searchChildInFrustum method

void searchChildInFrustum(Frustum frustum, Object3D object)

Implementation

void searchChildInFrustum(Frustum frustum, Object3D object ) {
	if ( object is Mesh || object is Line || object is Points ) {
		if ( object is InstancedMesh ) {
			instances[ object.uuid ] = [];

			for (int instanceId = 0; instanceId < (object.count ?? 0); instanceId ++ ) {
				object.getMatrixAt( instanceId, _matrix );
				_matrix.decompose( _center, _quaternion, _scale );
				_center.applyMatrix4( object.matrixWorld );

				if ( frustum.containsPoint( _center ) ) {
					instances[ object.uuid ].add( instanceId );
				}
			}
		}
      else {
			if ( object.geometry?.boundingSphere == null ) object.geometry?.computeBoundingSphere();
			_center.setFrom( object.geometry!.boundingSphere!.center );
			_center.applyMatrix4( object.matrixWorld );

			if ( frustum.containsPoint( _center ) ) {
				collection.add( object );
			}
		}
	}

	if ( object.children.isNotEmpty ) {
		for (int x = 0; x < object.children.length; x ++ ) {
			searchChildInFrustum( frustum, object.children[ x ] );
		}
	}
}