mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-08-11 18:16:40 +00:00
Christian Kimmig
108 lines
3.6 KiB
C++
108 lines
3.6 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 <gp_Vec.hxx>
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#include <gp_Dir.hxx>
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#include <gp_Trsf.hxx>
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#include <BRepPrimAPI_MakePrism.hxx>
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#include "../ifcgeom/IfcGeom.h"
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// uncomment if you'd like negative or close to zero extrusion depths to succeed
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// #define PERMISSIVE_EXTRUSION
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#define Kernel MAKE_TYPE_NAME(Kernel)
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bool IfcGeom::Kernel::convert(const IfcSchema::IfcExtrudedAreaSolid* l, TopoDS_Shape& shape) {
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const double height = l->Depth() * getValue(GV_LENGTH_UNIT);
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if (height < getValue(GV_PRECISION)) {
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Logger::Message(Logger::LOG_ERROR, "Non-positive extrusion height encountered for:", l);
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#ifndef PERMISSIVE_EXTRUSION
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return false;
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#endif
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}
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TopoDS_Shape face;
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if ( !convert_face(l->SweptArea(),face) ) return false;
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gp_Trsf trsf;
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bool has_position = true;
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#ifdef SCHEMA_IfcSweptAreaSolid_Position_IS_OPTIONAL
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has_position = l->Position() != nullptr;
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#endif
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if (has_position) {
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IfcGeom::Kernel::convert(l->Position(), trsf);
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}
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#ifdef PERMISSIVE_EXTRUSION
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if (abs(height) < getValue(GV_PRECISION)) {
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shape = face;
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if (has_position && !shape.IsNull()) {
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// IfcSweptAreaSolid.Position (trsf) is an IfcAxis2Placement3D
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// and therefore has a unit scale factor
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shape.Move(trsf);
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}
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return true;
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}
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#endif
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gp_Dir dir;
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convert(l->ExtrudedDirection(),dir);
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shape.Nullify();
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/*
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// @nb This logic was probably flawed always as this does not by itself result in a valid compsolid...
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if (face.ShapeType() == TopAbs_COMPOUND) {
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// For compounds (most likely the result of a IfcCompositeProfileDef)
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// create a compound solid shape.
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TopExp_Explorer exp(face, TopAbs_FACE);
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TopoDS_CompSolid compound;
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BRep_Builder builder;
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builder.MakeCompSolid(compound);
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int num_faces_extruded = 0;
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for (; exp.More(); exp.Next(), ++num_faces_extruded) {
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builder.Add(compound, BRepPrimAPI_MakePrism(exp.Current(), height*dir));
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}
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if (num_faces_extruded) {
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shape = compound;
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}
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}
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*/
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if (shape.IsNull()) {
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shape = BRepPrimAPI_MakePrism(face, height*dir);
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}
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if (has_position && !shape.IsNull()) {
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// IfcSweptAreaSolid.Position (trsf) is an IfcAxis2Placement3D
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// and therefore has a unit scale factor
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shape.Move(trsf);
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}
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return !shape.IsNull();
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}
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