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Get visible meshes. Octree?


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I wonder what is the best way to get only these meshes which are visible by camera at the moment.

I know there is octree implementation in babylon, but Im not sure how to use it.

I've seen this https://github.com/BabylonJS/Babylon.js/wiki/Optimizing-performances-with-octrees

but still have problems to make it work.


If someone could explain (write a piece of code or pseudo code) how to make it.

Lets say I have 5 cubes on my scene and a free camera.

I would like to have a function that would return meshes which are visible in a viewport of my camera.


Thank you,



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  • 2 years later...


You can also build your own array with camera.isInFrustum(mesh)

var meshesInFrustum = [];

function updateFrustum(){

  meshesInFrustum.length = 0;

  for(var i = 0, length = scene.meshes.length; i < length; i++){
    var mesh = scene.meshes[i];
    if( mesh && mesh.isVisible && camera.isInFrustum(mesh) )





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That's a cool solution !

Thanks !


I just tested and that still don't take into account if a mesh is occuling another.

I'm looking for a different way to solve my issue by checking if a mesh is facing the current camera to do what I want.

Edited by Gil
I tested the code
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