Is there a way to implement lazy loading of textures for meshes, loading only the ones that are within camera view without relying on an excessive number of vectors in Raycaster?
Is there a way to implement lazy loading of textures for meshes, loading only the ones that are within camera view without relying on an excessive number of vectors in Raycaster?
If you're looking for a solution, consider utilizing a Frustum.
To set up the frustum from the camera, use the method Frustum.setFromProjectionMatrix:
const frustum = new THREE.Frustum().setFromProjectionMatrix( new THREE.Matrix4().multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse ) );
After obtaining the frustum, iterate through your scene objects to check if they are inside it:
const visibleObjects = []
yourScene.traverse( node => {
if( node.isMesh && ( frustum.containsPoint( node.position ) || frustum.intersectsObject( node ) ){
visibleObjects.push( node )
}
} )
Alternatively, a more complex approach involves using GPU picking to detect objects based on assigned color IDs during rendering. This method is intricate, so it's advisable to start with the frustum technique to see if it meets your requirements.
scene.traverseVisible(callback)
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