Hi all, I am trying to make this selection demo better but stuck on filtering out fully hidden meshes. The existing solution is very slow due to raycasts. is there any better solution to filter hidden meshes or selecting meshes in general? PG: https://www.babylonjs-playground.com/#Q5KMXP#116 Th…

Thanks for the response. Yes i tried occlusion queries but it’s didn’t work and made scene slower too. Selection with occlusion: https://www.babylonjs-playground.com/#Q5KMXP#117 (not working) octree.select also doesn’t filter the occluded meshes.

Using occlusion queries in this scenario won’t work anyway (TIL!) From the docs: Very important : The meshes you activate for occlusion requests must be rendered after their potential occluders! The easiest way to do this is to set their renderingGroupId property to a value greater than that of th…

I am developing a feature in an app where users can select machine parts and set texture/color to the group. I ended up implementing color picking. Its faster than raycasts and pixel perfect so partially visible meshes can also selected. Color picking: https://www.babylonjs-playground.com/#Q5KMXP…

I’ve recently added this one: [image] GPU multi picking Tutorials and tips A function called multiPickAsync has been added. It’s similar to the pickAsync function but accepts an array of IVector2Like coordinates as an input not just a single one. DOCS: Babylon.js docs …

That’s great! I’ll use it in my annotation viewer piece next.

[image] poshuk: do you have any idea what might be causing this issue? I bet your render target is not ready yet.

You are right. Shader compilation takes more than a frame thats why rtt was blank. I fixed it by adding a flag to check if shader is compiled. Babylon.js Playground Babylon.js playground is a live editor for Babylon.js WebGL and WebGPU 3D scenes thanks @ro…

How to determine if a mesh is fully hidden behind other mesh?

Questions

roland September 4, 2024, 7:45pm 6

I’ve recently added this one:

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How to determine if a mesh is fully hidden behind other mesh?

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