Hi all, I’m a scientist trying to create a fancy animated plot using babylon.js. Basically I have two sets of x,y,z coordinate data for 1,000,000 data points, let’s call them position A and position B. I’d like to create a 3d scatter plot and animate the movement of each point (particle?) from po…

Hello and welcome! it is definitely easy with CPU particles but 1 million is a big number For GPU particles unfortunately we do not support end position (yet) but if you want to play with it I can help you hack your way around :slight_smile:

Thanks for the welcome and quick reply! I’m here after trying ThreeJS and finding that animating this many CPU particles is quite painful – it really needs to happen on the GPU for a smooth experience. I’m new to this (some d3.js only), so I worry that if I tried to hack together / implement my ow…

I could work on that for you (maybe not immediately but soon) Do you mind creating an issue for it on our repo?

Done: Particles - Babylon.js Documentation

Thanks to some help from Evgeni_Popov here are two PGs based on @jerome ’s suggestion. Both have 1 million points, the first uses the CPU, the second a shader. You can see the difference CPU - https://www.babylonjs-playground.com/#U2C1Q6#6 Shader - https://www.babylonjs-playground.com/#U2C1Q6#5 Of…

@Deltakosh Thanks for the amazingly quick turnaround. And thanks @JohnK @jerome @Evgeni_Popov it’s great to have different options – the PG’s are also a clear illustration of the advantage of animating with a GPU shader vs CPU. Would appreciate any pointers on matching the functionality of the sha…

For the GPU you may need to have a timer aligned with a static lifetime and when the timer is done you can kill the current particle system and replace it with a static one (where destiation = intial position)

GPU particles - start to end animation

Questions

jerome January 7, 2020, 8:38am 5

have you tried the Point Cloud Particle System ?
https://doc.babylonjs.com/how_to/point_cloud_particles

How to use a Shader with Point Cloud

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GPU particles - start to end animation

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