project mapping on to instanced objects

[muzaffer]

Hi All,

 

I have a issue doing mapping image from project cam to instanced objects, using instance sop not "copy sop"

probably there is a easy solution I am skipping.

if my question is not clear enough  i can throw a hip file here.

 

Any pointers would be greatly appreciated.

 

cheers

[xray]

In the shader of object to be instanced you need to transform P into camera space.

In VOPs:

The "lightndc" option of the transform VOP seems to do this. The docs say it's intended for a light shader but in the surface context, it seems to read the global render camera. I suppose you could use lights in the scene to effectively project from alternate angles as well.

Wire P into transform VOP set from current to lightndc.

Split the vector and use U and V as the S and T input to your texture operation.

[muzaffer]

Thanks xray, I will try what you explained here.