Displacing part of an editable mesh with a bitmap image HELP

V-Ray for 3ds Max V-Ray for 3ds Max :: General
1

I have posted a few times, read forums and haven’t sorted this out!

I am trying to displace a group of poly’s on a sphere using vray displacement modifier. I can get both 2d and 3d displacement working on simple primitives such as on a plane (for 2d) or a box (for 3d) where the geometry is unchanged. As soon as I try and get displacement working for a group of poly’s on an editable mesh object I have no joy at all! I get the warning “can’t displace mesh, map channel 1 not supported” All I am trying to do is select a group of poly’s on the side of a sphere and displace them to the shape of a displacement map I made in photoshop.

I also noticed that when I displaced a plane with a uniform mesh the bitmap showed up perfectly, however if I moved some of the edges to make them squint but kept the plane perfectly flat, the bitmap showed up changed as well (skewed). The reason I ask “should this happen” is because how can you displace poly’s with a bitmap and have the bitmap show perfectly undistorted, if the group of poly’s you are selecting have been moved around (say to form a curve, rather than being a plane?)

Can anyone who has successfully managed to do this tell HOW IT IS DONE? as all the tutorials I can find describe simple mapping of planes and 3d objects ro make stuff like hedges or billboard posters!

Thanks

2

My bitmap is 24 bits per channel

3

i just did a quick test and managed to displace a section of a sphere by cloning the selected area to a mesh and adding a uvw plane to it.

i checked ‘3d displacement’ and ‘keep continuity’

hope this helps.

4

Thanks for the reply! But I don’t want to clone the selected poly’s to a mesh. I only want to select the poly’s and keep them as part of the sphere. I to have managed to clone poly’s to a mesh and displace them, but try displacing poly’s which are still part of the sphere, ie - don’t clone them to anew mesh!?

I don’t know

5

no, i couldn’t get it to work without cloning either…

the only other thing i could suggest is making a displacement map for the whole sphere with the displacement area only in the area you want displacing… :?

confused? you will be… :slight_smile:

can you post any images of what you’re trying to achieve?
it might be easier to understand exactly what you’re on about…then you might get more replies. :slight_smile: