How to cull particles that get too close to the camera?

Question

The only way I have managed to do this is using a shape sampler and .kill()

I only need to kill particles that get within a constant distance of the camera so this seems like a poor solution.

Answer 1

Hi ! Which version of popcorn are you using ?
Using V2 :
You can access the position of the camera inside PopcornFX graph. We also have a template that takes a particle position as input and returns its distance to the camera. Here is how I used it to kill particles within a range of 1 unit (view.distance computations must be set to "evolve"):

https://i.ibb.co/LnkdmxV/Untitled.png

You might also want to disable particle render without killing it. You can use the "Enabled" pin for that purpose:

https://i.ibb.co/Q8s9CBz/Untitled2.png

Let me know if you're using V1.

Comments

Hi, sorry we are on version 1.13

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Using V1, you should be able to use the view.distance() function in an evolver script. Here's how I did it :

function void    Eval()
{
    int isInRange = view.distance(Position) < 1.0f;
    kill(isInRange);
}