mirror of
https://github.com/reactos/reactos.git
synced 2024-11-04 13:52:30 +00:00
139 lines
4.9 KiB
C++
139 lines
4.9 KiB
C++
/*
|
|
** 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.
|
|
*/
|
|
|
|
/*
|
|
* arc.h
|
|
*
|
|
* $Date$ $Revision: 1.1 $
|
|
* $Header: /cygdrive/c/RCVS/CVS/ReactOS/reactos/lib/glu32/libnurbs/internals/arc.h,v 1.1 2004/02/02 16:39:10 navaraf Exp $
|
|
*/
|
|
|
|
#ifndef __gluarc_h_
|
|
#define __gluarc_h_
|
|
|
|
#include "myassert.h"
|
|
#include "bufpool.h"
|
|
#include "mystdio.h"
|
|
#include "types.h"
|
|
#include "pwlarc.h"
|
|
#include "trimvertex.h"
|
|
|
|
class Bin;
|
|
class Arc;
|
|
struct BezierArc;
|
|
|
|
typedef class Arc *Arc_ptr;
|
|
|
|
enum arc_side { arc_none = 0, arc_right, arc_top, arc_left, arc_bottom };
|
|
|
|
|
|
class Arc: public PooledObj { /* an arc, in two list, the trim list and bin */
|
|
|
|
public:
|
|
static const int bezier_tag;
|
|
static const int arc_tag;
|
|
static const int tail_tag;
|
|
Arc_ptr prev; /* trim list pointer */
|
|
Arc_ptr next; /* trim list pointer */
|
|
Arc_ptr link; /* bin pointers */
|
|
BezierArc * bezierArc; /* associated bezier arc */
|
|
PwlArc * pwlArc; /* associated pwl arc */
|
|
long type; /* curve type */
|
|
long nuid;
|
|
|
|
inline Arc( Arc *, PwlArc * );
|
|
inline Arc( arc_side, long );
|
|
|
|
Arc_ptr append( Arc_ptr );
|
|
int check( void );
|
|
int isMonotone( void );
|
|
int isDisconnected( void );
|
|
int numpts( void );
|
|
void markverts( void );
|
|
void getextrema( Arc_ptr[4] );
|
|
void print( void );
|
|
void show( void );
|
|
void makeSide( PwlArc *, arc_side );
|
|
inline int isTessellated() { return pwlArc ? 1 : 0; }
|
|
inline long isbezier() { return type & bezier_tag; }
|
|
inline void setbezier() { type |= bezier_tag; }
|
|
inline void clearbezier() { type &= ~bezier_tag; }
|
|
inline long npts() { return pwlArc->npts; }
|
|
inline TrimVertex * pts() { return pwlArc->pts; }
|
|
inline REAL * tail() { return pwlArc->pts[0].param; }
|
|
inline REAL * head() { return next->pwlArc->pts[0].param; }
|
|
inline REAL * rhead() { return pwlArc->pts[pwlArc->npts-1].param; }
|
|
inline long ismarked() { return type & arc_tag; }
|
|
inline void setmark() { type |= arc_tag; }
|
|
inline void clearmark() { type &= (~arc_tag); }
|
|
inline void clearside() { type &= ~(0x7 << 8); }
|
|
inline void setside( arc_side s ) { clearside(); type |= (((long)s)<<8); }
|
|
inline arc_side getside() { return (arc_side) ((type>>8) & 0x7); }
|
|
inline int getitail() { return type & tail_tag; }
|
|
inline void setitail() { type |= tail_tag; }
|
|
inline void clearitail() { type &= (~tail_tag); }
|
|
};
|
|
|
|
/*--------------------------------------------------------------------------
|
|
* Arc - initialize a new Arc with the same type and uid of
|
|
* a given Arc and a given pwl arc
|
|
*--------------------------------------------------------------------------
|
|
*/
|
|
|
|
inline
|
|
Arc::Arc( Arc *j, PwlArc *p )
|
|
{
|
|
bezierArc = NULL;
|
|
pwlArc = p;
|
|
type = j->type;
|
|
nuid = j->nuid;
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------
|
|
* Arc - initialize a new Arc with the same type and uid of
|
|
* a given Arc and a given pwl arc
|
|
*--------------------------------------------------------------------------
|
|
*/
|
|
|
|
inline
|
|
Arc::Arc( arc_side side, long _nuid )
|
|
{
|
|
bezierArc = NULL;
|
|
pwlArc = NULL;
|
|
type = 0;
|
|
setside( side );
|
|
nuid = _nuid;
|
|
}
|
|
|
|
#endif /* __gluarc_h_ */
|