Perspective Extrusion

walter · Apr 2019

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 · Apr 2019

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

walter · Apr 2019

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

throttlekitty · Apr 2019

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.

Image: https://us.v-cdn.net/5021068/uploads/editor/h1/3sc5lk093q57.jpg

Eric Chadwick · Apr 2019

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

walter · Apr 2019

It works.
Thanks for your help ! ^^

Perspective Extrusion

Replies