Groove feature (code is 99% identical to Revolution feature)
This commit is contained in:
jrheinlaender
207
src/Mod/PartDesign/App/FeatureGroove.cpp
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207
src/Mod/PartDesign/App/FeatureGroove.cpp
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/***************************************************************************
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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 <BRep_Builder.hxx>
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# include <BRepBndLib.hxx>
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# include <BRepPrimAPI_MakeRevol.hxx>
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# include <BRepBuilderAPI_Copy.hxx>
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# include <BRepBuilderAPI_MakeFace.hxx>
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# include <TopoDS.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_Cut.hxx>
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#endif
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#include <Base/Axis.h>
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#include <Base/Placement.h>
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#include <Base/Tools.h>
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#include <Mod/Part/App/Part2DObject.h>
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#include "FeatureGroove.h"
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using namespace PartDesign;
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namespace PartDesign {
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PROPERTY_SOURCE(PartDesign::Groove, PartDesign::SketchBased)
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Groove::Groove()
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{
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ADD_PROPERTY(Base,(Base::Vector3f(0.0f,0.0f,0.0f)));
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ADD_PROPERTY(Axis,(Base::Vector3f(0.0f,1.0f,0.0f)));
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ADD_PROPERTY(Angle,(360.0));
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ADD_PROPERTY_TYPE(ReferenceAxis,(0),"Groove",(App::PropertyType)(App::Prop_None),"Reference axis of Groove");
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ADD_PROPERTY(Midplane,(0));
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ADD_PROPERTY(Reversed, (0));
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}
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short Groove::mustExecute() const
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{
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if (Placement.isTouched() ||
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Sketch.isTouched() ||
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ReferenceAxis.isTouched() ||
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Axis.isTouched() ||
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Base.isTouched() ||
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Angle.isTouched() ||
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Midplane.isTouched())
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return 1;
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return 0;
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}
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App::DocumentObjectExecReturn *Groove::execute(void)
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{
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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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Part::Part2DObject* pcSketch=static_cast<Part::Part2DObject*>(link);
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TopoDS_Shape shape = pcSketch->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 only happens when re-computing the shape.
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if (!this->Shape.getValue().IsNull()) {
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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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}
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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 (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 SketchPlm = pcSketch->Placement.getValue();
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// get reference axis
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App::DocumentObject *pcReferenceAxis = ReferenceAxis.getValue();
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const std::vector<std::string> &subReferenceAxis = ReferenceAxis.getSubValues();
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if (pcReferenceAxis && pcReferenceAxis == pcSketch) {
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bool hasValidAxis=false;
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Base::Axis axis;
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if (subReferenceAxis[0] == "V_Axis") {
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hasValidAxis = true;
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axis = pcSketch->getAxis(Part::Part2DObject::V_Axis);
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}
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else if (subReferenceAxis[0] == "H_Axis") {
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hasValidAxis = true;
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axis = pcSketch->getAxis(Part::Part2DObject::H_Axis);
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}
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else if (subReferenceAxis[0].size() > 4 && subReferenceAxis[0].substr(0,4) == "Axis") {
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int AxId = std::atoi(subReferenceAxis[0].substr(4,4000).c_str());
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if (AxId >= 0 && AxId < pcSketch->getAxisCount()) {
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hasValidAxis = true;
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axis = pcSketch->getAxis(AxId);
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}
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}
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if (hasValidAxis) {
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axis *= SketchPlm;
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Base::Vector3d base=axis.getBase();
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Base::Vector3d dir=axis.getDirection();
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Base.setValue(base.x,base.y,base.z);
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Axis.setValue(dir.x,dir.y,dir.z);
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}
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}
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// get revolve axis
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Base::Vector3f b = Base.getValue();
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gp_Pnt pnt(b.x,b.y,b.z);
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Base::Vector3f v = Axis.getValue();
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gp_Dir dir(v.x,v.y,v.z);
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// get the support of the Sketch if any
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App::DocumentObject* pcSupport = pcSketch->Support.getValue();
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Part::Feature *SupportObject = 0;
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if (pcSupport && pcSupport->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId()))
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SupportObject = static_cast<Part::Feature*>(pcSupport);
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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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// Rotate the face by half the angle to get Groove symmetric to sketch plane
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if (Midplane.getValue()) {
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gp_Trsf mov;
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mov.SetRotation(gp_Ax1(pnt, dir), Base::toRadians<double>(Angle.getValue()) * (-1.0) / 2.0);
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TopLoc_Location loc(mov);
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aFace.Move(loc);
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}
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this->positionBySketch();
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TopLoc_Location invObjLoc = this->getLocation().Inverted();
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pnt.Transform(invObjLoc.Transformation());
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dir.Transform(invObjLoc.Transformation());
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// Reverse angle if selected
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double angle = Base::toRadians<double>(Angle.getValue());
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if (Reversed.getValue() && !Midplane.getValue())
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angle *= (-1.0);
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try {
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// revolve the face to a solid
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BRepPrimAPI_MakeRevol RevolMaker(aFace.Moved(invObjLoc), gp_Ax1(pnt, dir), angle);
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if (RevolMaker.IsDone()) {
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TopoDS_Shape result = RevolMaker.Shape();
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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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const TopoDS_Shape& support = SupportObject->Shape.getValue();
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if (!support.IsNull() && support.ShapeType() == TopAbs_SOLID) {
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// Let's call algorithm computing a fuse operation:
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BRepAlgoAPI_Cut mkCut(support.Moved(invObjLoc), result);
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// Let's check if the fusion has been successful
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if (!mkCut.IsDone())
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throw Base::Exception("Cut out of support failed");
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result = mkCut.Shape();
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}
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}
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this->Shape.setValue(result);
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}
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else
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return new App::DocumentObjectExecReturn("Could not revolve 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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}
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