mirror of
https://github.com/reactos/reactos.git
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120 lines
4.4 KiB
C++
120 lines
4.4 KiB
C++
/*
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** License Applicability. Except to the extent portions of this file are
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** made subject to an alternative license as permitted in the SGI Free
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** Software License B, Version 1.1 (the "License"), the contents of this
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** file are subject only to the provisions of the License. You may not use
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** this file except in compliance with the License. You may obtain a copy
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** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
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** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
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**
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** http://oss.sgi.com/projects/FreeB
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**
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** Note that, as provided in the License, the Software is distributed on an
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** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
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** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
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** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
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** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
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**
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** Original Code. The Original Code is: OpenGL Sample Implementation,
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** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
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** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
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** Copyright in any portions created by third parties is as indicated
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** elsewhere herein. All Rights Reserved.
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**
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** Additional Notice Provisions: The application programming interfaces
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** established by SGI in conjunction with the Original Code are The
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** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
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** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
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** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
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** Window System(R) (Version 1.3), released October 19, 1998. This software
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** was created using the OpenGL(R) version 1.2.1 Sample Implementation
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** published by SGI, but has not been independently verified as being
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** compliant with the OpenGL(R) version 1.2.1 Specification.
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*/
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/*
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* backend.h
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*
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* $Date$ $Revision: 1.1 $
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* $Header: /cygdrive/c/RCVS/CVS/ReactOS/reactos/lib/glu32/libnurbs/internals/backend.h,v 1.1 2004/02/02 16:39:10 navaraf Exp $
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*/
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#ifndef __glubackend_h_
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#define __glubackend_h_
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#include "trimvertex.h"
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#include "gridvertex.h"
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#include "gridtrimvertex.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( const 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 tmeshvert( REAL u, REAL v );
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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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