Perspective Extrusion

walter

After unsuccessful searchs,

Do you know how to make an extrusion of faces, not along the normals or an axe, but according to a vanishing point ?
Indifferently in 3dsMax or Maya.

Thanks !
Walter

Yerus

What's your intension with that? To create a fake perspective with distorted shapes? 

walter

In my case, it's to model rays of light passing trough objects holes.

throttlekitty

In Maya, you can start an extrusion, use the move tool to position at your vanishing point, and scale tool to pinch the selection together to fake the perspective. Using the Extrude nodes Offset attribute, you can adjust the size of the final points to tweak it as needed. This is for a single object with multiple holes however. If you need to do something like this across multiple meshes that you can't combine, you could look into wiring transforms from a Locator into the extrude nodes.

Eric Chadwick

In Max, I would select an edge loop in each hole, set the working transform to the light, shift-drag, Scale. 

walter

It works.
Thanks for your help ! ^^