Lock Snap to Given Plane

[pipinek]

Greetings,

Is there any plugin to make possible to lock the snap to a given plane?
I have a difficulty to keep bezier curve snapping to the plane, the snap jumps to background objects.

Also I have seen once a plugin that make possible to select only visible parts of an object.
Alas I cannot recall its name.
I wiil appreciate if anyone could point it via a name or a link.

Thank you in advance.

[Dave R]

I don't know of any extensions that can change the inference snapping or if it's even possible. When I need to draw Bezier curves I usually start by drawing a rectangle to put it on. If I know where the control points need to be I will often mark them with crossing guide lines. With Fredo6's BZ_Spline tools, you can edit the location of the control points and sometimes it's useful to follow a guideline or other line in the model to keep the curve where you want it.

As for your other request, I don't remember anything like that. Sorry.

[pbacot]

As far as background objects go, would it work for you to create a group and do your work on a face within the group and "hide rest of model" selected?