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Resource Library: Graphics
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graphics-16000.iso
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msdos
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raytrace
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rayshade
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src
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setup.c
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C/C++ Source or Header
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1992-05-04
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6KB
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266 lines
/*
* setup.c
*
* Copyright (C) 1989, 1991, Craig E. Kolb
* All rights reserved.
*
* This software may be freely copied, modified, and redistributed
* provided that this copyright notice is preserved on all copies.
*
* You may not distribute this software, in whole or in part, as part of
* any commercial product without the express consent of the authors.
*
* There is no warranty or other guarantee of fitness of this software
* for any purpose. It is provided solely "as is".
*
* $Id: setup.c,v 4.0.1.2 92/01/14 18:29:35 cek Exp Locker: cek $
*
* $Log: setup.c,v $
* Revision 4.0.1.2 92/01/14 18:29:35 cek
* patch3: Added initialization of cpp option.
*
* Revision 4.0.1.1 91/09/29 15:52:20 cek
* patch1: Added crop window initialization.
* patch1: Moved RSViewing call to appropriate location.
*
* Revision 4.0 91/07/17 14:47:24 kolb
* Initial version.
*
*/
#include "rayshade.h"
#include "defaults.h"
#include "surface.h"
#include "atmosphere.h"
#include "light.h"
#include "infinite.h"
#include "list.h"
#include "options.h"
#include "stats.h"
#include "viewing.h"
#include "picture.h"
#ifdef MULTIMAX
#include <parallel.h>
#define SHARED_BYTES 23 /* 2^23 bytes of shared memory */
#endif
extern GeomList *Defstack;
static void SetupWorld();
/*
* Set default parameters
*/
void
RSSetup()
{
extern SurfList *CurSurf;
extern Medium TopMedium;
extern void NoiseInit();
#ifdef MULTIMAX
unsigned int bytes;
/*
* Initialize shared memory stuff.
*/
bytes = 1 << SHARED_BYTES;
if (share_malloc_init(bytes) == -1) {
RLerror(RL_PANIC, "Cannot share_malloc %d bytes.\n",bytes);
} else
fprintf(fstats,"Malloced %d bytes of shared memory.\n",
bytes);
#endif
Camera.hfov = HFOV;
Camera.vfov = UNSET;
Camera.pos.x = EYEX;
Camera.pos.y = EYEY;
Camera.pos.z = EYEZ;
Camera.lookp.x = LOOKX;
Camera.lookp.y = LOOKY;
Camera.lookp.z = LOOKZ;
Camera.up.x = UPX;
Camera.up.y = UPY;
Camera.up.z = UPZ;
Camera.focaldist = UNSET;
Camera.aperture = 0.;
Screen.xres = Screen.yres = UNSET;
#ifdef __WATCOMC__
Options.cpp = FALSE;
#else
Options.cpp = TRUE;
#endif
Options.maxdepth = MAXDEPTH;
Options.report_freq = REPORTFREQ;
Options.jitter = TRUE;
Options.samples = UNSET;
Options.gaussian = GAUSSIAN;
Options.filterwidth = UNSET;
Options.contrast.r = UNSET;
Options.ambient.r = Options.ambient.g =
Options.ambient.b = 1.0;
Options.cutoff.r = UNSET;
Options.cache = TRUE;
Options.shadowtransp = TRUE;
Options.crop[LOW][X] = Options.crop[LOW][Y] = 0.;
Options.crop[HIGH][X] = Options.crop[HIGH][Y] = 1.;
Stats.fstats = stderr;
Options.pictfile = stdout;
#ifdef URT
Options.alpha = TRUE;
Options.exp_output = FALSE;
#endif
Options.gamma = GAMMA;
Options.eyesep = UNSET;
#ifdef LINDA
Options.workers = WORKERS;
#endif
Options.totalframes = 1;
Options.startframe = 0;
Options.starttime = 0.;
Options.framelength = 1.;
Options.shutterspeed = 0.;
TopMedium.index = DEFAULT_INDEX;
TopMedium.statten = 1.0;
NoiseInit(); /* Initialize values for Noise() */
/*
* Top of object definition stack points to the World object.
* The World object is always a list.
*/
Defstack = GeomStackPush(GeomListCreate(), (GeomList *)NULL);
Defstack->obj->name = strsave("World");
/* Initialize surface stack */
CurSurf = SurfPush((Surface *)NULL, (SurfList *)NULL);
}
/*
* cleanup()
*
* Initialize options/variables not set on command line or in input file.
* Perform sanity checks on widow dimension, maxdepth, etc.
*/
void
RSCleanup()
{
extern Light *Lights;
extern void OpenStatsFile();
extern FILE *yyin;
yyin = (FILE *)NULL; /* mark that we're done reading input */
if (Options.samples == UNSET)
Options.samples = DEFSAMPLES;
if (Options.filterwidth == UNSET) {
if (Options.gaussian)
Options.filterwidth = FILTERWIDTH;
else
/* Default box filter width of 1.0 */
Options.filterwidth = 1.0;
}
Options.endframe = Options.startframe + Options.totalframes -1;
OpenStatsFile();
ViewingSetup();
if (Options.cutoff.r == UNSET)
Options.cutoff.r = Options.cutoff.g =
Options.cutoff.b = DEFCUTOFF;
/*
* Set contrast.
*/
if (Options.contrast.r == UNSET) {
Options.contrast.r = DEFREDCONT;
Options.contrast.g = DEFGREENCONT;
Options.contrast.b = DEFBLUECONT;
}
/*
* Image gamma is inverse of display gamma.
*/
if (fabs(Options.gamma) > EPSILON)
Options.gamma = 1. / Options.gamma;
else
Options.gamma = FAR_AWAY;
if (Options.maxdepth < 0)
Options.maxdepth = 0;
LightSetup();
}
void
RSStartFrame(frame)
int frame;
{
/*
* Set the frame start time
*/
Options.framenum = frame;
Options.framestart = Options.starttime +
Options.framenum*Options.framelength;
SamplingSetTime(Options.framestart, Options.shutterspeed,
Options.framenum);
/*
* Set up viewing parameters.
* Can't animate camera yet; when possible, this will
* need to be much smarter.
* RSViewing();
*/
/*
* Initialize world
*/
WorldSetup();
}
/*
* Initialize non-time-varying goodies.
*/
void
RSInitialize(argc, argv)
int argc;
char **argv;
{
/*
* Initialize variables, etc.
*/
RSSetup();
/*
* Parse options from command line.
*/
RSOptionsSet(argc, argv);
/*
* Process input file.
*/
if (Options.verbose) {
VersionPrint();
fprintf(Stats.fstats,"Reading input file...\n");
(void)fflush(Stats.fstats);
}
RSReadInputFile();
/*
* Set variables that weren't set on command line
* or in input file.
*/
RSCleanup();
/*
* Set sampling options.
*/
SamplingSetOptions(Options.samples, Options.gaussian,
Options.filterwidth);
/*
* Camera is currently static; initialize it here.
*/
RSViewing();
}