CCollisionAABBTree.h

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//==============================================================================
/*
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    (www.chai3d.org)

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    \author    <http://www.chai3d.org>
    \author    Chris Sewell
    \author    Charity Lu
    \author    Francois Conti
    \version   3.2.0 $Rev: 1869 $
*/
//==============================================================================

//------------------------------------------------------------------------------
#ifndef CCollisionAABBTreeH
#define CCollisionAABBTreeH
//------------------------------------------------------------------------------
#include "collisions/CCollisionBasics.h"
#include "collisions/CCollisionAABBBox.h"
#include "collisions/CCollisionAABBTree.h"
//------------------------------------------------------------------------------
namespace chai3d {
//------------------------------------------------------------------------------

//==============================================================================
//==============================================================================

//------------------------------------------------------------------------------
typedef enum
{
    C_AABB_NODE_INTERNAL,
    C_AABB_NODE_LEAF,
    C_AABB_NOT_DEFINED
} cAABBNodeType;

//------------------------------------------------------------------------------

//==============================================================================
//==============================================================================
struct cCollisionAABBNode
{
    //--------------------------------------------------------------------------
    // CONSTRUCTOR & DESTRUCTOR:
    //--------------------------------------------------------------------------

public:

    cCollisionAABBNode();

    virtual ~cCollisionAABBNode() {}
    
    
    //--------------------------------------------------------------------------
    // PUBLIC METHODS:
    //--------------------------------------------------------------------------

public:

    void fitBBox(double a_radius,
        cVector3d& a_vertex0);

    void fitBBox(double a_radius,
        cVector3d& a_vertex0,
        cVector3d& a_vertex1);

    void fitBBox(double a_radius,
        cVector3d& a_vertex0,
        cVector3d& a_vertex1,
        cVector3d& a_vertex2);

    void render(int a_depth = -1);

    bool computeCollision(cGenericObject* a_owner,
        cVector3d& a_segmentPointA,
        cVector3d& a_segmentDirection,
        cCollisionAABBBox& a_lineBox,
        cCollisionRecorder& a_recorder,
        cCollisionSettings& a_settings);


    //--------------------------------------------------------------------------
    // PUBLIC MEMBERS:
    //--------------------------------------------------------------------------

public:

    cCollisionAABBBox m_bbox;

    int m_depth;

    cAABBNodeType m_nodeType;

    int m_leftSubTree;

    int m_rightSubTree;
};


//------------------------------------------------------------------------------
}   // namespace chai3d
//------------------------------------------------------------------------------

//------------------------------------------------------------------------------
#endif
//------------------------------------------------------------------------------