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// File: MeshVS_DataSource3D.cxx
// Created: Fri Jan 21 2005
// Author: Alexander SOLOVYOV
// Copyright: Open CASCADE 2005
#include <MeshVS_DataSource3D.ixx>
//================================================================
// Function : GetPrismTopology
// Purpose :
//================================================================
Handle( MeshVS_HArray1OfSequenceOfInteger )
MeshVS_DataSource3D::GetPrismTopology( const Standard_Integer BasePoints ) const
{
if( myPrismTopos.IsBound( BasePoints ) )
return myPrismTopos.Find( BasePoints );
else
{
Handle( MeshVS_HArray1OfSequenceOfInteger ) result = CreatePrismTopology( BasePoints );
if( !result.IsNull() )
( ( MeshVS_DataSource3D* )this )->myPrismTopos.Bind( BasePoints, result );
return result;
}
}
//================================================================
// Function : GetPyramidTopology
// Purpose :
//================================================================
Handle( MeshVS_HArray1OfSequenceOfInteger )
MeshVS_DataSource3D::GetPyramidTopology( const Standard_Integer BasePoints ) const
{
if( myPyramidTopos.IsBound( BasePoints ) )
return myPyramidTopos.Find( BasePoints );
else
{
Handle( MeshVS_HArray1OfSequenceOfInteger ) result = CreatePyramidTopology( BasePoints );
if( !result.IsNull() )
( ( MeshVS_DataSource3D* )this )->myPyramidTopos.Bind( BasePoints, result );
return result;
}
}
//================================================================
// Function : CreatePrismTopology
// Purpose :
//================================================================
Handle( MeshVS_HArray1OfSequenceOfInteger )
MeshVS_DataSource3D::CreatePrismTopology( const Standard_Integer BasePoints )
{
Handle( MeshVS_HArray1OfSequenceOfInteger ) result;
if( BasePoints>=3 )
{
result = new MeshVS_HArray1OfSequenceOfInteger( 1, BasePoints+2 );
Standard_Integer i, next;
for( i=0; i<BasePoints; i++ )
{
result->ChangeValue( 1 ).Prepend( i );
result->ChangeValue( 2 ).Append( i+BasePoints );
result->ChangeValue( 3+i ).Prepend( i );
result->ChangeValue( 3+i ).Prepend( i+BasePoints );
next = ( i+1 ) % BasePoints;
result->ChangeValue( 3+i ).Prepend( next+BasePoints );
result->ChangeValue( 3+i ).Prepend( next );
}
}
return result;
}
//================================================================
// Function : CreatePyramidTopology
// Purpose :
//================================================================
Handle( MeshVS_HArray1OfSequenceOfInteger )
MeshVS_DataSource3D::CreatePyramidTopology( const Standard_Integer BasePoints )
{
Handle( MeshVS_HArray1OfSequenceOfInteger ) result;
if( BasePoints>=3 )
{
result = new MeshVS_HArray1OfSequenceOfInteger( 1, BasePoints+1 );
for( Standard_Integer i=1; i<=BasePoints; i++ )
{
result->ChangeValue( 1 ).Prepend( i );
result->ChangeValue( 1+i ).Append( 0 );
result->ChangeValue( 1+i ).Append( i );
result->ChangeValue( 1+i ).Append( i%BasePoints + 1 );
}
}
return result;
}
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