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Subject: ISSUE: rotation/scale center points incorrect
- From: "Bezaire, Benoit" <bbezaire@ptc.com>
- To: <cgmo-webcgm@lists.oasis-open.org>
- Date: Thu, 13 Dec 2007 08:24:06 -0500
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.
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