fix dependent copy references

to make them work with sketches an additional Part2DObject reference needed to be created

src/Mod/PartDesign/App/ShapeBinder.cpp

@@ -0,0 +1,144 @@
+/***************************************************************************
+ *   Copyright (c) 2015 Stefan Tröger <stefantroeger@gmx.net>              *
+ *                                                                         *
+ *   This file is part of the FreeCAD CAx development system.              *
+ *                                                                         *
+ *   This library is free software; you can redistribute it and/or         *
+ *   modify it under the terms of the GNU Library General Public           *
+ *   License as published by the Free Software Foundation; either          *
+ *   version 2 of the License, or (at your option) any later version.      *
+ *                                                                         *
+ *   This library  is distributed in the hope that it will be useful,      *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU Library General Public License for more details.                  *
+ *                                                                         *
+ *   You should have received a copy of the GNU Library General Public     *
+ *   License along with this library; see the file COPYING.LIB. If not,    *
+ *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
+ *   Suite 330, Boston, MA  02111-1307, USA                                *
+ *                                                                         *
+ ***************************************************************************/
+
+
+#include "PreCompiled.h"
+#ifndef _PreComp_
+# include <cfloat>
+#include <BRepBuilderAPI_MakeFace.hxx>
+#endif
+
+#include "ShapeBinder.h"
+#include <Mod/Part/App/TopoShape.h>
+
+#ifndef M_PI
+#define M_PI       3.14159265358979323846
+#endif
+
+using namespace PartDesign;
+
+// ============================================================================
+
+PROPERTY_SOURCE(PartDesign::ShapeBinder, Part::Feature)
+
+ShapeBinder::ShapeBinder()
+{
+    ADD_PROPERTY_TYPE(Support, (0,0), "",(App::PropertyType)(App::Prop_None),"Support of the geometry");
+}
+
+ShapeBinder::~ShapeBinder()
+{
+}
+
+// TODO Move this to mustExecute/execute (2015-09-11, Fat-Zer)
+void ShapeBinder::onChanged(const App::Property *prop)
+{
+
+    if(! this->isRestoring()){
+
+        if(prop == &Support) {
+
+            auto objs = Support.getValues();
+            auto subs = Support.getSubValues();
+
+            Shape.setValue(buildShapeFromReferences(objs, subs)._Shape);
+        }
+
+    }
+    Part::Feature::onChanged(prop);
+}
+
+TopoShape ShapeBinder::buildShapeFromReferences(std::vector< App::DocumentObject* > objs, std::vector< std::string > subs) {
+
+    if(objs.empty()) {
+        //kee the shape as it is, maybe we are just used as a copy
+        return TopoShape();
+    }
+
+    //we only allow part feature, so get the first one we find
+    Part::Feature* obj = nullptr;
+    int index = 0;
+    while(!objs[index]->isDerivedFrom(Part::Feature::getClassTypeId()) && index < objs.size())
+        index++;
+
+    //do we have any part feature?
+    if(index >= objs.size())
+        return TopoShape();
+
+    obj = static_cast<Part::Feature*>(objs[index]);
+
+    //if we have no subshpape we use the whole shape
+    if(subs[index].empty()) {
+        return obj->Shape.getShape();
+    }
+
+    //if we use multiple subshapes we build a shape from them by fusing them together
+    index = 0;
+    TopoShape base;
+    std::vector<TopoDS_Shape> operators;
+    for(std::string sub : subs) {
+
+        //we only allow subshapes from a single Part::Feature
+        if(objs[index] != obj)
+            continue;
+
+        //in this mode the full shape is allowed, as we already started the subshape
+        //prcessing
+        if(sub.empty())
+            continue;
+
+        if(base.isNull())
+            base = obj->Shape.getShape();
+        else
+            operators.push_back(obj->Shape.getShape().getSubShape(sub.c_str()));
+    }
+
+    base.multiFuse(operators);
+    return base;
+}
+
+
+PROPERTY_SOURCE(PartDesign::ShapeBinder2D, Part::Part2DObject)
+
+ShapeBinder2D::ShapeBinder2D() {
+
+}
+
+ShapeBinder2D::~ShapeBinder2D() {
+
+}
+
+void ShapeBinder2D::onChanged(const App::Property* prop) {
+
+    if(! this->isRestoring()){
+
+        if(prop == &Support) {
+
+            auto objs = Support.getValues();
+            auto subs = Support.getSubValues();
+
+            Shape.setValue(ShapeBinder::buildShapeFromReferences(objs, subs)._Shape);
+        }
+
+    }
+    Part::Feature::onChanged(prop);
+}