16 Dec
2005
16 Dec
'05
2:31 p.m.
On 12/16/05, David Soukal <david.soukal@...719...> wrote:
Is there a description of the interpretation of the matrix? I remember vaguely from my graphics course... Most notably: I do no want to reset the traslation & rotation.. only scaling...
Rotation and scaling are hard to disentangle. Translation is easy, however: it's the rightmost column that must be set to 0 to remove translation.
To remove only scaling, I _think_ (not tested) you need to reduce the two left columns proportionally so that A*D - B*C = 1. In any case, not easy to do manually, unfortunately.
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