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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.
*/
/*
* quilt.h
*
* $Date: 2001/03/17 00:25:41 $ $Revision: 1.1 $
* $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/internals/quilt.h,v 1.1 2001/03/17 00:25:41 brianp Exp $
*/
#ifndef __gluquilt_h_
#define __gluquilt_h_
#include "defines.h"
#include "bufpool.h"
#include "types.h"
class Backend;
class Mapdesc;
class Flist;
class Knotvector;
/* constants for memory allocation of NURBS to Bezier conversion */
#define MAXDIM 2
struct Quiltspec { /* a specification for a dimension of a quilt */
int stride; /* words between points */
int width; /* number of segments */
int offset; /* words to first point */
int order; /* order */
int index; /* current segment number */
int bdry[2]; /* boundary edge flag */
REAL step_size;
Knot * breakpoints;
};
typedef Quiltspec *Quiltspec_ptr;
class Quilt : public PooledObj { /* an array of bezier patches */
public:
Quilt( Mapdesc * );
Mapdesc * mapdesc; /* map descriptor */
REAL * cpts; /* control points */
Quiltspec qspec[MAXDIM]; /* the dimensional data */
Quiltspec_ptr eqspec; /* qspec trailer */
Quilt *next; /* next quilt in linked list */
public:
void deleteMe( Pool& );
void toBezier( Knotvector &, INREAL *, long );
void toBezier( Knotvector &, Knotvector &, INREAL *, long );
void select( REAL *, REAL * );
int getDimension( void ) { return eqspec - qspec; }
void download( Backend & );
void downloadAll( REAL *, REAL *, Backend & );
int isCulled( void );
void getRange( REAL *, REAL *, Flist&, Flist & );
void getRange( REAL *, REAL *, int, Flist & );
void getRange( REAL *, REAL *, Flist& );
void findRates( Flist& slist, Flist& tlist, REAL[2] );
void findSampleRates( Flist& slist, Flist& tlist );
void show();
};
typedef class Quilt *Quilt_ptr;
#endif /* __gluquilt_h_ */
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