- Implemented methods for determining amount of scene that has streamed in. (KRScene::getStreamLevel, KRNode::getStreamLevel, KRModel::getStreamLevel, KRMaterial::getStreamLevel, and KRTexture::getStreamLevel

- Implemented connection between LOD groups and texture streaming, which delays the switch to a new LOD group until the required textures have completed streaming in.
- Corrected bug in KRMaterial that resulted in reflection cube texture names being formatted incorrectly in the mtl file
- Scene graph now requires that lod_group nodes only be contained within lod_set nodes.
- Scene graph  group nodes that do not have a LOD minimum or maximum distance are now stored as "node" rather than as "lod_group" nodes.
- IMPORTANT!  Scenes exported with this version will not be backwards compatible with earlier versions due to the requirement of lod_set nodes.

--HG--
branch : nfb
extra : rebase_source : 1ff640b85338a794841ebbb2bf0087306ff59143

KREngine/kraken/KRLODGroup.h

@@ -20,8 +20,6 @@ public:
     virtual tinyxml2::XMLElement *saveXML( tinyxml2::XMLNode *parent);
     virtual void loadXML(tinyxml2::XMLElement *e);
     
-    virtual void updateLODVisibility(const KRViewport &viewport);
-    
     float getMinDistance();
     float getMaxDistance();
     void setMinDistance(float min_distance);
@@ -32,8 +30,9 @@ public:
     void setUseWorldUnits(bool use_world_units);
     bool getUseWorldUnits() const;
     
-private:
     bool getLODVisibility(const KRViewport &viewport);
+    
+private:
     float m_min_distance;
     float m_max_distance;
     KRAABB m_reference; // Point of reference, used for distance calculation.  Usually set to the bounding box center