Method convert

src/ifcgeom/kernels/opencascade/loop.cpp:235–378

#include "../../../ifcparse/IfcFile.h"

bool OpenCascadeKernel::convert(const taxonomy::loop::ptr loop, TopoDS_Wire& wire) {
	TopTools_ListOfShape converted_segments;

	for (auto& segment : loop->children) {
		TopoDS_Wire segment_wire;
		try {
			segment_wire = boost::get<TopoDS_Wire>(convert_curve(segment));
		} catch (...) {
			// @todo we should do some better logging here and catch specific exceptions
			// but most notably we just want to continue processing when there are
			// duplicate vertices in our loop (or remove them earlier in the mapping?).
			continue;
		}

#ifdef IFOPSH_DEBUG
		std::ostringstream o;
		segment->print(o);
		TopoDS_Vertex v0, v1;
		TopExp::Vertices(segment_wire, v0, v1);
		gp_Pnt p0 = BRep_Tool::Pnt(v0);
		gp_Pnt p1 = BRep_Tool::Pnt(v1);
		o << "p0 " << p0.X() << " " << p0.Y() << " " << p0.Z() << std::endl;
		o << "p1 " << p1.X() << " " << p1.Y() << " " << p1.Z() << std::endl;
		auto o_str = o.str();
		std::wcout << o_str.c_str() << std::endl;
#endif

		ShapeFix_ShapeTolerance FTol;
		FTol.SetTolerance(segment_wire, precision_, TopAbs_WIRE);

		converted_segments.Append(segment_wire);
	}

	if (converted_segments.Extent() == 0) {
		Logger::Message(Logger::LOG_ERROR, "No segment successfully converted:", loop->instance);
		return false;
	}

	BRepBuilderAPI_MakeWire w;
	TopoDS_Vertex wire_first_vertex, wire_last_vertex, edge_first_vertex, edge_last_vertex;

	TopTools_ListIteratorOfListOfShape it(converted_segments);

	bool force_close = false;
	if (loop->instance && loop->instance->as<IfcUtil::IfcBaseEntity>() && loop->instance->as<IfcUtil::IfcBaseEntity>()->file_) {
		auto* inst = loop->instance->as<IfcUtil::IfcBaseEntity>();
		auto* file = loop->instance->as<IfcUtil::IfcBaseEntity>()->file_;
		auto profile = file->getInverse(inst->id(), file->schema()->declaration_by_name("IfcProfileDef"), -1);
		force_close = profile && profile->size() > 0;
	}

	wire_builder bld(precision_, loop->instance ? loop->instance->as<IfcUtil::IfcBaseEntity>() : nullptr);
	shape_pair_enumerate(it, bld, force_close);
	wire = bld.wire();

	TopTools_IndexedDataMapOfShapeListOfShape map;
	TopExp::MapShapesAndAncestors(wire, TopAbs_VERTEX, TopAbs_EDGE, map);