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/*
** License Applicability. Except to the extent portions of this file are
** made subject to an alternative license as permitted in the SGI Free
** Software License B, Version 1.1 (the "License"), the contents of this
** file are subject only to the provisions of the License. You may not use
** this file except in compliance with the License. You may obtain a copy
** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
**
** http://oss.sgi.com/projects/FreeB
**
** Note that, as provided in the License, the Software is distributed on an
** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
**
** Original Code. The Original Code is: OpenGL Sample Implementation,
** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
** Copyright in any portions created by third parties is as indicated
** elsewhere herein. All Rights Reserved.
**
** Additional Notice Provisions: The application programming interfaces
** established by SGI in conjunction with the Original Code are The
** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
** Window System(R) (Version 1.3), released October 19, 1998. This software
** was created using the OpenGL(R) version 1.2.1 Sample Implementation
** published by SGI, but has not been independently verified as being
** compliant with the OpenGL(R) version 1.2.1 Specification.
*/
/*
* bin.h
*
* $Date: 2001-03-17 00:25:40 $ $Revision: 1.1 $
* $Header: /cvs/mesa/Mesa/src/glu/sgi/libnurbs/internals/bin.h,v 1.1 2001-03-17 00:25:40 brianp Exp $
*/
#ifndef __glubin_h_
#define __glubin_h_
#include "myassert.h"
#include "arc.h"
#include "defines.h"
class Bin
{ /* a linked list of jordan arcs */
private:
Arc_ptr head;/*first arc on list */
Arc_ptr current; /* current arc on list */
public:
Bin();
~Bin();
inline Arc_ptr firstarc( void );
inline Arc_ptr nextarc( void );
inline Arc_ptr removearc( void );
inline int isnonempty( void ) { return (head ? 1 : 0); }
inline void addarc( Arc_ptr );
void remove_this_arc( Arc_ptr );
int numarcs( void );
void adopt( void );
void markall( void );
void show( char * );
void listBezier( void );
};
/*----------------------------------------------------------------------------
* Bin::addarc - add an Arc_ptr to head of linked list of Arc_ptr
*----------------------------------------------------------------------------
*/
inline void
Bin::addarc( Arc_ptr jarc )
{
jarc->link = head;
head = jarc;
}
/*----------------------------------------------------------------------------
* Bin::removearc - remove first Arc_ptr from bin
*----------------------------------------------------------------------------
*/
inline Arc_ptr
Bin::removearc( void )
{
Arc_ptr jarc = head;
if( jarc ) head = jarc->link;
return jarc;
}
/*----------------------------------------------------------------------------
* BinIter::nextarc - return current arc in bin and advance pointer to next arc
*----------------------------------------------------------------------------
*/
inline Arc_ptr
Bin::nextarc( void )
{
Arc_ptr jarc = current;
#ifdef DEBUG
assert( jarc->check() != 0 );
#endif
if( jarc ) current = jarc->link;
return jarc;
}
/*----------------------------------------------------------------------------
* BinIter::firstarc - set current arc to first arc of bin advance to next arc
*----------------------------------------------------------------------------
*/
inline Arc_ptr
Bin::firstarc( void )
{
current = head;
return nextarc( );
}
#endif /* __glubin_h_ */
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