179 lines
7.4 KiB
C++
179 lines
7.4 KiB
C++
/***************************************************************************
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* Copyright (c) 2008 Werner Mayer <wmayer[at]users.sourceforge.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 <cmath>
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# include <gp_Trsf.hxx>
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# include <BRepOffsetAPI_MakeOffset.hxx>
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# include <BRepBuilderAPI_Copy.hxx>
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# include <BRepBuilderAPI_MakeFace.hxx>
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# include <BRepBuilderAPI_MakeWire.hxx>
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# include <BRepBuilderAPI_Transform.hxx>
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# include <BRepOffsetAPI_ThruSections.hxx>
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# include <BRepPrimAPI_MakePrism.hxx>
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# include <Precision.hxx>
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# include <ShapeAnalysis.hxx>
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# include <ShapeFix_Wire.hxx>
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# include <TopoDS.hxx>
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# include <TopExp_Explorer.hxx>
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#endif
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#include "FeatureExtrusion.h"
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#include <Base/Tools.h>
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#include <Base/Exception.h>
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using namespace Part;
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PROPERTY_SOURCE(Part::Extrusion, Part::Feature)
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Extrusion::Extrusion()
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{
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ADD_PROPERTY(Base,(0));
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ADD_PROPERTY(Dir,(Base::Vector3f(0.0f,0.0f,1.0f)));
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ADD_PROPERTY(Solid,(false));
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ADD_PROPERTY(TaperAngle,(0.0f));
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}
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short Extrusion::mustExecute() const
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{
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if (Base.isTouched() ||
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Dir.isTouched() ||
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Solid.isTouched() ||
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TaperAngle.isTouched())
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return 1;
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return 0;
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}
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App::DocumentObjectExecReturn *Extrusion::execute(void)
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{
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App::DocumentObject* link = Base.getValue();
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if (!link)
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return new App::DocumentObjectExecReturn("No object linked");
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if (!link->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId()))
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return new App::DocumentObjectExecReturn("Linked object is not a Part object");
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Part::Feature *base = static_cast<Part::Feature*>(Base.getValue());
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Base::Vector3f v = Dir.getValue();
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gp_Vec vec(v.x,v.y,v.z);
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float taperAngle = TaperAngle.getValue();
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bool makeSolid = Solid.getValue();
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try {
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if (std::fabs(taperAngle) >= Precision::Confusion()) {
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#if defined(__GNUC__) && defined (FC_OS_LINUX)
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Base::SignalException se;
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#endif
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double distance = std::tan(Base::toRadians(taperAngle)) * vec.Magnitude();
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TopoDS_Shape myShape = base->Shape.getValue();
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if (myShape.IsNull())
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Standard_Failure::Raise("Cannot extrude empty shape");
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// #0000910: Circles Extrude Only Surfaces, thus use BRepBuilderAPI_Copy
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myShape = BRepBuilderAPI_Copy(myShape).Shape();
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bool isWire = (myShape.ShapeType() == TopAbs_WIRE);
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bool isFace = (myShape.ShapeType() == TopAbs_FACE);
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if (!isWire && !isFace)
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return new App::DocumentObjectExecReturn("Only a wire or a face is supported");
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std::list<TopoDS_Wire> wire_list;
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BRepOffsetAPI_MakeOffset mkOffset;
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if (isWire) {
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#if 1 //OCC_HEX_VERSION < 0x060502
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// The input wire may have erorrs in its topology
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// and thus may cause a crash in the Perfrom() method
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// See also:
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// http://www.opencascade.org/org/forum/thread_17640/
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// http://www.opencascade.org/org/forum/thread_12012/
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ShapeFix_Wire aFix;
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aFix.Load(TopoDS::Wire(myShape));
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aFix.FixReorder();
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aFix.FixConnected();
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aFix.FixClosed();
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mkOffset.AddWire(aFix.Wire());
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wire_list.push_back(aFix.Wire());
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#else
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mkOffset.AddWire(TopoDS::Wire(shape));
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#endif
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}
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else if (isFace) {
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TopoDS_Wire outerWire = ShapeAnalysis::OuterWire(TopoDS::Face(myShape));
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wire_list.push_back(outerWire);
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mkOffset.AddWire(outerWire);
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}
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mkOffset.Perform(distance);
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gp_Trsf mat;
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mat.SetTranslation(vec);
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BRepBuilderAPI_Transform mkTransform(mkOffset.Shape(),mat);
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if (mkTransform.Shape().IsNull())
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Standard_Failure::Raise("Tapered shape is empty");
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TopAbs_ShapeEnum type = mkTransform.Shape().ShapeType();
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if (type == TopAbs_WIRE) {
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wire_list.push_back(TopoDS::Wire(mkTransform.Shape()));
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}
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else if (type == TopAbs_EDGE) {
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BRepBuilderAPI_MakeWire mkWire(TopoDS::Edge(mkTransform.Shape()));
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wire_list.push_back(mkWire.Wire());
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}
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else {
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Standard_Failure::Raise("Tapered shape type is not supported");
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}
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BRepOffsetAPI_ThruSections mkGenerator(makeSolid ? Standard_True : Standard_False, Standard_False);
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for (std::list<TopoDS_Wire>::const_iterator it = wire_list.begin(); it != wire_list.end(); ++it) {
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const TopoDS_Wire &wire = *it;
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mkGenerator.AddWire(wire);
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}
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mkGenerator.Build();
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this->Shape.setValue(mkGenerator.Shape());
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}
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else {
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// Now, let's get the TopoDS_Shape
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TopoDS_Shape myShape = base->Shape.getValue();
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if (myShape.IsNull())
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Standard_Failure::Raise("Cannot extrude empty shape");
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// #0000910: Circles Extrude Only Surfaces, thus use BRepBuilderAPI_Copy
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myShape = BRepBuilderAPI_Copy(myShape).Shape();
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if (makeSolid && myShape.ShapeType() == TopAbs_WIRE) {
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BRepBuilderAPI_MakeFace mkFace(TopoDS::Wire(myShape));
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myShape = mkFace.Face();
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}
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BRepPrimAPI_MakePrism mkPrism(myShape, vec);
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TopoDS_Shape swept = mkPrism.Shape();
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if (swept.IsNull())
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return new App::DocumentObjectExecReturn("Resulting shape is null");
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this->Shape.setValue(swept);
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}
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return App::DocumentObject::StdReturn;
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}
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catch (Standard_Failure) {
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Handle_Standard_Failure e = Standard_Failure::Caught();
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return new App::DocumentObjectExecReturn(e->GetMessageString());
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}
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}
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