If you want old versions of RAPID, you can get them here. The 1.xx versions of RAPID all use the same interface -- clients should be able to use them interchangeably. Version 2.00 involved a change in the API which was not backward compatible with 1.xx series. However, with the verson 2.00 API we expect to be able to maintain backward compatibility for many future releases without difficulty.

• RAPID version 1.01 , (27792 bytes) Mar 28, 1996 -- the original release.
• RAPID version 1.01 , (27028 bytes) May 8, 1996
• RAPID version 1.02 was never released.
• RAPID version 1.03 , Sep 7, 1996 -- more robust tree building, more robust triangle overlap test.
• RAPID version 1.04 , Apr 19, 1997 -- more robust box overlap test, uniform scaling.
• RAPID version 2.00 , Jun 10, 1997 -- faster preprocessing, improved API.