Re: [ROOT] Interactive canvas

From: Carlos Muņoz Camacho (cmunoz@clipper.ens.fr)
Date: Wed Oct 15 2003 - 21:46:54 MEST


On Fri, 10 Oct 2003, Rene Brun wrote:

>It is not clear if your question is related to basic graphics in the pad
>or to the GUI.
>
>In attachement, you will find a script drawing triangles in a canvas
>and showing some simple action when you click on one triangle.

    In your example one needs to click on the _outline_ of a triangle. Is
there a way to easily extend that so that we can click on the _inside_ of
the triangle (it's usually what we want). For the moment I calculate
whether I'm inside or outside from the mouse position. That's easy enough
for a square, but it can be useful to extend that to a closed
TPolyline(3D) in general...

Carlos



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