Procedural Art with Unity3D Particle Systems and Vector Fields

Unity Engine
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1

Hi,
Anyone here who has worked with Vector Fields, generative art in Unity with particles?

In the past few days, I have been experimenting creating patterns using the particle system in Unity Engine
I’m trying to do something similar like circle reference, but I’m having some difficulties to understand some parts.
I can’t found for example ‘Vector Fields’.
I don’t know nothing about code If was needed.

I have particles with flow, but doesn’t stop, and the scene is not very clean like reference

If anyone can help me. I appreciate

2

It is an interesting approach in that article.

He sets the camera to “don’t clear” because he wants to keep the particles making streaks.

I know that simply won’t work on some platforms.

For instance if you try it on Android or iOS the graphics are going to almost certainly flash or have trash on them.

Perhaps what he left out is that he is using a RenderTexture?

I think when you use that you simply keep adding to the RenderTexture.

I tried it real quick by putting a particle system on my stage in my scratcher demo. It does work.

Here’s my scratcher project (source is in comments):

I changed the hierarchy by putting a particle system in it:

9231387--1289493--Screen Shot 2023-08-17 at 10.07.09 PM.png

And then it looks like:

9231387--1289496--Screenshot-KurtGame-133368089519416750.jpg
9231387--1289496--Screenshot-KurtGame-133368089519416750.jpg1198×898 297 KB

I haven’t read how he did the vector field, perhaps he manipulated the particles themselves on a callback?

3

What i really need help is with Vector fields, because i that’s what i miss to finish the job
My particles have a flow

4

What do you mean by this? What have you tried, what are you having problems with?

How to report your problem productively in the Unity3D forums:

http://plbm.com/?p=220

This is the bare minimum of information to report:

  • what you want
  • what you tried
  • what you expected to happen
  • what actually happened, log output, variable values, and especially any errors you see
  • links to documentation you used to cross-check your work (CRITICAL!!!)

The purpose of YOU providing links is to make our job easier, while simultaneously showing us that you actually put effort into the process. If you haven’t put effort into finding the documentation, why should we bother putting effort into replying?

Generally a vector field is simply a function that accepts a vector and returns a vector.

Vector3 MyField(Vector3 position)
{
  return position * 123.0f;
}

He even provided a trivial one-line vector field for concentric circles.

Particle[i].position = new Vector3(Mathf.Cos(Time),Mathf.Sin(Time), someDisAwayFromCam) * (float) i;
5

I have Unity 2022.3.7f1 and I’m trying make something similar, like an article.
He use vector Fields, but i can’t find in my Unity.
And i don’t know nothing about code, so if i need use a code, i cant make nothing

6

A vector field is just a generic mathematical term, which I described in my amateur way above.

Here’s more reading:

https://en.wikipedia.org/wiki/Vector_field

You would need to write one that did what you want.

7

Thanks, but i really don’t understand nothing about that. I’m Just a 3D Artist