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gwlarson |
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/* Copyright (c) 1998 Silicon Graphics, Inc. */
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/* SCCSid "$SunId$ SGI" */
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/*
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* Header file for Radiance - OpenGL routines.
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*/
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#include "standard.h"
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#include "color.h"
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#include "object.h"
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#include "otypes.h"
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#include "lookup.h"
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#include <GL/glu.h>
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#define MAXLIGHTS 8 /* number of OGL light sources */
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#define MAXSPECEXP 128. /* maximum allowed specular exponent */
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#define UNKSPECEXP 25. /* value to use when exponent unknown */
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typedef struct {
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short type; /* material type (from otypes.h) */
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short nlinks; /* number of links to this material */
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union {
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struct {
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COLOR ambdiff; /* ambient and diffuse color */
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COLOR specular; /* specular color */
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GLfloat specexp; /* specular exponent */
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} m; /* regular material */
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struct {
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COLOR emission; /* emitting component */
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GLfloat spotdir[3]; /* spot direction */
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GLfloat spotang; /* spot cutoff angle */
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} l; /* light source */
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} u; /* union of types */
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} MATREC; /* OGL material properties */
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extern double expval; /* global exposure value */
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extern COLOR ambval; /* global ambient value */
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extern int dolights; /* are we outputting light sources? */
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extern int domats; /* are we doing materials? */
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extern LUTAB mtab; /* material/modifier lookup table */
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extern MATREC *newmaterial(), *getmatp();
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extern int newglist();
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extern double checkoct();
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#define issrcmat(m) ((m) != NULL && islight((m)->type) && \
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(m)->type != MAT_GLOW)
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