mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-08-10 17:58:20 +00:00
Thomas Krijnen
1802 lines
65 KiB
C++
1802 lines
65 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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/********************************************************************************
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* *
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* Implementations of the various conversion functions defined in IfcGeom.h *
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* *
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********************************************************************************/
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#include <set>
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#include <algorithm>
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#include <numeric>
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#include <Standard_Version.hxx>
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#include <gp_Pnt.hxx>
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#include <gp_Vec.hxx>
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#include <gp_Dir.hxx>
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#include <gp_Pnt2d.hxx>
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#include <gp_GTrsf.hxx>
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#include <gp_GTrsf2d.hxx>
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#include <gp_Trsf.hxx>
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#include <gp_Trsf2d.hxx>
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#include <gp_Ax3.hxx>
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#include <gp_Pln.hxx>
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#include <Geom_Line.hxx>
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#include <Geom_Circle.hxx>
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#include <Geom_Plane.hxx>
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#include <Geom_OffsetCurve.hxx>
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#include <Geom_OffsetSurface.hxx>
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#include <Geom_CylindricalSurface.hxx>
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#include <Geom_SurfaceOfLinearExtrusion.hxx>
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#include <GeomAPI_IntCS.hxx>
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#include <GeomAPI_IntSS.hxx>
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#include <BRepBndLib.hxx>
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#include <BRepOffsetAPI_Sewing.hxx>
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#include <BRepBuilderAPI_MakeFace.hxx>
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#include <BRepBuilderAPI_MakeEdge.hxx>
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#include <BRepBuilderAPI_MakeWire.hxx>
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#include <BRepBuilderAPI_MakePolygon.hxx>
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#include <BRepBuilderAPI_MakeVertex.hxx>
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#include <TopoDS.hxx>
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#include <TopoDS_Wire.hxx>
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#include <TopoDS_Face.hxx>
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#include <TopoDS_CompSolid.hxx>
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#include <TopExp.hxx>
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#include <TopExp_Explorer.hxx>
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#include <BRepPrimAPI_MakePrism.hxx>
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#include <BRepBuilderAPI_MakeShell.hxx>
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#include <BRepBuilderAPI_MakeSolid.hxx>
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#include <BRepPrimAPI_MakeHalfSpace.hxx>
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#include <BRepAlgoAPI_Cut.hxx>
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#include <BRepAlgoAPI_Fuse.hxx>
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#include <BRepAlgoAPI_Common.hxx>
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#include <BRepAlgoAPI_BooleanOperation.hxx>
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#if OCC_VERSION_HEX >= 0x70200
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#include <BRepAlgoAPI_Splitter.hxx>
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#endif
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#include <BRepAlgo_NormalProjection.hxx>
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#include <ShapeFix_Shape.hxx>
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#include <ShapeFix_ShapeTolerance.hxx>
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#include <ShapeFix_Solid.hxx>
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#include <ShapeFix_Shell.hxx>
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#include <ShapeAnalysis_Curve.hxx>
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#include <ShapeAnalysis_Surface.hxx>
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#include <BRepFilletAPI_MakeFillet2d.hxx>
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#include <TopLoc_Location.hxx>
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#include <GProp_GProps.hxx>
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#include <BRepGProp.hxx>
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#include <BRepBuilderAPI_Transform.hxx>
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#include <BRepBuilderAPI_GTransform.hxx>
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#include <BRepGProp_Face.hxx>
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#include <BRepCheck.hxx>
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#include <BRepCheck_Analyzer.hxx>
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#include <BRepMesh_IncrementalMesh.hxx>
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#include <BRepTools.hxx>
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#include <BRepTools_WireExplorer.hxx>
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#include <Poly_Triangulation.hxx>
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#include <Poly_Array1OfTriangle.hxx>
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#include <TopTools_IndexedMapOfShape.hxx>
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#include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
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#include <BOPAlgo_PaveFiller.hxx>
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#include <GCPnts_AbscissaPoint.hxx>
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#include <BRepClass3d_SolidClassifier.hxx>
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#include <GeomAPI_ExtremaCurveCurve.hxx>
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#include <Extrema_ExtCS.hxx>
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#include <ShapeAnalysis_Edge.hxx>
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#if OCC_VERSION_HEX >= 0x70200
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#include <BOPAlgo_Alerts.hxx>
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#endif
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#include "../ifcparse/macros.h"
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#include "../ifcparse/IfcSIPrefix.h"
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#include "../ifcparse/IfcFile.h"
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#include "../ifcgeom/IfcGeom.h"
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#include "../ifcgeom_schema_agnostic/IfcGeomTree.h"
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#include "../ifcgeom_schema_agnostic/boolean_utils.h"
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#include "../ifcgeom_schema_agnostic/wire_utils.h"
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#include "../ifcgeom_schema_agnostic/base_utils.h"
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#include "../ifcgeom_schema_agnostic/layerset.h"
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#include <memory>
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#include <thread>
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#if OCC_VERSION_HEX < 0x60900
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#ifdef _MSC_VER
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#pragma message("warning: You are linking against Open CASCADE version " OCC_VERSION_COMPLETE ". Version 6.9.0 introduces various improvements with relation to boolean operations. You are advised to upgrade.")
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#else
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#warning "You are linking against an older version of Open CASCADE. Version 6.9.0 introduces various improvements with relation to boolean operations. You are advised to upgrade."
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#endif
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#endif
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namespace {
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struct MAKE_TYPE_NAME(factory_t) {
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IfcGeom::Kernel* operator()(IfcParse::IfcFile* file) const {
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IfcGeom::MAKE_TYPE_NAME(Kernel)* k = new IfcGeom::MAKE_TYPE_NAME(Kernel);
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if (file) {
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double unit_magnitude = 1.;
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// Set unit information from file
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IfcSchema::IfcProject::list::ptr projects = file->instances_by_type<IfcSchema::IfcProject>();
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if (projects->size() == 1) {
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IfcSchema::IfcProject* project = *projects->begin();
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std::pair<std::string, double> unit_info = k->initializeUnits(project->UnitsInContext());
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unit_magnitude = unit_info.second;
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} else {
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Logger::Warning("A single IfcProject is expected (encountered " + boost::lexical_cast<std::string>(projects->size()) + "); unable to read unit information.");
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}
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// Set precision from file
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double lowest_precision_encountered = std::numeric_limits<double>::infinity();
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bool any_precision_encountered = false;
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IfcSchema::IfcGeometricRepresentationContext::list::it it;
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IfcSchema::IfcGeometricRepresentationContext::list::ptr contexts =
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file->instances_by_type_excl_subtypes<IfcSchema::IfcGeometricRepresentationContext>();
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for (it = contexts->begin(); it != contexts->end(); ++it) {
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IfcSchema::IfcGeometricRepresentationContext* context = *it;
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if (context->Precision() && (*context->Precision() * unit_magnitude * 10.) < lowest_precision_encountered) {
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// Some arbitrary factor that has proven to work better for the models in the set of test files.
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lowest_precision_encountered = *context->Precision() * unit_magnitude * 10.;
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any_precision_encountered = true;
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}
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}
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double precision_to_set = 1.e-5;
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if (any_precision_encountered) {
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if (lowest_precision_encountered < 1.e-7) {
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Logger::Message(Logger::LOG_WARNING, "Precision lower than 0.0000001 meter not enforced");
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precision_to_set = 1.e-7;
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} else {
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precision_to_set = lowest_precision_encountered;
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}
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}
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k->setValue(IfcGeom::Kernel::GV_PRECISION, precision_to_set);
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}
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return k;
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}
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};
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}
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void MAKE_INIT_FN(KernelImplementation_)(IfcGeom::impl::KernelFactoryImplementation* mapping) {
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static const std::string schema_name = STRINGIFY(IfcSchema);
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MAKE_TYPE_NAME(factory_t) factory;
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mapping->bind(schema_name, factory);
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}
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#define Kernel MAKE_TYPE_NAME(Kernel)
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void IfcGeom::Kernel::set_offset(const std::array<double, 3> &p_offset) {
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offset = gp_Vec(p_offset[0], p_offset[1], p_offset[2]);
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offset_and_rotation = util::combine_offset_and_rotation(offset, rotation);
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}
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void IfcGeom::Kernel::set_rotation(const std::array<double, 4> &p_rotation) {
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rotation = gp_Quaternion(p_rotation[0], p_rotation[1], p_rotation[2], p_rotation[3]);
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offset_and_rotation = util::combine_offset_and_rotation(offset, rotation);
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}
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namespace {
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struct opening_sorter {
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bool operator()(const std::pair<double, TopoDS_Shape>& a, const std::pair<double, TopoDS_Shape>& b) const {
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return a.first > b.first;
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}
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};
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}
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bool IfcGeom::Kernel::convert_openings(const IfcSchema::IfcProduct* entity, const IfcSchema::IfcRelVoidsElement::list::ptr& openings,
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const IfcGeom::IfcRepresentationShapeItems& entity_shapes, const gp_Trsf& entity_trsf, IfcGeom::IfcRepresentationShapeItems& cut_shapes) {
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util::boolean_settings bst;
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bst.attempt_2d = getValue(GV_BOOLEAN_ATTEMPT_2D) > 0.;
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bst.debug = getValue(GV_DEBUG_BOOLEAN) > 0.;
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bst.precision = getValue(GV_PRECISION);
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std::vector< std::pair<double, TopoDS_Shape> > opening_vector;
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for (IfcSchema::IfcRelVoidsElement::list::it it = openings->begin(); it != openings->end(); ++it) {
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IfcSchema::IfcRelVoidsElement* v = *it;
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IfcSchema::IfcFeatureElementSubtraction* fes = v->RelatedOpeningElement();
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if (fes->declaration().is(IfcSchema::IfcOpeningElement::Class())) {
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if (!fes->Representation()) continue;
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/*
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// Not yet implemented and tested, process opening placement up to parent wall
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// placement so that the matrix inverse can be eliminated.
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// @todo property check and handle the decomposition into parts (where element
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// carying geom and opening are in different branches).
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// @todo properly check whether opening correctly references wall placement
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// and fallback to matrix inverse when not the case.
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auto relative = entity;
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{
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auto ds = relative->Decomposes();
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if (ds->size() == 1) {
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relative = (*ds->begin())->RelatingObject()->as<IfcSchema::IfcProduct>();
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}
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}
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set_conversion_placement_rel_to_instance(relative);
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*/
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// Convert the IfcRepresentation of the IfcOpeningElement
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gp_Trsf opening_trsf;
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if (fes->ObjectPlacement()) {
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try {
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convert(fes->ObjectPlacement(), opening_trsf);
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} catch (const std::exception& e) {
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Logger::Error(e);
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} catch (...) {
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Logger::Error("Failed to construct placement");
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}
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}
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// set_conversion_placement_rel_to_instance(nullptr);
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// Move the opening into the coordinate system of the IfcProduct
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opening_trsf.PreMultiply(entity_trsf.Inverted());
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IfcSchema::IfcProductRepresentation* prodrep = fes->Representation();
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IfcSchema::IfcRepresentation::list::ptr reps = prodrep->Representations();
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IfcGeom::IfcRepresentationShapeItems opening_shapes;
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for (IfcSchema::IfcRepresentation::list::it it2 = reps->begin(); it2 != reps->end(); ++it2) {
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if (IfcParse::traverse((*it2))->as<IfcSchema::IfcBoundingBox>()->size()) {
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continue;
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}
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convert_shapes(*it2, opening_shapes);
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}
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for (unsigned int i = 0; i < opening_shapes.size(); ++i) {
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TopoDS_Shape opening_shape_solid;
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const TopoDS_Shape& opening_shape_unlocated = util::ensure_fit_for_subtraction(opening_shapes[i].Shape(), opening_shape_solid, getValue(GV_PRECISION));
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gp_GTrsf gtrsf = opening_shapes[i].Placement();
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gtrsf.PreMultiply(opening_trsf);
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TopoDS_Shape opening_shape = util::apply_transformation(opening_shape_unlocated, gtrsf);
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opening_vector.push_back(std::make_pair(util::min_edge_length(opening_shape), opening_shape));
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}
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}
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}
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std::sort(opening_vector.begin(), opening_vector.end(), opening_sorter());
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// Iterate over the shapes of the IfcProduct
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for (IfcGeom::IfcRepresentationShapeItems::const_iterator it3 = entity_shapes.begin(); it3 != entity_shapes.end(); ++it3) {
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TopoDS_Compound C;
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BRep_Builder B;
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B.MakeCompound(C);
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TopoDS_Shape combined_result;
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std::list<TopoDS_Shape> parts;
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bool is_multiple = it3->Shape().ShapeType() == TopAbs_COMPOUND && TopoDS_Iterator(it3->Shape()).More() && util::is_nested_compound_of_solid(it3->Shape());
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if (is_multiple) {
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TopoDS_Iterator sit(it3->Shape());
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for (; sit.More(); sit.Next()) {
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parts.push_back(sit.Value());
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}
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} else {
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parts.push_back(it3->Shape());
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}
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for (auto& entity_part : parts) {
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bool is_manifold = util::is_manifold(entity_part);
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if (!is_manifold) {
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Logger::Warning("Non-manifold first operand");
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}
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TopoDS_Shape entity_part_result;
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for (int as_shell = 0; as_shell < 2; ++as_shell) {
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TopoDS_Shape entity_shape_solid;
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TopoDS_Shape entity_shape_unlocated;
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if (as_shell) {
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entity_shape_unlocated = entity_part;
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} else {
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entity_shape_unlocated = util::ensure_fit_for_subtraction(entity_part, entity_shape_solid, getValue(GV_PRECISION));
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}
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const gp_GTrsf& entity_shape_gtrsf = it3->Placement();
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if (entity_shape_gtrsf.Form() == gp_Other) {
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Logger::Message(Logger::LOG_WARNING, "Applying non uniform transformation to:", entity);
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}
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TopoDS_Shape entity_shape = util::apply_transformation(entity_shape_unlocated, entity_shape_gtrsf);
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TopoDS_Shape result = entity_shape;
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auto it = opening_vector.begin();
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auto jt = it;
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for (;; ++it) {
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if (it == opening_vector.end() || jt->first / it->first > 10.) {
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TopTools_ListOfShape opening_list;
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for (auto kt = jt; kt < it; ++kt) {
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opening_list.Append(kt->second);
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}
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TopoDS_Shape intermediate_result;
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if (util::boolean_operation(bst, result, opening_list, BOPAlgo_CUT, intermediate_result)) {
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result = intermediate_result;
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} else {
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Logger::Message(Logger::LOG_ERROR, "Opening subtraction failed for " + boost::lexical_cast<std::string>(std::distance(jt, it)) + " openings", entity);
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}
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jt = it;
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}
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if (it == opening_vector.end()) {
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break;
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}
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}
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int result_n_faces = util::count(result, TopAbs_FACE);
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if (!is_manifold && as_shell == 0 && result_n_faces == 0) {
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// If we have a non-manifold first operand and our first attempt
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// on a Solid-Solid subtraction yielded a empty result (no faces)
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// or a strange result, a larger number of faces with the original input
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// included. Then retry (another iteration on the for-loop on as-shell)
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// where we keep the first operand as is (a compound of faces probably,
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// unless --orient-shells was activated in which case we're already lost).
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if (!is_manifold) {
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Logger::Warning("Retrying boolean operation on individual faces");
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}
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continue;
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}
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entity_part_result = result;
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// For manifold first operands we're not even going to try if processing
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// as loose faces gives a better result.
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break;
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}
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if (is_multiple) {
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B.Add(C, entity_part_result);
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} else {
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combined_result = entity_part_result;
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}
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}
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if (is_multiple) {
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combined_result = C;
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}
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cut_shapes.push_back(IfcGeom::IfcRepresentationShapeItem(it3->ItemId(), combined_result, it3->StylePtr()));
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}
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return true;
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}
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void IfcGeom::Kernel::setValue(GeomValue var, double value) {
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switch (var) {
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case GV_DEFLECTION_TOLERANCE:
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deflection_tolerance = value;
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break;
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case GV_LENGTH_UNIT:
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ifc_length_unit = value;
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break;
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case GV_PLANEANGLE_UNIT:
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ifc_planeangle_unit = value;
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break;
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case GV_PRECISION:
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modelling_precision = value;
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break;
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case GV_DIMENSIONALITY:
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dimensionality = value;
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break;
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case GV_MAX_FACES_TO_ORIENT:
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max_faces_to_orient = value;
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break;
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case GV_LAYERSET_FIRST:
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layerset_first = value;
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break;
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case GV_DISABLE_BOOLEAN_RESULT:
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disable_boolean_result = value;
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break;
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case GV_NO_WIRE_INTERSECTION_CHECK:
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no_wire_intersection_check = value;
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break;
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case GV_PRECISION_FACTOR:
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precision_factor = value;
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break;
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case GV_NO_WIRE_INTERSECTION_TOLERANCE:
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no_wire_intersection_tolerance = value;
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break;
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case GV_DEBUG_BOOLEAN:
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boolean_debug_setting = value;
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break;
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case GV_BOOLEAN_ATTEMPT_2D:
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boolean_attempt_2d = value;
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break;
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default:
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throw std::runtime_error("Invalid setting");
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}
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}
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double IfcGeom::Kernel::getValue(GeomValue var) const {
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switch (var) {
|
|
case GV_DEFLECTION_TOLERANCE:
|
|
return deflection_tolerance;
|
|
case GV_MINIMAL_FACE_AREA:
|
|
// Considering a right-angled triangle, this about the smallest
|
|
// area you can obtain without the vertices being confused.
|
|
return modelling_precision * modelling_precision / 20.;
|
|
case GV_POINT_EQUALITY_TOLERANCE:
|
|
return modelling_precision;
|
|
case GV_LENGTH_UNIT:
|
|
return ifc_length_unit;
|
|
case GV_PLANEANGLE_UNIT:
|
|
return ifc_planeangle_unit;
|
|
case GV_PRECISION:
|
|
return modelling_precision;
|
|
case GV_DIMENSIONALITY:
|
|
return dimensionality;
|
|
case GV_MAX_FACES_TO_ORIENT:
|
|
return max_faces_to_orient;
|
|
case GV_LAYERSET_FIRST:
|
|
return layerset_first;
|
|
case GV_DISABLE_BOOLEAN_RESULT:
|
|
return disable_boolean_result;
|
|
case GV_NO_WIRE_INTERSECTION_CHECK:
|
|
return no_wire_intersection_check;
|
|
case GV_PRECISION_FACTOR:
|
|
return precision_factor;
|
|
case GV_NO_WIRE_INTERSECTION_TOLERANCE:
|
|
return no_wire_intersection_tolerance;
|
|
case GV_DEBUG_BOOLEAN:
|
|
return boolean_debug_setting;
|
|
case GV_BOOLEAN_ATTEMPT_2D:
|
|
return boolean_attempt_2d;
|
|
}
|
|
throw std::runtime_error("Invalid setting");
|
|
}
|
|
|
|
|
|
IfcSchema::IfcRelVoidsElement::list::ptr IfcGeom::Kernel::find_openings(IfcSchema::IfcProduct* product) {
|
|
std::vector<IfcSchema::IfcRelVoidsElement*> rs;
|
|
|
|
if ( product->declaration().is(IfcSchema::IfcElement::Class()) && !product->declaration().is(IfcSchema::IfcOpeningElement::Class()) ) {
|
|
IfcSchema::IfcElement* element = (IfcSchema::IfcElement*)product;
|
|
auto rels = element->HasOpenings();
|
|
rs.insert(rs.end(), rels->begin(), rels->end());
|
|
}
|
|
|
|
// Is the IfcElement a decomposition of an IfcElement with any IfcOpeningElements?
|
|
IfcSchema::IfcObjectDefinition* obdef = product->as<IfcSchema::IfcObjectDefinition>();
|
|
for (;;) {
|
|
auto decomposes = obdef->Decomposes();
|
|
if (decomposes->size() != 1) break;
|
|
IfcSchema::IfcObjectDefinition* rel_obdef = (*decomposes->begin())->RelatingObject();
|
|
if ( rel_obdef->declaration().is(IfcSchema::IfcElement::Class()) && !rel_obdef->declaration().is(IfcSchema::IfcOpeningElement::Class()) ) {
|
|
IfcSchema::IfcElement* element = (IfcSchema::IfcElement*)rel_obdef;
|
|
auto rels = element->HasOpenings();
|
|
rs.insert(rs.end(), rels->begin(), rels->end());
|
|
}
|
|
|
|
obdef = rel_obdef;
|
|
}
|
|
|
|
// Filter openings in Reference view, solely marked as Reference.
|
|
IfcSchema::IfcRelVoidsElement::list::ptr openings(new IfcSchema::IfcRelVoidsElement::list);
|
|
std::for_each(rs.begin(), rs.end(), [&openings](IfcSchema::IfcRelVoidsElement* rel) {
|
|
if (rel->RelatedOpeningElement()->ObjectPlacement() && rel->RelatedOpeningElement()->Representation()) {
|
|
auto reps = rel->RelatedOpeningElement()->Representation()->Representations();
|
|
if (!(reps->size() == 1 && (*reps->begin())->RepresentationIdentifier().get_value_or("") == "Reference")) {
|
|
openings->push(rel);
|
|
}
|
|
}
|
|
});
|
|
|
|
return openings;
|
|
}
|
|
|
|
const IfcSchema::IfcMaterial* IfcGeom::Kernel::get_single_material_association(const IfcSchema::IfcProduct* product) {
|
|
IfcSchema::IfcMaterial* single_material = 0;
|
|
IfcSchema::IfcRelAssociatesMaterial::list::ptr associated_materials = product->HasAssociations()->as<IfcSchema::IfcRelAssociatesMaterial>();
|
|
if (associated_materials->size() == 1) {
|
|
|
|
IfcSchema::IfcMaterialSelect* associated_material = nullptr;
|
|
|
|
try {
|
|
associated_material = (*associated_materials->begin())->RelatingMaterial();
|
|
} catch(IfcParse::IfcException& e) {
|
|
Logger::Error(e.what());
|
|
}
|
|
|
|
if (associated_material) {
|
|
single_material = associated_material->as<IfcSchema::IfcMaterial>();
|
|
// NB: IfcMaterialLayerSets are also considered, regardless of --enable-layerset-slicing. Picking
|
|
// the first material (in accordance with other viewers) when layerset-slicing is disabled.
|
|
if (!single_material && associated_material->as<IfcSchema::IfcMaterialLayerSetUsage>()) {
|
|
IfcSchema::IfcMaterialLayerSet* layerset = associated_material->as<IfcSchema::IfcMaterialLayerSetUsage>()->ForLayerSet();
|
|
if (getValue(GV_LAYERSET_FIRST) > 0.0 ? layerset->MaterialLayers()->size() >= 1 : layerset->MaterialLayers()->size() == 1) {
|
|
IfcSchema::IfcMaterialLayer* layer = (*layerset->MaterialLayers()->begin());
|
|
if (layer->Material()) {
|
|
single_material = layer->Material();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return single_material;
|
|
}
|
|
|
|
IfcGeom::BRepElement* IfcGeom::Kernel::create_brep_for_representation_and_product(
|
|
const IteratorSettings& settings, IfcSchema::IfcRepresentation* representation, IfcSchema::IfcProduct* product)
|
|
{
|
|
std::stringstream representation_id_builder;
|
|
|
|
representation_id_builder << representation->data().id();
|
|
|
|
IfcGeom::Representation::BRep* shape;
|
|
IfcGeom::IfcRepresentationShapeItems shapes, shapes2;
|
|
|
|
if ( !convert_shapes(representation, shapes) ) {
|
|
return 0;
|
|
}
|
|
|
|
if (settings.get(IteratorSettings::APPLY_LAYERSETS)) {
|
|
TopoDS_Shape merge;
|
|
if (util::flatten_shape_list(shapes, merge, false, getValue(GV_PRECISION))) {
|
|
if (util::count(merge, TopAbs_FACE) > 0) {
|
|
std::vector<double> thickness;
|
|
std::vector<Handle_Geom_Surface> layers;
|
|
std::vector< std::vector<Handle_Geom_Surface> > folded_layers;
|
|
std::vector<std::shared_ptr<const SurfaceStyle>> styles;
|
|
if (convert_layerset(product, layers, styles, thickness)) {
|
|
|
|
IfcSchema::IfcRelAssociates::list::ptr associations = product->HasAssociations();
|
|
for (IfcSchema::IfcRelAssociates::list::it it = associations->begin(); it != associations->end(); ++it) {
|
|
IfcSchema::IfcRelAssociatesMaterial* associates_material = (**it).as<IfcSchema::IfcRelAssociatesMaterial>();
|
|
if (associates_material) {
|
|
unsigned layerset_id = associates_material->RelatingMaterial()->data().id();
|
|
representation_id_builder << "-layerset-" << layerset_id;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (styles.size() > 1) {
|
|
// If there's only a single layer there is no need to manipulate geometries.
|
|
bool success = true;
|
|
if (product->as<IfcSchema::IfcWall>() && fold_layers(product->as<IfcSchema::IfcWall>(), shapes, layers, thickness, folded_layers)) {
|
|
if (util::apply_folded_layerset(shapes, folded_layers, styles, shapes2, getValue(GV_PRECISION))) {
|
|
std::swap(shapes, shapes2);
|
|
success = true;
|
|
}
|
|
} else {
|
|
if (util::apply_layerset(shapes, layers, styles, shapes2, getValue(GV_PRECISION))) {
|
|
std::swap(shapes, shapes2);
|
|
success = true;
|
|
}
|
|
}
|
|
|
|
if (!success) {
|
|
Logger::Error("Failed processing layerset");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool material_style_applied = false;
|
|
|
|
const IfcSchema::IfcMaterial* single_material = get_single_material_association(product);
|
|
if (single_material) {
|
|
auto s = get_style(single_material);
|
|
for (IfcGeom::IfcRepresentationShapeItems::iterator it = shapes.begin(); it != shapes.end(); ++it) {
|
|
if (!it->hasStyle() && s) {
|
|
it->setStyle(s);
|
|
material_style_applied = true;
|
|
}
|
|
}
|
|
} else {
|
|
bool some_items_without_style = false;
|
|
for (IfcGeom::IfcRepresentationShapeItems::iterator it = shapes.begin(); it != shapes.end(); ++it) {
|
|
if (!it->hasStyle() && util::count(it->Shape(), TopAbs_FACE)) {
|
|
some_items_without_style = true;
|
|
break;
|
|
}
|
|
}
|
|
if (some_items_without_style) {
|
|
Logger::Warning("No material and surface styles for:", product);
|
|
}
|
|
}
|
|
|
|
if (material_style_applied) {
|
|
representation_id_builder << "-material-" << single_material->data().id();
|
|
}
|
|
|
|
if (settings.force_space_transparency() >= 0. && product->declaration().is("IfcSpace")) {
|
|
for (auto& s : shapes) {
|
|
if (s.hasStyle()) {
|
|
for (auto& p : style_cache) {
|
|
if (p.second == s.StylePtr()) {
|
|
std::const_pointer_cast<IfcGeom::SurfaceStyle>(p.second)->Transparency() = settings.force_space_transparency();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
int parent_id = -1;
|
|
try {
|
|
IfcUtil::IfcBaseEntity* parent_object = get_decomposing_entity(product);
|
|
if (parent_object && parent_object->as<IfcSchema::IfcObjectDefinition>()) {
|
|
parent_id = parent_object->data().id();
|
|
}
|
|
} catch (const std::exception& e) {
|
|
Logger::Error(e);
|
|
}
|
|
|
|
const std::string name = product->Name().get_value_or("");
|
|
const std::string guid = product->GlobalId();
|
|
|
|
gp_Trsf trsf;
|
|
try {
|
|
if (product->ObjectPlacement()) {
|
|
convert(product->ObjectPlacement(), trsf);
|
|
}
|
|
} catch (const std::exception& e) {
|
|
Logger::Error(e);
|
|
} catch (...) {
|
|
Logger::Error("Failed to construct placement");
|
|
}
|
|
|
|
// Does the IfcElement have any IfcOpenings?
|
|
// Note that openings for IfcOpeningElements are not processed
|
|
IfcSchema::IfcRelVoidsElement::list::ptr openings = find_openings(product);
|
|
|
|
const std::string product_type = product->declaration().name();
|
|
ElementSettings element_settings(settings, getValue(GV_LENGTH_UNIT), product_type);
|
|
|
|
if (!settings.get(IfcGeom::IteratorSettings::DISABLE_OPENING_SUBTRACTIONS) && openings && openings->size()) {
|
|
representation_id_builder << "-openings";
|
|
for (IfcSchema::IfcRelVoidsElement::list::it it = openings->begin(); it != openings->end(); ++it) {
|
|
representation_id_builder << "-" << (*it)->data().id();
|
|
}
|
|
|
|
IfcGeom::IfcRepresentationShapeItems opened_shapes;
|
|
bool caught_error = false;
|
|
try {
|
|
convert_openings(product,openings,shapes,trsf,opened_shapes);
|
|
} catch (const std::exception& e) {
|
|
Logger::Message(Logger::LOG_ERROR, std::string("Error processing openings for: ") + e.what() + ":", product);
|
|
caught_error = true;
|
|
} catch(...) {
|
|
Logger::Message(Logger::LOG_ERROR,"Error processing openings for:",product);
|
|
}
|
|
|
|
if (caught_error && opened_shapes.size() < shapes.size()) {
|
|
opened_shapes = shapes;
|
|
}
|
|
|
|
if (settings.get(IteratorSettings::USE_WORLD_COORDS)) {
|
|
for ( IfcGeom::IfcRepresentationShapeItems::iterator it = opened_shapes.begin(); it != opened_shapes.end(); ++ it ) {
|
|
it->prepend(trsf);
|
|
}
|
|
trsf = gp_Trsf();
|
|
representation_id_builder << "-world-coords";
|
|
}
|
|
shape = new IfcGeom::Representation::BRep(element_settings, representation_id_builder.str(), opened_shapes);
|
|
} else if (settings.get(IteratorSettings::USE_WORLD_COORDS)) {
|
|
for ( IfcGeom::IfcRepresentationShapeItems::iterator it = shapes.begin(); it != shapes.end(); ++ it ) {
|
|
it->prepend(trsf);
|
|
}
|
|
trsf = gp_Trsf();
|
|
representation_id_builder << "-world-coords";
|
|
shape = new IfcGeom::Representation::BRep(element_settings, representation_id_builder.str(), shapes);
|
|
} else {
|
|
shape = new IfcGeom::Representation::BRep(element_settings, representation_id_builder.str(), shapes);
|
|
}
|
|
|
|
std::string context_string = "";
|
|
if (representation->RepresentationIdentifier()) {
|
|
context_string = *representation->RepresentationIdentifier();
|
|
} else if (representation->ContextOfItems()->ContextType()) {
|
|
context_string = *representation->ContextOfItems()->ContextType();
|
|
}
|
|
|
|
auto elem = new BRepElement(
|
|
product->data().id(),
|
|
parent_id,
|
|
name,
|
|
product_type,
|
|
guid,
|
|
context_string,
|
|
trsf,
|
|
boost::shared_ptr<IfcGeom::Representation::BRep>(shape),
|
|
product
|
|
);
|
|
|
|
if (settings.get(IteratorSettings::VALIDATE_QUANTITIES)) {
|
|
auto rels = product->IsDefinedBy();
|
|
for (auto& rel : *rels) {
|
|
if (rel->as<IfcSchema::IfcRelDefinesByProperties>()) {
|
|
auto pdef = rel->as<IfcSchema::IfcRelDefinesByProperties>()->RelatingPropertyDefinition();
|
|
if (pdef->as<IfcSchema::IfcElementQuantity>()) {
|
|
std::string organization_name;
|
|
try {
|
|
// A couple of files are not according to the schema here.
|
|
organization_name = pdef->as<IfcSchema::IfcElementQuantity>()->OwnerHistory()->OwningApplication()->ApplicationDeveloper()->Name();
|
|
} catch (...) {}
|
|
if (organization_name == "IfcOpenShell") {
|
|
auto qs = pdef->as<IfcSchema::IfcElementQuantity>()->Quantities();
|
|
for (auto& q : *qs) {
|
|
if (q->as<IfcSchema::IfcQuantityArea>() && q->Name() == "Total Surface Area") {
|
|
double a_calc;
|
|
double a_file = q->as<IfcSchema::IfcQuantityArea>()->AreaValue();
|
|
if (elem->geometry().calculate_surface_area(a_calc)) {
|
|
double diff = std::abs(a_calc - a_file);
|
|
if (diff / std::sqrt(a_file) > getValue(GV_PRECISION)) {
|
|
Logger::Error("Validation of surface area failed for:", product);
|
|
} else {
|
|
Logger::Notice("Validation of surface area succeeded for:", product);
|
|
}
|
|
} else {
|
|
Logger::Error("Validation of surface area failed for:", product);
|
|
}
|
|
} else if (q->as<IfcSchema::IfcQuantityVolume>() && q->Name() == "Volume") {
|
|
double v_calc;
|
|
double v_file = q->as<IfcSchema::IfcQuantityVolume>()->VolumeValue();
|
|
if (elem->geometry().calculate_volume(v_calc)) {
|
|
double diff = std::abs(v_calc - v_file);
|
|
if (diff / std::sqrt(v_file) > getValue(GV_PRECISION)) {
|
|
Logger::Error("Validation of volume failed for:", product);
|
|
} else {
|
|
Logger::Notice("Validation of volume succeeded for:", product);
|
|
}
|
|
} else {
|
|
Logger::Error("Validation of volume failed for:", product);
|
|
}
|
|
} else if (q->as<IfcSchema::IfcPhysicalComplexQuantity>() && q->Name() == "Shape Validation Properties") {
|
|
auto qs2 = q->as<IfcSchema::IfcPhysicalComplexQuantity>()->HasQuantities();
|
|
bool all_succeeded = qs2->size() > 0;
|
|
for (auto& q2 : *qs2) {
|
|
if (q2->as<IfcSchema::IfcQuantityCount>() && q2->Name() == "Surface Genus" && q2->Description()) {
|
|
int item_id = boost::lexical_cast<int>((*q2->Description()).substr(1));
|
|
int genus = (int) q2->as<IfcSchema::IfcQuantityCount>()->CountValue();
|
|
for (auto& part : elem->geometry()) {
|
|
if (part.ItemId() == item_id) {
|
|
if (util::surface_genus(part.Shape()) != genus) {
|
|
all_succeeded = false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (!all_succeeded) {
|
|
Logger::Error("Validation of surface genus failed for:", product);
|
|
} else {
|
|
Logger::Notice("Validation of surface genus succeeded for:", product);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return elem;
|
|
}
|
|
|
|
IfcSchema::IfcRepresentation* IfcGeom::Kernel::representation_mapped_to(const IfcSchema::IfcRepresentation* representation) {
|
|
IfcSchema::IfcRepresentation* representation_mapped_to = 0;
|
|
try {
|
|
IfcSchema::IfcRepresentationItem::list::ptr items = representation->Items();
|
|
if (items->size() == 1) {
|
|
IfcSchema::IfcRepresentationItem* item = *items->begin();
|
|
if (item->declaration().is(IfcSchema::IfcMappedItem::Class())) {
|
|
if (item->StyledByItem()->size() == 0) {
|
|
IfcSchema::IfcMappedItem* mapped_item = item->as<IfcSchema::IfcMappedItem>();
|
|
if (is_identity_transform(mapped_item->MappingTarget())) {
|
|
IfcSchema::IfcRepresentationMap* map = mapped_item->MappingSource();
|
|
if (is_identity_transform(map->MappingOrigin())) {
|
|
representation_mapped_to = map->MappedRepresentation();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} catch (const IfcParse::IfcException& e) {
|
|
Logger::Error(e);
|
|
// @todo reset representation_mapped_to to zero?
|
|
}
|
|
return representation_mapped_to;
|
|
}
|
|
|
|
IfcSchema::IfcProduct::list::ptr IfcGeom::Kernel::products_represented_by(const IfcSchema::IfcRepresentation* representation) {
|
|
IfcSchema::IfcProduct::list::ptr products(new IfcSchema::IfcProduct::list);
|
|
|
|
IfcSchema::IfcProductRepresentation::list::ptr prodreps = representation->OfProductRepresentation();
|
|
|
|
for (IfcSchema::IfcProductRepresentation::list::it it = prodreps->begin(); it != prodreps->end(); ++it) {
|
|
// http://buildingsmart-tech.org/ifc/IFC2x3/TC1/html/ifcrepresentationresource/lexical/ifcproductrepresentation.htm
|
|
// IFC2x Edition 3 NOTE Users should not instantiate the entity IfcProductRepresentation from IFC2x Edition 3 onwards.
|
|
// It will be changed into an ABSTRACT supertype in future releases of IFC.
|
|
|
|
// IfcProductRepresentation also lacks the INVERSE relation to IfcProduct
|
|
// Let's find the IfcProducts that reference the IfcProductRepresentation anyway
|
|
products->push((*it)->data().getInverse((&IfcSchema::IfcProduct::Class()), -1)->as<IfcSchema::IfcProduct>());
|
|
}
|
|
|
|
IfcSchema::IfcRepresentationMap::list::ptr maps = representation->RepresentationMap();
|
|
|
|
if (products->size() && maps->size()) {
|
|
Logger::Warning("Representation used by IfcRepresentationMap and IfcProductDefinitionShape", representation);
|
|
}
|
|
|
|
if (prodreps->size() > 1) {
|
|
Logger::Warning("Multiple IfcProductDefinitionShapes for representation", representation);
|
|
}
|
|
|
|
if (maps->size() > 1) {
|
|
Logger::Warning("Multiple IfcRepresentationMaps for representation", representation);
|
|
}
|
|
|
|
if (maps->size() == 1) {
|
|
IfcSchema::IfcRepresentationMap* map = *maps->begin();
|
|
if (is_identity_transform(map->MappingOrigin())) {
|
|
IfcSchema::IfcMappedItem::list::ptr items = map->MapUsage();
|
|
for (IfcSchema::IfcMappedItem::list::it it = items->begin(); it != items->end(); ++it) {
|
|
IfcSchema::IfcMappedItem* item = *it;
|
|
if (item->StyledByItem()->size() != 0) continue;
|
|
|
|
if (!is_identity_transform(item->MappingTarget())) {
|
|
continue;
|
|
}
|
|
|
|
IfcSchema::IfcRepresentation::list::ptr reps = item->data().getInverse((&IfcSchema::IfcRepresentation::Class()), -1)->as<IfcSchema::IfcRepresentation>();
|
|
for (IfcSchema::IfcRepresentation::list::it jt = reps->begin(); jt != reps->end(); ++jt) {
|
|
IfcSchema::IfcRepresentation* rep = *jt;
|
|
if (rep->Items()->size() != 1) continue;
|
|
IfcSchema::IfcProductRepresentation::list::ptr prodreps_mapped = rep->OfProductRepresentation();
|
|
for (IfcSchema::IfcProductRepresentation::list::it kt = prodreps_mapped->begin(); kt != prodreps_mapped->end(); ++kt) {
|
|
IfcSchema::IfcProduct::list::ptr ps = (*kt)->data().getInverse((&IfcSchema::IfcProduct::Class()), -1)->as<IfcSchema::IfcProduct>();
|
|
products->push(ps);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return products;
|
|
}
|
|
|
|
IfcGeom::BRepElement* IfcGeom::Kernel::create_brep_for_processed_representation(
|
|
const IteratorSettings& /*settings*/, IfcSchema::IfcRepresentation* representation, IfcSchema::IfcProduct* product,
|
|
IfcGeom::BRepElement* brep)
|
|
{
|
|
int parent_id = -1;
|
|
try {
|
|
IfcUtil::IfcBaseEntity* parent_object = get_decomposing_entity(product);
|
|
if (parent_object && parent_object->as<IfcSchema::IfcObjectDefinition>()) {
|
|
parent_id = parent_object->data().id();
|
|
}
|
|
} catch (const std::exception& e) {
|
|
Logger::Error(e);
|
|
}
|
|
|
|
const std::string name = product->Name().get_value_or("");
|
|
const std::string guid = product->GlobalId();
|
|
|
|
gp_Trsf trsf;
|
|
try {
|
|
if (product->ObjectPlacement()) {
|
|
convert(product->ObjectPlacement(), trsf);
|
|
}
|
|
} catch (const std::exception& e) {
|
|
Logger::Error(e);
|
|
} catch (...) {
|
|
Logger::Error("Failed to construct placement");
|
|
}
|
|
|
|
std::string context_string = "";
|
|
if (representation->RepresentationIdentifier()) {
|
|
context_string = *representation->RepresentationIdentifier();
|
|
} else if (representation->ContextOfItems()->ContextType()) {
|
|
context_string = *representation->ContextOfItems()->ContextType();
|
|
}
|
|
|
|
const std::string product_type = product->declaration().name();
|
|
|
|
return new BRepElement(
|
|
product->data().id(),
|
|
parent_id,
|
|
name,
|
|
product_type,
|
|
guid,
|
|
context_string,
|
|
trsf,
|
|
brep->geometry_pointer(),
|
|
product
|
|
);
|
|
}
|
|
|
|
std::pair<std::string, double> IfcGeom::Kernel::initializeUnits(IfcSchema::IfcUnitAssignment* unit_assignment) {
|
|
// Set default units, set length to meters, angles to undefined
|
|
setValue(IfcGeom::Kernel::GV_LENGTH_UNIT, 1.0);
|
|
setValue(IfcGeom::Kernel::GV_PLANEANGLE_UNIT, -1.0);
|
|
|
|
std::string unit_name = "METER";
|
|
double unit_magnitude = 1.;
|
|
|
|
bool length_unit_encountered = false, angle_unit_encountered = false;
|
|
|
|
try {
|
|
auto units = unit_assignment->Units();
|
|
if (!units || !units->size()) {
|
|
Logger::Warning("No unit information found");
|
|
} else {
|
|
for (auto it = units->begin(); it != units->end(); ++it) {
|
|
IfcSchema::IfcUnit* base = *it;
|
|
if (base->as<IfcSchema::IfcNamedUnit>()) {
|
|
IfcSchema::IfcNamedUnit* named_unit = base->as<IfcSchema::IfcNamedUnit>();
|
|
if (named_unit->UnitType() == IfcSchema::IfcUnitEnum::IfcUnit_LENGTHUNIT ||
|
|
named_unit->UnitType() == IfcSchema::IfcUnitEnum::IfcUnit_PLANEANGLEUNIT)
|
|
{
|
|
std::string current_unit_name;
|
|
const double current_unit_magnitude = IfcParse::get_SI_equivalent<IfcSchema>(named_unit);
|
|
if (current_unit_magnitude != 0.) {
|
|
if (named_unit->as<IfcSchema::IfcConversionBasedUnit>()) {
|
|
IfcSchema::IfcConversionBasedUnit* u = named_unit->as<IfcSchema::IfcConversionBasedUnit>();
|
|
current_unit_name = u->Name();
|
|
} else if (named_unit->as<IfcSchema::IfcSIUnit>()) {
|
|
IfcSchema::IfcSIUnit* si_unit = named_unit->as<IfcSchema::IfcSIUnit>();
|
|
if (si_unit->Prefix()) {
|
|
current_unit_name = IfcSchema::IfcSIPrefix::ToString(*si_unit->Prefix()) + unit_name;
|
|
}
|
|
current_unit_name += IfcSchema::IfcSIUnitName::ToString(si_unit->Name());
|
|
}
|
|
if (named_unit->UnitType() == IfcSchema::IfcUnitEnum::IfcUnit_LENGTHUNIT) {
|
|
unit_name = current_unit_name;
|
|
unit_magnitude = current_unit_magnitude;
|
|
setValue(IfcGeom::Kernel::GV_LENGTH_UNIT, current_unit_magnitude);
|
|
length_unit_encountered = true;
|
|
} else {
|
|
setValue(IfcGeom::Kernel::GV_PLANEANGLE_UNIT, current_unit_magnitude);
|
|
angle_unit_encountered = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} catch (const IfcParse::IfcException& ex) {
|
|
std::stringstream ss;
|
|
ss << "Failed to determine unit information '" << ex.what() << "'";
|
|
Logger::Message(Logger::LOG_ERROR, ss.str());
|
|
}
|
|
|
|
if (!length_unit_encountered) {
|
|
Logger::Warning("No length unit encountered");
|
|
}
|
|
|
|
if (!angle_unit_encountered) {
|
|
Logger::Warning("No plane angle unit encountered");
|
|
}
|
|
|
|
return std::pair<std::string, double>(unit_name, unit_magnitude);
|
|
}
|
|
|
|
bool IfcGeom::Kernel::convert_layerset(const IfcSchema::IfcProduct* product, std::vector<Handle_Geom_Surface>& surfaces, std::vector<std::shared_ptr<const SurfaceStyle>>& styles, std::vector<double>& thicknesses) {
|
|
IfcSchema::IfcMaterialLayerSetUsage* usage = 0;
|
|
Handle_Geom_Surface reference_surface;
|
|
|
|
IfcSchema::IfcRelAssociates::list::ptr associations = product->HasAssociations();
|
|
for (IfcSchema::IfcRelAssociates::list::it it = associations->begin(); it != associations->end(); ++it) {
|
|
IfcSchema::IfcRelAssociatesMaterial* associates_material = (**it).as<IfcSchema::IfcRelAssociatesMaterial>();
|
|
if (associates_material) {
|
|
usage = associates_material->RelatingMaterial()->as<IfcSchema::IfcMaterialLayerSetUsage>();
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!usage) {
|
|
return false;
|
|
}
|
|
|
|
IfcSchema::IfcRepresentation* body_representation = find_representation(product, "Body");
|
|
|
|
if (!body_representation) {
|
|
Logger::Warning("No body representation for product", product);
|
|
return false;
|
|
}
|
|
|
|
if (product->declaration().is(IfcSchema::IfcWall::Class())) {
|
|
IfcSchema::IfcRepresentation* axis_representation = find_representation(product, "Axis");
|
|
|
|
if (!axis_representation) {
|
|
Logger::Message(Logger::LOG_WARNING, "No axis representation for:", product);
|
|
return false;
|
|
}
|
|
|
|
IfcRepresentationShapeItems axis_items;
|
|
{
|
|
Kernel temp = *this;
|
|
temp.setValue(GV_DIMENSIONALITY, -1.);
|
|
temp.convert_shapes(axis_representation, axis_items);
|
|
}
|
|
|
|
TopoDS_Shape axis_shape;
|
|
util::flatten_shape_list(axis_items, axis_shape, false, getValue(GV_PRECISION));
|
|
|
|
TopExp_Explorer exp(axis_shape, TopAbs_EDGE);
|
|
TopoDS_Edge axis_edge;
|
|
int edge_count = 0;
|
|
|
|
if (exp.More()) {
|
|
axis_edge = TopoDS::Edge(exp.Current());
|
|
++ edge_count;
|
|
} else {
|
|
Logger::Message(Logger::LOG_WARNING, "No edge found in axis representation:", product);
|
|
return false;
|
|
}
|
|
|
|
double u1, u2;
|
|
Handle_Geom_Curve axis_curve = BRep_Tool::Curve(axis_edge, u1, u2);
|
|
|
|
if (true) { /**< @todo Why always true? */
|
|
if (axis_curve->DynamicType() == STANDARD_TYPE(Geom_Line)) {
|
|
Handle_Geom_Line axis_line = Handle_Geom_Line::DownCast(axis_curve);
|
|
// @todo note that this creates an offset into the wrong order, the cross product arguments should be
|
|
// reversed. This causes some inversions later on, e.g. if(positive) { reverse(); }
|
|
reference_surface = new Geom_Plane(axis_line->Lin().Location(), axis_line->Lin().Direction() ^ gp::DZ());
|
|
} else if (axis_curve->DynamicType() == STANDARD_TYPE(Geom_Circle)) {
|
|
// @todo note that in this branch this inversion does not seem to take place.
|
|
Handle_Geom_Circle axis_line = Handle_Geom_Circle::DownCast(axis_curve);
|
|
reference_surface = new Geom_CylindricalSurface(axis_line->Position(), axis_line->Radius());
|
|
} else {
|
|
Logger::Message(Logger::LOG_ERROR, "Unsupported underlying curve of Axis representation:", product);
|
|
return false;
|
|
}
|
|
} else {
|
|
// Unfortunately this does not work when its intersection
|
|
// is calculated later on when the layerset is applied.
|
|
reference_surface = new Geom_SurfaceOfLinearExtrusion(axis_curve, gp::DZ());
|
|
}
|
|
|
|
} else {
|
|
IfcSchema::IfcExtrudedAreaSolid::list::ptr extrusions = IfcParse::traverse(body_representation)->as<IfcSchema::IfcExtrudedAreaSolid>();
|
|
|
|
if (extrusions->size() != 1) {
|
|
Logger::Message(Logger::LOG_WARNING, "No single extrusion found in body representation for:", product);
|
|
return false;
|
|
}
|
|
|
|
IfcSchema::IfcExtrudedAreaSolid* extrusion = *extrusions->begin();
|
|
|
|
gp_Trsf extrusion_position;
|
|
|
|
bool has_position = true;
|
|
#ifdef SCHEMA_IfcSweptAreaSolid_Position_IS_OPTIONAL
|
|
has_position = extrusion->Position() != nullptr;
|
|
#endif
|
|
if (has_position) {
|
|
if (!convert(extrusion->Position(), extrusion_position)) {
|
|
Logger::Message(Logger::LOG_ERROR, "Failed to convert placement for extrusion of:", product);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
gp_Dir extrusion_direction;
|
|
if (!convert(extrusion->ExtrudedDirection(), extrusion_direction)) {
|
|
Logger::Message(Logger::LOG_ERROR, "Failed to convert direction for extrusion of:", product);
|
|
return false;
|
|
}
|
|
|
|
reference_surface = new Geom_Plane(extrusion_position.TranslationPart(), extrusion_direction);
|
|
}
|
|
|
|
const IfcSchema::IfcMaterialLayerSet* layerset = usage->ForLayerSet();
|
|
const bool positive = usage->DirectionSense() == IfcSchema::IfcDirectionSenseEnum::IfcDirectionSense_POSITIVE;
|
|
double offset = usage->OffsetFromReferenceLine() * getValue(GV_LENGTH_UNIT);
|
|
|
|
IfcSchema::IfcMaterialLayer::list::ptr material_layers = layerset->MaterialLayers();
|
|
|
|
surfaces.push_back(new Geom_OffsetSurface(reference_surface, -offset));
|
|
|
|
for (IfcSchema::IfcMaterialLayer::list::it it = material_layers->begin(); it != material_layers->end(); ++it) {
|
|
styles.push_back(get_style((*it)->Material()));
|
|
|
|
double thickness = (*it)->LayerThickness() * getValue(GV_LENGTH_UNIT);
|
|
|
|
thicknesses.push_back(thickness);
|
|
|
|
if (!positive) {
|
|
thickness *= -1;
|
|
}
|
|
|
|
offset += thickness;
|
|
|
|
if (fabs(offset) < 1.e-7) {
|
|
surfaces.push_back(reference_surface);
|
|
} else {
|
|
surfaces.push_back(new Geom_OffsetSurface(reference_surface, -offset));
|
|
}
|
|
}
|
|
|
|
if (positive) {
|
|
std::reverse(thicknesses.begin(), thicknesses.end());
|
|
std::reverse(styles.begin(), styles.end());
|
|
std::reverse(surfaces.begin(), surfaces.end());
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool IfcGeom::Kernel::find_wall_end_points(const IfcSchema::IfcWall* wall, gp_Pnt& start, gp_Pnt& end) {
|
|
IfcSchema::IfcRepresentation* axis_representation = find_representation(wall, "Axis");
|
|
if (!axis_representation) {
|
|
return false;
|
|
}
|
|
|
|
IfcRepresentationShapeItems items;
|
|
{
|
|
Kernel temp = *this;
|
|
temp.setValue(GV_DIMENSIONALITY, -1.);
|
|
temp.convert_shapes(axis_representation, items);
|
|
}
|
|
|
|
TopoDS_Vertex a, b;
|
|
for (IfcRepresentationShapeItems::const_iterator it = items.begin(); it != items.end(); ++it) {
|
|
TopExp_Explorer exp(it->Shape(), TopAbs_VERTEX);
|
|
for (; exp.More(); exp.Next()) {
|
|
b = TopoDS::Vertex(exp.Current());
|
|
if (a.IsNull()) {
|
|
a = b;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (a.IsNull() || b.IsNull()) {
|
|
return false;
|
|
}
|
|
|
|
start = BRep_Tool::Pnt(a);
|
|
end = BRep_Tool::Pnt(b);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool IfcGeom::Kernel::fold_layers(const IfcSchema::IfcWall* wall, const IfcRepresentationShapeItems& items, const std::vector<Handle_Geom_Surface>& surfaces, const std::vector<double>& thicknesses, std::vector< std::vector<Handle_Geom_Surface> >& result) {
|
|
/*
|
|
* @todo isn't it easier to do this based on the non-folded surfaces of
|
|
* the connected walls and fold both pairs of layersets simultaneously?
|
|
*/
|
|
|
|
bool folds_made = false;
|
|
|
|
IfcSchema::IfcRelConnectsPathElements::list::ptr connections(new IfcSchema::IfcRelConnectsPathElements::list);
|
|
connections->push(wall->ConnectedFrom()->as<IfcSchema::IfcRelConnectsPathElements>());
|
|
connections->push( wall->ConnectedTo()->as<IfcSchema::IfcRelConnectsPathElements>());
|
|
|
|
typedef std::vector<Handle_Geom_Surface> surfaces_t;
|
|
typedef std::pair<Handle_Geom_Surface, Handle_Geom_Curve> curve_on_surface;
|
|
typedef std::vector<curve_on_surface> curves_on_surfaces_t;
|
|
typedef std::vector< std::pair< std::pair<IfcSchema::IfcConnectionTypeEnum::Value, IfcSchema::IfcConnectionTypeEnum::Value>, const IfcSchema::IfcProduct*> > endpoint_connections_t;
|
|
typedef std::vector< std::vector<Handle_Geom_Surface> > result_t;
|
|
endpoint_connections_t endpoint_connections;
|
|
|
|
// Find the semantic connections ot other wall elements when they are not connected 'AT_PATH' because
|
|
// in that latter case no folds need to be made.
|
|
for (IfcSchema::IfcRelConnectsPathElements::list::it it = connections->begin(); it != connections->end(); ++it) {
|
|
IfcSchema::IfcRelConnectsPathElements* connection = *it;
|
|
IfcSchema::IfcConnectionTypeEnum::Value own_type = connection->RelatedElement() == wall
|
|
? connection->RelatedConnectionType()
|
|
: connection->RelatingConnectionType();
|
|
IfcSchema::IfcConnectionTypeEnum::Value other_type = connection->RelatedElement() == wall
|
|
? connection->RelatingConnectionType()
|
|
: connection->RelatedConnectionType();
|
|
if (other_type != IfcSchema::IfcConnectionTypeEnum::IfcConnectionType_ATPATH &&
|
|
(own_type == IfcSchema::IfcConnectionTypeEnum::IfcConnectionType_ATEND ||
|
|
own_type == IfcSchema::IfcConnectionTypeEnum::IfcConnectionType_ATSTART))
|
|
{
|
|
IfcSchema::IfcElement* other = connection->RelatedElement() == wall
|
|
? connection->RelatingElement()
|
|
: connection->RelatedElement();
|
|
if (other->as<IfcSchema::IfcWall>()) {
|
|
endpoint_connections.push_back(std::make_pair(std::make_pair(own_type, other_type), other));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (endpoint_connections.size() == 0) {
|
|
return false;
|
|
}
|
|
|
|
// Count how many connections are made AT_START and AT_END respectively
|
|
int connection_type_count[2] = {0,0};
|
|
for (endpoint_connections_t::const_iterator it = endpoint_connections.begin(); it != endpoint_connections.end(); ++it) {
|
|
const int idx = it->first.first == IfcSchema::IfcConnectionTypeEnum::IfcConnectionType_ATSTART;
|
|
connection_type_count[idx] ++;
|
|
}
|
|
|
|
gp_Trsf local;
|
|
if (wall->ObjectPlacement()) {
|
|
if (!convert(wall->ObjectPlacement(), local)) {
|
|
return false;
|
|
}
|
|
}
|
|
local.Invert();
|
|
|
|
{
|
|
// Copy the unfolded surfaces
|
|
result.resize(surfaces.size());
|
|
std::vector< std::vector<Handle_Geom_Surface> >::iterator result_it = result.begin() + 1;
|
|
std::vector<Handle_Geom_Surface>::const_iterator input_it = surfaces.begin() + 1;
|
|
for(; input_it != surfaces.end() - 1; ++result_it, ++input_it) {
|
|
result_it->push_back(*input_it);
|
|
}
|
|
}
|
|
|
|
const double total_thickness = std::accumulate(thicknesses.begin(), thicknesses.end(), 0.);
|
|
|
|
gp_Pnt own_axis_start, own_axis_end;
|
|
find_wall_end_points(wall, own_axis_start, own_axis_end);
|
|
|
|
// Sometimes duplicate IfcRelConnectsPathElements exist. These are detected
|
|
// and the counts of connections are decremented accordingly.
|
|
for (int idx = 0; idx < 2; ++idx) {
|
|
if (connection_type_count[idx] <= 1) {
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
IfcSchema::IfcConnectionTypeEnum::Value connection_type = idx == 1
|
|
? IfcSchema::IfcConnectionTypeEnum::IfcConnectionType_ATSTART
|
|
: IfcSchema::IfcConnectionTypeEnum::IfcConnectionType_ATEND;
|
|
*/
|
|
|
|
std::set<const IfcSchema::IfcProduct*> others;
|
|
endpoint_connections_t::iterator it = endpoint_connections.begin();
|
|
while (it != endpoint_connections.end()) {
|
|
const IfcSchema::IfcProduct* other = it->second;
|
|
if (others.find(other) != others.end()) {
|
|
it = endpoint_connections.erase(it);
|
|
--connection_type_count[idx];
|
|
} else {
|
|
others.insert(other);
|
|
++it;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check whether the end points are of the wall are really ~1 LayerThickness away from each other
|
|
/*
|
|
for (endpoint_connections_t::const_iterator it = endpoint_connections.begin(); it != endpoint_connections.end(); ++it) {
|
|
IfcSchema::IfcConnectionTypeEnum::Value own_type = it->first.first;
|
|
IfcSchema::IfcConnectionTypeEnum::Value other_type = it->first.second;
|
|
|
|
gp_Pnt other_axis_start, other_axis_end;
|
|
find_wall_end_points(it->second->as<IfcSchema::IfcWall>(), other_axis_start, other_axis_end);
|
|
|
|
gp_Trsf other;
|
|
if (!convert(it->second->ObjectPlacement(), other)) {
|
|
continue;
|
|
}
|
|
|
|
other.Transforms(other_axis_start.ChangeCoord());
|
|
local.Transforms(other_axis_start.ChangeCoord());
|
|
other.Transforms(other_axis_end.ChangeCoord());
|
|
local.Transforms(other_axis_end.ChangeCoord());
|
|
|
|
const gp_Pnt& a = own_type == IfcSchema::IfcConnectionTypeEnum::IfcConnectionType_ATSTART
|
|
? own_axis_start
|
|
: own_axis_end;
|
|
|
|
const gp_Pnt& b = other_type == IfcSchema::IfcConnectionTypeEnum::IfcConnectionType_ATSTART
|
|
? other_axis_start
|
|
: other_axis_end;
|
|
|
|
const double d = a.Distance(b);
|
|
}
|
|
*/
|
|
|
|
const double length_required = endpoint_connections.size() * total_thickness;
|
|
// @todo this is not precisely the distance in case of curved walls. Also, it's safer
|
|
// to first reproject the body onto the axis to get the precise curve parametrization
|
|
// range. It's only a safeguard though, so can probably be approximated.
|
|
const double axis_length = own_axis_start.Distance(own_axis_end);
|
|
if (length_required > axis_length) {
|
|
Logger::Warning("The wall axis is not long enough to accomodate the fold points");
|
|
return false;
|
|
}
|
|
|
|
for (endpoint_connections_t::const_iterator it = endpoint_connections.begin(); it != endpoint_connections.end(); ++it) {
|
|
IfcSchema::IfcConnectionTypeEnum::Value connection_type = it->first.first;
|
|
|
|
// If more than one wall connects to this start/end -point assume layers do not need to be folded
|
|
const int idx = connection_type == IfcSchema::IfcConnectionTypeEnum::IfcConnectionType_ATSTART;
|
|
if (connection_type_count[idx] > 1) continue;
|
|
|
|
// Pick the corresponding point from the axis
|
|
const gp_Pnt& own_end_point = connection_type == IfcSchema::IfcConnectionTypeEnum::IfcConnectionType_ATEND
|
|
? own_axis_end
|
|
: own_axis_start;
|
|
const IfcSchema::IfcProduct* other_wall = it->second;
|
|
|
|
gp_Trsf other;
|
|
if (other_wall->ObjectPlacement()) {
|
|
if (!convert(other_wall->ObjectPlacement(), other)) {
|
|
Logger::Error("Failed to convert placement", other_wall);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
IfcSchema::IfcRepresentation* axis_representation = find_representation(other_wall, "Axis");
|
|
|
|
if (!axis_representation) {
|
|
Logger::Warning("Joined wall has no axis representation", other_wall);
|
|
continue;
|
|
}
|
|
|
|
IfcRepresentationShapeItems axis_items;
|
|
{
|
|
Kernel temp = *this;
|
|
temp.setValue(GV_DIMENSIONALITY, -1.);
|
|
temp.convert_shapes(axis_representation, axis_items);
|
|
}
|
|
|
|
TopoDS_Shape axis_shape;
|
|
util::flatten_shape_list(axis_items, axis_shape, false, getValue(GV_PRECISION));
|
|
|
|
// local and other are IfcLocalPlacements and therefore have a unit
|
|
// scale factor that can be applied by means of TopoDS_Shape::Move()
|
|
axis_shape.Move(other);
|
|
axis_shape.Move(local);
|
|
|
|
TopoDS_Shape body_shape;
|
|
util::flatten_shape_list(items, body_shape, false, getValue(GV_PRECISION));
|
|
|
|
// Create a single paremetric range over a single curve
|
|
// that represents the entire 1d domain of the other wall
|
|
// Sometimes there are multiple edges in the Axis shape
|
|
// but it is assumed these are colinear.
|
|
Handle_Geom_Curve other_axis_curve;
|
|
double axis_u1, axis_u2;
|
|
{
|
|
TopExp_Explorer exp(axis_shape, TopAbs_EDGE);
|
|
if (!exp.More()) {
|
|
return false;
|
|
}
|
|
|
|
TopoDS_Edge axis_edge = TopoDS::Edge(exp.Current());
|
|
other_axis_curve = BRep_Tool::Curve(axis_edge, axis_u1, axis_u2);
|
|
|
|
gp_Pnt other_a_1, other_a_2;
|
|
other_axis_curve->D0(axis_u1, other_a_1);
|
|
other_axis_curve->D0(axis_u2, other_a_2);
|
|
|
|
if (axis_u2 < axis_u1) {
|
|
std::swap(axis_u1, axis_u2);
|
|
}
|
|
exp.Next();
|
|
|
|
for (; exp.More(); exp.Next()) {
|
|
TopoDS_Edge axis_edge2 = TopoDS::Edge(exp.Current());
|
|
TopExp_Explorer exp2(axis_edge2, TopAbs_VERTEX);
|
|
for (; exp2.More(); exp2.Next()) {
|
|
gp_Pnt p = BRep_Tool::Pnt(TopoDS::Vertex(exp2.Current()));
|
|
gp_Pnt pp;
|
|
double u, d;
|
|
if (util::project(other_axis_curve, p, pp, u, d)) {
|
|
if (u < axis_u1) axis_u1 = u;
|
|
if (u > axis_u2) axis_u2 = u;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
double layer_offset = 0;
|
|
|
|
std::vector<double>::const_iterator thickness = thicknesses.begin();
|
|
result_t::iterator result_vector = result.begin() + 1;
|
|
|
|
// nb The first layer is never folded, because it corresponds
|
|
// to one of the longitudonal faces of the wall. Hence the +1
|
|
for (surfaces_t::const_iterator jt = surfaces.begin() + 1; jt != surfaces.end() - 1; ++jt, ++result_vector) {
|
|
layer_offset += *thickness++;
|
|
|
|
bool found_intersection = false, parallel = false;
|
|
boost::optional<gp_Pnt> point_outside_param_range;
|
|
|
|
const Handle_Geom_Surface& surface = *jt;
|
|
|
|
// Find the intersection point between the layerset surface
|
|
// and the other axis curve. If it's within the parametric
|
|
// range of the other wall it means the walls are connected
|
|
// with an angle.
|
|
GeomAPI_IntCS intersections(other_axis_curve, surface);
|
|
if (intersections.IsDone() && intersections.NbPoints() == 1) {
|
|
const gp_Pnt& p = intersections.Point(1);
|
|
|
|
double u, v, w;
|
|
intersections.Parameters(1, u, v, w);
|
|
|
|
gp_Pnt Pc, Ps;
|
|
gp_Vec Vc, Vs1, Vs2;
|
|
other_axis_curve->D1(w, Pc, Vc);
|
|
surface->D1(u, v, Ps, Vs1, Vs2);
|
|
Vs1.Cross(Vs2);
|
|
|
|
if (Vs1.IsNormal(Vc, 1.e-5)) {
|
|
Logger::Warning("Connected walls are parallel");
|
|
parallel = true;
|
|
} else if (w < axis_u1 || w > axis_u2) {
|
|
point_outside_param_range = p;
|
|
} else {
|
|
// Found an intersection. Layer end point is covered by connecting wall
|
|
found_intersection = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!parallel && !found_intersection && point_outside_param_range) {
|
|
|
|
/*
|
|
Is there a bug in Open Cascade related to the intersection
|
|
of offset surfaces constructed from linear extrusions?
|
|
Handle_Geom_Surface xy = new Geom_Plane(gp::Origin(), gp::DZ());
|
|
// Handle_Geom_Surface yz = new Geom_Plane(gp::Origin(), gp::DX());
|
|
// Handle_Geom_Surface yz2 = new Geom_OffsetSurface(yz, 1.);
|
|
Handle_Geom_Curve ln = new Geom_Line(gp::Origin(), gp::DX());
|
|
Handle_Geom_Surface yz = new Geom_SurfaceOfLinearExtrusion(ln, gp::DZ());
|
|
Handle_Geom_Surface yz2 = new Geom_OffsetSurface(yz, 1.);
|
|
intersect(xy, yz2);
|
|
*/
|
|
|
|
Handle_Geom_Surface plane = new Geom_Plane(*point_outside_param_range, gp::DZ());
|
|
|
|
// vertical edges at wall end point face.
|
|
curves_on_surfaces_t layer_ends;
|
|
util::intersect(surface, body_shape, layer_ends);
|
|
|
|
Handle_Geom_Curve layer_body_intersection;
|
|
Handle_Geom_Surface body_surface;
|
|
double mind = std::numeric_limits<double>::infinity();
|
|
for (curves_on_surfaces_t::const_iterator kt = layer_ends.begin(); kt != layer_ends.end(); ++kt) {
|
|
gp_Pnt p;
|
|
gp_Vec v;
|
|
double u, d;
|
|
kt->second->D1(0., p, v);
|
|
if (ALMOST_THE_SAME(0., v.Dot(gp::DZ()))) {
|
|
// Filter horizontal curves
|
|
continue;
|
|
}
|
|
// Find vertical wall end point edge closest to end point associated with semantic connection
|
|
if (util::project(kt->second, own_end_point, p, u, d)) {
|
|
// In addition to closest, there is a length threshold based on thickness.
|
|
// @todo ideally, first, the point closest to end-point is selected, and
|
|
// after that the parallel check is performed. But threshold probably
|
|
// functions good enough.
|
|
if (d < total_thickness * 3 && d < mind) {
|
|
GeomAdaptor_Curve GAC(other_axis_curve);
|
|
GeomAdaptor_Surface GAS(kt->first);
|
|
|
|
Extrema_ExtCS x(GAC, GAS, getValue(GV_PRECISION), getValue(GV_PRECISION));
|
|
|
|
if (x.IsParallel()) {
|
|
body_surface = kt->first;
|
|
layer_body_intersection = kt->second;
|
|
mind = d;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (body_surface.IsNull()) {
|
|
continue;
|
|
}
|
|
|
|
// Intersect vertical edge with ground plane for point.
|
|
GeomAPI_IntCS intersection2(layer_body_intersection, plane);
|
|
if (intersection2.IsDone() && intersection2.NbPoints() == 1) {
|
|
const gp_Pnt& layer_end_point = intersection2.Point(1);
|
|
|
|
// Intersect layerset surface with ground plane
|
|
GeomAPI_IntSS intersection3(surface, plane, 1.e-7);
|
|
if (intersection3.IsDone() && intersection3.NbLines() == 1) {
|
|
Handle_Geom_Curve layer_line = intersection3.Line(1);
|
|
GeomAdaptor_Curve layer_line_adaptor(layer_line);
|
|
ShapeAnalysis_Curve sac;
|
|
gp_Pnt layer_end_point_projected; double layer_end_point_param;
|
|
sac.Project(layer_line, layer_end_point, 1e-3, layer_end_point_projected, layer_end_point_param, false);
|
|
|
|
// Move point inwards by distance from other layerset
|
|
GCPnts_AbscissaPoint dst(layer_line_adaptor, layer_offset, layer_end_point_param);
|
|
if (dst.IsDone()) {
|
|
// Convert parameter to point
|
|
gp_Pnt layer_fold_point;
|
|
layer_line->D0(dst.Parameter(), layer_fold_point);
|
|
|
|
GeomAPI_IntSS intersection4(body_surface, plane, 1.e-7);
|
|
if (intersection4.IsDone() && intersection4.NbLines() == 1) {
|
|
Handle_Geom_Curve body_trim_curve = intersection4.Line(1);
|
|
ShapeAnalysis_Curve sac2;
|
|
gp_Pnt layer_fold_point_projected; double layer_fold_point_param;
|
|
sac2.Project(body_trim_curve, layer_fold_point, 1.e-7, layer_fold_point_projected, layer_fold_point_param, false);
|
|
Handle_Geom_Curve fold_curve = new Geom_OffsetCurve(body_trim_curve->Reversed(), layer_fold_point_projected.Distance(layer_fold_point), gp::DZ());
|
|
|
|
Handle_Geom_Surface fold_surface = new Geom_SurfaceOfLinearExtrusion(fold_curve, gp::DZ());
|
|
result_vector->push_back(fold_surface);
|
|
folds_made = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
return folds_made;
|
|
}
|
|
|
|
IfcSchema::IfcRepresentation* IfcGeom::Kernel::find_representation(const IfcSchema::IfcProduct* product, const std::string& identifier) {
|
|
if (!product->Representation()) return 0;
|
|
IfcSchema::IfcProductRepresentation* prod_rep = product->Representation();
|
|
IfcSchema::IfcRepresentation::list::ptr reps = prod_rep->Representations();
|
|
for (IfcSchema::IfcRepresentation::list::it it = reps->begin(); it != reps->end(); ++it) {
|
|
if ((**it).RepresentationIdentifier() && (*(**it).RepresentationIdentifier()) == identifier) {
|
|
return *it;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
const IfcSchema::IfcRepresentationItem* IfcGeom::Kernel::find_item_carrying_style(const IfcSchema::IfcRepresentationItem* item) {
|
|
if (item->StyledByItem()->size()) {
|
|
return item;
|
|
}
|
|
|
|
while (item->declaration().is(IfcSchema::IfcBooleanResult::Class())) {
|
|
// All instantiations of IfcBooleanOperand (type of FirstOperand) are subtypes of
|
|
// IfcGeometricRepresentationItem
|
|
item = item->as<IfcSchema::IfcBooleanResult>()->FirstOperand()->as<IfcSchema::IfcRepresentationItem>();
|
|
if (item && item->StyledByItem()->size()) {
|
|
return item;
|
|
}
|
|
}
|
|
|
|
// TODO: Ideally this would be done for other entities (such as IfcCsgSolid) as well.
|
|
// But neither are these very prevalent, nor does the current IfcOpenShell style
|
|
// mechanism enable to conveniently style subshapes, which would be necessary for
|
|
// distinctly styled union operands.
|
|
|
|
return item;
|
|
}
|
|
|
|
bool IfcGeom::Kernel::is_identity_transform(IfcUtil::IfcBaseInterface* l) {
|
|
IfcSchema::IfcAxis2Placement2D* ax2d;
|
|
IfcSchema::IfcAxis2Placement3D* ax3d;
|
|
|
|
IfcSchema::IfcCartesianTransformationOperator2D* op2d;
|
|
IfcSchema::IfcCartesianTransformationOperator3D* op3d;
|
|
IfcSchema::IfcCartesianTransformationOperator2DnonUniform* op2dnonu;
|
|
IfcSchema::IfcCartesianTransformationOperator3DnonUniform* op3dnonu;
|
|
|
|
if((op2dnonu = l->as<IfcSchema::IfcCartesianTransformationOperator2DnonUniform>()) != 0) {
|
|
gp_GTrsf2d gtrsf2d;
|
|
convert(op2dnonu, gtrsf2d);
|
|
return gtrsf2d.Form() == gp_Identity;
|
|
} else if ((op2d = l->as<IfcSchema::IfcCartesianTransformationOperator2D>()) != 0) {
|
|
gp_Trsf2d trsf2d;
|
|
convert(op2d, trsf2d);
|
|
return trsf2d.Form() == gp_Identity;
|
|
} else if((op3dnonu = l->as<IfcSchema::IfcCartesianTransformationOperator3DnonUniform>()) != 0) {
|
|
gp_GTrsf gtrsf;
|
|
convert(op3dnonu, gtrsf);
|
|
return gtrsf.Form() == gp_Identity;
|
|
} else if ((op3d = l->as<IfcSchema::IfcCartesianTransformationOperator3D>()) != 0) {
|
|
gp_Trsf trsf;
|
|
convert(op3d, trsf);
|
|
return trsf.Form() == gp_Identity;
|
|
} else if((ax2d = l->as<IfcSchema::IfcAxis2Placement2D>()) != 0) {
|
|
gp_Trsf2d trsf2d;
|
|
convert(ax2d, trsf2d);
|
|
return trsf2d.Form() == gp_Identity;
|
|
} else if ((ax3d = l->as<IfcSchema::IfcAxis2Placement3D>()) != 0) {
|
|
gp_Trsf trsf;
|
|
convert(ax3d, trsf);
|
|
return trsf.Form() == gp_Identity;
|
|
} else {
|
|
throw IfcParse::IfcException("Invalid valuation for IfcAxis2Placement / IfcCartesianTransformationOperator");
|
|
}
|
|
}
|
|
|
|
void IfcGeom::Kernel::set_conversion_placement_rel_to_type(const IfcParse::declaration* type) {
|
|
placement_rel_to_type_ = type;
|
|
}
|
|
|
|
void IfcGeom::Kernel::set_conversion_placement_rel_to_instance(const IfcUtil::IfcBaseEntity* instance) {
|
|
placement_rel_to_instance_ = instance;
|
|
}
|
|
|
|
|
|
namespace {
|
|
|
|
bool process_colour(IfcSchema::IfcColourRgb* colour, double* rgb) {
|
|
if (colour != 0) {
|
|
rgb[0] = colour->Red();
|
|
rgb[1] = colour->Green();
|
|
rgb[2] = colour->Blue();
|
|
}
|
|
return colour != 0;
|
|
}
|
|
|
|
bool process_colour(IfcSchema::IfcNormalisedRatioMeasure* factor, double* rgb) {
|
|
if (factor != 0) {
|
|
const double f = *factor;
|
|
rgb[0] = rgb[1] = rgb[2] = f;
|
|
}
|
|
return factor != 0;
|
|
}
|
|
|
|
bool process_colour(IfcSchema::IfcColourOrFactor* colour_or_factor, double* rgb) {
|
|
if (colour_or_factor == 0) {
|
|
return false;
|
|
} else if (colour_or_factor->declaration().is(IfcSchema::IfcColourRgb::Class())) {
|
|
return process_colour(static_cast<IfcSchema::IfcColourRgb*>(colour_or_factor), rgb);
|
|
} else if (colour_or_factor->declaration().is(IfcSchema::IfcNormalisedRatioMeasure::Class())) {
|
|
return process_colour(static_cast<IfcSchema::IfcNormalisedRatioMeasure*>(colour_or_factor), rgb);
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
#define Kernel MAKE_TYPE_NAME(Kernel)
|
|
|
|
std::shared_ptr<const IfcGeom::SurfaceStyle> IfcGeom::Kernel::internalize_surface_style(const std::pair<IfcUtil::IfcBaseClass*, IfcUtil::IfcBaseClass*>& shading_styles) {
|
|
if (shading_styles.second == 0) {
|
|
return 0;
|
|
}
|
|
int surface_style_id = shading_styles.first->data().id();
|
|
auto it = style_cache.find(surface_style_id);
|
|
if (it != style_cache.end()) {
|
|
return it->second;
|
|
}
|
|
|
|
|
|
IfcSchema::IfcSurfaceStyle* style = shading_styles.first->as<IfcSchema::IfcSurfaceStyle>();
|
|
IfcSchema::IfcSurfaceStyleShading* shading = shading_styles.second->as<IfcSchema::IfcSurfaceStyleShading>();
|
|
|
|
std::shared_ptr<SurfaceStyle> surface_style_ptr;
|
|
|
|
if (style->Name()) {
|
|
surface_style_ptr.reset(new SurfaceStyle(surface_style_id, *style->Name()));
|
|
} else {
|
|
surface_style_ptr.reset(new SurfaceStyle(surface_style_id));
|
|
}
|
|
|
|
std::shared_ptr<const SurfaceStyle> surface_style_ptr_const = std::const_pointer_cast<const SurfaceStyle>(surface_style_ptr);
|
|
SurfaceStyle& surface_style = *surface_style_ptr;
|
|
|
|
double rgb[3];
|
|
if (process_colour(shading->SurfaceColour(), rgb)) {
|
|
surface_style.Diffuse().reset(SurfaceStyle::ColorComponent(rgb[0], rgb[1], rgb[2]));
|
|
}
|
|
if (shading_styles.second->declaration().is(IfcSchema::IfcSurfaceStyleRendering::Class())) {
|
|
IfcSchema::IfcSurfaceStyleRendering* rendering_style = static_cast<IfcSchema::IfcSurfaceStyleRendering*>(shading_styles.second);
|
|
if (rendering_style->DiffuseColour() && process_colour(rendering_style->DiffuseColour(), rgb)) {
|
|
SurfaceStyle::ColorComponent diffuse = surface_style.Diffuse().get_value_or(SurfaceStyle::ColorComponent(1, 1, 1));
|
|
surface_style.Diffuse().reset(SurfaceStyle::ColorComponent(diffuse.R() * rgb[0], diffuse.G() * rgb[1], diffuse.B() * rgb[2]));
|
|
}
|
|
if (rendering_style->DiffuseTransmissionColour()) {
|
|
// Not supported
|
|
}
|
|
if (rendering_style->ReflectionColour()) {
|
|
// Not supported
|
|
}
|
|
if (rendering_style->SpecularColour() && process_colour(rendering_style->SpecularColour(), rgb)) {
|
|
surface_style.Specular().reset(SurfaceStyle::ColorComponent(rgb[0], rgb[1], rgb[2]));
|
|
}
|
|
if (rendering_style->SpecularHighlight()) {
|
|
IfcSchema::IfcSpecularHighlightSelect* highlight = rendering_style->SpecularHighlight();
|
|
if (highlight->declaration().is(IfcSchema::IfcSpecularRoughness::Class())) {
|
|
double roughness = *((IfcSchema::IfcSpecularRoughness*)highlight);
|
|
if (roughness >= 1e-9) {
|
|
surface_style.Specularity().reset(1.0 / roughness);
|
|
}
|
|
} else if (highlight->declaration().is(IfcSchema::IfcSpecularExponent::Class())) {
|
|
surface_style.Specularity().reset(*((IfcSchema::IfcSpecularExponent*)highlight));
|
|
}
|
|
}
|
|
if (rendering_style->TransmissionColour()) {
|
|
// Not supported
|
|
}
|
|
if (rendering_style->Transparency()) {
|
|
const double d = *rendering_style->Transparency();
|
|
surface_style.Transparency().reset(d);
|
|
}
|
|
}
|
|
return style_cache[surface_style_id] = surface_style_ptr_const;
|
|
}
|
|
|
|
std::shared_ptr<const IfcGeom::SurfaceStyle> IfcGeom::Kernel::get_style(const IfcSchema::IfcRepresentationItem* item) {
|
|
return internalize_surface_style(get_surface_style<IfcSchema::IfcSurfaceStyleShading>(item));
|
|
}
|
|
|
|
std::shared_ptr<const IfcGeom::SurfaceStyle> IfcGeom::Kernel::get_style(const IfcSchema::IfcMaterial* material) {
|
|
IfcSchema::IfcMaterialDefinitionRepresentation::list::ptr defs = material->HasRepresentation();
|
|
for (IfcSchema::IfcMaterialDefinitionRepresentation::list::it jt = defs->begin(); jt != defs->end(); ++jt) {
|
|
IfcSchema::IfcRepresentation::list::ptr reps = (*jt)->Representations();
|
|
IfcSchema::IfcStyledItem::list::ptr styles(new IfcSchema::IfcStyledItem::list);
|
|
for (IfcSchema::IfcRepresentation::list::it it = reps->begin(); it != reps->end(); ++it) {
|
|
styles->push((**it).Items()->as<IfcSchema::IfcStyledItem>());
|
|
}
|
|
for (IfcSchema::IfcStyledItem::list::it it = styles->begin(); it != styles->end(); ++it) {
|
|
const std::pair<IfcSchema::IfcSurfaceStyle*, IfcSchema::IfcSurfaceStyleShading*> ss = get_surface_style<IfcSchema::IfcSurfaceStyleShading>(*it);
|
|
if (ss.second) {
|
|
return internalize_surface_style(ss);
|
|
}
|
|
}
|
|
}
|
|
auto material_style = std::make_shared<IfcGeom::SurfaceStyle>(material->data().id(), material->Name());
|
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return style_cache[material->data().id()] = material_style;
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}
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