847a9aad5e
git-svn-id: https://free-cad.svn.sourceforge.net/svnroot/free-cad/trunk@5249 e8eeb9e2-ec13-0410-a4a9-efa5cf37419d
186 lines
7.9 KiB
C++
186 lines
7.9 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 <Bnd_Box.hxx>
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//# include <gp_Pln.hxx>
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# include <BRep_Builder.hxx>
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# include <BRepBndLib.hxx>
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# include <BRepPrimAPI_MakePrism.hxx>
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# include <BRepBuilderAPI_Copy.hxx>
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# include <BRepBuilderAPI_MakeFace.hxx>
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//# include <Geom_Plane.hxx>
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# include <Handle_Geom_Surface.hxx>
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# include <TopoDS.hxx>
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# include <TopoDS_Solid.hxx>
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# include <TopoDS_Face.hxx>
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# include <TopoDS_Wire.hxx>
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# include <TopExp_Explorer.hxx>
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# include <BRepAlgoAPI_Fuse.hxx>
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# include <Precision.hxx>
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#endif
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#include <Base/Placement.h>
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#include <Mod/Part/App/Part2DObject.h>
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#include "FeaturePad.h"
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using namespace PartDesign;
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const char* Pad::SideEnums[]= {"Positive","Negative",NULL};
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PROPERTY_SOURCE(PartDesign::Pad, PartDesign::Additive)
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Pad::Pad()
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{
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//ADD_PROPERTY(Side,((long)0));
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//Side.setEnums(SideEnums);
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ADD_PROPERTY(Length,(100.0));
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ADD_PROPERTY(Reversed,(0));
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ADD_PROPERTY(MirroredExtent,(0));
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}
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short Pad::mustExecute() const
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{
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if (Sketch.isTouched() ||
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Length.isTouched() ||
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MirroredExtent.isTouched() ||
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Reversed.isTouched())
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return 1;
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return 0;
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}
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App::DocumentObjectExecReturn *Pad::execute(void)
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{
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double L = Length.getValue();
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if (L < Precision::Confusion())
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return new App::DocumentObjectExecReturn("Length of pad too small");
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App::DocumentObject* link = Sketch.getValue();
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if (!link)
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return new App::DocumentObjectExecReturn("No sketch linked");
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if (!link->getTypeId().isDerivedFrom(Part::Part2DObject::getClassTypeId()))
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return new App::DocumentObjectExecReturn("Linked object is not a Sketch or Part2DObject");
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TopoDS_Shape shape = static_cast<Part::Part2DObject*>(link)->Shape.getShape()._Shape;
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if (shape.IsNull())
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return new App::DocumentObjectExecReturn("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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return new App::DocumentObjectExecReturn("Linked shape object is empty");
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TopExp_Explorer ex;
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std::vector<TopoDS_Wire> wires;
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for (ex.Init(shape, TopAbs_WIRE); ex.More(); ex.Next()) {
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wires.push_back(TopoDS::Wire(ex.Current()));
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}
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if (/*shape.ShapeType() != TopAbs_WIRE*/wires.empty()) // there can be several wires
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return new App::DocumentObjectExecReturn("Linked shape object is not a wire");
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// get the Sketch plane
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Base::Placement SketchPos = static_cast<Part::Part2DObject*>(link)->Placement.getValue();
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Base::Rotation SketchOrientation = SketchPos.getRotation();
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Base::Vector3d SketchOrientationVector(0,0,1);
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if (Reversed.getValue()) // negative direction
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SketchOrientationVector *= -1;
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SketchOrientation.multVec(SketchOrientationVector,SketchOrientationVector);
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// get the support of the Sketch if any
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App::DocumentObject* SupportLink = static_cast<Part::Part2DObject*>(link)->Support.getValue();
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Part::Feature *SupportObject = 0;
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if (SupportLink && SupportLink->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId()))
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SupportObject = static_cast<Part::Feature*>(SupportLink);
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TopoDS_Shape aFace = makeFace(wires);
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if (aFace.IsNull())
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return new App::DocumentObjectExecReturn("Creating a face from sketch failed");
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// lengthen the vector
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SketchOrientationVector *= L;
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try {
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// extrude the face to a solid
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gp_Vec vec(SketchOrientationVector.x,SketchOrientationVector.y,SketchOrientationVector.z);
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BRepPrimAPI_MakePrism PrismMaker(aFace,vec,0,1);
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if (PrismMaker.IsDone()) {
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// if the sketch has a support fuse them to get one result object (PAD!)
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if (SupportObject) {
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// At this point the prism can be a compound
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TopoDS_Shape result = PrismMaker.Shape();
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// set the additive shape property for later usage in e.g. pattern
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this->AddShape.setValue(result);
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const TopoDS_Shape& support = SupportObject->Shape.getValue();
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bool isSolid = false;
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if (!support.IsNull()) {
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TopExp_Explorer xp;
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xp.Init(support,TopAbs_SOLID);
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for (;xp.More(); xp.Next()) {
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isSolid = true;
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break;
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}
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}
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if (isSolid) {
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// Let's call algorithm computing a fuse operation:
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BRepAlgoAPI_Fuse mkFuse(support, result);
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// Let's check if the fusion has been successful
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if (!mkFuse.IsDone())
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return new App::DocumentObjectExecReturn("Fusion with support failed");
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result = mkFuse.Shape();
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// we have to get the solids (fuse create seldomly compounds)
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TopoDS_Shape solRes = this->getSolid(result);
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// lets check if the result is a solid
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if (solRes.IsNull())
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return new App::DocumentObjectExecReturn("Resulting shape is not a solid");
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this->Shape.setValue(solRes);
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}
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else
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return new App::DocumentObjectExecReturn("Support is not a solid");
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}
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else {
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TopoDS_Shape result = this->getSolid(PrismMaker.Shape());
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// set the additive shape property for later usage in e.g. pattern
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this->AddShape.setValue(result);
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this->Shape.setValue(result);
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}
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}
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else
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return new App::DocumentObjectExecReturn("Could not extrude the sketch!");
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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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