I'm trying to control frequency of Cellular noise with distance from the middle of the UV map. There is some weird distortion on the noise - any ideas how this could be achieved?
As advised on other forum - I tried using P length (my circle has radius of 1, placed in 0,0,0), to control frequency but the effects are the same.
I'm guessing the frequency is calculated in conjunction with UV map itself as the distortion is pointing in the UV corner where values are 0,0. What's going on here?
If guessed right u are trying to do something like this?
In that case, 2 considerations:
1) as you can see I used the unified noise, whose voronoi variations are good substitute for the cellular noise. (unified noise is the preferred noise to work with, as it groups most of houdini noises. Also in hou17 it got a significant speed bump) 2) use the node distance to compute the distance from the center. Don't know why the length node doesn't work (maybe it has to do with the “signature” of the vector.. this is obscure to me. 3) play with the pow node to have non-linear progression.
pitapan I'm trying to control frequency of Cellular noise with distance from the middle of the UV map. There is some weird distortion on the noise - any ideas how this could be achieved?
in both of your examples just subtract {0.5, 0.5, 0} from your uv before plugging to cellular noise just so that center for the frequency scale is at the center of your uvs which is the center you want to scale from
tamte in both of your examples just subtract {0.5, 0.5, 0} from your uv before plugging to cellular noise just so that center for the frequency scale is at the center of your uvs which is the center you want to scale from
