ISSUE: rotation/scale center points incorrect

["Bezaire, Benoit" <bbezaire@ptc.com>]

Hi,

 

The latest proposal for the transform interface has (I believe) incorrect center points calculations.

 

The current rotation matrix:

 

[ cos(a) -sin(a) cx

  sin(a)  cos(a) cy

   0       0      1 ]

 

where a is the angle and (cx,cy) is the center point. This does not rotate a point around (cx,cy).

 

Same goes for scale matrix.

 

Benoit.