void ForceValidityVisitor::visit( MultiPolygon& g )
{
g.forceValidityFlag( valid_ );
for ( size_t i = 0; i < g.numGeometries(); i++ ) {
visit( g.polygonN( i ) );
}
}
std::auto_ptr< MultiLineString > straightSkeleton( const MultiPolygon& g )
{
std::auto_ptr< MultiLineString > result( new MultiLineString );
for ( size_t i = 0; i < g.numGeometries(); i++ ){
Polygon_with_holes_2 polygon = g.polygonN(i).toPolygon_with_holes_2() ;
boost::shared_ptr< Straight_skeleton_2 > skeleton = CGAL::create_interior_straight_skeleton_2( polygon ) ;
straightSkeletonToMultiLineString( *skeleton, *result ) ;
}
return result ;
}
void BoundaryVisitor::visit( const MultiPolygon& g )
{
graph::GeometryGraph graph ;
graph::GeometryGraphBuilder graphBuilder( graph ) ;
for ( size_t i = 0; i < g.numGeometries(); i++ ) {
graphBuilder.addPolygon( g.polygonN( i ) );
}
getBoundaryFromPolygons( graph ) ;
}
std::auto_ptr< Geometry > building(
const MultiPolygon& g,
const Kernel::FT& wallHeight,
const Kernel::FT& roofSlope
)
{
std::auto_ptr< MultiSolid > multiSolid( new MultiSolid );
for ( size_t i = 0; i < g.numGeometries(); i++ ) {
multiSolid->addGeometry( building( g.polygonN( i ), wallHeight, roofSlope ).release() );
}
return std::auto_ptr< Geometry >( multiSolid.release() );
}
void WktWriter::write( const MultiPolygon & g )
{
_s << "MULTIPOLYGON" ;
if ( g.isEmpty() ){
_s << " EMPTY" ;
return ;
}
_s << "(";
for ( size_t i = 0; i < g.numGeometries(); i++ ){
if ( i != 0 )
_s << "," ;
writeInner( g.geometryN(i).as< Polygon >() );
}
_s << ")";
}
void GetPointsVisitor::visit( const MultiPolygon& g )
{
for ( size_t i = 0; i < g.numGeometries(); i++ ) {
visit( g.polygonN( i ) );
}
}