jyoung77

04-25-2003, 11:15 PM

Hi,

Can someone tell me how to calculate the transformation matrix by which a given vector can be rotated to a direction incident to another given vector (e.g. from (1, 1, 1) to (2, 7, 5)? Or is there a free library tool for this? If inside the OpenGL environment, I can use glRotate(), glGet(), etc. to get it very easily. But I often need it without the OpenGL support. Could you help? Thanks very much.

Tony

Can someone tell me how to calculate the transformation matrix by which a given vector can be rotated to a direction incident to another given vector (e.g. from (1, 1, 1) to (2, 7, 5)? Or is there a free library tool for this? If inside the OpenGL environment, I can use glRotate(), glGet(), etc. to get it very easily. But I often need it without the OpenGL support. Could you help? Thanks very much.

Tony