Hi Sajjad,
On 28/3/09 12:01 PM, ami guru wrote:
With callbacks we dynamically modify the node during the update
traversal.So any node that has already gone through some affine
transformation will be replaced in the call backs, but not concatenated.
On the other hand if we specify any affine trnasformation after calling
the callback, the last transformation will be concatenated to the one
that have been assigned durng callbacks.
And that happens to any type of dynamic transformation , not only with
the affine one.
I'm not quite sure I follow you. What you're describing has nothing to do with the update
traversal as such.
You're setting the transformation matrix of a certain node. Naturally this overwrites
whatever was set before.
If you need a certain transformation (e.g. a scale) to be preserved then either put it in
a parent or child MatrixTransform or include it in the calculated matrix. Or decompose
the existing matrix and re-assemble it with the modified values.
Cheers,
/ulrich
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