160 lines
6.6 KiB
C++
160 lines
6.6 KiB
C++
/******************************************************************************
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* Copyright (c)2012 Jan Rheinlaender <jrheinlaender@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 <TopoDS.hxx>
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# include <TopoDS_Face.hxx>
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# include <gp_Lin.hxx>
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# include <gp_Ax2.hxx>
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# include <BRepAdaptor_Curve.hxx>
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#endif
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#include "FeaturePolarPattern.h"
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#include <Base/Tools.h>
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#include <Base/Axis.h>
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#include <Mod/Part/App/TopoShape.h>
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using namespace PartDesign;
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namespace PartDesign {
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PROPERTY_SOURCE(PartDesign::PolarPattern, PartDesign::Transformed)
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PolarPattern::PolarPattern()
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{
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ADD_PROPERTY_TYPE(Axis,(0),"PolarPattern",(App::PropertyType)(App::Prop_None),"Direction");
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ADD_PROPERTY(StdAxis,(""));
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ADD_PROPERTY(Reversed,(0));
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ADD_PROPERTY(Angle,(360.0));
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ADD_PROPERTY(Occurrences,(3));
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}
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short PolarPattern::mustExecute() const
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{
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if (Axis.isTouched() ||
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StdAxis.isTouched() ||
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Reversed.isTouched() ||
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Angle.isTouched() ||
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Occurrences.isTouched())
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return 1;
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return Transformed::mustExecute();
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}
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const std::list<gp_Trsf> PolarPattern::getTransformations(const std::vector<App::DocumentObject*>)
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{
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std::string stdAxis = StdAxis.getValue();
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float angle = Angle.getValue();
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if (angle < Precision::Confusion())
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throw Base::Exception("Pattern angle too small");
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int occurrences = Occurrences.getValue();
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if (occurrences < 2)
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throw Base::Exception("At least two occurrences required");
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bool reversed = Reversed.getValue();
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double offset;
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if (std::abs(angle - 360.0) < Precision::Confusion())
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offset = Base::toRadians<double>(angle) / occurrences; // Because e.g. two occurrences in 360 degrees need to be 180 degrees apart
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else
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offset = Base::toRadians<double>(angle) / (occurrences - 1);
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gp_Pnt axbase;
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gp_Dir axdir;
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if (!stdAxis.empty()) {
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axbase = gp_Pnt(0,0,0);
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if (stdAxis == "X") {
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axdir = gp_Dir(1,0,0);
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//ax = Base::Axis(Base::Vector3d(0,0,0), Base::Vector3d(1,0,0));
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} else if (stdAxis == "Y") {
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axdir = gp_Dir(0,1,0);
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//ax = Base::Axis(Base::Vector3d(0,0,0), Base::Vector3d(0,1,0));
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} else if(stdAxis == "Z") {
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axdir = gp_Dir(0,0,1);
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//ax = Base::Axis(Base::Vector3d(0,0,0), Base::Vector3d(0,0,1));
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} else {
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throw Base::Exception("Invalid axis (must be X, Y or Z)");
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}
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} else {
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App::DocumentObject* refObject = Axis.getValue();
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if (refObject == NULL)
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throw Base::Exception("No axis specified");
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if (!refObject->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId()))
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throw Base::Exception("Axis reference must be edge of a feature");
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std::vector<std::string> subStrings = Axis.getSubValues();
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if (subStrings.empty() || subStrings[0].empty())
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throw Base::Exception("No axis reference specified");
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Part::Feature* refFeature = static_cast<Part::Feature*>(refObject);
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Part::TopoShape refShape = refFeature->Shape.getShape();
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TopoDS_Shape ref = refShape.getSubShape(subStrings[0].c_str());
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if (ref.ShapeType() == TopAbs_EDGE) {
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TopoDS_Edge refEdge = TopoDS::Edge(ref);
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if (refEdge.IsNull())
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throw Base::Exception("Failed to extract axis edge");
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BRepAdaptor_Curve adapt(refEdge);
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if (adapt.GetType() != GeomAbs_Line)
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throw Base::Exception("Axis edge must be a straight line");
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axbase = adapt.Value(adapt.FirstParameter());
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axdir = adapt.Line().Direction();
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} else {
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throw Base::Exception("Axis reference must be an edge");
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}
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TopLoc_Location invObjLoc = this->getLocation().Inverted();
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axbase.Transform(invObjLoc.Transformation());
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axdir.Transform(invObjLoc.Transformation());
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}
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// get the support placement
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// TODO: Check for NULL pointer
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/*Part::Feature* supportFeature = static_cast<Part::Feature*>(originals.front());
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if (supportFeature == NULL)
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throw Base::Exception("Cannot work on invalid support shape");
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Base::Placement supportPlacement = supportFeature->Placement.getValue();
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ax *= supportPlacement;
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gp_Ax2 axis(gp_Pnt(ax.getBase().x, ax.getBase().y, ax.getBase().z), gp_Dir(ax.getDirection().x, ax.getDirection().y, ax.getDirection().z));*/
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gp_Ax2 axis(axbase, axdir);
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if (reversed)
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axis.SetDirection(axis.Direction().Reversed());
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// Note: The original feature is NOT included in the list of transformations! Therefore
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// we start with occurrence number 1, not number 0
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std::list<gp_Trsf> transformations;
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gp_Trsf trans;
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transformations.push_back(trans); // identity transformation
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for (int i = 1; i < occurrences; i++) {
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trans.SetRotation(axis.Axis(), i * offset);
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transformations.push_back(trans);
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}
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return transformations;
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}
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}
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