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IgBSPTriangle.h

Go to the documentation of this file.

#ifndef IG_OPEN_INVENTOR_IG_BSP_TRIANGLE_H
# define IG_OPEN_INVENTOR_IG_BSP_TRIANGLE_H

//<<<<<< INCLUDES                                                       >>>>>>

# include "Iguana/Inventor/interface/config.h"
# include <Inventor/SbLinear.h>
# include <list>

//<<<<<< PUBLIC DEFINES                                                 >>>>>>
//<<<<<< PUBLIC CONSTANTS                                               >>>>>>
//<<<<<< PUBLIC TYPES                                                   >>>>>>
//<<<<<< PUBLIC VARIABLES                                               >>>>>>
//<<<<<< PUBLIC FUNCTIONS                                               >>>>>>
//<<<<<< CLASS DECLARATIONS                                             >>>>>>

class IG_OPEN_INVENTOR_API IgBSPTriangle
{
public:
    struct LessArea
    {
        bool operator ()(IgBSPTriangle *a, IgBSPTriangle *b);   
    };

    struct MoreArea
    {
        bool operator ()(IgBSPTriangle *a, IgBSPTriangle *b);   
    };
    
    
    enum 
    { 
        POINT_A = 1,
        POINT_B = 2,
        POINT_C = 4,
        ALL_POINTS = 7
    };    
    
    typedef std::list<IgBSPTriangle *> List;
    IgBSPTriangle (const SbVec3f &a, const SbVec3f &b, const SbVec3f &c);
    IgBSPTriangle (const IgBSPTriangle &t);

    int evaluateCoplanarMask (const SbPlane &plane);    
    int evaluateInHalfPlaneMask (const SbPlane &plane);
    float area (void);
    
    static bool areCoplanar (int coplanarMask);
    static bool isInFront (int coplanarMask, int inHalfPlaneMask);
    static bool isInBack (int coplanarMask, int inHalfPlaneMask);
    static bool areIntersecting (int coplanarMask, int inHalfPlaneMask);
    static void largestOnTop (List &triangleList);
    
    const SbVec3f       &v (int n) const;
    bool                good (void) const;    
    SbVec3f             barycenter (void) const;    
    void                split (const SbPlane &plane, 
                               IgBSPTriangle::List &result,
                               int coplanarMask,
                               int inFrontMask);    

    void                ref (void);
    void                unref (void);    
    static void         unrefAndDeleteTriangles(IgBSPTriangle::List &triangles);
    static void         unrefAndDeleteTriangle(IgBSPTriangle *triangle);
protected:
    ~IgBSPTriangle (void);    
private:
    SbVec3f     m_vertex[3];    
    unsigned int        m_refCounter;    
};

std::ostream &
operator<< (std::ostream &stream, const IgBSPTriangle &triangle);

//<<<<<< INLINE PUBLIC FUNCTIONS                                        >>>>>>
//<<<<<< INLINE MEMBER FUNCTIONS                                        >>>>>>

#endif // IG_OPEN_INVENTOR_IG_BSP_TRIANGLE_H

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