mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-08-11 18:16:40 +00:00
Thomas Krijnen
100 lines
3.8 KiB
C++
100 lines
3.8 KiB
C++
/********************************************************************************
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* *
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* This file is part of IfcOpenShell. *
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* *
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* IfcOpenShell is free software: you can redistribute it and/or modify *
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* it under the terms of the Lesser GNU General Public License as published by *
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* the Free Software Foundation, either version 3.0 of the License, or *
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* (at your option) any later version. *
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* *
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* IfcOpenShell is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* Lesser GNU General Public License for more details. *
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* *
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* You should have received a copy of the Lesser GNU General Public License *
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* along with this program. If not, see <http://www.gnu.org/licenses/>. *
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* *
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********************************************************************************/
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#include "OpenCascadeKernel.h"
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#include <BRepPrimAPI_MakeHalfSpace.hxx>
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#include <BRepBuilderAPI_MakeFace.hxx>
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#include <BRepPrimAPI_MakePrism.hxx>
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#include <BRepAlgoAPI_Common.hxx>
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#include <ShapeFix_Solid.hxx>
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using namespace ifcopenshell::geometry;
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using namespace ifcopenshell::geometry::kernels;
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using namespace IfcGeom;
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using namespace IfcGeom::util;
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bool OpenCascadeKernel::convert(const taxonomy::solid::ptr solid, TopoDS_Shape& result) {
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BRep_Builder BB;
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TopoDS_Shape S;
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if (solid->instance->declaration().is("IfcHalfSpaceSolid")) {
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// halfspace
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if (solid->children.size() != 1) {
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throw std::runtime_error("Unexpected number of children on solid");
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}
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auto face = solid->children[0]->children[0];
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const auto& m = taxonomy::cast<taxonomy::plane>(face->basis)->matrix->ccomponents();
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gp_Pln pln(convert_xyz2<gp_Pnt>(m.col(3)), convert_xyz2<gp_Dir>(m.col(2)));
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const gp_Pnt pnt = pln.Location().Translated(face->orientation.get_value_or(false) ? pln.Axis().Direction() : -pln.Axis().Direction());
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TopoDS_Shape halfspace = BRepPrimAPI_MakeHalfSpace(BRepBuilderAPI_MakeFace(pln), pnt).Solid();
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if (!face->children.empty()) {
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TopoDS_Wire wire;
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gp_GTrsf gtrsf;
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if (convert((taxonomy::loop::ptr)face->children[0], wire) && wire.Closed() && convert(face->matrix, gtrsf)) {
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gp_Trsf trsf = gtrsf.Trsf();
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TopoDS_Shape prism = BRepPrimAPI_MakePrism(BRepBuilderAPI_MakeFace(wire), gp_Vec(0, 0, 200));
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gp_Trsf down; down.SetTranslation(gp_Vec(0, 0, -100.0));
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// `trsf` and `down` both have a unit scale factor
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prism.Move(trsf*down);
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halfspace = BRepAlgoAPI_Common(halfspace, prism);
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}
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}
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result = halfspace;
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return true;
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}
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for (auto& s : solid->children) {
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TopoDS_Shape shl;
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convert(s, shl);
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if (shl.ShapeType() == TopAbs_SHELL) {
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ShapeFix_Solid solid;
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S = solid.SolidFromShell(TopoDS::Shell(shl));
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} else if (solid->children.size() == 1) {
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S = shl;
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} else {
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throw std::runtime_error("Unexpected configuration of subshapes");
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}
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}
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if (!S.IsNull()) {
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result = S;
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}
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}
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bool OpenCascadeKernel::convert_impl(const taxonomy::solid::ptr solid , IfcGeom::ConversionResults& results) {
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TopoDS_Shape shape;
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if (!convert(solid, shape)) {
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return false;
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}
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results.emplace_back(ConversionResult(
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solid->instance->data().id(),
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solid->matrix,
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new OpenCascadeShape(shape),
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solid->surface_style
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));
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return true;
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}
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