export interface MaterialDef {
    friction?: number;
    restitution?: number;
    damping?: number;
    angularDamping?: number;
}
export declare class Material {
    readonly friction: number;
    readonly restitution: number;
    readonly damping: number;
    readonly angularDamping: number;
    constructor(friction: number, restitution: number, damping: number, angularDamping: number);
}