import type { Nullable } from "../types";
import { Vector3 } from "../Maths/math.vector";
import type { Mesh } from "../Meshes/mesh";
import type { Scene } from "../scene";
import type { PhysicsImpostor } from "./v1/physicsImpostor";
import type { PhysicsBody } from "./v2/physicsBody";
/**
 * A helper for physics simulations
 * @see https://doc.babylonjs.com/features/featuresDeepDive/physics/usingPhysicsEngine#further-functionality-of-the-impostor-class
 */
export declare class PhysicsHelper {
    private _scene;
    private _physicsEngine;
    private _hitData;
    /**
     * Initializes the Physics helper
     * @param scene Babylon.js scene
     */
    constructor(scene: Scene);
    /**
     * Applies a radial explosion impulse
     * @param origin the origin of the explosion
     * @param radiusOrEventOptions the radius or the options of radial explosion
     * @param strength the explosion strength
     * @param falloff possible options: Constant & Linear. Defaults to Constant
     * @returns A physics radial explosion event, or null
     */
    applyRadialExplosionImpulse(origin: Vector3, radiusOrEventOptions: number | PhysicsRadialExplosionEventOptions, strength?: number, falloff?: PhysicsRadialImpulseFalloff): Nullable<PhysicsRadialExplosionEvent>;
    /**
     * Applies a radial explosion force
     * @param origin the origin of the explosion
     * @param radiusOrEventOptions the radius or the options of radial explosion
     * @param strength the explosion strength
     * @param falloff possible options: Constant & Linear. Defaults to Constant
     * @returns A physics radial explosion event, or null
     */
    applyRadialExplosionForce(origin: Vector3, radiusOrEventOptions: number | PhysicsRadialExplosionEventOptions, strength?: number, falloff?: PhysicsRadialImpulseFalloff): Nullable<PhysicsRadialExplosionEvent>;
    private _applicationForBodies;
    /**
     * Creates a gravitational field
     * @param origin the origin of the gravitational field
     * @param radiusOrEventOptions the radius or the options of radial gravitational field
     * @param strength the gravitational field strength
     * @param falloff possible options: Constant & Linear. Defaults to Constant
     * @returns A physics gravitational field event, or null
     */
    gravitationalField(origin: Vector3, radiusOrEventOptions: number | PhysicsRadialExplosionEventOptions, strength?: number, falloff?: PhysicsRadialImpulseFalloff): Nullable<PhysicsGravitationalFieldEvent>;
    /**
     * Creates a physics updraft event
     * @param origin the origin of the updraft
     * @param radiusOrEventOptions the radius or the options of the updraft
     * @param strength the strength of the updraft
     * @param height the height of the updraft
     * @param updraftMode possible options: Center & Perpendicular. Defaults to Center
     * @returns A physics updraft event, or null
     */
    updraft(origin: Vector3, radiusOrEventOptions: number | PhysicsUpdraftEventOptions, strength?: number, height?: number, updraftMode?: PhysicsUpdraftMode): Nullable<PhysicsUpdraftEvent>;
    /**
     * Creates a physics vortex event
     * @param origin the of the vortex
     * @param radiusOrEventOptions the radius or the options of the vortex
     * @param strength the strength of the vortex
     * @param height   the height of the vortex
     * @returns a Physics vortex event, or null
     * A physics vortex event or null
     */
    vortex(origin: Vector3, radiusOrEventOptions: number | PhysicsVortexEventOptions, strength?: number, height?: number): Nullable<PhysicsVortexEvent>;
    private _copyPhysicsHitData;
}
/**
 * Represents a physics radial explosion event
 */
declare class PhysicsRadialExplosionEvent {
    private _scene;
    private _options;
    private _sphere;
    private _dataFetched;
    /**
     * Initializes a radial explosion event
     * @param _scene BabylonJS scene
     * @param _options The options for the vortex event
     */
    constructor(_scene: Scene, _options: PhysicsRadialExplosionEventOptions);
    /**
     * Returns the data related to the radial explosion event (sphere).
     * @returns The radial explosion event data
     */
    getData(): PhysicsRadialExplosionEventData;
    private _getHitData;
    /**
     * Returns the force and contact point of the body or false, if the body is not affected by the force/impulse.
     * @param body A physics body where the transform node is an AbstractMesh
     * @param origin the origin of the explosion
     * @param data the data of the hit
     * @param instanceIndex the instance index of the body
     * @returns if there was a hit
     */
    getBodyHitData(body: PhysicsBody, origin: Vector3, data: PhysicsHitData, instanceIndex?: number): boolean;
    /**
     * Returns the force and contact point of the impostor or false, if the impostor is not affected by the force/impulse.
     * @param impostor A physics imposter
     * @param origin the origin of the explosion
     * @param data the data of the hit
     * @returns A physics force and contact point, or null
     */
    getImpostorHitData(impostor: PhysicsImpostor, origin: Vector3, data: PhysicsHitData): boolean;
    /**
     * Triggers affected impostors callbacks
     * @param affectedImpostorsWithData defines the list of affected impostors (including associated data)
     */
    triggerAffectedImpostorsCallback(affectedImpostorsWithData: Array<PhysicsAffectedImpostorWithData>): void;
    /**
     * Triggers affected bodies callbacks
     * @param affectedBodiesWithData defines the list of affected bodies (including associated data)
     */
    triggerAffectedBodiesCallback(affectedBodiesWithData: Array<PhysicsAffectedBodyWithData>): void;
    /**
     * Disposes the sphere.
     * @param force Specifies if the sphere should be disposed by force
     */
    dispose(force?: boolean): void;
    /*** Helpers ***/
    private _prepareSphere;
    private _intersectsWithSphere;
}
/**
 * Represents a gravitational field event
 */
declare class PhysicsGravitationalFieldEvent {
    private _physicsHelper;
    private _scene;
    private _origin;
    private _options;
    private _tickCallback;
    private _sphere;
    private _dataFetched;
    /**
     * Initializes the physics gravitational field event
     * @param _physicsHelper A physics helper
     * @param _scene BabylonJS scene
     * @param _origin The origin position of the gravitational field event
     * @param _options The options for the vortex event
     */
    constructor(_physicsHelper: PhysicsHelper, _scene: Scene, _origin: Vector3, _options: PhysicsRadialExplosionEventOptions);
    /**
     * Returns the data related to the gravitational field event (sphere).
     * @returns A gravitational field event
     */
    getData(): PhysicsGravitationalFieldEventData;
    /**
     * Enables the gravitational field.
     */
    enable(): void;
    /**
     * Disables the gravitational field.
     */
    disable(): void;
    /**
     * Disposes the sphere.
     * @param force The force to dispose from the gravitational field event
     */
    dispose(force?: boolean): void;
    private _tick;
}
/**
 * Represents a physics updraft event
 */
declare class PhysicsUpdraftEvent {
    private _scene;
    private _origin;
    private _options;
    private _physicsEngine;
    private _originTop;
    private _originDirection;
    private _tickCallback;
    private _cylinder;
    private _cylinderPosition;
    private _dataFetched;
    private static _HitData;
    /**
     * Initializes the physics updraft event
     * @param _scene BabylonJS scene
     * @param _origin The origin position of the updraft
     * @param _options The options for the updraft event
     */
    constructor(_scene: Scene, _origin: Vector3, _options: PhysicsUpdraftEventOptions);
    /**
     * Returns the data related to the updraft event (cylinder).
     * @returns A physics updraft event
     */
    getData(): PhysicsUpdraftEventData;
    /**
     * Enables the updraft.
     */
    enable(): void;
    /**
     * Disables the updraft.
     */
    disable(): void;
    /**
     * Disposes the cylinder.
     * @param force Specifies if the updraft should be disposed by force
     */
    dispose(force?: boolean): void;
    private _getHitData;
    private _getBodyHitData;
    private _getImpostorHitData;
    private _tick;
    /*** Helpers ***/
    private _prepareCylinder;
    private _intersectsWithCylinder;
}
/**
 * Represents a physics vortex event
 */
declare class PhysicsVortexEvent {
    private _scene;
    private _origin;
    private _options;
    private _physicsEngine;
    private _originTop;
    private _tickCallback;
    private _cylinder;
    private _cylinderPosition;
    private _dataFetched;
    private static _OriginOnPlane;
    private static _HitData;
    /**
     * Initializes the physics vortex event
     * @param _scene The BabylonJS scene
     * @param _origin The origin position of the vortex
     * @param _options The options for the vortex event
     */
    constructor(_scene: Scene, _origin: Vector3, _options: PhysicsVortexEventOptions);
    /**
     * Returns the data related to the vortex event (cylinder).
     * @returns The physics vortex event data
     */
    getData(): PhysicsVortexEventData;
    /**
     * Enables the vortex.
     */
    enable(): void;
    /**
     * Disables the cortex.
     */
    disable(): void;
    /**
     * Disposes the sphere.
     * @param force
     */
    dispose(force?: boolean): void;
    private _getHitData;
    private _getBodyHitData;
    private _getImpostorHitData;
    private _tick;
    /*** Helpers ***/
    private _prepareCylinder;
    private _intersectsWithCylinder;
}
/**
 * Options fot the radial explosion event
 * @see https://doc.babylonjs.com/features/featuresDeepDive/physics/usingPhysicsEngine#further-functionality-of-the-impostor-class
 */
export declare class PhysicsRadialExplosionEventOptions {
    /**
     * The radius of the sphere for the radial explosion.
     */
    radius: number;
    /**
     * The strength of the explosion.
     */
    strength: number;
    /**
     * The strength of the force in correspondence to the distance of the affected object
     */
    falloff: PhysicsRadialImpulseFalloff;
    /**
     * Sphere options for the radial explosion.
     */
    sphere: {
        segments: number;
        diameter: number;
    };
    /**
     * Sphere options for the radial explosion.
     */
    affectedImpostorsCallback: (affectedImpostorsWithData: Array<PhysicsAffectedImpostorWithData>) => void;
    /**
     * Sphere options for the radial explosion.
     */
    affectedBodiesCallback: (affectedBodiesWithData: Array<PhysicsAffectedBodyWithData>) => void;
}
/**
 * Options fot the updraft event
 * @see https://doc.babylonjs.com/features/featuresDeepDive/physics/usingPhysicsEngine#further-functionality-of-the-impostor-class
 */
export declare class PhysicsUpdraftEventOptions {
    /**
     * The radius of the cylinder for the vortex
     */
    radius: number;
    /**
     * The strength of the updraft.
     */
    strength: number;
    /**
     * The height of the cylinder for the updraft.
     */
    height: number;
    /**
     * The mode for the updraft.
     */
    updraftMode: PhysicsUpdraftMode;
}
/**
 * Options fot the vortex event
 * @see https://doc.babylonjs.com/features/featuresDeepDive/physics/usingPhysicsEngine#further-functionality-of-the-impostor-class
 */
export declare class PhysicsVortexEventOptions {
    /**
     * The radius of the cylinder for the vortex
     */
    radius: number;
    /**
     * The strength of the vortex.
     */
    strength: number;
    /**
     * The height of the cylinder for the vortex.
     */
    height: number;
    /**
     * At which distance, relative to the radius the centripetal forces should kick in? Range: 0-1
     */
    centripetalForceThreshold: number;
    /**
     * This multiplier determines with how much force the objects will be pushed sideways/around the vortex, when below the threshold.
     */
    centripetalForceMultiplier: number;
    /**
     * This multiplier determines with how much force the objects will be pushed sideways/around the vortex, when above the threshold.
     */
    centrifugalForceMultiplier: number;
    /**
     * This multiplier determines with how much force the objects will be pushed upwards, when in the vortex.
     */
    updraftForceMultiplier: number;
}
/**
 * The strength of the force in correspondence to the distance of the affected object
 * @see https://doc.babylonjs.com/features/featuresDeepDive/physics/usingPhysicsEngine#further-functionality-of-the-impostor-class
 */
export declare enum PhysicsRadialImpulseFalloff {
    /** Defines that impulse is constant in strength across it's whole radius */
    Constant = 0,
    /** Defines that impulse gets weaker if it's further from the origin */
    Linear = 1
}
/**
 * The strength of the force in correspondence to the distance of the affected object
 * @see https://doc.babylonjs.com/features/featuresDeepDive/physics/usingPhysicsEngine#further-functionality-of-the-impostor-class
 */
export declare enum PhysicsUpdraftMode {
    /** Defines that the upstream forces will pull towards the top center of the cylinder */
    Center = 0,
    /** Defines that once a impostor is inside the cylinder, it will shoot out perpendicular from the ground of the cylinder */
    Perpendicular = 1
}
/**
 * Interface for a physics hit data
 * @see https://doc.babylonjs.com/features/featuresDeepDive/physics/usingPhysicsEngine#further-functionality-of-the-impostor-class
 */
export interface PhysicsHitData {
    /**
     * The force applied at the contact point
     */
    force: Vector3;
    /**
     * The contact point
     */
    contactPoint: Vector3;
    /**
     * The distance from the origin to the contact point
     */
    distanceFromOrigin: number;
    /**
     * For an instanced physics body (mesh with thin instances), the index of the thin instance the hit applies to
     */
    instanceIndex?: number;
}
/**
 * Interface for radial explosion event data
 * @see https://doc.babylonjs.com/features/featuresDeepDive/physics/usingPhysicsEngine#further-functionality-of-the-impostor-class
 */
export interface PhysicsRadialExplosionEventData {
    /**
     * A sphere used for the radial explosion event
     */
    sphere: Mesh;
}
/**
 * Interface for gravitational field event data
 * @see https://doc.babylonjs.com/features/featuresDeepDive/physics/usingPhysicsEngine#further-functionality-of-the-impostor-class
 */
export interface PhysicsGravitationalFieldEventData {
    /**
     * A sphere mesh used for the gravitational field event
     */
    sphere: Mesh;
}
/**
 * Interface for updraft event data
 * @see https://doc.babylonjs.com/features/featuresDeepDive/physics/usingPhysicsEngine#further-functionality-of-the-impostor-class
 */
export interface PhysicsUpdraftEventData {
    /**
     * A cylinder used for the updraft event
     */
    cylinder?: Mesh;
}
/**
 * Interface for vortex event data
 * @see https://doc.babylonjs.com/features/featuresDeepDive/physics/usingPhysicsEngine#further-functionality-of-the-impostor-class
 */
export interface PhysicsVortexEventData {
    /**
     * A cylinder used for the vortex event
     */
    cylinder: Mesh;
}
/**
 * Interface for an affected physics impostor
 * @see https://doc.babylonjs.com/features/featuresDeepDive/physics/usingPhysicsEngine#further-functionality-of-the-impostor-class
 */
export interface PhysicsAffectedImpostorWithData {
    /**
     * The impostor affected by the effect
     */
    impostor: PhysicsImpostor;
    /**
     * The data about the hit/force from the explosion
     */
    hitData: PhysicsHitData;
}
/**
 * Interface for an affected physics body
 * @see
 */
export interface PhysicsAffectedBodyWithData {
    /**
     * The impostor affected by the effect
     */
    body: PhysicsBody;
    /**
     * The data about the hit/force from the explosion
     */
    hitData: PhysicsHitData;
}
export {};