Deforming Geo Using Camera Projection ...

[djwarder]

Hey guys

I've been using the UVTexture node to project a texture onto a grid using the 'Perspective From Camera' mode, so that it looks correct from a distant camera. But now I'd like to keep the texture as a flat planar projection & deform the geometry using the same technique. Any idea if this is possible at all?

Cheers!

[Kappy]

Are you wanting to do the deformation in SOPs or in a shader? SOPs is easy - in a Point SOP or VOP SOP, just add the texture value back to P, and voila! If you want to deform in a shader, just do the texture lookup in your displacement shader... Is that what you're asking, or am I misunderstanding?

[djwarder]

SOPs is easy - in a Point SOP or VOP SOP, just add the texture value back to P, and voila!

Yeah, trying to do it in SOPs, but don't quite know what you mean. Assuming this is probably easier that I'm making it, but still can't get my head around this!!

[ford77]

Is this is what you`re looking for?

update the image in the cop network.

tha camera is animated. if you

play it the deformation will change

according the camera movement.

Basically it doest`nt matter how you create you`re

UVs just create them on points. After you have the

UVs add the texture map you want to deform with

with a color map in a vop sop. Then you`ll have

RGB values on all points and you can use those values

for manipulating the point positions.

deform_with_image_v02.hip

deform_with_image.hip

Edited December 30, 2011 by ford77

[djwarder]

Aha, cheers! That's definitely going the right way for what I need to do. The more advanced projection example seems to do what I was expecting, thanks for posting the example!