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// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=4 sw=2 sts=2:
// SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
// SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
#ifndef DUNE_PYTHON_GEOMETRY_TYPE_HH
#define DUNE_PYTHON_GEOMETRY_TYPE_HH
#include <cassert>
#include <dune/common/exceptions.hh>
#include <dune/geometry/type.hh>
#include <dune/geometry/typeindex.hh>
#include <dune/python/pybind11/operators.h>
#include <dune/python/pybind11/pybind11.h>
namespace Dune
{
// to_string for GeometryType
// --------------------------
inline static std::string to_string ( const GeometryType &type )
{
if( type.isNone() )
return "none(" + std::to_string( type.dim() ) + ")";
switch( type.dim() )
{
case 0:
return "vertex";
case 1:
return "line";
case 2:
return (type.isSimplex() ? "triangle" : "quadrilateral");
case 3:
if( type.isSimplex() )
return "tetrahedron";
else if( type.isHexahedron() )
return "hexahedron";
else if( type.isPyramid() )
return "pyramid";
else if( type.isPrism() )
return "prism";
default:
if( type.isSimplex() )
return "simplex(" + std::to_string( type.dim() ) + ")";
else if( type.isCube() )
return "cube(" + std::to_string( type.dim() ) + ")";
else
return "general(" + std::to_string( type.id() ) + ", " + std::to_string( type.dim() ) + ")";
}
}
// geometryTypeFromString
// ----------------------
inline static GeometryType geometryTypeFromString ( const std::string &s )
{
typedef GeometryType (*Constructor) ( const std::vector< std::string > & );
static const char *constructorNames[] = {
"cube",
"general",
"hexahedron",
"line",
"none",
"prism",
"pyramid",
"quadrilateral",
"simplex",
"tetrahedron",
"triangle",
"vertex"
};
static const Constructor constructors[]
= {
// cube
[] ( const std::vector< std::string > &args ) {
if( args.size() != 1 )
DUNE_THROW( Exception, "GeometryType 'cube' requires integer argument for dimension." );
return GeometryTypes::cube( std::stoul( args[ 0 ] ) );
},
// general
[] ( const std::vector< std::string > &args ) {
if( args.size() != 2 )
DUNE_THROW( Exception, "GeometryType 'general' requires two integer arguments, topologyId and dimension." );
const auto id = std::stoul( args[ 0 ] );
const auto dim = std::stoul( args[ 1 ] );
if( id >= Dune::Impl::numTopologies( dim ) )
DUNE_THROW( Exception, "Topology id " << id << " too large for dimension " << dim << "." );
return GeometryType( id, dim );
},
// hexahedron
[] ( const std::vector< std::string > &args ) {
if( !args.empty() )
DUNE_THROW( Exception, "GeometryType 'hexahedron' does not require arguments." );
return GeometryTypes::hexahedron;
},
// line
[] ( const std::vector< std::string > &args ) {
if( !args.empty() )
DUNE_THROW( Exception, "GeometryType 'line' does not require arguments." );
return GeometryTypes::line;
},
// none
[] ( const std::vector< std::string > &args ) {
if( args.size() != 1 )
DUNE_THROW( Exception, "GeometryType 'none' requires integer argument for dimension." );
return GeometryTypes::none( std::stoul( args[ 0 ] ) );
},
// prism
[] ( const std::vector< std::string > &args ) {
if( !args.empty() )
DUNE_THROW( Exception, "GeometryType 'prism' does not require arguments." );
return GeometryTypes::prism;
},
// pyramid
[] ( const std::vector< std::string > &args ) {
if( !args.empty() )
DUNE_THROW( Exception, "GeometryType 'pyramid' does not require arguments." );
return GeometryTypes::pyramid;
},
// quadrilateral
[] ( const std::vector< std::string > &args ) {
if( !args.empty() )
DUNE_THROW( Exception, "GeometryType 'quadrilateral' does not require arguments." );
return GeometryTypes::quadrilateral;
},
// simplex
[] ( const std::vector< std::string > &args ) {
if( args.size() != 1 )
DUNE_THROW( Exception, "GeometryType 'simplex' requires integer argument for dimension." );
return GeometryTypes::simplex( std::stoul( args[ 0 ] ) );
},
// tetrahedron
[] ( const std::vector< std::string > &args ) {
if( !args.empty() )
DUNE_THROW( Exception, "GeometryType 'tetrahedron' does not require arguments." );
return GeometryTypes::tetrahedron;
},
// triangle
[] ( const std::vector< std::string > &args ) {
if( !args.empty() )
DUNE_THROW( Exception, "GeometryType 'triangle' does not require arguments." );
return GeometryTypes::triangle;
},
// vertex
[] ( const std::vector< std::string > &args ) {
if( !args.empty() )
DUNE_THROW( Exception, "GeometryType 'vertex' does not require arguments." );
return GeometryTypes::vertex;
}
};
const std::size_t numConstructors = sizeof( constructorNames ) / sizeof( const char * );
// find constructor index
std::size_t n = s.find_first_of( '(' );
const std::string cName = s.substr( 0, n );
const std::size_t cIdx = std::lower_bound( constructorNames, constructorNames + numConstructors, cName ) - constructorNames;
if( (cIdx == numConstructors) || (constructorNames[ cIdx ] != cName) )
DUNE_THROW( Exception, "No DUNE geometry type constructor named '" << cName << "'." );
// obtain argument vector
std::vector< std::string > args;
if( n != std::string::npos )
{
while( s[ n ] != ')' )
{
// skip leading spaces
const std::size_t m = s.find_first_not_of( ' ', n+1 );
if( m == std::string::npos )
DUNE_THROW( Exception, "Invalid argument list." );
// find end of argument
n = s.find_first_of( ",)", m );
if( (n == std::string::npos) || (n == m) )
DUNE_THROW( Exception, "Invalid argument list." );
// remove trailing spaces from argument
const std::size_t k = s.find_last_not_of( ' ', n-1 );
assert( (k != std::string::npos) && (k >= m) );
args.push_back( s.substr( m, k-m+1 ) );
}
}
// call constructor
return constructors[ cIdx ]( args );
}
namespace Python
{
inline pybind11::class_< GeometryType > registerGeometryType ( pybind11::module scope )
{
pybind11::class_< GeometryType > cls( scope, "GeometryType" );
cls.def( pybind11::init( [] ( const std::string &s ) { return new GeometryType( geometryTypeFromString( s ) ); } ) );
cls.def_property_readonly( "isVertex", [] ( const GeometryType &self ) { return self.isVertex(); } );
cls.def_property_readonly( "isLine", [] ( const GeometryType &self ) { return self.isLine(); } );
cls.def_property_readonly( "isTriangle", [] ( const GeometryType &self ) { return self.isTriangle(); } );
cls.def_property_readonly( "isQuadrilateral", [] ( const GeometryType &self ) { return self.isQuadrilateral(); } );
cls.def_property_readonly( "isTetrahedron",[] ( const GeometryType &self ) { return self.isTetrahedron(); } );
cls.def_property_readonly( "isPyramid",[] ( const GeometryType &self ) { return self.isPyramid(); } );
cls.def_property_readonly( "isPrism", [] ( const GeometryType &self ) { return self.isPrism(); } );
cls.def_property_readonly( "isHexahedron", [] ( const GeometryType &self ) { return self.isHexahedron(); } );
cls.def_property_readonly( "isSimplex", [] ( const GeometryType &self ) { return self.isSimplex(); } );
cls.def_property_readonly( "isCube", [] ( const GeometryType &self ) { return self.isCube(); } );
cls.def_property_readonly( "isNone", [] ( const GeometryType &self ) { return self.isNone(); } );
cls.def( pybind11::self == pybind11::self );
cls.def( pybind11::self != pybind11::self );
cls.def( "__hash__", [] ( const GeometryType &self ) { return GlobalGeometryTypeIndex::index( self ); } );
cls.def( "__str__", [] ( const GeometryType &self ) { return to_string( self ); } );
cls.def_property_readonly( "dim", [] ( const GeometryType &self ) { return self.dim(); } );
cls.def_property_readonly( "dimension", [] ( const GeometryType &self ) { return self.dim(); } );
return cls;
}
} // namespace Python
} // namespace Dune
#endif // ifndef DUNE_PYTHON_GEOMETRY_TYPE_HH
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