LOD_MeshPrimitives.h

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/*
 * $Id: LOD_MeshPrimitives.h 35147 2011-02-25 10:47:28Z jesterking $
 * ***** 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