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/* Copyright (c) 1992 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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/* |
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* rview.c - routines and variables for interactive view generation. |
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* |
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* 3/24/87 |
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* External symbols declared in rpaint.h |
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*/ |
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#include "ray.h" |
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#include "copyright.h" |
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#include "rpaint.h" |
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#include <signal.h> |
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#include <ctype.h> |
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|
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VIEW ourview = STDVIEW; /* viewing parameters */ |
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int hresolu, vresolu; /* image resolution */ |
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#include "ray.h" |
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#include "rpaint.h" |
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|
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CUBE thescene; /* our scene */ |
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OBJECT nsceneobjs; /* number of objects in our scene */ |
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|
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int dimlist[MAXDIM]; /* sampling dimensions */ |
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int ndims = 0; /* number of sampling dimensions */ |
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int samplendx = 0; /* index for this sample */ |
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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; /* viewing parameters */ |
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int hresolu, vresolu; /* image resolution */ |
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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 psample = 8; /* pixel sample size */ |
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double maxdiff = .15; /* max. sample difference */ |
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double maxdiff = .15; /* max. sample difference */ |
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|
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double exposure = 1.0; /* exposure for scene */ |
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double exposure = 1.0; /* exposure for scene */ |
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double dstrsrc = 0.0; /* square source distribution */ |
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double shadthresh = .1; /* shadow threshold */ |
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double shadcert = .25; /* shadow certainty */ |
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double dstrsrc = 0.0; /* square source distribution */ |
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double shadthresh = .1; /* shadow threshold */ |
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double shadcert = .25; /* shadow certainty */ |
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int directrelay = 0; /* number of source relays */ |
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int vspretest = 128; /* virtual source pretest density */ |
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int directinvis = 0; /* sources invisible? */ |
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double srcsizerat = 0.; /* maximum ratio source size/dist. */ |
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int directvis = 1; /* sources visible? */ |
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double srcsizerat = 0.; /* maximum ratio source size/dist. */ |
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double specthresh = .3; /* specular sampling threshold */ |
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double specjitter = 1.; /* specular sampling jitter */ |
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COLOR cextinction = BLKCOLOR; /* global extinction coefficient */ |
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COLOR salbedo = BLKCOLOR; /* global scattering albedo */ |
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double seccg = 0.; /* global scattering eccentricity */ |
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double ssampdist = 0.; /* scatter sampling distance */ |
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|
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double specthresh = .3; /* specular sampling threshold */ |
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double specjitter = 1.; /* specular sampling jitter */ |
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|
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int backvis = 1; /* back face visibility */ |
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|
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int maxdepth = 4; /* maximum recursion depth */ |
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double minweight = 1e-2; /* minimum ray weight */ |
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double minweight = 1e-2; /* 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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double ambacc = 0.2; /* ambient accuracy */ |
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int ambvwt = 0; /* initial weight for ambient value */ |
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double ambacc = 0.2; /* ambient accuracy */ |
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int ambres = 8; /* ambient resolution */ |
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int ambdiv = 32; /* ambient divisions */ |
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int ambssamp = 0; /* ambient super-samples */ |
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int ambincl = -1; /* include == 1, exclude == 0 */ |
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int greyscale = 0; /* map colors to brightness? */ |
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char *devname = dev_default; /* output device name */ |
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char *dvcname = dev_default; /* output device name */ |
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struct driver *dev = NULL; /* driver functions */ |
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char rifname[128]; /* rad input file name */ |
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|
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VIEW oldview; /* previous view parameters */ |
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PNODE ptrunk; /* the base of our image */ |
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#define RESERVE_AMT 32768 /* amount of memory to reserve */ |
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#define CTRL(c) ((c)-'@') |
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#define CTRL(c) ((c)-'@') |
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void |
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quit(code) /* quit program */ |
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int code; |
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{ |
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#ifdef MSTATS |
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if (code == 2 && errno == ENOMEM) |
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printmemstats(stderr); |
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#endif |
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devclose(); |
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exit(code); |
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} |
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void |
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devopen(dname) /* open device driver */ |
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char *dname; |
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{ |
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} |
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void |
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devclose() /* close our device */ |
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{ |
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if (dev != NULL) |
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} |
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void |
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printdevices() /* print list of output devices */ |
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{ |
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register int i; |
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} |
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void |
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rview() /* do a view */ |
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{ |
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char buf[32]; |
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devopen(devname); /* open device */ |
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devopen(dvcname); /* open device */ |
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newimage(); /* start image (calls fillreserves) */ |
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for ( ; ; ) { /* quit in command() */ |
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} |
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void |
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fillreserves() /* fill memory reserves */ |
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{ |
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if (reserve_mem != NULL) |
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return; |
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reserve_mem = malloc(RESERVE_AMT); |
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reserve_mem = (char *)malloc(RESERVE_AMT); |
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} |
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void |
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freereserves() /* free memory reserves */ |
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{ |
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if (reserve_mem == NULL) |
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} |
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void |
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command(prompt) /* get/execute command */ |
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char *prompt; |
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#define badcom(s) strncmp(s, inpbuf, args-inpbuf-1) |
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#define badcom(s) strncmp(s, inpbuf, args-inpbuf-1) |
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char inpbuf[256]; |
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char *args; |
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again: |
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else *++args = '\0'; |
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switch (inpbuf[0]) { |
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case 'f': /* new frame */ |
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if (badcom("frame")) |
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goto commerr; |
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case 'f': /* new frame (or free mem.) */ |
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if (badcom("frame")) { |
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if (badcom("free")) |
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goto commerr; |
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free_objmem(); |
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break; |
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} |
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getframe(args); |
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break; |
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case 'v': /* view */ |
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goto commerr; |
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lastview(args); |
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break; |
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case 'V': /* save view */ |
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if (badcom("V")) |
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goto commerr; |
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saveview(args); |
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break; |
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case 'L': /* load view */ |
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if (badcom("L")) |
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goto commerr; |
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loadview(args); |
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break; |
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case 'e': /* exposure */ |
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if (badcom("exposure")) |
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goto commerr; |
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getexposure(args); |
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break; |
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case 's': /* set a parameter */ |
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if (badcom("set")) |
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if (badcom("set")) { |
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#ifdef SIGTSTP |
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if (!badcom("stop")) |
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goto dostop; |
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#endif |
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goto commerr; |
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} |
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setparam(args); |
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break; |
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case 'n': /* new picture */ |
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goto commerr; |
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getaim(args); |
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break; |
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case 'm': /* move camera */ |
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case 'm': /* move camera (or memstats) */ |
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if (badcom("move")) |
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#ifdef MSTATS |
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#ifdef MSTATS |
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{ |
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if (badcom("memory")) |
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goto commerr; |
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break; |
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case 'r': /* rotate/repaint */ |
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if (badcom("rotate")) { |
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if (badcom("repaint")) |
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goto commerr; |
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if (badcom("repaint")) { |
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if (badcom("redraw")) |
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goto commerr; |
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redraw(); |
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break; |
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} |
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getrepaint(args); |
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break; |
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} |
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getrotate(args); |
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break; |
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case 'p': /* pivot view */ |
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if (badcom("pivot")) |
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goto commerr; |
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if (badcom("pivot")) { |
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if (badcom("pause")) |
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goto commerr; |
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goto again; |
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} |
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getpivot(args); |
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break; |
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case CTRL('R'): /* redraw */ |
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quit(0); |
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case CTRL('C'): /* interrupt */ |
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goto again; |
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#ifdef SIGTSTP |
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case CTRL('Z'): /* stop */ |
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#ifdef SIGTSTP |
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case CTRL('Z'):; /* stop */ |
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dostop: |
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devclose(); |
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kill(0, SIGTSTP); |
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/* pc stops here */ |
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devopen(devname); |
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devopen(dvcname); |
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redraw(); |
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break; |
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#endif |
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error(COMMAND, errmsg); |
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break; |
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} |
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#undef badcom |
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#undef badcom |
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} |
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void |
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rsample() /* sample the image */ |
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{ |
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int xsiz, ysiz, y; |
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RECT r; |
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PNODE *p; |
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register RECT *rl; |
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register PNODE **pl; |
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register PNODE **pl; |
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register int x; |
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/* |
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* We initialize the bottom row in the image at our current |
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* resolution. During sampling, we check super-pixels to the |
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* resolution. During sampling, we check super-pixels to the |
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* right and above by calling bigdiff(). If there is a significant |
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* difference, we subsample the super-pixels. The testing process |
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* includes initialization of the next row. |
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*/ |
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xsiz = (((pframe.r-pframe.l)<<pdepth)+hresolu-1) / hresolu; |
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ysiz = (((pframe.u-pframe.d)<<pdepth)+vresolu-1) / vresolu; |
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xsiz = (((long)(pframe.r-pframe.l)<<pdepth)+hresolu-1) / hresolu; |
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ysiz = (((long)(pframe.u-pframe.d)<<pdepth)+vresolu-1) / vresolu; |
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rl = (RECT *)malloc(xsiz*sizeof(RECT)); |
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if (rl == NULL) |
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return; |
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pl = (PNODE **)malloc(xsiz*sizeof(PNODE *)); |
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if (pl == NULL) { |
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free((char *)rl); |
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free((void *)rl); |
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return; |
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} |
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/* |
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} |
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} |
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escape: |
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free((char *)rl); |
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free((char *)pl); |
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free((void *)rl); |
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free((void *)pl); |
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} |
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int |
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refine(p, xmin, ymin, xmax, ymax, pd) /* refine a node */ |
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register PNODE *p; |
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register PNODE *p; |
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int xmin, ymin, xmax, ymax; |
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int pd; |
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{ |