worked on navMesh stuff

- creation
- walking
- helper

navMesh/NavMeshLocation.h

@@ -3,17 +3,35 @@
 
 #include "../geo/Point3.h"
 
-template <typename Tria> struct NavMeshLocation {
+class NavMeshTriangle;
 
-	const Tria* tria;
+namespace NM {
 
-	Point3 pos;
+	/**
+	 * as Point3 -> Triangle (on Mesh) lookups are expensive,
+	 * we try to combine both information (point -> triangle)
+	 * most of the time using this structure
+	 */
+	template <typename Tria> struct NavMeshLocation {
 
-	/** ctor */
-	NavMeshLocation(Point3 pos, const Tria* tria) : pos(pos), tria(tria) {
-		;
-	}
+		/** point within the world (in meter) */
+		Point3 pos;
 
-};
+		/** NavMeshTriangle the point belongs to */
+		const Tria* tria;
+
+		/** empty ctor */
+		NavMeshLocation() : pos(0,0,0), tria(nullptr) {
+			;
+		}
+
+		/** ctor */
+		NavMeshLocation(const Point3 pos, const Tria* tria) : pos(pos), tria(tria) {
+			;
+		}
+
+	};
+
+}
 
 #endif // NAVMESHLOCATION_H