Hi,

I have a terrain, and i want to use newton for collision detection.. i have the terrain working and the physics of course in not working to good,

my code is:
Code:
procedure TMTFloor.CreateCollisionTree;
var
  Face: Array [0..3] Of Geometry.TVector3f;
  M: Geometry.TMatrix4f;
  Min,Max: Geometry.TVector3f;
  X,Z: Integer;
begin
  nCollTree := NewtonCreateTreeCollision(nWorld, Nil);
  NewtonTreeCollisionBeginBuild(nCollTree);

  For X := 0 To MAP_SIZE Do
  Begin
    For Z := 0 To MAP_SIZE Do
    Begin
      xz := floorIndex(X, Z);
      x1z := floorIndex(X+1, Z);
      xz1 := floorIndex(X, Z+1);
      x1z1 := floorIndex(X+1, Z+1);

      Face[0] := Vector3fMake(X*lBlock,     height[xz],   Z*lBlock);
      Face[1] := Vector3fMake((X+1)*lBlock, height[x1z],  Z*lBlock);
      Face[2] := Vector3fMake((X+1)*lBlock, height[x1z1], (Z+1)*lBlock);
      Face[3] := Vector3fMake(X*lBlock,     height[xz1],  (Z+1)*lBlock);

      NewtonTreeCollisionAddFace(nCollTree, 4, @Face[0], SizeOf(TVector3f), 1);
    End;
  End;

  NewtonTreeCollisionEndBuild(nCollTree, 0);
  nBody := NewtonCreateBody(nWorld, nCollTree);

  M := IdentityHmgMatrix;
  NewtonBodySetMatrix(nBody, @M[0, 0]);
  NewtonCollisionCalculateAABB(nCollTree, @M[0, 0], @Min[0], @Max[0]);
  NewtonSetWorldSize(nWorld, @Min[0], @Max[0]);
  NewtonReleaseCollision(nWorld, nCollTree);
end;
lBlock is a const value set at 8.001, this is because the terrain is scaled by 8.001, 1, 8.001..

If i dont use scale and i take out lBlock then the physics works fine, so im positive its something to with the scale, so i removed glScale from the terrain, and i am now using the same coordinates given to Newton, the terrain renders correctly yet still the collision detection does'nt.. am i missing something??

Thanks for any help