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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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/* |
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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 glightid[MAXLIGHTS]; /* OpenGL GL_LIGHTi values */ |
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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) |
