Ignore Raycast

[jniac]

Is there any way to ignore pointer raycasting ?

Complex objects (eg. InstancedMesh) may take several ms for a raycast.
How to save unnecessary computation?

[mattrossman]

You can set up the properties for the default raycaster through the raycaster prop on the Canvas. Try setting it to a specific layer and keeping your expensive mesh on a different layer.
https://threejs.org/docs/index.html#api/en/core/Raycaster.layers

[jniac]

Many thanks.

[drcmda]

like @mattrossman said you can use layers, but you can also switch it off completely:

<instancedMesh raycast={null} />

even better, you can make raycast cheap:

import { meshBounds } from '@react-three/drei'

<instancedMesh raycast={meshBounds} />

now it will make a single bounds check to determine if the object has been pierced, which is very fast. https://codesandbox.io/s/r3f-basic-demo-8fpip