Hi

I would like to be able to have an area of high intensity on an object which is animating through 3D space. I have already used normals, incident and dot product to get the camera's facing ratio. However, what I need here is slightly different.

There will be a fixed point in space that applies intensity to the side of the object that is facing towards it. The intensity could be a color attribute value.

I have tried using attribute transfer which is somewhat useable but not so useful when the object is moving and tumbling.

Any help would be appreciated.

Have you tried to “attach” the fixed point to the object first ?
With the node Point Deform you can “carry” the fixed point along with your object deformation / moving / tumbling. Once your fixed point moves along with your object then you can use the attribute transfer approach.

Of course this would mean that the fixed point is no longer really “fixed”, since it's moving with the object now.