 |
+ |
if ((ourview.type != VT_ANG) & (ourview.type != VT_PLS)) { |
716 |
+ |
if (ourview.type != VT_CYL) |
717 |
+ |
df[0] /= sqrt(ourview.hn2); |
718 |
+ |
df[1] /= sqrt(ourview.vn2); |
719 |
+ |
} |
720 |
+ |
for (i = 3; i--; ) { |
721 |
+ |
vc = ourview.vp[i] + vdist*thisray.rdir[i]; |
722 |
+ |
thisray.rorg[i] += df[0]*ourview.hvec[i] + |
723 |
+ |
df[1]*ourview.vvec[i] + |
724 |
+ |
dfd*ourview.vdir[i] ; |
725 |
+ |
thisray.rdir[i] = vc - thisray.rorg[i]; |
726 |
+ |
} |
727 |
+ |
} |
728 |
+ |
if (normalize(thisray.rdir) == 0.0) |
729 |
+ |
return(0.0); |
730 |
+ |
} |
731 |
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|
732 |
< |
rayorigin(&thisray, NULL, PRIMARY, 1.0); |
732 |
> |
rayorigin(&thisray, PRIMARY, NULL, NULL); |
733 |
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|
734 |
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rayvalue(&thisray); /* trace ray */ |
735 |
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|
768 |
|
goto gotzip; |
769 |
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} |
770 |
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|
771 |
< |
if (x != hres || y != vres) { |
771 |
> |
if ((x != hres) | (y != vres)) { |
772 |
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sprintf(errmsg, "resolution mismatch in recover file \"%s\"", |
773 |
|
oldfile); |
774 |
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error(USER, errmsg); |
799 |
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return -1; /* pro forma return */ |
800 |
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} |
801 |
|
|
762 |
– |
|
802 |
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static int |
803 |
< |
pixnumber( /* compute pixel index (brushed) */ |
804 |
< |
register int x, |
805 |
< |
register int y, |
803 |
> |
pixnumber( /* compute pixel index (screen door) */ |
804 |
> |
int x, |
805 |
> |
int y, |
806 |
|
int xres, |
807 |
|
int yres |
808 |
|
) |
809 |
|
{ |
810 |
< |
x -= y; |
811 |
< |
while (x < 0) |
812 |
< |
x += xres; |
813 |
< |
return((((x>>2)*yres + y) << 2) + (x & 3)); |
810 |
> |
unsigned nbits = 0; |
811 |
> |
bitmask_t coord[2]; |
812 |
> |
|
813 |
> |
if (xres < yres) xres = yres; |
814 |
> |
while (xres > 0) { |
815 |
> |
xres >>= 1; |
816 |
> |
++nbits; |
817 |
> |
} |
818 |
> |
coord[0] = x; coord[1] = y; |
819 |
> |
return ((int)hilbert_c2i(2, nbits, coord)); |
820 |
|
} |