this may be a silly question. but I just want to make sure. Given a 3d point p (x,y,z), and the rotation matrix R. what is the coordinate of p after rotation R? is it R*P? I did an experiment and found it does not give the results as I expected. Thanks.
Asked
Active
Viewed 79 times
0
-
Have you tried post multiplying instead of pre multiplying? – Evan Knowles Apr 16 '13 at 09:15
-
It is. If it isn't - either matrix or multiplication is wrong. – keltar Apr 16 '13 at 11:53
-
Evan Knowles: post multiplying? you mean P*R? that can't even compile. – Tao Hu Apr 16 '13 at 12:58
-
Pre or post are all the same. It depends only on how you threat vectors - as rows or as columns. – keltar Apr 16 '13 at 13:52