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/*
* SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
* Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice including the dates of first publication and
* either this permission notice or a reference to
* http://oss.sgi.com/projects/FreeB/
* shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Except as contained in this notice, the name of Silicon Graphics, Inc.
* shall not be used in advertising or otherwise to promote the sale, use or
* other dealings in this Software without prior written authorization from
* Silicon Graphics, Inc.
*/
/*
* trimline.h
*
* $Date: 2001/03/17 00:25:41 $ $Revision: 1.1 $
* $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/internals/trimline.h,v 1.1 2001/03/17 00:25:41 brianp Exp $
*/
#ifndef __glutrimline_h_
#define __glutrimline_h_
class Arc;
class Backend;
#include "trimvertex.h"
#include "jarcloc.h"
class Trimline {
private:
TrimVertex** pts;
long numverts;
long i;
long size;
Jarcloc jarcl;
TrimVertex t, b;
TrimVertex *tinterp, *binterp;
void reset( void ) { numverts = 0; }
inline void grow( long );
inline void swap( void );
inline void append( TrimVertex * );
static long interpvert( TrimVertex *, TrimVertex *, TrimVertex *, REAL );
public:
Trimline();
~Trimline();
void init( TrimVertex * );
void init( long, Arc_ptr, long );
void getNextPt( void );
void getPrevPt( void );
void getNextPts( REAL, Backend & );
void getPrevPts( REAL, Backend & );
void getNextPts( Arc_ptr );
void getPrevPts( Arc_ptr );
inline TrimVertex * next( void );
inline TrimVertex * prev( void );
inline TrimVertex * first( void );
inline TrimVertex * last( void );
};
inline TrimVertex *
Trimline::next( void )
{
if( i < numverts) return pts[i++]; else return 0;
}
inline TrimVertex *
Trimline::prev( void )
{
if( i >= 0 ) return pts[i--]; else return 0;
}
inline TrimVertex *
Trimline::first( void )
{
i = 0; return pts[i];
}
inline TrimVertex *
Trimline::last( void )
{
i = numverts; return pts[--i];
}
#endif /* __glutrimline_h_ */
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