If the material has like 0.01 alpha it will "look" 100% transparent yet, wil 
react to mouse

Fabrice

On Nov 15, 2010, at 10:56 PM, DiereS wrote:

> Hi :)
> I need to make Plane(); object which will be invisible, but will
> respond to mouse interaction. I tried to set alpha to object or
> material, but if alpha is 0, the object does not respond to mouse. I
> hope is it clear. Help please :) Thx for reply. D

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