IfcOpenShell/src/ifcgeom/mapping/IfcRepresentation.cpp

/********************************************************************************
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 * This file is part of IfcOpenShell.                                           *
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 * IfcOpenShell is free software: you can redistribute it and/or modify         *
 * it under the terms of the Lesser GNU General Public License as published by  *
 * the Free Software Foundation, either version 3.0 of the License, or          *
 * (at your option) any later version.                                          *
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 * IfcOpenShell 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                 *
 * Lesser GNU General Public License for more details.                          *
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 * You should have received a copy of the Lesser GNU General Public License     *
 * along with this program. If not, see <http://www.gnu.org/licenses/>.         *
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 ********************************************************************************/

#include "mapping.h"
#define mapping POSTFIX_SCHEMA(mapping)
using namespace ifcopenshell::geometry;

taxonomy::ptr mapping::map_impl(const IfcSchema::IfcRepresentation* inst) {
	const bool items_to_include = !this->settings_.get<settings::OutputDimensionality>().get();

	auto items = map_to_collection(this, inst->Items());
	if (!items) {
		return nullptr;
	}

	/*
	// Don't blindly flatten, as we're culling away IfcMappedItem transformations

	auto flat = flatten(items);
	if (flat == nullptr) {
		return nullptr;
	}
	*/

	// @todo
	// if (s.ShapeType() == TopAbs_COMPOUND && TopoDS_Iterator(s).More() && TopoDS_Iterator(s).Value().ShapeType() == TopAbs_SOLID) {

	auto filtered = filter_in_place(items, [&items_to_include](taxonomy::ptr i) {
		auto is_curve = (i->kind() == taxonomy::EDGE || i->kind() == taxonomy::LOOP || i->kind() == taxonomy::PIECEWISE_FUNCTION);
		if (is_curve && items_to_include == settings::SURFACES_AND_SOLIDS) {
			return false;
		} else if (!is_curve && items_to_include == settings::CURVES) {
			return false;
		} else {
			return true;
		}
	});

	if (filtered->children.empty()) {
		return nullptr;
	}

	return filtered;
}

/*
taxonomy::ptr mapping::map_impl(const IfcSchema::IfcRepresentation* l, ConversionResults& shapes) {
	IfcSchema::IfcRepresentationItem::list::ptr items = inst->Items();
	bool part_succes = false;
	if ( items->size() ) {
		for ( IfcSchema::IfcRepresentationItem::list::it it = items->begin(); it != items->end(); ++ it ) {
			IfcSchema::IfcRepresentationptr representation_item = *it;
			if ( shape_type(representation_item) == ST_SHAPELIST ) {
				part_succes |= convert_shapes(*it, shapes);
			} else {
				TopoDS_Shape s;
				if (convert_shape(representation_item, s)) {
					if (s.ShapeType() == TopAbs_COMPOUND && TopoDS_Iterator(s).More() && TopoDS_Iterator(s).Value().ShapeType() == TopAbs_SOLID) {
						TopoDS_Iterator topo_it(s);
						for (; topo_it.More(); topo_it.Next()) {
							shapes.push_back(ConversionResult(representation_item->data().id(), topo_it.Value(), get_style(representation_item)));
						}
					} else {
						shapes.push_back(ConversionResult(representation_item->data().id(), s, get_style(representation_item)));
					}
					part_succes |= true;
				}
			}
		}
	}
	return part_succes;
}
*/