App::DocumentObjectExecReturn* ShapeBinder::execute(void) {
if (!this->isRestoring()) {
Part::Feature* obj = nullptr;
std::vector<std::string> subs;
ShapeBinder::getFilteredReferences(&Support, obj, subs);
//if we have a link we rebuild the shape, but we change nothing if we are a simple copy
if (obj) {
Part::TopoShape shape = ShapeBinder::buildShapeFromReferences(obj, subs);
//now, shape is in object's CS, and includes local Placement of obj but nothing else.
if (TraceSupport.getValue()) {
//compute the transform, and apply it to the shape.
Base::Placement sourceCS = //full placement of container of obj
obj->globalPlacement() * obj->Placement.getValue().inverse();
Base::Placement targetCS = //full placement of container of this shapebinder
this->globalPlacement() * this->Placement.getValue().inverse();
Base::Placement transform = targetCS.inverse() * sourceCS;
shape.setPlacement(transform * shape.getPlacement());
}
this->Placement.setValue(shape.getTransform());
this->Shape.setValue(shape);
}
}
return Part::Feature::execute();
}
TopoDS_Shape Datum::getShape() const
{
Part::TopoShape sh = Shape.getShape();
sh.setPlacement(Placement.getValue());
return sh._Shape;
}