/*!
 * Copyright (c) Microsoft Corporation.
 * Licensed under the MIT License.
 */
import { quat, vec2, vec3 } from "gl-matrix";
export declare const LightType: {
    readonly distant: 0;
    readonly sphere: 1;
    readonly rect: 2;
    readonly disc: 3;
    readonly cylinder: 4;
    readonly dome: 5;
};
export type LightType = (typeof LightType)[keyof typeof LightType];
export declare class LightBufferData extends Float32Array {
    static readonly SIZE: number;
    readonly ROTATION_OFFSET: number;
    readonly CENTER_OFFSET: number;
    readonly TYPE_OFFSET: number;
    readonly SIZE_OFFSET: number;
    readonly COLOR_OFFSET: number;
    constructor(count: number);
    getType(index: number): number;
    setType(index: number, value: LightType): void;
    getCenter(index: number, value: vec3): void;
    setCenter(index: number, value: vec3): void;
    getSize(index: number, value: vec3): void;
    setSize(index: number, value: vec3): void;
    getColor(index: number, value: vec3): void;
    setColor(index: number, value: vec3): void;
    getRotation(index: number, value: quat): void;
    setRotation(index: number, value: quat): void;
}
export interface ILightOptions {
    color: vec3;
    center: vec3;
}
export declare abstract class Light {
    color: vec3;
    center: vec3;
    constructor(options: ILightOptions);
    toBuffer(buffer: LightBufferData, index: number): void;
}
export interface ISphereLightOptions extends ILightOptions {
    radius: number;
}
export declare class SphereLight extends Light {
    radius: number;
    constructor(options: ISphereLightOptions);
    toBuffer(buffer: LightBufferData, index: number): void;
}
export interface IRectLightOptions extends ILightOptions {
    size: vec2;
    rotation: quat;
}
export declare class RectLight extends Light {
    private readonly _thickness;
    size: vec2;
    rotation: quat;
    constructor(options: IRectLightOptions);
    toBuffer(buffer: LightBufferData, index: number): void;
}