next up previous contents
Next: Basic Use Up: The World Coordinate System Previous: LinSphCoordinateSystem: Combining Spherical and

Converting Between Multiple Coordinate Systems

 

The coordinate system classes are designed to support arbitrarily complex coordinate systems as well as to allow easy conversion between systems. The actual job of transforming between systems is done by one or more CoordTransform objects, each handling a specialized transformation. To engage a CoordTransform object, one can ``attach'' it to a CoordinateSystem object. By attaching multiple CoordTransform objects, one effectively can ``daisy-chain'' them together to produce more complicated transformations. They can be attached during the CoordinateSystem object's construction or anytime after, say, by request of the user. CoordTransform objects can also be used independent of any CoordinateSystem.





Ray Plante
Mon Aug 25 15:16:12 CDT 1997