How Do I Connect The Color Output Of An Image To The Magnitude Input Of A Field?

[georgep1]

I have a projected image texture at the same location as a grid of radial fields. I want the magnitude of each radial field to be the same as the the color value at its individual point on the image. how would I set this up and make these connections? I tried connecting the outcolor R value of the projection to the magnitude input of each radial field but it didnt seem to work.

Thanks in advance

[joojaa]

Hmm... render nodes are only available render time. If you have one picture and 12 emitters you will need to reference 12 node networks to do that outside of rendertime. This you must calculate the uv value for ach node saparately.

Not hard but not entirely trivial either.

[georgep1]

Im not sure if I am clear on what you are saying...you mean I would have to find the color value at a specific point on the image and type it in manually? If it is possible to do this outside of rendertime please tell me how I should set up my network.

Thanks

[joojaa]

No im saying you need the node netwokr for each and every emitter separately. then just porject it on whatever you have to obtain each nodes separate uv value against space and put it into the plcement node at end of each chain. (this calculation can be its own node network.)