--- a/src/proto2/Terrain.cc	Sun Nov 30 14:01:06 2008 +0000
+++ b/src/proto2/Terrain.cc	Sun Nov 30 14:17:57 2008 +0000
@@ -124,6 +124,7 @@
 }
 
 
+
 // TODO: This could better :)
 // TODO: And this need some cleaning :)
 void Terrain::generateTerrain(int seed) {

--- a/src/proto2/Terrain.hh	Sun Nov 30 14:01:06 2008 +0000
+++ b/src/proto2/Terrain.hh	Sun Nov 30 14:17:57 2008 +0000
@@ -111,14 +111,14 @@
      * @param point Point where the tangent is calculated
      * @param n Accuracy in pixels 
      */
-    Vector getTangent(Vector point, int n = 1) const;
+    Vector getTangent(Vector prevPoint, Vector hitPoint,  int n = 1) const;
     /**
      * Get tangent for the given point.
      *
      * @param point Point where the tangent is calculated
      * @param a Accuracy in scaled units.
      */
-    Vector getTangent(Vector point, float a) const;
+    Vector getTangent(Vector prevPoint, Vector hitPoint, float a) const;
 
     /**
      * Return normal for the given point.
@@ -126,14 +126,14 @@
      * @param point Point for which the normal is calculated.
      * @param n Accuracy in pixels
      */
-    Vector getNormal(Vector point, int n = 1) const;
+    Vector getNormal(Vector prevPoint, Vector hitPoint, int n = 1) const;
     /**
      * Return a normal for the given point.
      *
      * @param point Point for which the normal is calculated.
      * @param a Accuracy in scaled units
      */
-    Vector getNormal(Vector point, float a) const;
+    Vector getNormal(Vector prevPoint, Vector hitPoint, float a) const;
 
     /**
      * Generate random terrain.