onFocusAnim method

dynamic onFocusAnim(dynamic time, dynamic point, dynamic cameraMatrix, dynamic gizmoMatrix,)

• Perform animation for focus operation
  • @param {Number} time Instant in which this function is called as performance.now()
    • @param {Vector3} point Point of interest for focus operation
    • @param {Matrix4} cameraMatrix Camera matrix
    • @param {Matrix4} gizmoMatrix Gizmos matrix

Implementation

onFocusAnim(time, point, cameraMatrix, gizmoMatrix) {
  if (this._timeStart == -1) {
    //animation start
    this._timeStart = time;
  }

  if (this._state == STATE2.ANIMATION_FOCUS) {
    var deltaTime = time - this._timeStart;
    var animTime = deltaTime / this.focusAnimationTime;

    this._gizmoMatrixState.copy(gizmoMatrix);

    if (animTime >= 1) {
      //animation end

      this._gizmoMatrixState.decompose(
          this._gizmos.position, this._gizmos.quaternion, this._gizmos.scale);

      this.focus(point, this.scaleFactor);

      this._timeStart = -1;
      this.updateTbState(STATE2.IDLE, false);
      this.activateGizmos(false);

      this.dispatchEvent(_changeEvent);
    } else {
      var amount = this.easeOutCubic(animTime);
      var size = ((1 - amount) + (this.scaleFactor * amount));

      this._gizmoMatrixState.decompose(
          this._gizmos.position, this._gizmos.quaternion, this._gizmos.scale);
      this.focus(point, size, amount);

      this.dispatchEvent(_changeEvent);
      var self = this;
      this._animationId = requestAnimationFrame((t) {
        self.onFocusAnim(t, point, cameraMatrix, gizmoMatrix.clone());
      });
    }
  } else {
    //interrupt animation

    this._animationId = -1;
    this._timeStart = -1;
  }
}