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83 lines
2.1 KiB
83 lines
2.1 KiB
#ifndef __glutrimline_h_
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#define __glutrimline_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* unpublished proprietary information of Silicon Graphics, Inc., and *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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* trimline.h - $Revision: 1.1 $
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*/
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class Arc;
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class Backend;
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#include "trimvert.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 *, 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 * );
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void getPrevPts( Arc * );
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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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