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110 lines
3.3 KiB
C++
110 lines
3.3 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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* trimline.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/trimline.h,v 1.1 2004/02/02 16:39:13 navaraf Exp $
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*/
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#ifndef __glutrimline_h_
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#define __glutrimline_h_
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class Arc;
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class Backend;
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#include "trimvertex.h"
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#include "jarcloc.h"
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class Trimline {
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private:
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TrimVertex** pts;
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long numverts;
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long i;
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long size;
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Jarcloc jarcl;
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TrimVertex t, b;
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TrimVertex *tinterp, *binterp;
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void reset( void ) { numverts = 0; }
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inline void grow( long );
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inline void swap( void );
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inline void append( TrimVertex * );
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static long interpvert( TrimVertex *, TrimVertex *, TrimVertex *, REAL );
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public:
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Trimline();
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~Trimline();
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void init( TrimVertex * );
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void init( long, Arc_ptr, long );
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void getNextPt( void );
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void getPrevPt( void );
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void getNextPts( REAL, Backend & );
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void getPrevPts( REAL, Backend & );
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void getNextPts( Arc_ptr );
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void getPrevPts( Arc_ptr );
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inline TrimVertex * next( void );
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inline TrimVertex * prev( void );
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inline TrimVertex * first( void );
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inline TrimVertex * last( void );
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};
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inline TrimVertex *
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Trimline::next( void )
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{
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if( i < numverts) return pts[i++]; else return 0;
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}
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inline TrimVertex *
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Trimline::prev( void )
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{
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if( i >= 0 ) return pts[i--]; else return 0;
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}
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inline TrimVertex *
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Trimline::first( void )
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{
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i = 0; return pts[i];
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}
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inline TrimVertex *
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Trimline::last( void )
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{
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i = numverts; return pts[--i];
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}
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#endif /* __glutrimline_h_ */
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