import { Camera, Vector3, DirectionalLight, Material, Vector2, Object3D } from 'three'

export enum CMSMode {
  practical = 'practical',
  uniform = 'uniform',
  logarithmic = 'logarithmic',
  custom = 'custom',
}

export interface CMSParameters {
  camera?: Camera
  parent?: Object3D
  cascades?: number
  maxFar?: number
  mode?: CMSMode
  shadowMapSize?: number
  shadowBias?: number
  lightDirection?: Vector3
  lightIntensity?: number
  lightNear?: number
  lightFar?: number
  lightMargin?: number
  customSplitsCallback?: (cascades: number, cameraNear: number, cameraFar: number, breaks: number[]) => void
}

export class CSM {
  constructor(data?: CMSParameters)
  camera: Camera
  parent: Object3D
  cascades: number
  maxFar: number
  mode: CMSMode
  shadowMapSize: number
  shadowBias: number
  lightDirection: Vector3
  lightIntensity: number
  lightNear: number
  lightFar: number
  lightMargin: number
  customSplitsCallback: (cascades: number, cameraNear: number, cameraFar: number, breaks: number[]) => void
  fade: boolean
  mainFrustum: CSMFrustrum
  frustums: CSMFrustrum[]
  breaks: number[]
  lights: DirectionalLight[]
  shaders: Map<unknown, string>
  createLights(): void
  initCascades(): void
  updateShadowBounds(): void
  getBreaks(): void
  update(): void
  injectInclude(): void
  setupMaterial(material: Material): void
  updateUniforms(): void
  getExtendedBreaks(target: Vector2[]): void
  updateFrustums(): void
  remove(): void
  dispose(): void
}

import CSMFrustrum from './CSMFrustum.js'