add more constraints and rebuild solver system everytime it needs to be executed

src/Mod/Assembly/App/ConstraintOrientation.cpp

@@ -0,0 +1,93 @@
+/***************************************************************************
+ *   Copyright (c) 2012 Juergen Riegel <FreeCAD@juergen-riegel.net>
+ *		   2013 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_
+#endif
+
+#include <Base/Placement.h>
+#include <Base/Console.h>
+
+#include "ConstraintOrientation.h"
+#include "ConstraintPy.h"
+
+#include "ItemPart.h"
+
+
+using namespace Assembly;
+
+namespace Assembly {
+
+
+PROPERTY_SOURCE(Assembly::ConstraintOrientation, Assembly::Constraint)
+
+ConstraintOrientation::ConstraintOrientation() {
+    ADD_PROPERTY(Orientation, (long(0)));
+
+    std::vector<std::string> vec;
+    vec.push_back("Parallel");
+    vec.push_back("Perpendicular");
+    vec.push_back("Equal");
+    vec.push_back("Opposite");
+    Orientation.setEnumVector(vec);
+}
+
+short ConstraintOrientation::mustExecute() const {
+    //if (Sketch.isTouched() ||
+    //    Length.isTouched())
+    //    return 1;
+    return 0;
+}
+
+App::DocumentObjectExecReturn* ConstraintOrientation::execute(void) {
+    Base::Console().Message("Recalculate orientation constraint\n");
+    touch();
+    return App::DocumentObject::StdReturn;
+}
+
+void ConstraintOrientation::init(ItemAssembly* ass) {
+    //init the parts and geometries
+    Constraint::init(ass);
+
+    //init the constraint
+    dcm::Direction dir;
+    switch(Orientation.getValue()) {
+        case 0:
+            dir = dcm::parallel;
+            break;
+        case 1:
+            dir = dcm::perpendicular;
+            break;
+        case 2:
+            dir = dcm::equal;
+            break;
+        default:
+            dir = dcm::opposite;
+    };
+
+    m_constraint = ass->m_solver->createConstraint3D(getNameInDocument(), m_first_geom, m_second_geom, dcm::orientation = dir);
+}
+
+
+}