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93 lines
3.1 KiB
93 lines
3.1 KiB
#ifndef __glubackend_h_
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#define __glubackend_h_
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/**************************************************************************
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* *
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* Copyright (C) 1992, 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* unpublished proprietary information of Silicon Graphics, Inc., and *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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* backend.h - $Revision: 1.2 $
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*/
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#include "trimvert.h"
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#include "gridvert.h"
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#include "gridtrim.h"
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class BasicCurveEvaluator;
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class BasicSurfaceEvaluator;
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class Backend {
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private:
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BasicCurveEvaluator& curveEvaluator;
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BasicSurfaceEvaluator& surfaceEvaluator;
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public:
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Backend( BasicCurveEvaluator &c, BasicSurfaceEvaluator& e )
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: curveEvaluator(c), surfaceEvaluator(e) {}
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/* surface backend routines */
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void bgnsurf( int, int, long );
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void patch( REAL, REAL, REAL, REAL );
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void surfpts( long, REAL *, long, long, int, int,
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REAL, REAL, REAL, REAL );
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void surfbbox( long, REAL *, REAL * );
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void surfgrid( REAL, REAL, long, REAL, REAL, long );
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void surfmesh( long, long, long, long );
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void bgntmesh( char * );
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void endtmesh( void );
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void swaptmesh( void );
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void tmeshvert( GridTrimVertex * );
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void tmeshvert( TrimVertex * );
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void tmeshvert( GridVertex * );
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void linevert( TrimVertex * );
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void linevert( GridVertex * );
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void bgnoutline( void );
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void endoutline( void );
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void endsurf( void );
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void triangle( TrimVertex*, TrimVertex*, TrimVertex* );
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void bgntfan();
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void endtfan();
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void bgnqstrip();
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void endqstrip();
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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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);
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void evalVStrip(int n_left, REAL u_left, REAL* left_val,
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int n_right, REAL v_right, REAL* right_val
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);
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void tmeshvertNOGE(TrimVertex *t);
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void tmeshvertNOGE_BU(TrimVertex *t);
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void tmeshvertNOGE_BV(TrimVertex *t);
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void preEvaluateBU(REAL u);
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void preEvaluateBV(REAL v);
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/* curve backend routines */
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void bgncurv( void );
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void segment( REAL, REAL );
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void curvpts( long, REAL *, long, int, REAL, REAL );
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void curvgrid( REAL, REAL, long );
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void curvmesh( long, long );
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void curvpt( REAL );
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void bgnline( void );
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void endline( void );
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void endcurv( void );
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private:
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#ifndef NOWIREFRAME
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int wireframetris;
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int wireframequads;
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int npts;
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REAL mesh[3][4];
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int meshindex;
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#endif
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};
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#endif /* __glubackend_h_ */
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