IfcOpenShell/src/ifcgeom/mapping/IfcSurfaceCurveSweptAreaSolid.cpp

/********************************************************************************
 *                                                                              *
 * 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.                          *
 *                                                                              *
 * 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::IfcSurfaceCurveSweptAreaSolid* inst) {
	taxonomy::face::ptr f = taxonomy::cast<taxonomy::face>(map(inst->SweptArea()));

	taxonomy::matrix4::ptr matrix;
	bool has_position = true;
#ifdef SCHEMA_IfcSweptAreaSolid_Position_IS_OPTIONAL
	has_position = inst->Position() != nullptr;
#endif
	if (has_position) {
		matrix = taxonomy::cast<taxonomy::matrix4>(map(inst->Position()));
	}

	auto scs = taxonomy::make<taxonomy::surface_curve_sweep>(matrix, f, map(inst->ReferenceSurface()), map(inst->Directrix()));
	scs->matrix = matrix;

	return scs;

	/*
	gp_Trsf directrix;
	TopoDS_Shape face;
	TopoDS_Face surface_face;
	TopoDS_Wire wire, section;

	const bool is_plane = inst->ReferenceSurface()->declaration().is(IfcSchema::IfcPlane::Class());

	if (!is_plane) {
		TopoDS_Shape surface_shell;
		if (!convert_shape(inst->ReferenceSurface(), surface_shell)) {
			Logger::Error("Failed to convert reference surface", l);
			return false;
		}
		if (util::count(surface_shell, TopAbs_FACE) != 1) {
			Logger::Error("Non-continuous reference surface", l);
			return false;
		}
		surface_face = TopoDS::Face(TopExp_Explorer(surface_shell, TopAbs_FACE).Current());
	}

	gp_Pln pln;
	gp_Pnt directrix_origin;
	gp_Vec directrix_tangent;
	bool directrix_on_plane = is_plane;

	if (is_plane) {
		IfcGeom::Kernel::convert((IfcSchema::IfcPlane*) inst->ReferenceSurface(), pln);

		// As per Informal propositions 2: The Directrix shall lie on the ReferenceSurface.
		// This is not always the case with the test files in the repository. I am not sure
		// how to deal with this and whether my interpretation of the propositions is
		// correct. However, if it has been asserted that the vertices of the directrix do
		// not conform to the ReferenceSurface, the ReferenceSurface is ignored.
		{
			for (TopExp_Explorer exp(wire, TopAbs_VERTEX); exp.More(); exp.Next()) {
				if (pln.Distance(BRep_Tool::Pnt(TopoDS::Vertex(exp.Current()))) > ALMOST_ZERO) {
					directrix_on_plane = false;
					Logger::Message(Logger::LOG_WARNING, "The Directrix does not lie on the ReferenceSurface", l);
					break;
				}
			}
		}
	}

	{
		TopExp_Explorer exp(wire, TopAbs_EDGE);
		TopoDS_Edge edge = TopoDS::Edge(exp.Current());
		double u0, u1;
		Handle(Geom_Curve) crv = BRep_Tool::Curve(edge, u0, u1);
		crv->D1(u0, directrix_origin, directrix_tangent);
	}

	if (is_plane && pln.Axis().Direction().IsNormal(directrix_tangent, Precision::Approximation()) && directrix_on_plane) {
		directrix.SetTransformation(gp_Ax3(directrix_origin, directrix_tangent, pln.Axis().Direction()), gp::XOY());
	} else if (!is_plane) {
		ShapeAnalysis_Surface sas(BRep_Tool::Surface(surface_face));
		auto pnt2d = sas.ValueOfUV(directrix_origin, getValue(GV_PRECISION) * 10.);
		BRepGProp_Face prop(surface_face);
		gp_Pnt _;
		gp_Vec surface_normal;
		prop.Normal(pnt2d.X(), pnt2d.Y(), _, surface_normal);
		directrix.SetTransformation(gp_Ax3(directrix_origin, directrix_tangent, surface_normal), gp::XOY());
	} else {
		directrix.SetTransformation(gp_Ax3(directrix_origin, directrix_tangent), gp::XOY());
	}
	face = BRepBuilderAPI_Transform(face, directrix);

	if (!is_plane) {
		TopExp_Explorer exp(wire, TopAbs_EDGE);
		for (; exp.More(); exp.Next()) {
			ShapeFix_Edge sfe;
			sfe.FixAddPCurve(TopoDS::Edge(exp.Current()), surface_face, false, getValue(GV_PRECISION));
		}
	}

	// NB: Note that StartParam and EndParam param are ignored and the assumption is
	// made that the parametric range over which to be swept matches the IfcCurve in
	// its entirety.
	BRepOffsetAPI_MakePipeShell builder(wire);

	{ TopExp_Explorer exp(face, TopAbs_WIRE);
	section = TopoDS::Wire(exp.Current()); }

	builder.Add(section);
	builder.SetTransitionMode(BRepBuilderAPI_RightCorner);
	if (directrix_on_plane) {
		builder.SetMode(pln.Axis().Direction());
	} else if (!is_plane) {
		builder.SetMode(surface_face);
	}
	builder.Build();
	builder.MakeSolid();
	shape = builder.Shape();

	if (has_position) {
		// IfcSweptAreaSolid.Position (trsf) is an IfcAxis2Placement3D
		// and therefore has a unit scale factor
		shape.Move(trsf);
	}

	return true;
	*/
}