trimvertex.h

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/*
 * 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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 * shall be included in all copies or substantial portions of the Software.
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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_ */