/**
 * Base scene-graph node. Minimal phase-0 set:
 * visibility, opacity, z-order, translation, drawing, hit-test.
 */
export declare abstract class SceneNode {
    visible: boolean;
    opacity: number;
    zIndex: number;
    translationX: number;
    translationY: number;
    render(ctx: CanvasRenderingContext2D): void;
    protected abstract draw(ctx: CanvasRenderingContext2D): void;
    containsPoint(_x: number, _y: number): boolean;
}