   Transformation between two coordinatesystems
  I try to calculate the coords of a point in coord.system 2 when  in the coord.system 1 the coords of this point and the position of the other coord.system are given.thx a lotladrl 
  you need to transform the point from coordinate system 1, so effectively transforming the point into world coordinate system, and inverse transform it back to coord system 2. point *= CoordSystem1.Scale;point *= CoordSystem1.Orientation;point += CoordSystem1.Position;point -= CoordSystem2.Position;point *= CoordSystem2.Orientation.Transpose();point *= CoordSystem2.Scale.Inverse();P' = P * T1 * T2-1 [edited by - oliii on February 9, 2004 4:44:23 AM]