export default UIBlockLayer3DFacade;
/**
 * A single layer in a UI Block's rendering, e.g. background or border. All layers honor
 * border radius, which is calculated shader-side for perfectly smooth curves at any scale,
 * with antialiasing.
 *
 * Layer meshes are rendered via GPU instancing when possible -- specifically when they share
 * the same Material instance, layering depth, and shadow behavior.
 *
 * You shouldn't have to use this directly; UIBlock3DFacade will create these as needed
 * based on background/border styles.
 */
declare class UIBlockLayer3DFacade {
    constructor(parent: any);
    _colorObj: Color;
    size: Readonly<Vector2>;
    borderRadius: Readonly<Vector4>;
    borderWidth: Readonly<Vector4>;
    color: number;
    isBorder: boolean;
    material: MeshBasicMaterial;
    afterUpdate(): void;
    instancedThreeObject: any;
    _prevMeshKey: any;
    _lastColor: any;
    getBoundingSphere(): any;
}
import { Color } from 'three';
import { Vector2 } from 'three';
import { Vector4 } from 'three';
import { MeshBasicMaterial } from 'three';