IABSD.fr/xenocara/lib/libGLU/src/libnurbs/internals/patch.h

Branch : - branch - master - tag -

• Show log

  Commit

• Author : jsg
  Date : 2013-09-01 03:51:12
  Hash : 729f7da4
  Message : Update to GLU 9.0.0, GLU was previously part of Mesa but is now seperate. tested in a ports bulk build by landry@, ok matthieu@

• lib/libGLU/src/libnurbs/internals/patch.h

• /*
   * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
   * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice including the dates of first publication and
   * either this permission notice or a reference to
   * http://oss.sgi.com/projects/FreeB/
   * shall be included in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
   * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
   * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
   * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   *
   * Except as contained in this notice, the name of Silicon Graphics, Inc.
   * shall not be used in advertising or otherwise to promote the sale, use or
   * other dealings in this Software without prior written authorization from
   * Silicon Graphics, Inc.
   */
  
  /*
   * patch.h
   *
   */
  
  #ifndef __glupatch_h_
  #define __glupatch_h_
  
  #include "types.h"
  #include "defines.h"
  
  class Quilt;
  class Mapdesc;
  
  
  struct Pspec {
      REAL		range[3];
      REAL		sidestep[2];
      REAL		stepsize;
      REAL		minstepsize;
      int			needsSubdivision;
  };
  
  struct Patchspec : public Pspec {
      int			order;
      int			stride;
      void 		clamp( REAL );
      void 		getstepsize( REAL );
      void		singleStep( void );    
  };
  
  class Patch {
  public:
  friend class Subdivider;
  friend class Quilt;
  friend class Patchlist;
      			Patch( Quilt *, REAL*, REAL *, Patch * );
      			Patch( Patch &, int, REAL, Patch * );
      void		bbox( void );
      void		clamp( void );
      void		getstepsize( void );
      int			cullCheck( void );
      int			needsSubdivision( int );
      int			needsSamplingSubdivision( void );
      int			needsNonSamplingSubdivision( void );
  
      int                 get_uorder() {return pspec[0].order;}
      int                 get_vorder() {return pspec[1].order;}
  
  private:
  
      Mapdesc*		mapdesc;
      Patch*		next;
      int			cullval;
      int			notInBbox;
      int			needsSampling;
      REAL		cpts[MAXORDER*MAXORDER*MAXCOORDS]; //culling pts 
      REAL		spts[MAXORDER*MAXORDER*MAXCOORDS]; //sampling pts 
      REAL		bpts[MAXORDER*MAXORDER*MAXCOORDS]; //bbox pts
      Patchspec		pspec[2];
      void 		checkBboxConstraint( void );
      REAL 		bb[2][MAXCOORDS];
  };
  #endif /* __glupatch_h_ */