Coloring a Voronoi Graph

Question

Intro:

I want to convert a Voronoi Graph made with this awesome library by jceipek on GitHub into something I can work on.

So far so good, this user provides with a demo to start with and shows how to generate the VG.

Question:

How do I convert the VG (made by edges and that dot in the middle) into something that I can work with?

Such as, after you generate some noise and apply to it (height), you colour the polygons based on it.

Thoughts:

Something comes to my mind about instantiating meshes and tiles based on the edges and the position of the dot as a start, but it won't work if I can't "detect" the polygon.

Expected result:

Image from this blog about Voronoi Mapping link

What I have:

It is drawn with Gizmos (for visual debugging in Unity)

I want to know how to color my polygons as in the expected image above. So I thought about doing a mesh or individual tile (and color it based on height afterwards but that is sauce for another question if needed)

Edit of my progress:

To further explain this question I provide the next image.

The image shows that I could use that position data somehow and turn that random polygon shape into a "tile" that will have a colour (mesh?) and possible data in it (script).

I hope this helps otherwise let me know in the comments.

Answer 1

While you could detect the polygon, it would be simpler to directly use the data that was used to generate them.

If you check Voronoi.cs there is a method called Regions () which returns a List<List<Vector2>>. Each sub list is list of points for a given region. From there you can turn the points into a mesh.

Answer 2

So you can do this by placing a cone mesh (tip facing the camera) at each point.

Assuming each cone has a unique color (and sufficient radius), the depth buffer should automatically "segment" your colors (assuming an ortho camera).