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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.
*/
/*
* slicer.h
*
*/
#ifndef __gluslicer_h_
#define __gluslicer_h_
#include "trimregion.h"
#include "mesher.h"
#include "coveandtiler.h"
#include "primitiveStream.h"
#include "rectBlock.h"
class Backend;
class Arc;
class TrimVertex;
class Slicer : public CoveAndTiler, public Mesher {
public:
Slicer( Backend & );
~Slicer( void );
void slice( Arc_ptr );
void slice_old( Arc_ptr);
void slice_new( Arc_ptr );
void evalStream(primStream* );
void evalRBArray(rectBlockArray* rbArray, gridWrap* grid);
void outline( Arc_ptr );
void setstriptessellation( REAL, REAL );
void setisolines( int );
void set_ulinear(int ulinear_flag)
{
ulinear = ulinear_flag;
}
void set_vlinear(int vlinear_flag)
{
vlinear = vlinear_flag;
}
private:
Backend& backend;
REAL oneOverDu;
REAL du, dv;
int isolines;
void outline( void );
void initGridlines( void );
void advanceGridlines( long );
int ulinear; //indicate whether uorder is 2 or not
int vlinear; //indicate whether vorder is 2 or not
};
#endif /* __gluslicer_h_ */
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