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//-----------------------------------------------------------------------------
// BSPLIB HEADER: Mapping.h
//
// Copyright (c) 1996-1998 by Markus Hadwiger
// All Rights Reserved.
//-----------------------------------------------------------------------------
#ifndef _MAPPING_H_
#define _MAPPING_H_
// bsplib header files
#include "BspLibDefs.h"
#include "Chunk.h"
#include "SystemIO.h"
#include "Vertex.h"
BSPLIB_NAMESPACE_BEGIN
#define V_FACEVTXMAX 32 // vertices per face (actually, per polygon)
// class that describes mapping for face with many vertices -------------------
//
class Mapping : public virtual SystemIO {
void Error( int vertindx );
public:
Mapping() { numvertexindxs = 0; }
~Mapping() { }
void InsertFaceVertex( int vindx ) { facevertexindxs[ numvertexindxs++ ] = vindx; }
void SetCorrespondence( int vindx, Vertex2 vertex );
Vertex2 FetchMapPoint( int vertindx );
int getNumVertices() { return numvertexindxs; }
void setNumVertices( int num ) { numvertexindxs = num; }
void setMappingCoordinates( int k, const Vertex2& vertex);
void WriteMappingInfo( FILE *fp ) const;
private:
int numvertexindxs;
int facevertexindxs[ V_FACEVTXMAX ];
Vertex2 mappingcoordinates[ V_FACEVTXMAX ];
};
// typedef chunk of mappings --------------------------------------------------
typedef Chunk<Mapping> MappingChunk;
// set mapping coordinates ----------------------------------------------------
inline void Mapping::setMappingCoordinates( int k, const Vertex2& vertex)
{
if ( k < V_FACEVTXMAX )
mappingcoordinates[ k ] = vertex;
else
Error( k );
}
// set single correspondence -------------------------------------------------
inline void Mapping::SetCorrespondence( int vindx, Vertex2 vertex )
{
if ( numvertexindxs < V_FACEVTXMAX ) {
facevertexindxs[ numvertexindxs ] = vindx;
mappingcoordinates[ numvertexindxs ] = vertex;
numvertexindxs++;
} else {
Error( numvertexindxs );
}
}
// fetch corresponding mapping to face vertex ---------------------------------
inline Vertex2 Mapping::FetchMapPoint( int vertindx )
{
for ( int i = 0; i < numvertexindxs; i++ )
if ( facevertexindxs[ i ] == vertindx )
return mappingcoordinates[ i ];
Error( vertindx );
return Vertex2( 0, 0 ); // never reached
}
BSPLIB_NAMESPACE_END
#endif // _MAPPING_H_
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