IABSD.fr/xenocara/lib/libGLU/src/libnurbs/internals/trimvertex.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/trimvertex.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.
   *
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   * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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   */
  
  /*
   * trimvertex.h
   *
   */
  
  #ifndef __glutrimvertex_h_
  #define __glutrimvertex_h_
  
  #include "types.h"
  
  /*#define USE_OPTTT*/
  
  class TrimVertex { /* a vertex on a trim curve */
  public:
      REAL		param[2];	/* parametric space coords */
  #ifdef USE_OPTTT
      REAL                cache_point[4]; //only when USE_OPTTT is on in slicer.c++
      REAL                cache_normal[3];
  #endif
      long		nuid;
  };
  
  typedef class TrimVertex *TrimVertex_p;
  
  inline REAL  
  det3( TrimVertex *a, TrimVertex *b, TrimVertex *c ) 
  {         
      return a->param[0] * (b->param[1]-c->param[1]) + 
  	   b->param[0] * (c->param[1]-a->param[1]) + 
  	   c->param[0] * (a->param[1]-b->param[1]);
  }
  
  #endif /* __glutrimvertex_h_ */