I'm trying to create a gradient look where I have a box scattering along my geometry via 'copy to points' and want to have the bottom part rescale to something small, and the top rescale to a larger size. So the box scatter would shrink as it gets lower on my geometry.
But I can't figure out a way to do that with a 'soft' transition. I'm new to Houdini still, but the closest I got was to use a group - bouding box - plugged into an attribute random. But its a very harsh line. What do I do to soften this?
Creating a soft gradient 'attribute randomize' pscale?
2957 2 2
-
- ninamarievisuals
- Member
- 1 posts
- Joined: Jan. 2022
- Offline
-
- Tanto
- Member
- 538 posts
- Joined: Nov. 2016
- Offline
I'd use a point wrangle node to establish a base pscale on your emitting geometry.
Something like:
Then click on the small slider icon at the right of your code to get sliders for your minimum and maximum size, and a ramp for the falloff.
Then if you want to add randomness, you can use an attribute noise down the graph with operation set to multiply.
Hope that helps.
Something like:
float minsize = ch('min_size'); float maxsize = ch('max_size'); f@pscale = fit01(chramp('pscale_over_y', relbbox(0, v@P).y), minsize, maxsize);
Then click on the small slider icon at the right of your code to get sliders for your minimum and maximum size, and a ramp for the falloff.
Then if you want to add randomness, you can use an attribute noise down the graph with operation set to multiply.
Hope that helps.
Edited by Tanto - Jan. 31, 2022 12:57:14
-
- eikonoklastes
- Member
- 447 posts
- Joined: April 2018
- Offline
-
- Quick Links