Reducing include dependencies in class VtkPolylinesSource.

Gui/VtkVis/VtkPolylinesSource.cpp

@@ -10,6 +10,10 @@
  */
 
 // ** INCLUDES **
+// GeoLib
+#include "Color.h"
+#include "Polyline.h"
+
 #include "VtkPolylinesSource.h"
 
 #include <vtkCellArray.h>

Gui/VtkVis/VtkPolylinesSource.h

@@ -16,7 +16,11 @@
 #include "VtkAlgorithmProperties.h"
 #include <vtkPolyDataAlgorithm.h>
 
-#include "GEOObjects.h"
+// forward declaration
+namespace GeoLib {
+class Polyline;
+}
+
 
 /**
  * \brief VtkPolylinesSource is a VTK source object for the visualisation of