Hi Anthony,

There were some faults like this in -fx early on. These should be all
fixed now.

I tried the 6.3.0 version and it seems to work

What are you attempting to do with the arc-sine function?

I myself have been using arc-tangent for generating 'wrap into a
circle' or 'polar function' image displacement maps...
http://www.cit.gu.edu.au/~anthony/graphics/imagick6/distorts/ #map_polar

That's exactly it. I'm trying to build a displacement map to simulate the projection of the image on a cylinder. It works quite well. I'll send you a result of my investigations if you want. By the way, your page is very interesting and corresponds greatly to what I needed. Thanks ! :-)

The only problem I have right now is the speed. I call those image transformations from a php script, and it may take a while to generate if the image is large (say 300x300, which is not that large), making the web user wait. Obviously, the problem lies in the complexity of the mathematical expression and in the interpretation of this expression, so i'm trying to limitate the number of operations. I'll see what I can do, but if you have some hints, they will be welcome !

Thanks very much, anyway.

Damir

====================================
Damir Buskulic,  Universite de Savoie/LAPP
B.P. 110, F-74941 Annecy-le-Vieux Cedex, FRANCE
Tel : +33 (0)450091600
====================================


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