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105 lines
2.8 KiB
105 lines
2.8 KiB
#ifndef __glubin_h_
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#define __glubin_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* unpublished proprietary information of Silicon Graphics, Inc., and *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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* bin.h - $Revision: 1.2 $
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*/
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#include "myassert.h"
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#include "arc.h"
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#include "defines.h"
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#ifdef NT
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class Bin { /* a linked list of jordan arcs */
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#else
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struct Bin { /* a linked list of jordan arcs */
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#endif
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private:
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Arc * head; /* first arc on list */
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Arc * current; /* current arc on list */
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public:
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Bin();
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~Bin();
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inline Arc * firstarc( void );
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inline Arc * nextarc( void );
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inline Arc * removearc( void );
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inline int isnonempty( void ) { return (head ? 1 : 0); }
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inline void addarc( Arc * );
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void remove_this_arc( Arc * );
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int numarcs( void );
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void adopt( void );
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void markall( void );
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void show( char * );
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void listBezier( void );
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};
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/*----------------------------------------------------------------------------
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* Bin::addarc - add an Arc * to head of linked list of Arc *s
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*----------------------------------------------------------------------------
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*/
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inline void
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Bin::addarc( Arc *jarc )
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{
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jarc->link = head;
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head = jarc;
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}
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/*----------------------------------------------------------------------------
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* Bin::removearc - remove first Arc * from bin
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*----------------------------------------------------------------------------
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*/
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inline Arc *
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Bin::removearc( void )
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{
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Arc * jarc = head;
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if( jarc ) head = jarc->link;
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return jarc;
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}
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/*----------------------------------------------------------------------------
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* BinIter::nextarc - return current arc in bin and advance pointer to next arc
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*----------------------------------------------------------------------------
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*/
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inline Arc *
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Bin::nextarc( void )
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{
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Arc * jarc = current;
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#ifdef DEBUG
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assert( jarc->check() != 0 );
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#endif
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if( jarc ) current = jarc->link;
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return jarc;
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}
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/*----------------------------------------------------------------------------
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* BinIter::firstarc - set current arc to first arc of bin advance to next arc
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*----------------------------------------------------------------------------
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*/
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inline Arc *
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Bin::firstarc( void )
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{
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current = head;
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return nextarc( );
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}
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#endif /* __glubin_h_ */
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