Creative Communities of the World Forums

The peer to peer support community for media production professionals.

Forums Maxon Cinema 4D Anamorphic projections with “culling”

  • Anamorphic projections with “culling”

  • Pierre Lenfestey

    June 3, 2021 at 8:56 am

    Hi there. I’ve searched for this, but no joy.

    I want to project a texture onto a geometry using camera mapping as part of an experiment into anamorphic projections – we want to test out how we can paint an office space with a logo or shape which resolves when viewed from a particular point.

    In C4D I have a room with pillars in the middle and I want to create a perspectival anamorphic projection, such that, when I move the camera to a particular spot the image that is projected on the geometry looks like an ellipse, but when I move the camera to the side, we see that the texture has been projected and is “stuck” to the grometry.

    The problem I have (hopefully illustrated by the images) is that the texture passes through the geometry. I want the projection to act like a film projector, so the geometry that isn’t “seen” by the camera projection does not have the texture on it.

    I’ve investigated projecting texture via lights, but i want to give the impression that the image has been painted, raether than projected (which leaves shadows).

  • Pierre Lenfestey

    June 3, 2021 at 9:05 am

    Here’s the C4D file.

    I’ve also noticed that the projection doesn’t affect the back of the pillars, or the polygons onto which the projecton doesn’t fall at all, but when there’s a polygon where the projection would partially fall, the whole image is projected. A good example is the right hand side of teh ellipse projected onto the back wall of the room. Also, the area behind the pillars.

Viewing 1 - 2 of 2 posts

Log in to reply.

We use anonymous cookies to give you the best experience we can.
Our Privacy policy | GDPR Policy