118 lines
3.2 KiB
C
118 lines
3.2 KiB
C
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#ifndef __gluglsurfeval_h_
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#define __gluglsurfeval_h_
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/**************************************************************************
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* *
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* Copyright (C) 1991, Silicon Graphics, Inc. *
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* *
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* These coded instructions, statements, and computer programs contain *
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* unpublished proprietary information of Silicon Graphics, Inc., and *
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* are protected by Federal copyright law. They may not be disclosed *
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* to third parties or copied or duplicated in any form, in whole or *
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* in part, without the prior written consent of Silicon Graphics, Inc. *
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* *
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**************************************************************************/
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/*
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* glsurfeval.h
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*
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* $Revision: 1.2 $
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*/
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#ifndef NT
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#pragma once
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#endif
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#include "basicsur.h"
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class SurfaceMap;
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class OpenGLSurfaceEvaluator;
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class StoredVertex;
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#define TYPECOORD 1
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#define TYPEPOINT 2
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/* Cache up to 3 vertices from tmeshes */
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#define VERTEX_CACHE_SIZE 3
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class StoredVertex {
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public:
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StoredVertex() { type = 0; }
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~StoredVertex(void) {}
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void saveEvalCoord(REAL x, REAL y)
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{coord[0] = x; coord[1] = y; type = TYPECOORD; }
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void saveEvalPoint(long x, long y)
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{point[0] = x; point[1] = y; type = TYPEPOINT; }
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void invoke(OpenGLSurfaceEvaluator *eval);
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private:
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int type;
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REAL coord[2];
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long point[2];
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};
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class OpenGLSurfaceEvaluator : public BasicSurfaceEvaluator {
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public:
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OpenGLSurfaceEvaluator();
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~OpenGLSurfaceEvaluator( void );
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void polymode( long style );
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void range2f( long, REAL *, REAL * );
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void domain2f( REAL, REAL, REAL, REAL );
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void addMap( SurfaceMap * ) { }
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void enable( long );
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void disable( long );
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void bgnmap2f( long );
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void map2f( long, REAL, REAL, long, long,
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REAL, REAL, long, long, REAL * );
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void mapgrid2f( long, REAL, REAL, long, REAL, REAL );
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void mapmesh2f( long, long, long, long, long );
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void evalcoord2f( long, REAL, REAL );
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void evalpoint2i( long, long );
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void endmap2f( void );
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void bgnline( void );
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void endline( void );
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void bgnclosedline( void );
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void endclosedline( void );
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void bgntmesh( void );
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void swaptmesh( void );
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void endtmesh( void );
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void bgnqstrip( void );
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void endqstrip( void );
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void bgntfan( void );
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void endtfan( void );
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void evalUStrip(int n_upper, REAL v_upper, REAL* upper_val,
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int n_lower, REAL v_lower, REAL* lower_val);
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void evalVStrip(int n_left, REAL u_left, REAL* left_val,
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int n_right, REAL u_right, REAL* right_val);
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void coord2f( REAL, REAL );
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void point2i( long, long );
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void newtmeshvert( REAL, REAL );
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void newtmeshvert( long, long );
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private:
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StoredVertex *vertexCache[VERTEX_CACHE_SIZE];
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int tmeshing;
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int which;
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int vcount;
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};
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inline void StoredVertex::invoke(OpenGLSurfaceEvaluator *eval)
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{
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switch(type) {
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case TYPECOORD:
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eval->coord2f(coord[0], coord[1]);
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break;
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case TYPEPOINT:
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eval->point2i(point[0], point[1]);
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break;
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default:
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break;
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}
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}
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#endif /* __gluglsurfeval_h_ */
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