Tsparticles: Particles emitters

[matteobruni]

New feature about places that emits new particles

[matteobruni]

This repo https://github.com/lindelof/particles-bg samples is what I'm talking about, but I don't want to add a dependency

[mbelic]

Hello,

Thank you for the great work on the particle system.
I was wondering if there are any options to make particles start from one particular part of the screen or point? Now they are all rendered on the whole canvas area and start from there.

Is this issue connected with that - namely emitters?

[matteobruni]

Hi @mbelic,

Yes this issue is what you're describing. I hope to start working on them before April ends. I found some bugs and I'm preparing the 1.12.8 version.

You can have a similar effect using the move direction but they are the same particles following a direction, like the Big Particles preset on the demo website

[mbelic]

Thanks for info. Good luck on next version!

P.S. If anyone needs dirty fix in the meantime:
As I needed bubbles floating up (similar to snow - just moving upwards), I managed to get desired effect (off-screen generation) by increasing canvas height by 200% (lower part off screen) and modifying calcPosition function to generate everything in lower half of the canvas with:
i.y : t.canvas.dimension.height-(Math.random() * (t.canvas.dimension.height/2))

[matteobruni]

A little sneak peek

For starting today it's something, if you want to test it I can release an alpha version

[matteobruni]

@mbelic I've released the 1.13.0-alpha.0 for testing emitters, if you want you can test it