Created classes for PlanetGeometry

Added SimpleSphereGeometry
Created infrastructure for added other geometries

include/openspace/rendering/planets/renderableplanet.h

@@ -27,10 +27,8 @@
 
 // open space includes
 #include <openspace/rendering/renderable.h>
-#include <openspace/util/powerscaledsphere.h>
-#include <openspace/properties/scalarproperty.h>
+
 #include <openspace/properties/stringproperty.h>
-#include <openspace/properties/vectorproperty.h>
 
 // ghoul includes
 #include <ghoul/opengl/programobject.h>
@@ -38,6 +36,10 @@
 
 namespace openspace {
 
+namespace planetgeometry {
+class PlanetGeometry;
+}
+
 class RenderablePlanet : public Renderable {
 public:
     RenderablePlanet(const ghoul::Dictionary& dictionary);
@@ -53,17 +55,14 @@ public:
     void update() override;
 
 protected:
-    void createSphere();
     void loadTexture();
 
 private:
-    properties::Vec2Property _radius;
-    properties::IntProperty _segments;
     properties::StringProperty _colorTexturePath;
 
     ghoul::opengl::ProgramObject* _programObject;
     ghoul::opengl::Texture* _texture;
-    PowerScaledSphere* _planet;
+    planetgeometry::PlanetGeometry* _geometry;
 };
 
 }  // namespace openspace