b300c80b90
* Base: Use explicit pointer syntax for freecad_cast This aligns our custom cast with other casts * All: Use explicit pointer syntax for freecad_cast
99 lines
3.7 KiB
C++
99 lines
3.7 KiB
C++
/******************************************************************************
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* Copyright (c) 2012 Jan Rheinländer <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 <BRepGProp.hxx>
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#include <GProp_GProps.hxx>
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#include <Precision.hxx>
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#endif
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#include "FeatureScaled.h"
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#include "FeatureAddSub.h"
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using namespace PartDesign;
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namespace PartDesign
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{
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PROPERTY_SOURCE(PartDesign::Scaled, PartDesign::Transformed)
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Scaled::Scaled()
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{
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ADD_PROPERTY(Factor, (2.0));
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ADD_PROPERTY(Occurrences, (2));
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}
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short Scaled::mustExecute() const
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{
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if (Factor.isTouched() || Occurrences.isTouched()) {
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return 1;
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}
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return Transformed::mustExecute();
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}
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const std::list<gp_Trsf>
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Scaled::getTransformations(const std::vector<App::DocumentObject*> originals)
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{
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double const factor = Factor.getValue();
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if (factor < Precision::Confusion()) {
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throw Base::ValueError("Scaling factor too small");
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}
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int const occurrences = Occurrences.getValue();
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if (occurrences < 2) {
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throw Base::ValueError("At least two occurrences required");
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}
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double f = (factor - 1.0) / double(occurrences - 1);
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gp_Pnt cog;
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if (!originals.empty()) {
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// Find centre of gravity of first original
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// FIXME: This method will NOT give the expected result for more than one original!
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if (auto feature = freecad_cast<PartDesign::FeatureAddSub*>(originals.front())) {
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TopoDS_Shape original = feature->AddSubShape.getShape().getShape();
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GProp_GProps props;
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BRepGProp::VolumeProperties(original, props);
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cog = props.CentreOfMass();
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}
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}
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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.SetScale(cog, 1.0 + double(i) * f);
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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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} // namespace PartDesign
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