In your case you could use the front clipping plane of the camera as cut plane.
Moving the camera and/or changing the front clipping plane distance will change
the cross section.
If you use ModelClip then the clipping will also be seen on other cameras in
the scene.

R CM schrieb:

> hi all,
> I'm looking for some help or some code exemples
>
> i'm want to move a cut plane on a shape and getting
> the cross-section  in a other canvas (2D or 3D)
>
> i think i must use the modelClip class but i'm not
> sure and I dont understand how it's work...
> i have already try to use a camera locate on the cut
> plane (perpendicularly) with a small distance between
> the front clip and the the back clip but it's not
> efficient.

why not efficient ?

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