[TD]corrupt dim reference detect and correct

src/Mod/TechDraw/App/GeometryMatcher.h

@@ -0,0 +1,64 @@
+/***************************************************************************
+ *   Copyright (c) 2023 WandererFan <wandererfan@gmail.com>                *
+ *                                                                         *
+ *   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                                *
+ *                                                                         *
+ ***************************************************************************/
+// a class to handle changes to dimension reference geometry
+
+#ifndef GEOMETRYMATCHER_H
+#define GEOMETRYMATCHER_H
+
+#include <Mod/TechDraw/TechDrawGlobal.h>
+
+#include <DrawViewDimension.h>
+
+namespace Part
+{
+class TopoShape;
+}
+
+namespace TechDraw {
+
+class TechDrawExport GeometryMatcher {
+public:
+    GeometryMatcher() {}
+    GeometryMatcher(DrawViewDimension* dim) { m_dimension = dim; }
+    ~GeometryMatcher() = default;
+
+    bool compareGeometry(Part::TopoShape geom1,  Part::TopoShape geom2);
+    bool comparePoints(TopoDS_Shape shape1,  TopoDS_Shape shape2);
+    bool compareEdges(TopoDS_Shape shape1,  TopoDS_Shape shape2);
+
+    bool compareLines(TopoDS_Edge edge1, TopoDS_Edge edge2);
+    bool compareCircles(TopoDS_Edge edge1, TopoDS_Edge edge2);
+    bool compareEllipses(TopoDS_Edge edge1, TopoDS_Edge edge2);
+    bool compareBSplines(TopoDS_Edge edge1, TopoDS_Edge edge2);
+    bool compareDifferent(TopoDS_Edge edge1, TopoDS_Edge edge2);
+    bool compareCircleArcs(TopoDS_Edge edge1, TopoDS_Edge edge2);
+    bool compareEllipseArcs(TopoDS_Edge edge1, TopoDS_Edge edge2);
+
+private:
+    bool compareEndPoints(TopoDS_Edge edge1, TopoDS_Edge edge2);
+
+    DrawViewDimension* m_dimension;
+};
+
+} //end namespace TechDraw
+#endif
+