import { Component, ContextManager, Observable } from '@zcomponent/core';
/**
 * The properties for PhysicsSettings.
 */
export interface ConstructorProps {
}
/**
 * Represents a physics settings component, used to define the physical properties of a scene in a physics simulation.
 * @zcomponent
 * @ztag three/PhysicsSettings
 * @zicon settings
 * @zgroup Physics
 * @zparents three/Object3D/Group/**
 */
export declare class PhysicsSettings extends Component {
    private _context;
    /**
     * Fixed time step (in seconds), if none provided (0), the engine will use the
     * delta time between frames.
     *
     * A good value for fixed time step is 1/60 (60 fps).
     * @zprop
     * @zdefault 0
     */
    fixedTimeStep: Observable<number, never>;
    /**
     * @zprop
     * @zdefault [0, -9.81, 0]
     */
    gravity: Observable<[number, number, number], never>;
    /**
     * Controls whether the physics simulation is running.
     * @zprop
     * @zdefault true
     */
    running: Observable<boolean, never>;
    constructor(contextManager: ContextManager, constructorProps: ConstructorProps);
    dispose(): never;
}