LOD_MeshPrimitives.h

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/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#ifndef NAN_INCLUDED_MeshPrimitives_h
#define NAN_INCLUDED_MeshPrimitives_h

#include "MT_Vector3.h"
#include "CTR_TaggedIndex.h"
#include "CTR_UHeap.h"
#include <vector>

typedef CTR_TaggedIndex<24,0x00ffffff> LOD_VertexInd;
typedef CTR_TaggedIndex<24,0x00ffffff> LOD_EdgeInd;
typedef CTR_TaggedIndex<24,0x00ffffff> LOD_FaceInd;
typedef CTR_TaggedIndex<24,0x00ffffff> LOD_HeapInd;

class LOD_Vertex {
public :
    MT_Vector3 pos;
    std::vector<LOD_EdgeInd> m_edges;
    bool m_select_tag;

    LOD_Vertex(
    ) ;

        bool
    RemoveEdge(
        LOD_EdgeInd e
    );  

        void
    AddEdge(
        LOD_EdgeInd e
    );

        void
    SwapEdge(
        LOD_EdgeInd e_old,
        LOD_EdgeInd e_new
    );

        bool
    SelectTag(
    ) const; 

        void
    SetSelectTag(
        bool tag    
    );

        bool
    Degenerate(
    );

        void
    CopyPosition(
        float *float_ptr
    );

private :


};

class LOD_Edge : public CTR_UHeapable  {
public :
    LOD_VertexInd   m_verts[2];
    LOD_FaceInd     m_faces[2];

    LOD_Edge (
    );
            
    bool operator == (
        LOD_Edge & rhs
    );

    // Elementary helper methods

        LOD_FaceInd
    OpFace(
        LOD_FaceInd f
    ) const ;

        void
    SwapFace(
        LOD_FaceInd old_f,
        LOD_FaceInd new_f
    ) ;


    // return the half edge face - the half edge is defined
    // by the {vertex,edge} tuple. 

        LOD_FaceInd
    HalfEdgeFace(
        LOD_VertexInd vi
    );  
    

        LOD_VertexInd
    OpVertex(
        LOD_VertexInd vi
    );

    // replace the vertex v_old with vertex v_new
    // error if v_old is not one of the original vertices

        void
    SwapVertex(
        LOD_VertexInd v_old,
        LOD_VertexInd v_new
    ) ;         

        bool
    SelectTag(
    ) const ;

        void
    SetSelectTag(
        bool tag
    );
    
        int
    OpenTag(
    ) const;

        void
    SetOpenTag(
        int tag
    ) ;

        bool
    Degenerate(
    ) const;

        bool
    BoundaryEdge(
    ) const {
        return (m_faces[0].IsEmpty() || m_faces[1].IsEmpty());
    };
    

};

class LOD_TriFace {
public:

    LOD_VertexInd m_verts[3];

    LOD_TriFace(
    );

    // Elementary helper methods

        void
    SwapVertex(
        LOD_VertexInd old_v,
        LOD_VertexInd new_v
    );

        bool
    SelectTag(
    ) const;

        void
    SetSelectTag(
        bool tag
    );

        int
    OpenTag(
    );
        void
    SetOpenTag(
        int tag
    );

        bool
    Degenerate(
    );

        void
    CopyVerts(
        int * index_ptr
    );

};
    
#endif