c85368bfc0
I have converted Nate's b-spline generation to use my superclass FeatureBSurf and added it to the GUI. Other half-ready operations as filling and cut are commented out. Missing: - the fill type must be queried from the user. The data panel lets it modify, but it is not user-friendly. - b-spline surface is generated, but it covers only a fraction of the supporting curves. It may lie on OCC error.
116 lines
4.5 KiB
C++
116 lines
4.5 KiB
C++
/***************************************************************************
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* Copyright (c) 2014-2015 Nathan Miller <Nathan.A.Mill[at]gmail.com> *
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* Balázs Bámer *
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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 <ShapeFix_Wire.hxx>
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#include <ShapeExtend_WireData.hxx>
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#include <BRepBuilderAPI_MakeWire.hxx>
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#include <TopoDS.hxx>
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#include <TopoDS_Wire.hxx>
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#include <BRepBuilderAPI_Copy.hxx>
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#include <Base/Tools.h>
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#include <Base/Exception.h>
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#endif
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#include "FeatureBSurf.h"
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using namespace Surface;
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//Check if any components of the surface have been modified
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short BSurf::mustExecute() const
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{
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if (aBList.isTouched() ||
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filltype.isTouched())
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{
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return 1;
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}
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return 0;
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}
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GeomFill_FillingStyle BSurf::getFillingStyle()
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{
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//Identify filling style
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int ftype = filltype.getValue();
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if(ftype==StretchStyle) {return GeomFill_StretchStyle;}
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else if(ftype==CoonsStyle) {return GeomFill_CoonsStyle;}
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else if(ftype==CurvedStyle) {return GeomFill_CurvedStyle;}
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else {Standard_Failure::Raise("Filling style must be 1 (Stretch), 2 (Coons), or 3 (Curved).");}
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}
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void BSurf::getWire(TopoDS_Wire& aWire)
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{
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Handle(ShapeFix_Wire) aShFW = new ShapeFix_Wire;
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Handle(ShapeExtend_WireData) aWD = new ShapeExtend_WireData;
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if(aBList.getSize()>4 || aBList.getSize()<2){Standard_Failure::Raise("Only 2-4 curves are allowed");return;}
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for(int i=0; i<aBList.getSize(); i++){
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Part::TopoShape ts; //Curve TopoShape
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TopoDS_Shape sub; //Curve TopoDS_Shape
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TopoDS_Edge etmp; //Curve TopoDS_Edge
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//Get Edge
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App::PropertyLinkSubList::SubSet set = aBList[i];
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if(set.obj->getTypeId().isDerivedFrom(Part::Feature::getClassTypeId())) {
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ts = static_cast<Part::Feature*>(set.obj)->Shape.getShape();
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//we want only the subshape which is linked
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sub = ts.getSubShape(set.sub);
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// make a copy of the shape and the underlying geometry to avoid to affect the input shapes
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BRepBuilderAPI_Copy copy(sub);
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sub = copy.Shape();
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if(sub.ShapeType() == TopAbs_EDGE) { //Check Shape type and assign edge
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etmp = TopoDS::Edge(sub);
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}
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else {
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Standard_Failure::Raise("Curves must be type TopoDS_Edge");
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return; //Raise exception
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}
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aWD->Add(etmp);
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}
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else{Standard_Failure::Raise("Curve not from Part::Feature");return;}
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}
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//Reorder the curves and fix the wire if required
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aShFW->Load(aWD); //Load in the wire
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aShFW->FixReorder(); //Fix the order of the edges if required
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aShFW->ClosedWireMode() = Standard_True; //Enables closed wire mode
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aShFW->FixConnected(); //Fix connection between wires
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aShFW->FixSelfIntersection(); //Fix Self Intersection
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aShFW->Perform(); //Perform the fixes
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aWire = aShFW->Wire(); //Healed Wire
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if(aWire.IsNull()){Standard_Failure::Raise("Wire unable to be constructed");return;}
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}
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