   How to find a quaternion between 2 vectors?
  Hi everyone;The problem is:A have a o object that performs rotation on abr axys with quaterns. This object have 3 vectors to define its base. well, when i drw it I have to to rotate it in opengl to match the system base, if I have 2 diferent bases, how to discover the quatern to change on into other?thaks.    --------------------------Rory Gallagher and Chico Science music !!!!!!!---------------------------____||~~~~|/\TT  
  http://www.gamedev.net/community/forums/topic.asp?topic_id=142112  ;  I think manuelb is talking about finding quaternion between 2 orthonromal bases (defined by 3 orthonormal vectors),but not quaternion between 2 vectors.  ;  If it realy such ... than i search the solution too.The fastest that i found is a realy Matrix to quternion code.  ;  A = oldA'' = inverse of AB = newC = transformation from A to BA'' = inverse of AB = ACA''B = A''ACC = A''BConvert C to quaternion.  