Le 23 janv. 07 à 02:37, Robert Purves a écrit :


Alain Wrobel wrote:

I am using an OpenGl 3D scatter plot with a great number of points (US counties for example), is it possible in FB (v 4.2)
1) to know the "identification" (name of the county) of the point under the mouse cursor ?
2) to show the position of a given point in the plot (eg. I want to mark Hancock county in the plot with a color inversion or the flashing of the corresponding point)

I don't know of any FB code for picking, but you can read about the two main approaches here:
<http://www.lighthouse3d.com/opengl/picking/>

Robert P.

Merci Robert, I'll try to read !

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A. Wrobel * GREGUM-UMR ESO, Université du Maine/CNRS *Tel:02-43-83-35-44

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