047a18ccb5
PVS: V668 There is no sense in testing pointer against null, as the memory was allocated using the 'new' operator. The exception will be generated in the case of memory allocation error
1129 lines
46 KiB
C++
1129 lines
46 KiB
C++
/***************************************************************************
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* Copyright (c) 2010 Juergen Riegel <FreeCAD@juergen-riegel.net> *
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* *
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* This file is part of the FreeCAD CAx development system. *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* *
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* This library 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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* GNU Library General Public License for more details. *
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* *
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* You should have received a copy of the GNU Library General Public *
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* License along with this library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 59 Temple Place, *
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* Suite 330, Boston, MA 02111-1307, USA *
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* *
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***************************************************************************/
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#include "PreCompiled.h"
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#ifndef _PreComp_
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# include <functional>
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# include <Bnd_Box.hxx>
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# include <BRep_Builder.hxx>
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# include <BRepBndLib.hxx>
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# include <BRepBuilderAPI_Copy.hxx>
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# include <BRepBuilderAPI_MakeFace.hxx>
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# include <BRepAdaptor_Surface.hxx>
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# include <BRepCheck_Analyzer.hxx>
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# include <BRep_Tool.hxx>
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# include <BRepExtrema_DistShapeShape.hxx>
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# include <BRepPrimAPI_MakePrism.hxx>
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# include <BRepProj_Projection.hxx>
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# include <Geom_Plane.hxx>
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# include <TopoDS.hxx>
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# include <TopoDS_Compound.hxx>
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# include <TopoDS_Face.hxx>
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# include <TopoDS_Wire.hxx>
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# include <TopoDS_Vertex.hxx>
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# include <TopExp_Explorer.hxx>
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# include <gp_Ax1.hxx>
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# include <gp_Pln.hxx>
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# include <ShapeFix_Face.hxx>
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# include <ShapeFix_Wire.hxx>
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# include <ShapeAnalysis.hxx>
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# include <TopTools_IndexedMapOfShape.hxx>
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# include <TopExp.hxx>
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# include <IntTools_FClass2d.hxx>
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# include <ShapeAnalysis_Surface.hxx>
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# include <ShapeFix_Shape.hxx>
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# include <Standard_Version.hxx>
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# include <BRepBuilderAPI_MakeEdge.hxx>
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# include <Extrema_ExtCC.hxx>
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# include <Extrema_POnCurv.hxx>
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# include <BRepAdaptor_CompCurve.hxx>
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# include <BRepAdaptor_Curve.hxx>
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# include <Standard_Version.hxx>
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# include <GProp_GProps.hxx>
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# include <BRepGProp.hxx>
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#endif
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#include <BRepExtrema_DistShapeShape.hxx>
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#include <TopExp.hxx>
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#include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
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#include <BRepLProp_SLProps.hxx>
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#include <BRepGProp_Face.hxx>
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#include <Base/Exception.h>
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#include <Base/Parameter.h>
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#include <Base/Reader.h>
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#include <Base/Console.h>
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#include <App/Application.h>
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#include <App/OriginFeature.h>
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#include <App/Document.h>
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#include <Mod/Part/App/FaceMakerCheese.h>
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#include "FeatureSketchBased.h"
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#include "DatumPlane.h"
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#include "DatumLine.h"
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using namespace PartDesign;
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PROPERTY_SOURCE(PartDesign::ProfileBased, PartDesign::FeatureAddSub)
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ProfileBased::ProfileBased()
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{
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ADD_PROPERTY_TYPE(Profile,(0),"SketchBased", App::Prop_None, "Reference to sketch");
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ADD_PROPERTY_TYPE(Midplane,(0),"SketchBased", App::Prop_None, "Extrude symmetric to sketch face");
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ADD_PROPERTY_TYPE(Reversed, (0),"SketchBased", App::Prop_None, "Reverse extrusion direction");
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ADD_PROPERTY_TYPE(UpToFace,(0),"SketchBased",(App::PropertyType)(App::Prop_None),"Face where feature will end");
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}
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short ProfileBased::mustExecute() const
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{
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if (Profile.isTouched() ||
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Midplane.isTouched() ||
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Reversed.isTouched() ||
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UpToFace.isTouched())
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return 1;
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return PartDesign::FeatureAddSub::mustExecute();
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}
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void ProfileBased::positionByPrevious(void)
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{
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Part::Feature* feat = getBaseObject(/* silent = */ true);
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if (feat) {
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this->Placement.setValue(feat->Placement.getValue());
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} else {
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//no base. Use either Sketch support's placement, or sketch's placement itself.
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Part::Part2DObject *sketch = getVerifiedSketch();
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App::DocumentObject* support = sketch->Support.getValue();
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if(support && support->isDerivedFrom(App::GeoFeature::getClassTypeId())) {
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this->Placement.setValue(static_cast<App::GeoFeature*>(support)->Placement.getValue());
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} else {
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this->Placement.setValue( sketch->Placement.getValue() );
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}
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}
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}
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void ProfileBased::transformPlacement(const Base::Placement &transform)
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{
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Part::Feature* feat = getBaseObject(/* silent = */ true);
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if (feat) {
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feat->transformPlacement(transform);
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} else {
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Part::Part2DObject *sketch = getVerifiedSketch();
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sketch->transformPlacement(transform);
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}
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positionByPrevious();
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}
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Part::Part2DObject* ProfileBased::getVerifiedSketch(bool silent) const {
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App::DocumentObject* result = Profile.getValue();
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const char* err = nullptr;
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if (!result) {
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err = "No profile linked at all";
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} else {
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if (!result->getTypeId().isDerivedFrom(Part::Part2DObject::getClassTypeId())) {
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err = "Linked object is not a Sketch or Part2DObject";
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result = nullptr;
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}
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}
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if (!silent && err) {
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throw Base::RuntimeError (err);
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}
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return static_cast<Part::Part2DObject*>(result);
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}
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Part::Feature* ProfileBased::getVerifiedObject(bool silent) const {
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App::DocumentObject* result = Profile.getValue();
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const char* err = nullptr;
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if (!result) {
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err = "No object linked";
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} else {
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if (!result->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId()))
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err = "Linked object is not a Sketch, Part2DObject or Feature";
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}
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if (!silent && err) {
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throw Base::RuntimeError (err);
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}
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return static_cast<Part::Feature*>(result);
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}
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TopoDS_Shape ProfileBased::getVerifiedFace(bool silent) const {
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App::DocumentObject* result = Profile.getValue();
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const char* err = nullptr;
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if (!result) {
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err = "No profile linked";
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} else {
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if (result->getTypeId().isDerivedFrom(Part::Part2DObject::getClassTypeId())) {
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auto wires = getProfileWires();
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return Part::FaceMakerCheese::makeFace(wires);
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}
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else if(result->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId())) {
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if(Profile.getSubValues().empty())
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err = "Linked object has no subshape specified";
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else {
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const Part::TopoShape& shape = Profile.getValue<Part::Feature*>()->Shape.getShape();
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TopoDS_Shape sub = shape.getSubShape(Profile.getSubValues()[0].c_str());
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if(sub.ShapeType() == TopAbs_FACE)
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return TopoDS::Face(sub);
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else if(sub.ShapeType() == TopAbs_WIRE) {
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auto wire = TopoDS::Wire(sub);
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if(!wire.Closed())
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err = "Linked wire is not closed";
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else {
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BRepBuilderAPI_MakeFace mk(wire);
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mk.Build();
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return TopoDS::Face(mk.Shape());
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}
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}
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else
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err = "Linked Subshape cannot be used";
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}
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}
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else
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err = "Linked object is neither Sketch, Part2DObject or Part::Feature";
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}
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if (!silent && err) {
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throw Base::RuntimeError (err);
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}
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return TopoDS_Face();
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}
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std::vector<TopoDS_Wire> ProfileBased::getProfileWires() const {
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std::vector<TopoDS_Wire> result;
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if(!Profile.getValue() || !Profile.getValue()->isDerivedFrom(Part::Feature::getClassTypeId()))
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throw Base::TypeError("No valid profile linked");
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TopoDS_Shape shape;
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if(Profile.getValue()->isDerivedFrom(Part::Part2DObject::getClassTypeId()))
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shape = Profile.getValue<Part::Part2DObject*>()->Shape.getValue();
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else {
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if(Profile.getSubValues().empty())
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throw Base::ValueError("No valid subelement linked in Part::Feature");
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shape = Profile.getValue<Part::Feature*>()->Shape.getShape().getSubShape(Profile.getSubValues().front().c_str());
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}
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if (shape.IsNull())
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throw Base::ValueError("Linked shape object is empty");
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// this is a workaround for an obscure OCC bug which leads to empty tessellations
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// for some faces. Making an explicit copy of the linked shape seems to fix it.
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// The error almost happens when re-computing the shape but sometimes also for the
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// first time
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BRepBuilderAPI_Copy copy(shape);
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shape = copy.Shape();
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if (shape.IsNull())
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throw Base::ValueError("Linked shape object is empty");
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TopExp_Explorer ex;
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for (ex.Init(shape, TopAbs_WIRE); ex.More(); ex.Next()) {
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result.push_back(TopoDS::Wire(ex.Current()));
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}
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if (result.empty()) // there can be several wires
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throw Base::ValueError("Linked shape object is not a wire");
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return result;
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}
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// Note: We cannot return a reference, because it will become Null.
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// Not clear where, because we check for IsNull() here, but as soon as it is passed out of
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// this method, it becomes null!
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const TopoDS_Face ProfileBased::getSupportFace() const {
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const Part::Part2DObject* sketch = getVerifiedSketch();
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if (sketch->MapMode.getValue() == Attacher::mmFlatFace && sketch->Support.getValue()) {
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const auto &Support = sketch->Support;
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App::DocumentObject* ref = Support.getValue();
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Part::Feature *part = static_cast<Part::Feature*>(ref);
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if (part && part->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId())) {
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const std::vector<std::string> &sub = Support.getSubValues();
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assert(sub.size()==1);
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if (sub.at(0) == "") {
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// This seems to happen when sketch is on a datum plane
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return TopoDS::Face(Feature::makeShapeFromPlane(sketch));
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}
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// get the selected sub shape (a Face)
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const Part::TopoShape &shape = part->Shape.getShape();
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if (shape.getShape().IsNull())
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throw Base::ValueError("Sketch support shape is empty!");
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TopoDS_Shape sh = shape.getSubShape(sub[0].c_str());
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if (sh.IsNull())
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throw Base::ValueError("Null shape in SketchBased::getSupportFace()!");
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const TopoDS_Face face = TopoDS::Face(sh);
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if (face.IsNull())
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throw Base::ValueError("Null face in SketchBased::getSupportFace()!");
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BRepAdaptor_Surface adapt(face);
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if (adapt.GetType() != GeomAbs_Plane)
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throw Base::TypeError("No planar face in SketchBased::getSupportFace()!");
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return face;
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}
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}
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return TopoDS::Face(Feature::makeShapeFromPlane(sketch));
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}
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int ProfileBased::getSketchAxisCount(void) const
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{
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Part::Part2DObject *sketch = static_cast<Part::Part2DObject*>(Profile.getValue());
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if (!sketch)
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return -1; // the link to the sketch is lost
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return sketch->getAxisCount();
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}
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Part::Feature *ProfileBased::getBaseObject(bool silent) const
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{
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// Test the base's class feature.
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Part::Feature *rv = Feature::getBaseObject(/* silent = */ true);
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if (rv) {
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return rv;
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}
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// getVerifiedObject() may throw it's own exception if fail
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Part::Feature* obj = getVerifiedObject(silent);
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if(!obj)
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return nullptr;
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if (!obj->isDerivedFrom(Part::Part2DObject::getClassTypeId()))
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return obj;
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//due to former test we know we have a 2d object
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Part::Part2DObject* sketch = getVerifiedSketch(silent);
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const char* err = nullptr;
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App::DocumentObject* spt = sketch->Support.getValue();
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if (spt) {
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if (spt->isDerivedFrom(Part::Feature::getClassTypeId())) {
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rv = static_cast<Part::Feature*>(spt);
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} else {
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err = "No base set, sketch support is not Part::Feature";
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}
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} else {
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err = "No base set, no sketch support either";
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}
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if (!silent && err) {
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throw Base::RuntimeError (err);
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}
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return rv;
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}
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void ProfileBased::onChanged(const App::Property* prop)
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{
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if (prop == &Profile) {
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// if attached to a sketch then mark it as read-only
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this->Placement.setStatus(App::Property::ReadOnly, Profile.getValue() != 0);
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}
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FeatureAddSub::onChanged(prop);
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}
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void ProfileBased::getUpToFaceFromLinkSub(TopoDS_Face& upToFace,
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const App::PropertyLinkSub& refFace)
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{
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App::DocumentObject* ref = refFace.getValue();
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std::vector<std::string> subStrings = refFace.getSubValues();
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if (ref == NULL)
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throw Base::ValueError("SketchBased: Up to face: No face selected");
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if (ref->getTypeId().isDerivedFrom(App::Plane::getClassTypeId())) {
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upToFace = TopoDS::Face(makeShapeFromPlane(ref));
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return;
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} else if (ref->getTypeId().isDerivedFrom(PartDesign::Plane::getClassTypeId())) {
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Part::Datum* datum = static_cast<Part::Datum*>(ref);
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upToFace = TopoDS::Face(datum->getShape());
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return;
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}
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if (!ref->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId()))
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throw Base::TypeError("SketchBased: Up to face: Must be face of a feature");
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Part::TopoShape baseShape = static_cast<Part::Feature*>(ref)->Shape.getShape();
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if (subStrings.empty() || subStrings[0].empty())
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throw Base::ValueError("SketchBased: Up to face: No face selected");
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// TODO: Check for multiple UpToFaces?
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upToFace = TopoDS::Face(baseShape.getSubShape(subStrings[0].c_str()));
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if (upToFace.IsNull())
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throw Base::ValueError("SketchBased: Up to face: Failed to extract face");
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}
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void ProfileBased::getUpToFace(TopoDS_Face& upToFace,
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const TopoDS_Shape& support,
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const TopoDS_Face& supportface,
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const TopoDS_Shape& sketchshape,
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const std::string& method,
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const gp_Dir& dir,
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const double offset)
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{
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if ((method == "UpToLast") || (method == "UpToFirst")) {
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// Check for valid support object
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if (support.IsNull())
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throw Base::ValueError("SketchBased: Up to face: No support in Sketch and no base feature!");
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std::vector<Part::cutFaces> cfaces = Part::findAllFacesCutBy(support, sketchshape, dir);
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if (cfaces.empty())
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throw Base::ValueError("SketchBased: Up to face: No faces found in this direction");
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// Find nearest/furthest face
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std::vector<Part::cutFaces>::const_iterator it, it_near, it_far;
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it_near = it_far = cfaces.begin();
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for (it = cfaces.begin(); it != cfaces.end(); it++)
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if (it->distsq > it_far->distsq)
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it_far = it;
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else if (it->distsq < it_near->distsq)
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it_near = it;
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upToFace = (method == "UpToLast" ? it_far->face : it_near->face);
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}
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// Check whether the face has limits or not. Unlimited faces have no wire
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// Note: Datum planes are always unlimited
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TopExp_Explorer Ex(upToFace,TopAbs_WIRE);
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if (Ex.More()) {
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// Remove the limits of the upToFace so that the extrusion works even if sketchshape is larger
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// than the upToFace
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bool remove_limits = false;
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for (Ex.Init(sketchshape,TopAbs_FACE); Ex.More(); Ex.Next()) {
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// Get outermost wire of sketch face
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TopoDS_Face sketchface = TopoDS::Face(Ex.Current());
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TopoDS_Wire outerWire = ShapeAnalysis::OuterWire(sketchface);
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if (!checkWireInsideFace(outerWire, upToFace, dir)) {
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remove_limits = true;
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break;
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}
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}
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// It must also be checked that all projected inner wires of the upToFace
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// lie outside the sketch shape. If this is not the case then the sketch
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// shape is not completely covered by the upToFace. See #0003141
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if (!remove_limits) {
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TopoDS_Wire outerWire = ShapeAnalysis::OuterWire(upToFace);
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for (Ex.Init(upToFace, TopAbs_WIRE); Ex.More(); Ex.Next()) {
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if (!outerWire.IsSame(Ex.Current())) {
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BRepProj_Projection proj(TopoDS::Wire(Ex.Current()), sketchshape, -dir);
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if (proj.More()) {
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remove_limits = true;
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break;
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}
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}
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}
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}
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if (remove_limits) {
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// Note: Using an unlimited face every time gives unnecessary failures for concave faces
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TopLoc_Location loc = upToFace.Location();
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BRepAdaptor_Surface adapt(upToFace, Standard_False);
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// use the placement of the adapter, not of the upToFace
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loc = TopLoc_Location(adapt.Trsf());
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BRepBuilderAPI_MakeFace mkFace(adapt.Surface().Surface()
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#if OCC_VERSION_HEX >= 0x060502
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, Precision::Confusion()
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#endif
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);
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if (!mkFace.IsDone())
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throw Base::ValueError("SketchBased: Up To Face: Failed to create unlimited face");
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upToFace = TopoDS::Face(mkFace.Shape());
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upToFace.Location(loc);
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}
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}
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// Check that the upToFace does not intersect the sketch face and
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// is not parallel to the extrusion direction (for simplicity, supportface is used instead of sketchshape)
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BRepAdaptor_Surface adapt1(TopoDS::Face(supportface));
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BRepAdaptor_Surface adapt2(TopoDS::Face(upToFace));
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if (adapt2.GetType() == GeomAbs_Plane) {
|
|
if (adapt1.Plane().Axis().IsNormal(adapt2.Plane().Axis(), Precision::Confusion()))
|
|
throw Base::ValueError("SketchBased: Up to face: Must not be parallel to extrusion direction!");
|
|
}
|
|
|
|
// We must measure from sketchshape, not supportface, here
|
|
BRepExtrema_DistShapeShape distSS(sketchshape, upToFace);
|
|
if (distSS.Value() < Precision::Confusion())
|
|
throw Base::ValueError("SketchBased: Up to face: Must not intersect sketch!");
|
|
|
|
// Move the face in the extrusion direction
|
|
// TODO: For non-planar faces, we could consider offsetting the surface
|
|
if (fabs(offset) > Precision::Confusion()) {
|
|
if (adapt2.GetType() == GeomAbs_Plane) {
|
|
gp_Trsf mov;
|
|
mov.SetTranslation(offset * gp_Vec(dir));
|
|
TopLoc_Location loc(mov);
|
|
upToFace.Move(loc);
|
|
} else {
|
|
throw Base::TypeError("SketchBased: Up to Face: Offset not supported yet for non-planar faces");
|
|
}
|
|
}
|
|
}
|
|
|
|
void ProfileBased::generatePrism(TopoDS_Shape& prism,
|
|
const TopoDS_Shape& sketchshape,
|
|
const std::string& method,
|
|
const gp_Dir& dir,
|
|
const double L,
|
|
const double L2,
|
|
const bool midplane,
|
|
const bool reversed)
|
|
{
|
|
if (method == "Length" || method == "TwoLengths" || method == "ThroughAll") {
|
|
double Ltotal = L;
|
|
double Loffset = 0.;
|
|
if (method == "ThroughAll")
|
|
// "ThroughAll" is modelled as a very long, but finite prism to avoid problems with pockets
|
|
// Note: 1E6 created problems once...
|
|
Ltotal = 1E4;
|
|
|
|
|
|
if (method == "TwoLengths") {
|
|
// midplane makes no sense here
|
|
Loffset = -L2;
|
|
Ltotal += L2;
|
|
} else if (midplane)
|
|
Loffset = -Ltotal/2;
|
|
|
|
TopoDS_Shape from = sketchshape;
|
|
if (method == "TwoLengths" || midplane) {
|
|
gp_Trsf mov;
|
|
mov.SetTranslation(Loffset * gp_Vec(dir));
|
|
TopLoc_Location loc(mov);
|
|
from = sketchshape.Moved(loc);
|
|
} else if (reversed)
|
|
Ltotal *= -1.0;
|
|
|
|
// Its better not to use BRepFeat_MakePrism here even if we have a support because the
|
|
// resulting shape creates problems with Pocket
|
|
BRepPrimAPI_MakePrism PrismMaker(from, Ltotal*gp_Vec(dir), 0,1); // finite prism
|
|
if (!PrismMaker.IsDone())
|
|
throw Base::RuntimeError("SketchBased: Length: Could not extrude the sketch!");
|
|
prism = PrismMaker.Shape();
|
|
} else {
|
|
throw Base::RuntimeError("SketchBased: Internal error: Unknown method for generatePrism()");
|
|
}
|
|
|
|
}
|
|
|
|
bool ProfileBased::checkWireInsideFace(const TopoDS_Wire& wire, const TopoDS_Face& face,
|
|
const gp_Dir& dir) {
|
|
// Project wire onto the face (face, not surface! So limits of face apply)
|
|
// FIXME: The results of BRepProj_Projection do not seem to be very stable. Sometimes they return no result
|
|
// even in the simplest projection case.
|
|
// FIXME: Checking for Closed() is wrong because this has nothing to do with the wire itself being closed
|
|
// But ShapeAnalysis_Wire::CheckClosed() doesn't give correct results either.
|
|
BRepProj_Projection proj(wire, face, dir);
|
|
return (proj.More() && proj.Current().Closed());
|
|
}
|
|
|
|
bool ProfileBased::checkLineCrossesFace(const gp_Lin &line, const TopoDS_Face &face)
|
|
{
|
|
#if 1
|
|
BRepBuilderAPI_MakeEdge mkEdge(line);
|
|
TopoDS_Wire wire = ShapeAnalysis::OuterWire(face);
|
|
BRepExtrema_DistShapeShape distss(wire, mkEdge.Shape(), Precision::Confusion());
|
|
if (distss.IsDone()) {
|
|
if (distss.Value() > Precision::Confusion())
|
|
return false;
|
|
// build up map vertex->edge
|
|
TopTools_IndexedDataMapOfShapeListOfShape vertex2Edge;
|
|
TopExp::MapShapesAndAncestors(wire, TopAbs_VERTEX, TopAbs_EDGE, vertex2Edge);
|
|
|
|
for (Standard_Integer i=1; i<= distss.NbSolution(); i++) {
|
|
if (distss.PointOnShape1(i).Distance(distss.PointOnShape2(i)) > Precision::Confusion())
|
|
continue;
|
|
BRepExtrema_SupportType type = distss.SupportTypeShape1(i);
|
|
if (type == BRepExtrema_IsOnEdge) {
|
|
TopoDS_Edge edge = TopoDS::Edge(distss.SupportOnShape1(i));
|
|
BRepAdaptor_Curve adapt(edge);
|
|
// create a plane (pnt,dir) that goes through the intersection point and is built of
|
|
// the vectors of the sketch normal and the rotation axis
|
|
const gp_Dir& normal = BRepAdaptor_Surface(face).Plane().Axis().Direction();
|
|
gp_Dir dir = line.Direction().Crossed(normal);
|
|
gp_Pnt pnt = distss.PointOnShape1(i);
|
|
|
|
Standard_Real t;
|
|
distss.ParOnEdgeS1(i, t);
|
|
gp_Pnt p_eps1 = adapt.Value(std::max<double>(adapt.FirstParameter(), t-10*Precision::Confusion()));
|
|
gp_Pnt p_eps2 = adapt.Value(std::min<double>(adapt.LastParameter(), t+10*Precision::Confusion()));
|
|
|
|
// now check if we get a change in the sign of the distances
|
|
Standard_Real dist_p_eps1_pnt = gp_Vec(p_eps1, pnt).Dot(gp_Vec(dir));
|
|
Standard_Real dist_p_eps2_pnt = gp_Vec(p_eps2, pnt).Dot(gp_Vec(dir));
|
|
// distance to the plane must be noticeable
|
|
if (fabs(dist_p_eps1_pnt) > 5*Precision::Confusion() &&
|
|
fabs(dist_p_eps2_pnt) > 5*Precision::Confusion()) {
|
|
if (dist_p_eps1_pnt * dist_p_eps2_pnt < 0)
|
|
return true;
|
|
}
|
|
}
|
|
else if (type == BRepExtrema_IsVertex) {
|
|
// for a vertex check the two adjacent edges if there is a change of sign
|
|
TopoDS_Vertex vertex = TopoDS::Vertex(distss.SupportOnShape1(i));
|
|
const TopTools_ListOfShape& edges = vertex2Edge.FindFromKey(vertex);
|
|
if (edges.Extent() == 2) {
|
|
// create a plane (pnt,dir) that goes through the intersection point and is built of
|
|
// the vectors of the sketch normal and the rotation axis
|
|
BRepAdaptor_Surface adapt(face);
|
|
const gp_Dir& normal = adapt.Plane().Axis().Direction();
|
|
gp_Dir dir = line.Direction().Crossed(normal);
|
|
gp_Pnt pnt = distss.PointOnShape1(i);
|
|
|
|
// from the first edge get a point next to the intersection point
|
|
const TopoDS_Edge& edge1 = TopoDS::Edge(edges.First());
|
|
BRepAdaptor_Curve adapt1(edge1);
|
|
Standard_Real dist1 = adapt1.Value(adapt1.FirstParameter()).SquareDistance(pnt);
|
|
Standard_Real dist2 = adapt1.Value(adapt1.LastParameter()).SquareDistance(pnt);
|
|
gp_Pnt p_eps1;
|
|
if (dist1 < dist2)
|
|
p_eps1 = adapt1.Value(adapt1.FirstParameter() + 2*Precision::Confusion());
|
|
else
|
|
p_eps1 = adapt1.Value(adapt1.LastParameter() - 2*Precision::Confusion());
|
|
|
|
// from the second edge get a point next to the intersection point
|
|
const TopoDS_Edge& edge2 = TopoDS::Edge(edges.Last());
|
|
BRepAdaptor_Curve adapt2(edge2);
|
|
Standard_Real dist3 = adapt2.Value(adapt2.FirstParameter()).SquareDistance(pnt);
|
|
Standard_Real dist4 = adapt2.Value(adapt2.LastParameter()).SquareDistance(pnt);
|
|
gp_Pnt p_eps2;
|
|
if (dist3 < dist4)
|
|
p_eps2 = adapt2.Value(adapt2.FirstParameter() + 2*Precision::Confusion());
|
|
else
|
|
p_eps2 = adapt2.Value(adapt2.LastParameter() - 2*Precision::Confusion());
|
|
|
|
// now check if we get a change in the sign of the distances
|
|
Standard_Real dist_p_eps1_pnt = gp_Vec(p_eps1, pnt).Dot(gp_Vec(dir));
|
|
Standard_Real dist_p_eps2_pnt = gp_Vec(p_eps2, pnt).Dot(gp_Vec(dir));
|
|
// distance to the plane must be noticeable
|
|
if (fabs(dist_p_eps1_pnt) > Precision::Confusion() &&
|
|
fabs(dist_p_eps2_pnt) > Precision::Confusion()) {
|
|
if (dist_p_eps1_pnt * dist_p_eps2_pnt < 0)
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
#else
|
|
// This is not as easy as it looks, because a distance of zero might be OK if
|
|
// the axis touches the sketchshape in in a linear edge or a vertex
|
|
// Note: This algorithm does not catch cases where the sketchshape touches the
|
|
// axis in two or more points
|
|
// Note: And it only works on closed outer wires
|
|
TopoDS_Wire outerWire = ShapeAnalysis::OuterWire(face);
|
|
BRepBuilderAPI_MakeEdge mkEdge(line);
|
|
if (!mkEdge.IsDone())
|
|
throw Base::RuntimeError("Revolve: Unexpected OCE failure");
|
|
BRepAdaptor_Curve axis(TopoDS::Edge(mkEdge.Shape()));
|
|
|
|
TopExp_Explorer ex;
|
|
int intersections = 0;
|
|
std::vector<gp_Pnt> intersectionpoints;
|
|
|
|
// Note: We need to look at every edge separately to catch coincident lines
|
|
for (ex.Init(outerWire, TopAbs_EDGE); ex.More(); ex.Next()) {
|
|
BRepAdaptor_Curve edge(TopoDS::Edge(ex.Current()));
|
|
Extrema_ExtCC intersector(axis, edge);
|
|
|
|
if (intersector.IsDone()) {
|
|
for (int i = 1; i <= intersector.NbExt(); i++) {
|
|
|
|
|
|
#if OCC_VERSION_HEX >= 0x060500
|
|
if (intersector.SquareDistance(i) < Precision::Confusion()) {
|
|
#else
|
|
if (intersector.Value(i) < Precision::Confusion()) {
|
|
#endif
|
|
if (intersector.IsParallel()) {
|
|
// A line that is coincident with the axis produces three intersections
|
|
// 1 with the line itself and 2 with the adjacent edges
|
|
intersections -= 2;
|
|
} else {
|
|
Extrema_POnCurv p1, p2;
|
|
intersector.Points(i, p1, p2);
|
|
intersectionpoints.push_back(p1.Value());
|
|
intersections++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Note: We might check this inside the loop but then we have to rely on TopExp_Explorer
|
|
// returning the wire's edges in adjacent order (because of the coincident line checking)
|
|
if (intersections > 1) {
|
|
// Check that we don't touch the sketchface just in two identical vertices
|
|
if ((intersectionpoints.size() == 2) &&
|
|
(intersectionpoints[0].IsEqual(intersectionpoints[1], Precision::Confusion())))
|
|
return false;
|
|
else
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
#endif
|
|
}
|
|
|
|
void ProfileBased::remapSupportShape(const TopoDS_Shape& newShape)
|
|
{
|
|
TopTools_IndexedMapOfShape faceMap;
|
|
TopExp::MapShapes(newShape, TopAbs_FACE, faceMap);
|
|
|
|
// here we must reset the placement otherwise the geometric matching doesn't work
|
|
Part::TopoShape shape = this->Shape.getValue();
|
|
TopoDS_Shape sh = shape.getShape();
|
|
sh.Location(TopLoc_Location());
|
|
shape.setShape(sh);
|
|
|
|
std::vector<App::DocumentObject*> refs = this->getInList();
|
|
for (std::vector<App::DocumentObject*>::iterator it = refs.begin(); it != refs.end(); ++it) {
|
|
std::vector<App::Property*> props;
|
|
(*it)->getPropertyList(props);
|
|
for (std::vector<App::Property*>::iterator jt = props.begin(); jt != props.end(); ++jt) {
|
|
if (!(*jt)->isDerivedFrom(App::PropertyLinkSub::getClassTypeId()))
|
|
continue;
|
|
App::PropertyLinkSub* link = static_cast<App::PropertyLinkSub*>(*jt);
|
|
if (link->getValue() != this)
|
|
continue;
|
|
std::vector<std::string> subValues = link->getSubValues();
|
|
std::vector<std::string> newSubValues;
|
|
|
|
for (std::vector<std::string>::iterator it = subValues.begin(); it != subValues.end(); ++it) {
|
|
std::string shapetype;
|
|
if (it->size() > 4 && it->substr(0,4) == "Face") {
|
|
shapetype = "Face";
|
|
}
|
|
else if (it->size() > 4 && it->substr(0,4) == "Edge") {
|
|
shapetype = "Edge";
|
|
}
|
|
else if (it->size() > 6 && it->substr(0,6) == "Vertex") {
|
|
shapetype = "Vertex";
|
|
}
|
|
else {
|
|
newSubValues.push_back(*it);
|
|
continue;
|
|
}
|
|
|
|
bool success = false;
|
|
TopoDS_Shape element;
|
|
try {
|
|
element = shape.getSubShape(it->c_str());
|
|
}
|
|
catch (Standard_Failure&) {
|
|
// This shape doesn't even exist, so no chance to do some tests
|
|
newSubValues.push_back(*it);
|
|
continue;
|
|
}
|
|
try {
|
|
// as very first test check if old face and new face are parallel planes
|
|
TopoDS_Shape newElement = Part::TopoShape(newShape).getSubShape(it->c_str());
|
|
if (isParallelPlane(element, newElement)) {
|
|
newSubValues.push_back(*it);
|
|
success = true;
|
|
}
|
|
}
|
|
catch (Standard_Failure&) {
|
|
}
|
|
// try an exact matching
|
|
if (!success) {
|
|
for (int i=1; i<faceMap.Extent(); i++) {
|
|
if (isQuasiEqual(element, faceMap.FindKey(i))) {
|
|
std::stringstream str;
|
|
str << shapetype << i;
|
|
newSubValues.push_back(str.str());
|
|
success = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
// if an exact matching fails then try to compare only the geometries
|
|
if (!success) {
|
|
for (int i=1; i<faceMap.Extent(); i++) {
|
|
if (isEqualGeometry(element, faceMap.FindKey(i))) {
|
|
std::stringstream str;
|
|
str << shapetype << i;
|
|
newSubValues.push_back(str.str());
|
|
success = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// the new shape couldn't be found so keep the old sub-name
|
|
if (!success)
|
|
newSubValues.push_back(*it);
|
|
}
|
|
|
|
link->setValue(this, newSubValues);
|
|
}
|
|
}
|
|
}
|
|
|
|
namespace PartDesign {
|
|
struct gp_Pnt_Less : public std::binary_function<const gp_Pnt&,
|
|
const gp_Pnt&, bool>
|
|
{
|
|
bool operator()(const gp_Pnt& p1,
|
|
const gp_Pnt& p2) const
|
|
{
|
|
if (fabs(p1.X() - p2.X()) > Precision::Confusion())
|
|
return p1.X() < p2.X();
|
|
if (fabs(p1.Y() - p2.Y()) > Precision::Confusion())
|
|
return p1.Y() < p2.Y();
|
|
if (fabs(p1.Z() - p2.Z()) > Precision::Confusion())
|
|
return p1.Z() < p2.Z();
|
|
return false; // points are considered to be equal
|
|
}
|
|
};
|
|
}
|
|
|
|
bool ProfileBased::isQuasiEqual(const TopoDS_Shape& s1, const TopoDS_Shape& s2) const
|
|
{
|
|
if (s1.ShapeType() != s2.ShapeType())
|
|
return false;
|
|
TopTools_IndexedMapOfShape map1, map2;
|
|
TopExp::MapShapes(s1, TopAbs_VERTEX, map1);
|
|
TopExp::MapShapes(s2, TopAbs_VERTEX, map2);
|
|
if (map1.Extent() != map2.Extent())
|
|
return false;
|
|
|
|
std::vector<gp_Pnt> p1;
|
|
for (int i=1; i<=map1.Extent(); i++) {
|
|
const TopoDS_Vertex& v = TopoDS::Vertex(map1.FindKey(i));
|
|
p1.push_back(BRep_Tool::Pnt(v));
|
|
}
|
|
std::vector<gp_Pnt> p2;
|
|
for (int i=1; i<=map2.Extent(); i++) {
|
|
const TopoDS_Vertex& v = TopoDS::Vertex(map2.FindKey(i));
|
|
p2.push_back(BRep_Tool::Pnt(v));
|
|
}
|
|
|
|
std::sort(p1.begin(), p1.end(), gp_Pnt_Less());
|
|
std::sort(p2.begin(), p2.end(), gp_Pnt_Less());
|
|
|
|
if (p1.size() != p2.size())
|
|
return false;
|
|
|
|
std::vector<gp_Pnt>::iterator it = p1.begin(), jt = p2.begin();
|
|
for (; it != p1.end(); ++it, ++jt) {
|
|
if (!(*it).IsEqual(*jt, Precision::Confusion()))
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool ProfileBased::isEqualGeometry(const TopoDS_Shape& s1, const TopoDS_Shape& s2) const
|
|
{
|
|
if (s1.ShapeType() == TopAbs_FACE && s2.ShapeType() == TopAbs_FACE) {
|
|
BRepAdaptor_Surface a1(TopoDS::Face(s1));
|
|
BRepAdaptor_Surface a2(TopoDS::Face(s2));
|
|
if (a1.GetType() == GeomAbs_Plane && a2.GetType() == GeomAbs_Plane) {
|
|
gp_Pln p1 = a1.Plane();
|
|
gp_Pln p2 = a2.Plane();
|
|
if (p1.Distance(p2.Location()) < Precision::Confusion()) {
|
|
const gp_Dir& d1 = p1.Axis().Direction();
|
|
const gp_Dir& d2 = p2.Axis().Direction();
|
|
if (d1.IsParallel(d2, Precision::Confusion()))
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
else if (s1.ShapeType() == TopAbs_EDGE && s2.ShapeType() == TopAbs_EDGE) {
|
|
}
|
|
else if (s1.ShapeType() == TopAbs_VERTEX && s2.ShapeType() == TopAbs_VERTEX) {
|
|
gp_Pnt p1 = BRep_Tool::Pnt(TopoDS::Vertex(s1));
|
|
gp_Pnt p2 = BRep_Tool::Pnt(TopoDS::Vertex(s2));
|
|
return p1.Distance(p2) < Precision::Confusion();
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool ProfileBased::isParallelPlane(const TopoDS_Shape& s1, const TopoDS_Shape& s2) const
|
|
{
|
|
if (s1.ShapeType() == TopAbs_FACE && s2.ShapeType() == TopAbs_FACE) {
|
|
BRepAdaptor_Surface a1(TopoDS::Face(s1));
|
|
BRepAdaptor_Surface a2(TopoDS::Face(s2));
|
|
if (a1.GetType() == GeomAbs_Plane && a2.GetType() == GeomAbs_Plane) {
|
|
gp_Pln p1 = a1.Plane();
|
|
gp_Pln p2 = a2.Plane();
|
|
const gp_Dir& d1 = p1.Axis().Direction();
|
|
const gp_Dir& d2 = p2.Axis().Direction();
|
|
if (d1.IsParallel(d2, Precision::Confusion()))
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
double ProfileBased::getReversedAngle(const Base::Vector3d &b, const Base::Vector3d &v)
|
|
{
|
|
try {
|
|
Part::Feature* obj = getVerifiedObject();
|
|
TopoDS_Shape sketchshape = getVerifiedFace();
|
|
|
|
// get centre of gravity of the sketch face
|
|
GProp_GProps props;
|
|
BRepGProp::SurfaceProperties(sketchshape, props);
|
|
gp_Pnt cog = props.CentreOfMass();
|
|
Base::Vector3d p_cog(cog.X(), cog.Y(), cog.Z());
|
|
// get direction to cog from its projection on the revolve axis
|
|
Base::Vector3d perp_dir = p_cog - p_cog.Perpendicular(b, v);
|
|
// get cross product of projection direction with revolve axis direction
|
|
Base::Vector3d cross = v % perp_dir;
|
|
// get sketch vector pointing away from support material
|
|
Base::Placement SketchPos = obj->Placement.getValue();
|
|
Base::Rotation SketchOrientation = SketchPos.getRotation();
|
|
Base::Vector3d SketchNormal(0,0,1);
|
|
SketchOrientation.multVec(SketchNormal,SketchNormal);
|
|
|
|
return SketchNormal * cross;
|
|
}
|
|
catch (...) {
|
|
return Reversed.getValue() ? 1 : 0;
|
|
}
|
|
}
|
|
|
|
void ProfileBased::getAxis(const App::DocumentObject *pcReferenceAxis, const std::vector<std::string> &subReferenceAxis,
|
|
Base::Vector3d& base, Base::Vector3d& dir)
|
|
{
|
|
dir = Base::Vector3d(0,0,0); // If unchanged signals that no valid axis was found
|
|
if (pcReferenceAxis == NULL)
|
|
return;
|
|
|
|
App::DocumentObject* profile = Profile.getValue();
|
|
gp_Pln sketchplane;
|
|
|
|
if (profile->getTypeId().isDerivedFrom(Part::Part2DObject::getClassTypeId())) {
|
|
Part::Part2DObject* sketch = getVerifiedSketch();
|
|
Base::Placement SketchPlm = sketch->Placement.getValue();
|
|
Base::Vector3d SketchVector = Base::Vector3d(0, 0, 1);
|
|
Base::Rotation SketchOrientation = SketchPlm.getRotation();
|
|
SketchOrientation.multVec(SketchVector, SketchVector);
|
|
Base::Vector3d SketchPos = SketchPlm.getPosition();
|
|
sketchplane = gp_Pln(gp_Pnt(SketchPos.x, SketchPos.y, SketchPos.z), gp_Dir(SketchVector.x, SketchVector.y, SketchVector.z));
|
|
|
|
if (pcReferenceAxis == profile) {
|
|
bool hasValidAxis = false;
|
|
Base::Axis axis;
|
|
if (subReferenceAxis[0] == "V_Axis") {
|
|
hasValidAxis = true;
|
|
axis = sketch->getAxis(Part::Part2DObject::V_Axis);
|
|
}
|
|
else if (subReferenceAxis[0] == "H_Axis") {
|
|
hasValidAxis = true;
|
|
axis = sketch->getAxis(Part::Part2DObject::H_Axis);
|
|
}
|
|
else if (subReferenceAxis[0].size() > 4 && subReferenceAxis[0].substr(0, 4) == "Axis") {
|
|
int AxId = std::atoi(subReferenceAxis[0].substr(4, 4000).c_str());
|
|
if (AxId >= 0 && AxId < sketch->getAxisCount()) {
|
|
hasValidAxis = true;
|
|
axis = sketch->getAxis(AxId);
|
|
}
|
|
}
|
|
if (hasValidAxis) {
|
|
axis *= SketchPlm;
|
|
base = axis.getBase();
|
|
dir = axis.getDirection();
|
|
return;
|
|
} //else - an edge of the sketch was selected as an axis
|
|
}
|
|
|
|
}
|
|
else if (profile->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId())) {
|
|
Base::Placement SketchPlm = getVerifiedObject()->Placement.getValue();
|
|
Base::Vector3d SketchVector = getProfileNormal();
|
|
Base::Vector3d SketchPos = SketchPlm.getPosition();
|
|
sketchplane = gp_Pln(gp_Pnt(SketchPos.x, SketchPos.y, SketchPos.z), gp_Dir(SketchVector.x, SketchVector.y, SketchVector.z));
|
|
}
|
|
|
|
// get reference axis
|
|
if (pcReferenceAxis->getTypeId().isDerivedFrom(PartDesign::Line::getClassTypeId())) {
|
|
const PartDesign::Line* line = static_cast<const PartDesign::Line*>(pcReferenceAxis);
|
|
base = line->getBasePoint();
|
|
dir = line->getDirection();
|
|
|
|
// Check that axis is perpendicular with sketch plane!
|
|
if (sketchplane.Axis().Direction().IsParallel(gp_Dir(dir.x, dir.y, dir.z), Precision::Angular()))
|
|
throw Base::ValueError("Rotation axis must not be perpendicular with the sketch plane");
|
|
return;
|
|
}
|
|
|
|
if (pcReferenceAxis->getTypeId().isDerivedFrom(App::Line::getClassTypeId())) {
|
|
const App::Line* line = static_cast<const App::Line*>(pcReferenceAxis);
|
|
base = Base::Vector3d(0,0,0);
|
|
line->Placement.getValue().multVec(Base::Vector3d (1,0,0), dir);
|
|
|
|
// Check that axis is perpendicular with sketch plane!
|
|
if (sketchplane.Axis().Direction().IsParallel(gp_Dir(dir.x, dir.y, dir.z), Precision::Angular()))
|
|
throw Base::ValueError("Rotation axis must not be perpendicular with the sketch plane");
|
|
return;
|
|
}
|
|
|
|
if (pcReferenceAxis->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId())) {
|
|
if (subReferenceAxis.empty())
|
|
throw Base::ValueError("No rotation axis reference specified");
|
|
const Part::Feature* refFeature = static_cast<const Part::Feature*>(pcReferenceAxis);
|
|
Part::TopoShape refShape = refFeature->Shape.getShape();
|
|
TopoDS_Shape ref = refShape.getSubShape(subReferenceAxis[0].c_str());
|
|
|
|
if (ref.ShapeType() == TopAbs_EDGE) {
|
|
TopoDS_Edge refEdge = TopoDS::Edge(ref);
|
|
if (refEdge.IsNull())
|
|
throw Base::ValueError("Failed to extract rotation edge");
|
|
BRepAdaptor_Curve adapt(refEdge);
|
|
if (adapt.GetType() != GeomAbs_Line)
|
|
throw Base::TypeError("Rotation edge must be a straight line");
|
|
|
|
gp_Pnt b = adapt.Line().Location();
|
|
base = Base::Vector3d(b.X(), b.Y(), b.Z());
|
|
gp_Dir d = adapt.Line().Direction();
|
|
dir = Base::Vector3d(d.X(), d.Y(), d.Z());
|
|
// Check that axis is co-planar with sketch plane!
|
|
// Check that axis is perpendicular with sketch plane!
|
|
if (sketchplane.Axis().Direction().IsParallel(d, Precision::Angular()))
|
|
throw Base::ValueError("Rotation axis must not be perpendicular with the sketch plane");
|
|
return;
|
|
} else {
|
|
throw Base::TypeError("Rotation reference must be an edge");
|
|
}
|
|
}
|
|
|
|
throw Base::TypeError("Rotation axis reference is invalid");
|
|
}
|
|
|
|
Base::Vector3d ProfileBased::getProfileNormal() const {
|
|
|
|
Base::Vector3d SketchVector(0,0,1);
|
|
auto obj = getVerifiedObject(true);
|
|
if(!obj)
|
|
return SketchVector;
|
|
|
|
// get the Sketch plane
|
|
if(obj->isDerivedFrom(Part::Part2DObject::getClassTypeId())) {
|
|
Base::Placement SketchPos = obj->Placement.getValue();
|
|
Base::Rotation SketchOrientation = SketchPos.getRotation();
|
|
SketchOrientation.multVec(SketchVector,SketchVector);
|
|
}
|
|
else {
|
|
TopoDS_Shape shape = getVerifiedFace(true);
|
|
if (shape == TopoDS_Shape())
|
|
return SketchVector;
|
|
|
|
if (shape.ShapeType() == TopAbs_FACE) {
|
|
BRepAdaptor_Surface adapt(TopoDS::Face(shape));
|
|
double u = adapt.FirstUParameter() + (adapt.LastUParameter() - adapt.FirstUParameter())/2.;
|
|
double v = adapt.FirstVParameter() + (adapt.LastVParameter() - adapt.FirstVParameter())/2.;
|
|
BRepLProp_SLProps prop(adapt,u,v,2,Precision::Confusion());
|
|
if(prop.IsNormalDefined()) {
|
|
gp_Pnt pnt; gp_Vec vec;
|
|
// handles the orientation state of the shape
|
|
BRepGProp_Face(TopoDS::Face(shape)).Normal(u,v,pnt,vec);
|
|
SketchVector = Base::Vector3d(vec.X(), vec.Y(), vec.Z());
|
|
}
|
|
}
|
|
}
|
|
|
|
return SketchVector;
|
|
}
|
|
|
|
|
|
void ProfileBased::Restore(Base::XMLReader& reader) {
|
|
|
|
reader.readElement("Properties");
|
|
int Cnt = reader.getAttributeAsInteger("Count");
|
|
|
|
for (int i=0 ;i<Cnt ;i++) {
|
|
reader.readElement("Property");
|
|
const char* PropName = reader.getAttribute("name");
|
|
const char* TypeName = reader.getAttribute("type");
|
|
App::Property* prop = getPropertyByName(PropName);
|
|
// NOTE: We must also check the type of the current property because a
|
|
// subclass of PropertyContainer might change the type of a property but
|
|
// not its name. In this case we would force to read-in a wrong property
|
|
// type and the behaviour would be undefined.
|
|
try {
|
|
//check if we load the old sketch property
|
|
if(!prop && (strcmp("Sketch", PropName) == 0) && (strcmp("App::PropertyLink", TypeName) == 0)) {
|
|
|
|
std::vector<std::string> vec;
|
|
// read my element
|
|
reader.readElement("Link");
|
|
// get the value of my attribute
|
|
std::string name = reader.getAttribute("value");
|
|
|
|
if (name != "") {
|
|
App::Document* document = getDocument();
|
|
DocumentObject* object = document ? document->getObject(name.c_str()) : 0;
|
|
Profile.setValue(object, vec);
|
|
}
|
|
else {
|
|
Profile.setValue(0, vec);
|
|
}
|
|
}
|
|
else if (prop && strcmp(prop->getTypeId().getName(), TypeName) == 0)
|
|
prop->Restore(reader);
|
|
}
|
|
catch (const Base::XMLParseException&) {
|
|
throw; // re-throw
|
|
}
|
|
catch (const Base::Exception &e) {
|
|
Base::Console().Error("%s\n", e.what());
|
|
}
|
|
catch (const std::exception &e) {
|
|
Base::Console().Error("%s\n", e.what());
|
|
}
|
|
catch (const char* e) {
|
|
Base::Console().Error("%s\n", e);
|
|
}
|
|
|
|
reader.readEndElement("Property");
|
|
}
|
|
reader.readEndElement("Properties");
|
|
}
|