{"version":3,"file":"FlyControls.cjs","sources":["../../src/controls/FlyControls.ts"],"sourcesContent":["import { Camera, Quaternion, Vector3 } from 'three'\nimport { EventDispatcher } from './EventDispatcher'\n\nfunction contextmenu(event: Event): void {\n  event.preventDefault()\n}\n\nexport interface FlyControlsEventMap {\n  /**\n   * Fires when the camera has been transformed by the controls.\n   */\n  change: {};\n}\n\nclass FlyControls extends EventDispatcher<FlyControlsEventMap> {\n  public object: Camera\n  public domElement: HTMLElement | Document = null!\n\n  public movementSpeed = 1.0\n  public rollSpeed = 0.005\n\n  public dragToLook = false\n  public autoForward = false\n\n  private changeEvent = { type: 'change' }\n  private EPS = 0.000001\n\n  private tmpQuaternion = new Quaternion()\n\n  private mouseStatus = 0\n\n  private movementSpeedMultiplier = 1\n\n  private moveState = {\n    up: 0,\n    down: 0,\n    left: 0,\n    right: 0,\n    forward: 0,\n    back: 0,\n    pitchUp: 0,\n    pitchDown: 0,\n    yawLeft: 0,\n    yawRight: 0,\n    rollLeft: 0,\n    rollRight: 0,\n  }\n  private moveVector = new Vector3(0, 0, 0)\n  private rotationVector = new Vector3(0, 0, 0)\n\n  constructor(object: Camera, domElement?: HTMLElement | Document) {\n    super()\n\n    this.object = object\n\n    // connect events\n    if (domElement !== undefined) this.connect(domElement)\n\n    this.updateMovementVector()\n    this.updateRotationVector()\n  }\n\n  private keydown = (event: KeyboardEvent): void => {\n    if (event.altKey) {\n      return\n    }\n\n    switch (event.code) {\n      case 'ShiftLeft':\n      case 'ShiftRight':\n        this.movementSpeedMultiplier = 0.1\n        break\n\n      case 'KeyW':\n        this.moveState.forward = 1\n        break\n      case 'KeyS':\n        this.moveState.back = 1\n        break\n\n      case 'KeyA':\n        this.moveState.left = 1\n        break\n      case 'KeyD':\n        this.moveState.right = 1\n        break\n\n      case 'KeyR':\n        this.moveState.up = 1\n        break\n      case 'KeyF':\n        this.moveState.down = 1\n        break\n\n      case 'ArrowUp':\n        this.moveState.pitchUp = 1\n        break\n      case 'ArrowDown':\n        this.moveState.pitchDown = 1\n        break\n\n      case 'ArrowLeft':\n        this.moveState.yawLeft = 1\n        break\n      case 'ArrowRight':\n        this.moveState.yawRight = 1\n        break\n\n      case 'KeyQ':\n        this.moveState.rollLeft = 1\n        break\n      case 'KeyE':\n        this.moveState.rollRight = 1\n        break\n    }\n\n    this.updateMovementVector()\n    this.updateRotationVector()\n  }\n\n  private keyup = (event: KeyboardEvent): void => {\n    switch (event.code) {\n      case 'ShiftLeft':\n      case 'ShiftRight':\n        this.movementSpeedMultiplier = 1\n        break\n\n      case 'KeyW':\n        this.moveState.forward = 0\n        break\n      case 'KeyS':\n        this.moveState.back = 0\n        break\n\n      case 'KeyA':\n        this.moveState.left = 0\n        break\n      case 'KeyD':\n        this.moveState.right = 0\n        break\n\n      case 'KeyR':\n        this.moveState.up = 0\n        break\n      case 'KeyF':\n        this.moveState.down = 0\n        break\n\n      case 'ArrowUp':\n        this.moveState.pitchUp = 0\n        break\n      case 'ArrowDown':\n        this.moveState.pitchDown = 0\n        break\n\n      case 'ArrowLeft':\n        this.moveState.yawLeft = 0\n        break\n      case 'ArrowRight':\n        this.moveState.yawRight = 0\n        break\n\n      case 'KeyQ':\n        this.moveState.rollLeft = 0\n        break\n      case 'KeyE':\n        this.moveState.rollRight = 0\n        break\n    }\n\n    this.updateMovementVector()\n    this.updateRotationVector()\n  }\n\n  private pointerdown = (event: MouseEvent): void => {\n    if (this.dragToLook) {\n      this.mouseStatus++\n    } else {\n      switch (event.button) {\n        case 0:\n          this.moveState.forward = 1\n          break\n        case 2:\n          this.moveState.back = 1\n          break\n      }\n\n      this.updateMovementVector()\n    }\n  }\n\n  private pointermove = (event: MouseEvent): void => {\n    if (!this.dragToLook || this.mouseStatus > 0) {\n      const container = this.getContainerDimensions()\n      const halfWidth = container.size[0] / 2\n      const halfHeight = container.size[1] / 2\n\n      this.moveState.yawLeft = -(event.pageX - container.offset[0] - halfWidth) / halfWidth\n      this.moveState.pitchDown = (event.pageY - container.offset[1] - halfHeight) / halfHeight\n\n      this.updateRotationVector()\n    }\n  }\n\n  private pointerup = (event: MouseEvent): void => {\n    if (this.dragToLook) {\n      this.mouseStatus--\n\n      this.moveState.yawLeft = this.moveState.pitchDown = 0\n    } else {\n      switch (event.button) {\n        case 0:\n          this.moveState.forward = 0\n          break\n        case 2:\n          this.moveState.back = 0\n          break\n      }\n\n      this.updateMovementVector()\n    }\n\n    this.updateRotationVector()\n  }\n\n  private lastQuaternion = new Quaternion()\n  private lastPosition = new Vector3()\n\n  public update = (delta: number): void => {\n    const moveMult = delta * this.movementSpeed\n    const rotMult = delta * this.rollSpeed\n\n    this.object.translateX(this.moveVector.x * moveMult)\n    this.object.translateY(this.moveVector.y * moveMult)\n    this.object.translateZ(this.moveVector.z * moveMult)\n\n    this.tmpQuaternion\n      .set(this.rotationVector.x * rotMult, this.rotationVector.y * rotMult, this.rotationVector.z * rotMult, 1)\n      .normalize()\n    this.object.quaternion.multiply(this.tmpQuaternion)\n\n    if (\n      this.lastPosition.distanceToSquared(this.object.position) > this.EPS ||\n      8 * (1 - this.lastQuaternion.dot(this.object.quaternion)) > this.EPS\n    ) {\n      // @ts-ignore\n      this.dispatchEvent(this.changeEvent)\n      this.lastQuaternion.copy(this.object.quaternion)\n      this.lastPosition.copy(this.object.position)\n    }\n  }\n\n  private updateMovementVector = (): void => {\n    const forward = this.moveState.forward || (this.autoForward && !this.moveState.back) ? 1 : 0\n\n    this.moveVector.x = -this.moveState.left + this.moveState.right\n    this.moveVector.y = -this.moveState.down + this.moveState.up\n    this.moveVector.z = -forward + this.moveState.back\n  }\n\n  private updateRotationVector = (): void => {\n    this.rotationVector.x = -this.moveState.pitchDown + this.moveState.pitchUp\n    this.rotationVector.y = -this.moveState.yawRight + this.moveState.yawLeft\n    this.rotationVector.z = -this.moveState.rollRight + this.moveState.rollLeft\n  }\n\n  private getContainerDimensions = (): {\n    size: number[]\n    offset: number[]\n  } => {\n    if (this.domElement != document && !(this.domElement instanceof Document)) {\n      return {\n        size: [this.domElement.offsetWidth, this.domElement.offsetHeight],\n        offset: [this.domElement.offsetLeft, this.domElement.offsetTop],\n      }\n    } else {\n      return {\n        size: [window.innerWidth, window.innerHeight],\n        offset: [0, 0],\n      }\n    }\n  }\n\n  // https://github.com/mrdoob/three.js/issues/20575\n  public connect = (domElement: HTMLElement | Document): void => {\n    this.domElement = domElement\n\n    if (!(domElement instanceof Document)) {\n      domElement.setAttribute('tabindex', -1 as any)\n    }\n\n    this.domElement.addEventListener('contextmenu', contextmenu)\n    ;(this.domElement as HTMLElement).addEventListener('pointermove', this.pointermove)\n    ;(this.domElement as HTMLElement).addEventListener('pointerdown', this.pointerdown)\n    ;(this.domElement as HTMLElement).addEventListener('pointerup', this.pointerup)\n\n    window.addEventListener('keydown', this.keydown)\n    window.addEventListener('keyup', this.keyup)\n  }\n\n  public dispose = (): void => {\n    this.domElement.removeEventListener('contextmenu', contextmenu)\n    ;(this.domElement as HTMLElement).removeEventListener('pointermove', this.pointermove)\n    ;(this.domElement as HTMLElement).removeEventListener('pointerdown', this.pointerdown)\n    ;(this.domElement as HTMLElement).removeEventListener('pointerup', this.pointerup)\n\n    window.removeEventListener('keydown', this.keydown)\n    window.removeEventListener('keyup', this.keyup)\n  }\n}\n\nexport { FlyControls 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