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117 lines
3.8 KiB
117 lines
3.8 KiB
#ifndef __gluarc_h_
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#define __gluarc_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* unpublished proprietary information of Silicon Graphics, Inc., and *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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* arc.h - $Revision: 1.1 $
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*/
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#include "myassert.h"
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#include "bufpool.h"
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#include "mystdio.h"
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#include "types.h"
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#include "pwlarc.h"
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#include "trimvert.h"
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class Bin;
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class Arc;
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class BezierArc;
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typedef Arc *Arc_ptr;
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enum arc_side { arc_none = 0, arc_right, arc_top, arc_left, arc_bottom };
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#ifdef NT
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class Arc : public PooledObj { /* an arc, in two list, the trim list and bin */
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public:
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#else
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struct Arc : public PooledObj { /* an arc, in two list, the trim list and bin */
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#endif
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static const int bezier_tag;
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static const int arc_tag;
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static const int tail_tag;
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Arc_ptr prev; /* trim list pointer */
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Arc_ptr next; /* trim list pointer */
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Arc_ptr link; /* bin pointers */
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BezierArc * bezierArc; /* associated bezier arc */
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PwlArc * pwlArc; /* associated pwl arc */
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long type; /* curve type */
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long nuid;
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inline Arc( Arc *, PwlArc * );
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inline Arc( arc_side, long );
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Arc_ptr append( Arc_ptr );
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int check( void );
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int isMonotone( void );
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int isDisconnected( void );
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int numpts( void );
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void markverts( void );
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void getextrema( Arc_ptr[4] );
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void print( void );
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void show( void );
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void makeSide( PwlArc *, arc_side );
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inline int isTessellated() { return pwlArc ? 1 : 0; }
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inline long isbezier() { return type & bezier_tag; }
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inline void setbezier() { type |= bezier_tag; }
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inline void clearbezier() { type &= ~bezier_tag; }
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inline long npts() { return pwlArc->npts; }
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inline TrimVertex * pts() { return pwlArc->pts; }
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inline REAL * tail() { return pwlArc->pts[0].param; }
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inline REAL * head() { return next->pwlArc->pts[0].param; }
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inline REAL * rhead() { return pwlArc->pts[pwlArc->npts-1].param; }
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inline long ismarked() { return type & arc_tag; }
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inline void setmark() { type |= arc_tag; }
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inline void clearmark() { type &= (~arc_tag); }
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inline void clearside() { type &= ~(0x7 << 8); }
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inline void setside( arc_side s ) { clearside(); type |= (((long)s)<<8); }
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inline arc_side getside() { return (arc_side) ((type>>8) & 0x7); }
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inline int getitail() { return type & tail_tag; }
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inline void setitail() { type |= tail_tag; }
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inline void clearitail() { type &= (~tail_tag); }
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};
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/*--------------------------------------------------------------------------
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* Arc - initialize a new Arc with the same type and uid of
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* a given Arc and a given pwl arc
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*--------------------------------------------------------------------------
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*/
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inline
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Arc::Arc( Arc *j, PwlArc *p )
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{
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bezierArc = NULL;
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pwlArc = p;
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type = j->type;
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nuid = j->nuid;
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}
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/*--------------------------------------------------------------------------
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* Arc - initialize a new Arc with the same type and uid of
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* a given Arc and a given pwl arc
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*--------------------------------------------------------------------------
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*/
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inline
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Arc::Arc( arc_side side, long _nuid )
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{
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bezierArc = NULL;
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pwlArc = NULL;
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type = 0;
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setside( side );
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nuid = _nuid;
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}
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#endif /* __gluarc_h_ */
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