Implemented KRTriangle3 class.

Implemented swept sphere - mesh intersection testing / sphereCast functionality. - Not yet fully tested or optimized.

--HG--
branch : nfb

KREngine/kraken/KROctreeNode.h

@@ -51,6 +51,8 @@ public:
     
     bool lineCast(const KRVector3 &v0, const KRVector3 &v1, KRHitInfo &hitinfo, unsigned int layer_mask);
     bool rayCast(const KRVector3 &v0, const KRVector3 &dir, KRHitInfo &hitinfo, unsigned int layer_mask);
+    bool sphereCast(const KRVector3 &v0, const KRVector3 &v1, float radius, KRHitInfo &hitinfo, unsigned int layer_mask);
+
 private:
     
     KRAABB m_bounds;