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

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• 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/knotvector.h

• /*
   * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
   * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
   *
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   * 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,
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   * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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   */
  
  /*
   * knotvector.h
   *
   */
  
  #ifndef __gluknotvector_h_
  #define __gluknotvector_h_
  
  #include "types.h"
  
  struct Knotvector { /* a knot vector */
  			Knotvector( void );
  			~Knotvector( void );
      void		init( long, long, long, INREAL * );
      int			validate( void );
      void 		show( const char * );
  
      long		order;		/* order of spline  */
      long		knotcount;	/* number of knots  */
      long		stride;		/* bytes between points */
      Knot *		knotlist;	/* global knot vector */
  };
  
  /* tolerance to test knot coincidence */
  #define TOLERANCE 		1.0e-5
  
  inline int 
  identical( Knot x, Knot y )
  {
      return ((x-y) < TOLERANCE) ? 1 : 0;
  }
  #endif /* __gluknotvector_h_ */