Added retrieval of points and segments for voronoi diagram

src/Mod/Path/App/Voronoi.cpp

@@ -293,7 +293,7 @@ void Voronoi::colorColinear(Voronoi::color_type color, double degree) {
 
 void Voronoi::resetColor(Voronoi::color_type color) {
   for (auto it = vd->cells().begin(); it != vd->cells().end(); ++it) {
-    if (color == -1 || it->color() == color) {
+    if (color == 0 || it->color() == color) {
       it->color(0);
     }
   }

src/Mod/Path/App/VoronoiPy.xml

@@ -83,5 +83,25 @@
                 <UserDocu>assign color 0 to all elements with the given color</UserDocu>
             </Documentation>
         </Methode>
+        <Methode Name="getPoints" Const="true">
+            <Documentation>
+                <UserDocu>Get list of all input points.</UserDocu>
+            </Documentation>
+        </Methode>
+        <Methode Name="numPoints" Const="true">
+            <Documentation>
+                <UserDocu>Return number of input points</UserDocu>
+            </Documentation>
+        </Methode>
+        <Methode Name="getSegments" Const="true">
+            <Documentation>
+                <UserDocu>Get list of all input segments.</UserDocu>
+            </Documentation>
+        </Methode>
+        <Methode Name="numSegments" Const="true">
+            <Documentation>
+                <UserDocu>Return number of input segments</UserDocu>
+            </Documentation>
+        </Methode>
     </PythonExport>
 </GenerateModel>

src/Mod/Path/App/VoronoiPyImp.cpp

@@ -253,6 +253,54 @@ PyObject* VoronoiPy::resetColor(PyObject *args) {
   return Py_None;
 }
 
+PyObject* VoronoiPy::getPoints(PyObject *args) {
+  double z = 0;
+  if (!PyArg_ParseTuple(args, "|d", &z)) {
+    throw Py::RuntimeError("Optional z argument (double) accepted");
+  }
+  Voronoi *vo = getVoronoiPtr();
+  Py::List list;
+  for (auto it = vo->vd->points.begin(); it != vo->vd->points.end(); ++it) {
+    list.append(Py::asObject(new Base::VectorPy(new Base::Vector3d(vo->vd->scaledVector(*it, z)))));
+  }
+  return Py::new_reference_to(list);
+}
+
+PyObject* VoronoiPy::getSegments(PyObject *args) {
+  double z = 0;
+  if (!PyArg_ParseTuple(args, "|d", &z)) {
+    throw Py::RuntimeError("Optional z argument (double) accepted");
+  }
+  Voronoi *vo = getVoronoiPtr();
+  Py::List list;
+  for (auto it = vo->vd->segments.begin(); it != vo->vd->segments.end(); ++it) {
+    PyObject *p0 = new Base::VectorPy(new Base::Vector3d(vo->vd->scaledVector(low(*it), z)));
+    PyObject *p1 = new Base::VectorPy(new Base::Vector3d(vo->vd->scaledVector(high(*it), z)));
+    PyObject *tp = PyTuple_New(2);
+    PyTuple_SetItem(tp, 0, p0);
+    PyTuple_SetItem(tp, 1, p1);
+    list.append(Py::asObject(tp));
+  }
+  return Py::new_reference_to(list);
+}
+
+PyObject* VoronoiPy::numPoints(PyObject *args)
+{
+  if (!PyArg_ParseTuple(args, "")) {
+    throw  Py::RuntimeError("no arguments accepted");
+  }
+  return PyLong_FromLong(getVoronoiPtr()->vd->points.size());
+}
+
+PyObject* VoronoiPy::numSegments(PyObject *args)
+{
+  if (!PyArg_ParseTuple(args, "")) {
+    throw  Py::RuntimeError("no arguments accepted");
+  }
+  return PyLong_FromLong(getVoronoiPtr()->vd->segments.size());
+}
+
+
 // custom attributes get/set
 
 PyObject *VoronoiPy::getCustomAttributes(const char* /*attr*/) const