Circular Point Gradient Around Opening

[Olivia_Heading]

Hi there,

I am trying to create a randomised web-like drawing radiating out from a circular opening. I have achieved a gradient according to the y and x axis of a rectangle before, through deconstructing and remapping points and culling others. However, this time I am trying to establish a greater density of points around the inner circle, radiating out to the edge.

I have attached a screenshot of attempts I have tried but I am after something more like the (very rough) sketches! Any help would be hugely appreciated!

[laurent_delrieu]

Hello
you could remesh by color

How to control populate geometry?

You can use the power of RemeshByColour So make a mesh of your shape. Here a quad mesh to have some regular points. Measure distance to the curve for each point of the mesh. Color the mesh. [image] Then Remesh By Colour then dual mesh (equivalent of Voronoi, I use ngon one) [image] Playing with Graph Mapper allows you to make variations [image] [image] [image] Daught pisLD.gh (19.0 KB)

Mesh triangulation - recreating Zach Lieberman example

Hello you can also remesh by color [image] [image] gradient_points_triangulate_LD.gh (14.1 KB)

[Joseph_Oster]

I added the purple group for the inner circle to some code I wrote last month:

Distributing spheres gradiently towards a single attractor point

[gradient_points_2024Jan17a]

The spheres can be dropped, using only the points… to create a mesh… Do you have any code?

Many ways to play this…

[Olivia_Heading]

Hi Laurent,

That looks perfect but I am struggling to apply the script to my own surface and curves. I have uploaded the surface as drawn into rhino directly. Is there any chance you can see if it is an error on my part or the shape is too complex?
Gradient Surfaces.3dm (2.9 MB)

[Joseph_Oster]

R8 required,
This image looks very different from what you posted before. The method @laurent_delrieu linked to requires an Image Sampler with gradient image to drive the process, eh?

Correction, it does not. You have to study his code.

[Olivia_Heading]

Thanks Joseph. I do have R8.

I know this image looks very different, but I thought that if I managed to get the method working with the method I could develop it into this shape! However, I have not been able to get the original shape working either!

[laurent_delrieu]

Hello
you could reuse this tool from there

How to control populate geometry?

It is also possible to use another metric, instead of distance to the curve I use distance to the curve/(distance to the curve + distance to the border) so it gives a value between 0 and 1. I think it is nicer [image] [image] Daught pisLD v2.gh (15.9 KB)

Perhaps with some changes. The idea is to color a mesh in order to give indication to the tool Remesh By Color.
So let say you have attractor curves (the holes) and other curves (the border).
For each point of the curve you measure the distance (min distance to holes) and min Distance to Border
The ratio is DistanceTo Hole/(distance to hole + distance to border) so it is between 0 and 1. if (distance to hole + distance to border) = 0 => ration =0;

Here an example with 2 circles. Not the same as above but could help you to understand.
remesh by color.gh (19.7 KB)

Don’t forget to put the good interval for the radiuses, it depends on the size of your geometry

[Olivia_Heading]

Thank you so so much! Got it working now, massive help!!!