add method multVec to MatrixPy class for better consistency

src/Base/MatrixPy.xml

@@ -67,6 +67,14 @@ Multiply a matrix or vector with this matrix
         </UserDocu>
       </Documentation>
     </Methode>
+    <Methode Name="multVec" Const="true">
+      <Documentation>
+        <UserDocu>
+multVec(Vector) -> Vector
+Compute the transformed vector using the matrix
+        </UserDocu>
+      </Documentation>
+    </Methode>
     <Methode Name="invert">
       <Documentation>
         <UserDocu>
@@ -242,4 +250,4 @@ Analyzes the type of transformation.
       { return *(getMatrixPtr()); }
     </ClassDeclarations>
   </PythonExport>
-</GenerateModel>
+</GenerateModel>

src/Base/MatrixPyImp.cpp

@@ -387,6 +387,16 @@ PyObject* MatrixPy::multiply(PyObject * args)
     return 0;
 }
 
+PyObject* MatrixPy::multVec(PyObject * args)
+{
+    PyObject *obj;
+    if (!PyArg_ParseTuple(args, "O!", &(VectorPy::Type), &obj))
+        return NULL;
+    Base::Vector3d vec(static_cast<VectorPy*>(obj)->value());
+    getMatrixPtr()->multVec(vec, vec);
+    return new VectorPy(new Vector3d(vec));
+}
+
 PyObject* MatrixPy::invert(PyObject * args)
 {
     if (!PyArg_ParseTuple(args, ""))