TAPsExtendedOpenGLPNTriangleVolPresModel.hpp

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/******************************************************************************
TAPsExtendedOpenGLPNTriangleVolPresModel.hpp

Class TAPsExtendedOpenGLVolPresPolygonalModel is for a deformable mesh model with 
volume preservation.
It memorizes its original shape -- original vertex positions

SUKITTI PUNAK   (05/19/2005)
UPDATE          (05/25/2005)
******************************************************************************/
#ifndef TAPs_EXTENDED_OPENGL_PN_TRIANGLE_VOLPRES_MODEL_HPP
#define TAPs_EXTENDED_OPENGL_PN_TRIANGLE_VOLPRES_MODEL_HPP

#include "TAPsOpenGLPNTriangleVolPresModel.hpp"

BEGIN_NAMESPACE_TAPs__OpenGL
//=============================================================================
template <typename T>
class ExtendedOpenGLPNTriangleVolPresModel : public /*virtual*/ OpenGLPNTriangleVolPresModel<T> {
    //-------------------------------------------------------------------------
    // put it through ostream
    friend std::ostream & operator<< ( std::ostream &output, ExtendedOpenGLPNTriangleVolPresModel<T> const &o )
    {
        output  << "\n======================\n"
                <<   "TAPs::OpenGL::ExtendedOpenGLPNTriangleVolPresModel<"
                << typeid(T).name() << "> Class\n"
                <<   "======================\n";
        //----------------------------------------------------------------
        // Material Node from OpenGLSupport
        output  << "\nMaterial Node" << "\n{\n" << o.material << "\n}";
        //----------------------------------------------------------------
        // Nodes from XPolygonalModel<T>
        output  << "\n\nVertices " << o.m_iNoVertices << "\n{";
        for ( int i = 0; i < o.m_iNoVertices; ++i ) {
            output << "\n  #" << i << "\t" << o.m_prXVertex[i];
        }
        output  << "\n}";
        //----------------------------------------------------------------
        // Neighbor vertex ring#1
        if ( o.m_pviVertexRing1List ) {
            std::vector<int>::const_iterator iterator;
            output  << "\n\nVertexRing1 " << o.m_iNoVertices << "\n{";
            for ( int i = 0; i < o.m_iNoVertices; ++i ) {
                output << "\n  #" << i;
                for (   iterator = o.m_pviVertexRing1List[i].begin(); 
                        iterator != o.m_pviVertexRing1List[i].end();
                        ++iterator )
                {
                    output << "\t" << *iterator;
                }
            }
            output  << "\n}";
        }
        //----------------------------------------------------------------
        // Faces Node
        output  << "\n\nFaces " << o.m_iNoFaces  << "\n{";
        for ( int i = 0; i < o.m_iNoFaces; ++i ) {
            output << "\n  #" << i << "\t" << o.m_prFace[i];
        }
        output  << "\n}";
        return output;
    }
//-----------------------------------------------------------------------------
// Member Functions  -----------------------------------------------------------
public:
    //-------------------------------------------------------------------------
    // default constructor
    ExtendedOpenGLPNTriangleVolPresModel();
    //-------------------------------------------------------------------------
    // destructor
    virtual ~ExtendedOpenGLPNTriangleVolPresModel();
    //-------------------------------------------------------------------------
    virtual void Initialize ();     // virtual fn from Model class
    //-------------------------------------------------------------------------
    // A function for bouncing
    T FlatCollisionDetectionWithElasticity( T groundHeight );
    //-------------------------------------------------------------------------
    // Reset Fn inherited from Model class
    virtual void Reset ();
    //-------------------------------------------------------------------------
    // DisplayGL inherited from OpenGLSupport class
    //virtual void DisplayGL ( OpenGL::Enum::DrawMode DM = OpenGL::Enum::POLYGON );
    // Override DisplayGLText
    virtual void DisplayGLText ( T x = 0, T y = 0, T z = 0 );
    //-------------------------------------------------------------------------
    // PICKING FNs
    // Select A Triangle
    void SelectATriangle (
        GLuint BUFSIZE, GLuint selectBuf[], GLint &hits, 
        GLdouble x, GLdouble y, 
        GLdouble dLeft,     GLdouble dRight, 
        GLdouble dBottom,   GLdouble dTop, 
        GLdouble dNear,     GLdouble dFar
    );
    void ProcessHits ( GLint hits, GLuint buffer[] );
protected:
    //-------------------------------------------------------------------------
    // virtual fns from class VolPresPolygonalModel
    //virtual T CalVolume ();
    //virtual T CalVolume2 ();
    virtual void PreserveVolumeByVertexNormals( T weight[4] );
    //virtual void PreserveVolume ( T weight[4] );
    //-------------------------------------------------------------------------
    // Volume Calculation
    // calculate volume of PN-Triangles
    T CalVolumeOfPNTriangleMesh ();
    T CalCubicTriPatchVolume (
        T v[10][3]      // I/P: 10 Bezier Ctrl Pts
    );
    void CalCubicTriPatchVolume (
        T v[10][3],     // I/P: 10 Bezier Ctrl Pts
        T dv[10][3],    // I/P: 10 Normals
        T wgt[4]        // O/P: weight
    );
    //-------------------------------------------------------------------------
    // Volume Calculation
    // calculate volume of L2 linear approximation
    T CalVolumeOfL2Approximation ();
    //-------------------------------------------------------------------------
    // Helper Fn: TriBezierDegreeRaiseFrom2to3
    void TriBezierDegreeRaiseFrom2to3 ( T deg2In[6][3], T deg3Out[10][3] );
    // Helper Fn: CubicToLinearApproxByL2Tri
    void CubicToLinearApproxByL2Tri ( T deg3In[10][3], T deg1Out[3][3] );
    //-------------------------------------------------------------------------
    // Override DrawGL
    virtual void DrawGL ( GLenum );
    //-------------------------------------------------------------------------
    // Protected Fn(s)
    void SetOrigVertexPositions ();
    void SetFacesToUnFixed ();
    void SetVerticesToUnFixed ();
public:
    //-------------------------------------------------------------------------
    // For Simulation
//-----------------------------------------------------------------------------
// Data Members  ---------------------------------------------------------------
protected:
    Vector3<T> *    m_prOrigVertexPos;  // original vertex positions
    bool *  m_pbFaceFixed;      // Status: Fixed/Unfixed status for each face
    bool *  m_pbVertexFixed;    // Status: Fixed/Unfixed status for each vertex
//-----------------------------------------------------------------------------
};
//=============================================================================
END_NAMESPACE_TAPs__OpenGL
//-----------------------------------------------------------------------------
// Include definition if TAPs_USE_EXPORT is not defined
//#if !defined( TAPs_USE_EXPORT )
    #include "TAPsExtendedOpenGLPNTriangleVolPresModel.cpp"
//#endif
//-----------------------------------------------------------------------------
#endif
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