mirror of
https://github.com/reactos/reactos.git
synced 2025-01-12 09:07:54 +00:00
206 lines
7 KiB
C++
206 lines
7 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.
|
|
*/
|
|
|
|
/*
|
|
* subdivider.h
|
|
*
|
|
* $Date$ $Revision: 1.1 $
|
|
* $Header: /cygdrive/c/RCVS/CVS/ReactOS/reactos/lib/glu32/libnurbs/internals/subdivider.h,v 1.1 2004/02/02 16:39:12 navaraf Exp $
|
|
*/
|
|
|
|
#ifndef __glusubdivider_h_
|
|
#define __glusubdivider_h_
|
|
|
|
#include "mysetjmp.h"
|
|
#include "bin.h"
|
|
#include "flist.h"
|
|
#include "slicer.h"
|
|
#include "arctess.h"
|
|
#include "trimvertex.h"
|
|
#include "trimvertpool.h"
|
|
|
|
class Arc;
|
|
class Pool;
|
|
class Renderhints;
|
|
class Quilt;
|
|
class Patchlist;
|
|
class Curvelist;
|
|
struct JumpBuffer;
|
|
|
|
class Subdivider {
|
|
public:
|
|
Subdivider( Renderhints&, Backend& );
|
|
~Subdivider( void );
|
|
void clear( void );
|
|
|
|
void beginTrims( void ) {}
|
|
void beginLoop( void );
|
|
void addArc( REAL *, Quilt *, long );
|
|
void addArc( int, TrimVertex *, long );
|
|
void endLoop( void ) {}
|
|
void endTrims( void ) {}
|
|
|
|
void beginQuilts( void );
|
|
void addQuilt( Quilt * );
|
|
void endQuilts( void ) {}
|
|
|
|
void drawCurves( void );
|
|
void drawSurfaces( long );
|
|
|
|
int ccwTurn_sl( Arc_ptr, Arc_ptr );
|
|
int ccwTurn_sr( Arc_ptr , Arc_ptr );
|
|
int ccwTurn_tl( Arc_ptr , Arc_ptr );
|
|
int ccwTurn_tr( Arc_ptr , Arc_ptr );
|
|
|
|
void setJumpbuffer( JumpBuffer * );
|
|
|
|
void set_domain_distance_u_rate(REAL u_rate)
|
|
{
|
|
domain_distance_u_rate = u_rate;
|
|
}
|
|
void set_domain_distance_v_rate(REAL v_rate)
|
|
{
|
|
domain_distance_v_rate = v_rate;
|
|
}
|
|
void set_is_domain_distance_sampling(int flag)
|
|
{
|
|
is_domain_distance_sampling = flag;
|
|
}
|
|
|
|
private:
|
|
void classify_headonleft_s( Bin &, Bin &, Bin &, REAL );
|
|
void classify_tailonleft_s( Bin &, Bin &, Bin &, REAL );
|
|
void classify_headonright_s( Bin &, Bin &, Bin &, REAL );
|
|
void classify_tailonright_s( Bin &, Bin &, Bin &, REAL );
|
|
void classify_headonleft_t( Bin &, Bin &, Bin &, REAL );
|
|
void classify_tailonleft_t( Bin &, Bin &, Bin &, REAL );
|
|
void classify_headonright_t( Bin &, Bin &, Bin &, REAL );
|
|
void classify_tailonright_t( Bin &, Bin &, Bin &, REAL );
|
|
|
|
enum dir { down, same, up, none };
|
|
void tessellate( Arc_ptr, REAL );
|
|
void monotonize( Arc_ptr , Bin & );
|
|
int isMonotone( Arc_ptr );
|
|
int decompose( Bin &, REAL );
|
|
|
|
|
|
Slicer slicer;
|
|
ArcTessellator arctessellator;
|
|
Pool arcpool;
|
|
Pool bezierarcpool;
|
|
Pool pwlarcpool;
|
|
TrimVertexPool trimvertexpool;
|
|
|
|
JumpBuffer* jumpbuffer;
|
|
Renderhints& renderhints;
|
|
Backend& backend;
|
|
|
|
Bin initialbin;
|
|
Arc_ptr pjarc;
|
|
int s_index;
|
|
int t_index;
|
|
Quilt * qlist;
|
|
Flist spbrkpts;
|
|
Flist tpbrkpts;
|
|
Flist smbrkpts;
|
|
Flist tmbrkpts;
|
|
REAL stepsizes[4];
|
|
int showDegenerate;
|
|
int isArcTypeBezier;
|
|
|
|
void samplingSplit( Curvelist&, int );
|
|
|
|
void subdivideInS( Bin& );
|
|
void splitInS( Bin&, int, int );
|
|
void splitInT( Bin&, int, int );
|
|
void samplingSplit( Bin&, Patchlist&, int, int );
|
|
void nonSamplingSplit( Bin&, Patchlist&, int, int );
|
|
void tessellation( Bin&, Patchlist& );
|
|
void monosplitInS( Bin&, int, int );
|
|
void monosplitInT( Bin&, int, int );
|
|
|
|
void outline( Bin & );
|
|
void freejarcs( Bin & );
|
|
void render( Bin & );
|
|
void split( Bin &, Bin &, Bin &, int, REAL );
|
|
void tessellate( Bin &, REAL, REAL, REAL, REAL );
|
|
|
|
inline void setDegenerate( void ) { showDegenerate = 1; }
|
|
inline void setNonDegenerate( void ) { showDegenerate = 0; }
|
|
inline int showingDegenerate( void ) { return showDegenerate; }
|
|
inline void setArcTypeBezier( void ) { isArcTypeBezier = 1; }
|
|
inline void setArcTypePwl( void ) { isArcTypeBezier = 0; }
|
|
inline int isBezierArcType( void ) { return isArcTypeBezier; }
|
|
|
|
void makeBorderTrim( const REAL *, const REAL * );
|
|
void split( Bin &, int, const REAL *, int, int );
|
|
void partition( Bin &, Bin &, Bin &, Bin &, Bin &, int, REAL );
|
|
void findIrregularS( Bin & );
|
|
void findIrregularT( Bin & );
|
|
|
|
|
|
inline int bbox( TrimVertex *, TrimVertex *, TrimVertex *, int );
|
|
static int bbox( REAL, REAL, REAL, REAL, REAL, REAL );
|
|
static int ccw( TrimVertex *, TrimVertex *, TrimVertex * );
|
|
void join_s( Bin &, Bin &, Arc_ptr, Arc_ptr );
|
|
void join_t( Bin &, Bin &, Arc_ptr , Arc_ptr );
|
|
int arc_split( Arc_ptr , int, REAL, int );
|
|
void check_s( Arc_ptr , Arc_ptr );
|
|
void check_t( Arc_ptr , Arc_ptr );
|
|
inline void link( Arc_ptr , Arc_ptr , Arc_ptr , Arc_ptr );
|
|
inline void simple_link( Arc_ptr , Arc_ptr );
|
|
|
|
Bin* makePatchBoundary( const REAL *from, const REAL *to );
|
|
|
|
/*in domain distance method, the tessellation is controled by two numbers:
|
|
*GLU_U_STEP: number of u-segments per unit u length of domain
|
|
*GLU_V_STEP: number of v-segments per unit v length of domain
|
|
*These two numbers are normally stored in mapdesc->maxs(t)rate.
|
|
*I (ZL) put these two numbers here so that I can optimize the untrimmed
|
|
*case in the case of domain distance sampling.
|
|
*These two numbers are set by set_domain_distance_u_rate() and ..._v_..().
|
|
*/
|
|
REAL domain_distance_u_rate;
|
|
REAL domain_distance_v_rate;
|
|
int is_domain_distance_sampling;
|
|
};
|
|
|
|
inline void
|
|
Subdivider::beginLoop( void )
|
|
{
|
|
pjarc = 0;
|
|
}
|
|
|
|
|
|
#endif /* __glusubdivider_h_ */
|