[JAVA3D] Rotation Matrix

[Spencer Goh]

Could anyone point me to a website which explains the matrix transforms for rotations. I need to do various rotations about a point, not necessarily the origin.  At the moment I’m computing them by hand using standard trig equations but I’m certain there is a nice neat was of putting it all into a Matrix but I just can’t remember how (Rusty on the old matrix maths !  J   transform.setRotation(Matrix3f) { a1, a2, a3   b1, b2, b3   c1, c2, c3 }   if anyonen could tell me what I have to put in those fields.. eg.. to get a rotation about the X-axis by n degrees about the point by m(xx, yy, zz) etc etc  just the whole load of them..   As I said, I currently use a load of sines and cosines to calculate it myself.. but then I’m stuck cos I can’t use rotX rotY rotZ because the reset the other transforms and I can’t figure out how to use setRotation…   Any explainations of how to use the rotation matrix or pointers to web resources appreciated.   Thanks Spencer Goh   ~~~~~~~~~~~~~~~~~~~~~~~~ Postgraduate Computer Science University of Birmingham 07747 600 436 www.spencergoh.com [EMAIL PROTECTED]