AttributeRefAttrPtr aCenterAttr =
myBaseConstraint->refattr(SketchPlugin_MultiRotation::CENTER_ID());
std::shared_ptr<PlaneGCSSolver_PointWrapper> aRotCenter =
AttributeRefAttrPtr aCenterAttr =
myBaseConstraint->refattr(SketchPlugin_MultiRotation::CENTER_ID());
std::shared_ptr<PlaneGCSSolver_PointWrapper> aRotCenter =