simsite/frontend/node_modules/three-stdlib/controls/ArcballControls.js

var __defProp = Object.defineProperty;
var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value;
var __publicField = (obj, key, value) => {
  __defNormalProp(obj, typeof key !== "symbol" ? key + "" : key, value);
  return value;
};
import { Vector2, Vector3, Matrix4, Quaternion, Group, EllipseCurve, BufferGeometry, PerspectiveCamera, MathUtils, OrthographicCamera, Box3, Sphere, GridHelper, LineBasicMaterial, Line, Raycaster } from "three";
import { EventDispatcher } from "./EventDispatcher.js";
const STATE = {
  IDLE: Symbol(),
  ROTATE: Symbol(),
  PAN: Symbol(),
  SCALE: Symbol(),
  FOV: Symbol(),
  FOCUS: Symbol(),
  ZROTATE: Symbol(),
  TOUCH_MULTI: Symbol(),
  ANIMATION_FOCUS: Symbol(),
  ANIMATION_ROTATE: Symbol()
};
const INPUT = {
  NONE: Symbol(),
  ONE_FINGER: Symbol(),
  ONE_FINGER_SWITCHED: Symbol(),
  TWO_FINGER: Symbol(),
  MULT_FINGER: Symbol(),
  CURSOR: Symbol()
};
const _center = {
  x: 0,
  y: 0
};
const _transformation = {
  camera: /* @__PURE__ */ new Matrix4(),
  gizmos: /* @__PURE__ */ new Matrix4()
};
const _changeEvent = { type: "change" };
const _startEvent = { type: "start" };
const _endEvent = { type: "end" };
class ArcballControls extends EventDispatcher {
  constructor(camera, domElement = null, scene = null) {
    super();
    __publicField(this, "camera");
    __publicField(this, "domElement");
    __publicField(this, "scene");
    __publicField(this, "mouseActions");
    __publicField(this, "_mouseOp");
    __publicField(this, "_v2_1");
    __publicField(this, "_v3_1");
    __publicField(this, "_v3_2");
    __publicField(this, "_m4_1");
    __publicField(this, "_m4_2");
    __publicField(this, "_quat");
    __publicField(this, "_translationMatrix");
    __publicField(this, "_rotationMatrix");
    __publicField(this, "_scaleMatrix");
    __publicField(this, "_rotationAxis");
    __publicField(this, "_cameraMatrixState");
    __publicField(this, "_cameraProjectionState");
    __publicField(this, "_fovState");
    __publicField(this, "_upState");
    __publicField(this, "_zoomState");
    __publicField(this, "_nearPos");
    __publicField(this, "_farPos");
    __publicField(this, "_gizmoMatrixState");
    __publicField(this, "_up0");
    __publicField(this, "_zoom0");
    __publicField(this, "_fov0");
    __publicField(this, "_initialNear");
    __publicField(this, "_nearPos0");
    __publicField(this, "_initialFar");
    __publicField(this, "_farPos0");
    __publicField(this, "_cameraMatrixState0");
    __publicField(this, "_gizmoMatrixState0");
    __publicField(this, "_button");
    __publicField(this, "_touchStart");
    __publicField(this, "_touchCurrent");
    __publicField(this, "_input");
    __publicField(this, "_switchSensibility");
    __publicField(this, "_startFingerDistance");
    __publicField(this, "_currentFingerDistance");
    __publicField(this, "_startFingerRotation");
    __publicField(this, "_currentFingerRotation");
    __publicField(this, "_devPxRatio");
    __publicField(this, "_downValid");
    __publicField(this, "_nclicks");
    __publicField(this, "_downEvents");
    __publicField(this, "_clickStart");
    __publicField(this, "_maxDownTime");
    __publicField(this, "_maxInterval");
    __publicField(this, "_posThreshold");
    __publicField(this, "_movementThreshold");
    __publicField(this, "_currentCursorPosition");
    __publicField(this, "_startCursorPosition");
    __publicField(this, "_grid");
    __publicField(this, "_gridPosition");
    __publicField(this, "_gizmos");
    __publicField(this, "_curvePts");
    __publicField(this, "_timeStart");
    __publicField(this, "_animationId");
    __publicField(this, "focusAnimationTime");
    __publicField(this, "_timePrev");
    __publicField(this, "_timeCurrent");
    __publicField(this, "_anglePrev");
    __publicField(this, "_angleCurrent");
    __publicField(this, "_cursorPosPrev");
    __publicField(this, "_cursorPosCurr");
    __publicField(this, "_wPrev");
    __publicField(this, "_wCurr");
    __publicField(this, "adjustNearFar");
    __publicField(this, "scaleFactor");
    __publicField(this, "dampingFactor");
    __publicField(this, "wMax");
    __publicField(this, "enableAnimations");
    __publicField(this, "enableGrid");
    __publicField(this, "cursorZoom");
    __publicField(this, "minFov");
    __publicField(this, "maxFov");
    __publicField(this, "enabled");
    __publicField(this, "enablePan");
    __publicField(this, "enableRotate");
    __publicField(this, "enableZoom");
    __publicField(this, "minDistance");
    __publicField(this, "maxDistance");
    __publicField(this, "minZoom");
    __publicField(this, "maxZoom");
    __publicField(this, "target");
    __publicField(this, "_currentTarget");
    __publicField(this, "_tbRadius");
    __publicField(this, "_state");
    //listeners
    __publicField(this, "onWindowResize", () => {
      const scale = (this._gizmos.scale.x + this._gizmos.scale.y + this._gizmos.scale.z) / 3;
      if (this.camera) {
        const tbRadius = this.calculateTbRadius(this.camera);
        if (tbRadius !== void 0) {
          this._tbRadius = tbRadius;
        }
      }
      const newRadius = this._tbRadius / scale;
      const curve = new EllipseCurve(0, 0, newRadius, newRadius);
      const points = curve.getPoints(this._curvePts);
      const curveGeometry = new BufferGeometry().setFromPoints(points);
      for (const gizmo in this._gizmos.children) {
        const child = this._gizmos.children[gizmo];
        child.geometry = curveGeometry;
      }
      this.dispatchEvent(_changeEvent);
    });
    __publicField(this, "onContextMenu", (event) => {
      if (!this.enabled) {
        return;
      }
      for (let i = 0; i < this.mouseActions.length; i++) {
        if (this.mouseActions[i].mouse == 2) {
          event.preventDefault();
          break;
        }
      }
    });
    __publicField(this, "onPointerCancel", () => {
      this._touchStart.splice(0, this._touchStart.length);
      this._touchCurrent.splice(0, this._touchCurrent.length);
      this._input = INPUT.NONE;
    });
    __publicField(this, "onPointerDown", (event) => {
      if (event.button == 0 && event.isPrimary) {
        this._downValid = true;
        this._downEvents.push(event);
      } else {
        this._downValid = false;
      }
      if (event.pointerType == "touch" && this._input != INPUT.CURSOR) {
        this._touchStart.push(event);
        this._touchCurrent.push(event);
        switch (this._input) {
          case INPUT.NONE:
            this._input = INPUT.ONE_FINGER;
            this.onSinglePanStart(event, "ROTATE");
            window.addEventListener("pointermove", this.onPointerMove);
            window.addEventListener("pointerup", this.onPointerUp);
            break;
          case INPUT.ONE_FINGER:
          case INPUT.ONE_FINGER_SWITCHED:
            this._input = INPUT.TWO_FINGER;
            this.onRotateStart();
            this.onPinchStart();
            this.onDoublePanStart();
            break;
          case INPUT.TWO_FINGER:
            this._input = INPUT.MULT_FINGER;
            this.onTriplePanStart();
            break;
        }
      } else if (event.pointerType != "touch" && this._input == INPUT.NONE) {
        let modifier = null;
        if (event.ctrlKey || event.metaKey) {
          modifier = "CTRL";
        } else if (event.shiftKey) {
          modifier = "SHIFT";
        }
        this._mouseOp = this.getOpFromAction(event.button, modifier);
        if (this._mouseOp) {
          window.addEventListener("pointermove", this.onPointerMove);
          window.addEventListener("pointerup", this.onPointerUp);
          this._input = INPUT.CURSOR;
          this._button = event.button;
          this.onSinglePanStart(event, this._mouseOp);
        }
      }
    });
    __publicField(this, "onPointerMove", (event) => {
      if (event.pointerType == "touch" && this._input != INPUT.CURSOR) {
        switch (this._input) {
          case INPUT.ONE_FINGER:
            this.updateTouchEvent(event);
            this.onSinglePanMove(event, STATE.ROTATE);
            break;
          case INPUT.ONE_FINGER_SWITCHED:
            const movement = this.calculatePointersDistance(this._touchCurrent[0], event) * this._devPxRatio;
            if (movement >= this._switchSensibility) {
              this._input = INPUT.ONE_FINGER;
              this.updateTouchEvent(event);
              this.onSinglePanStart(event, "ROTATE");
              break;
            }
            break;
          case INPUT.TWO_FINGER:
            this.updateTouchEvent(event);
            this.onRotateMove();
            this.onPinchMove();
            this.onDoublePanMove();
            break;
          case INPUT.MULT_FINGER:
            this.updateTouchEvent(event);
            this.onTriplePanMove();
            break;
        }
      } else if (event.pointerType != "touch" && this._input == INPUT.CURSOR) {
        let modifier = null;
        if (event.ctrlKey || event.metaKey) {
          modifier = "CTRL";
        } else if (event.shiftKey) {
          modifier = "SHIFT";
        }
        const mouseOpState = this.getOpStateFromAction(this._button, modifier);
        if (mouseOpState) {
          this.onSinglePanMove(event, mouseOpState);
        }
      }
      if (this._downValid) {
        const movement = this.calculatePointersDistance(this._downEvents[this._downEvents.length - 1], event) * this._devPxRatio;
        if (movement > this._movementThreshold) {
          this._downValid = false;
        }
      }
    });
    __publicField(this, "onPointerUp", (event) => {
      if (event.pointerType == "touch" && this._input != INPUT.CURSOR) {
        const nTouch = this._touchCurrent.length;
        for (let i = 0; i < nTouch; i++) {
          if (this._touchCurrent[i].pointerId == event.pointerId) {
            this._touchCurrent.splice(i, 1);
            this._touchStart.splice(i, 1);
            break;
          }
        }
        switch (this._input) {
          case INPUT.ONE_FINGER:
          case INPUT.ONE_FINGER_SWITCHED:
            window.removeEventListener("pointermove", this.onPointerMove);
            window.removeEventListener("pointerup", this.onPointerUp);
            this._input = INPUT.NONE;
            this.onSinglePanEnd();
            break;
          case INPUT.TWO_FINGER:
            this.onDoublePanEnd();
            this.onPinchEnd();
            this.onRotateEnd();
            this._input = INPUT.ONE_FINGER_SWITCHED;
            break;
          case INPUT.MULT_FINGER:
            if (this._touchCurrent.length == 0) {
              window.removeEventListener("pointermove", this.onPointerMove);
              window.removeEventListener("pointerup", this.onPointerUp);
              this._input = INPUT.NONE;
              this.onTriplePanEnd();
            }
            break;
        }
      } else if (event.pointerType != "touch" && this._input == INPUT.CURSOR) {
        window.removeEventListener("pointermove", this.onPointerMove);
        window.removeEventListener("pointerup", this.onPointerUp);
        this._input = INPUT.NONE;
        this.onSinglePanEnd();
        this._button = -1;
      }
      if (event.isPrimary) {
        if (this._downValid) {
          const downTime = event.timeStamp - this._downEvents[this._downEvents.length - 1].timeStamp;
          if (downTime <= this._maxDownTime) {
            if (this._nclicks == 0) {
              this._nclicks = 1;
              this._clickStart = performance.now();
            } else {
              const clickInterval = event.timeStamp - this._clickStart;
              const movement = this.calculatePointersDistance(this._downEvents[1], this._downEvents[0]) * this._devPxRatio;
              if (clickInterval <= this._maxInterval && movement <= this._posThreshold) {
                this._nclicks = 0;
                this._downEvents.splice(0, this._downEvents.length);
                this.onDoubleTap(event);
              } else {
                this._nclicks = 1;
                this._downEvents.shift();
                this._clickStart = performance.now();
              }
            }
          } else {
            this._downValid = false;
            this._nclicks = 0;
            this._downEvents.splice(0, this._downEvents.length);
          }
        } else {
          this._nclicks = 0;
          this._downEvents.splice(0, this._downEvents.length);
        }
      }
    });
    __publicField(this, "onWheel", (event) => {
      var _a, _b;
      if (this.enabled && this.enableZoom && this.domElement) {
        let modifier = null;
        if (event.ctrlKey || event.metaKey) {
          modifier = "CTRL";
        } else if (event.shiftKey) {
          modifier = "SHIFT";
        }
        const mouseOp = this.getOpFromAction("WHEEL", modifier);
        if (mouseOp) {
          event.preventDefault();
          this.dispatchEvent(_startEvent);
          const notchDeltaY = 125;
          let sgn = event.deltaY / notchDeltaY;
          let size = 1;
          if (sgn > 0) {
            size = 1 / this.scaleFactor;
          } else if (sgn < 0) {
            size = this.scaleFactor;
          }
          switch (mouseOp) {
            case "ZOOM":
              this.updateTbState(STATE.SCALE, true);
              if (sgn > 0) {
                size = 1 / Math.pow(this.scaleFactor, sgn);
              } else if (sgn < 0) {
                size = Math.pow(this.scaleFactor, -sgn);
              }
              if (this.cursorZoom && this.enablePan) {
                let scalePoint;
                if (this.camera instanceof OrthographicCamera) {
                  scalePoint = (_a = this.unprojectOnTbPlane(this.camera, event.clientX, event.clientY, this.domElement)) == null ? void 0 : _a.applyQuaternion(this.camera.quaternion).multiplyScalar(1 / this.camera.zoom).add(this._gizmos.position);
                }
                if (this.camera instanceof PerspectiveCamera) {
                  scalePoint = (_b = this.unprojectOnTbPlane(this.camera, event.clientX, event.clientY, this.domElement)) == null ? void 0 : _b.applyQuaternion(this.camera.quaternion).add(this._gizmos.position);
                }
                if (scalePoint !== void 0)
                  this.applyTransformMatrix(this.applyScale(size, scalePoint));
              } else {
                this.applyTransformMatrix(this.applyScale(size, this._gizmos.position));
              }
              if (this._grid) {
                this.disposeGrid();
                this.drawGrid();
              }
              this.updateTbState(STATE.IDLE, false);
              this.dispatchEvent(_changeEvent);
              this.dispatchEvent(_endEvent);
              break;
            case "FOV":
              if (this.camera instanceof PerspectiveCamera) {
                this.updateTbState(STATE.FOV, true);
                if (event.deltaX != 0) {
                  sgn = event.deltaX / notchDeltaY;
                  size = 1;
                  if (sgn > 0) {
                    size = 1 / Math.pow(this.scaleFactor, sgn);
                  } else if (sgn < 0) {
                    size = Math.pow(this.scaleFactor, -sgn);
                  }
                }
                this._v3_1.setFromMatrixPosition(this._cameraMatrixState);
                const x = this._v3_1.distanceTo(this._gizmos.position);
                let xNew = x / size;
                xNew = MathUtils.clamp(xNew, this.minDistance, this.maxDistance);
                const y = x * Math.tan(MathUtils.DEG2RAD * this.camera.fov * 0.5);
                let newFov = MathUtils.RAD2DEG * (Math.atan(y / xNew) * 2);
                if (newFov > this.maxFov) {
                  newFov = this.maxFov;
                } else if (newFov < this.minFov) {
                  newFov = this.minFov;
                }
                const newDistance = y / Math.tan(MathUtils.DEG2RAD * (newFov / 2));
                size = x / newDistance;
                this.setFov(newFov);
                this.applyTransformMatrix(this.applyScale(size, this._gizmos.position, false));
              }
              if (this._grid) {
                this.disposeGrid();
                this.drawGrid();
              }
              this.updateTbState(STATE.IDLE, false);
              this.dispatchEvent(_changeEvent);
              this.dispatchEvent(_endEvent);
              break;
          }
        }
      }
    });
    __publicField(this, "onSinglePanStart", (event, operation) => {
      if (this.enabled && this.domElement) {
        this.dispatchEvent(_startEvent);
        this.setCenter(event.clientX, event.clientY);
        switch (operation) {
          case "PAN":
            if (!this.enablePan)
              return;
            if (this._animationId != -1) {
              cancelAnimationFrame(this._animationId);
              this._animationId = -1;
              this._timeStart = -1;
              this.activateGizmos(false);
              this.dispatchEvent(_changeEvent);
            }
            if (this.camera) {
              this.updateTbState(STATE.PAN, true);
              const rayDir = this.unprojectOnTbPlane(this.camera, _center.x, _center.y, this.domElement);
              if (rayDir !== void 0) {
                this._startCursorPosition.copy(rayDir);
              }
              if (this.enableGrid) {
                this.drawGrid();
                this.dispatchEvent(_changeEvent);
              }
            }
            break;
          case "ROTATE":
            if (!this.enableRotate)
              return;
            if (this._animationId != -1) {
              cancelAnimationFrame(this._animationId);
              this._animationId = -1;
              this._timeStart = -1;
            }
            if (this.camera) {
              this.updateTbState(STATE.ROTATE, true);
              const rayDir = this.unprojectOnTbSurface(this.camera, _center.x, _center.y, this.domElement, this._tbRadius);
              if (rayDir !== void 0) {
                this._startCursorPosition.copy(rayDir);
              }
              this.activateGizmos(true);
              if (this.enableAnimations) {
                this._timePrev = this._timeCurrent = performance.now();
                this._angleCurrent = this._anglePrev = 0;
                this._cursorPosPrev.copy(this._startCursorPosition);
                this._cursorPosCurr.copy(this._cursorPosPrev);
                this._wCurr = 0;
                this._wPrev = this._wCurr;
              }
            }
            this.dispatchEvent(_changeEvent);
            break;
          case "FOV":
            if (!this.enableZoom)
              return;
            if (this.camera instanceof PerspectiveCamera) {
              if (this._animationId != -1) {
                cancelAnimationFrame(this._animationId);
                this._animationId = -1;
                this._timeStart = -1;
                this.activateGizmos(false);
                this.dispatchEvent(_changeEvent);
              }
              this.updateTbState(STATE.FOV, true);
              this._startCursorPosition.setY(this.getCursorNDC(_center.x, _center.y, this.domElement).y * 0.5);
              this._currentCursorPosition.copy(this._startCursorPosition);
            }
            break;
          case "ZOOM":
            if (!this.enableZoom)
              return;
            if (this._animationId != -1) {
              cancelAnimationFrame(this._animationId);
              this._animationId = -1;
              this._timeStart = -1;
              this.activateGizmos(false);
              this.dispatchEvent(_changeEvent);
            }
            this.updateTbState(STATE.SCALE, true);
            this._startCursorPosition.setY(this.getCursorNDC(_center.x, _center.y, this.domElement).y * 0.5);
            this._currentCursorPosition.copy(this._startCursorPosition);
            break;
        }
      }
    });
    __publicField(this, "onSinglePanMove", (event, opState) => {
      if (this.enabled && this.domElement) {
        const restart = opState != this._state;
        this.setCenter(event.clientX, event.clientY);
        switch (opState) {
          case STATE.PAN:
            if (this.enablePan && this.camera) {
              if (restart) {
                this.dispatchEvent(_endEvent);
                this.dispatchEvent(_startEvent);
                this.updateTbState(opState, true);
                const rayDir = this.unprojectOnTbPlane(this.camera, _center.x, _center.y, this.domElement);
                if (rayDir !== void 0) {
                  this._startCursorPosition.copy(rayDir);
                }
                if (this.enableGrid) {
                  this.drawGrid();
                }
                this.activateGizmos(false);
              } else {
                const rayDir = this.unprojectOnTbPlane(this.camera, _center.x, _center.y, this.domElement);
                if (rayDir !== void 0) {
                  this._currentCursorPosition.copy(rayDir);
                }
                this.applyTransformMatrix(this.pan(this._startCursorPosition, this._currentCursorPosition));
              }
            }
            break;
          case STATE.ROTATE:
            if (this.enableRotate && this.camera) {
              if (restart) {
                this.dispatchEvent(_endEvent);
                this.dispatchEvent(_startEvent);
                this.updateTbState(opState, true);
                const rayDir = this.unprojectOnTbSurface(
                  this.camera,
                  _center.x,
                  _center.y,
                  this.domElement,
                  this._tbRadius
                );
                if (rayDir !== void 0) {
                  this._startCursorPosition.copy(rayDir);
                }
                if (this.enableGrid) {
                  this.disposeGrid();
                }
                this.activateGizmos(true);
              } else {
                const rayDir = this.unprojectOnTbSurface(
                  this.camera,
                  _center.x,
                  _center.y,
                  this.domElement,
                  this._tbRadius
                );
                if (rayDir !== void 0) {
                  this._currentCursorPosition.copy(rayDir);
                }
                const distance = this._startCursorPosition.distanceTo(this._currentCursorPosition);
                const angle = this._startCursorPosition.angleTo(this._currentCursorPosition);
                const amount = Math.max(distance / this._tbRadius, angle);
                this.applyTransformMatrix(
                  this.rotate(this.calculateRotationAxis(this._startCursorPosition, this._currentCursorPosition), amount)
                );
                if (this.enableAnimations) {
                  this._timePrev = this._timeCurrent;
                  this._timeCurrent = performance.now();
                  this._anglePrev = this._angleCurrent;
                  this._angleCurrent = amount;
                  this._cursorPosPrev.copy(this._cursorPosCurr);
                  this._cursorPosCurr.copy(this._currentCursorPosition);
                  this._wPrev = this._wCurr;
                  this._wCurr = this.calculateAngularSpeed(
                    this._anglePrev,
                    this._angleCurrent,
                    this._timePrev,
                    this._timeCurrent
                  );
                }
              }
            }
            break;
          case STATE.SCALE:
            if (this.enableZoom) {
              if (restart) {
                this.dispatchEvent(_endEvent);
                this.dispatchEvent(_startEvent);
                this.updateTbState(opState, true);
                this._startCursorPosition.setY(this.getCursorNDC(_center.x, _center.y, this.domElement).y * 0.5);
                this._currentCursorPosition.copy(this._startCursorPosition);
                if (this.enableGrid) {
                  this.disposeGrid();
                }
                this.activateGizmos(false);
              } else {
                const screenNotches = 8;
                this._currentCursorPosition.setY(this.getCursorNDC(_center.x, _center.y, this.domElement).y * 0.5);
                const movement = this._currentCursorPosition.y - this._startCursorPosition.y;
                let size = 1;
                if (movement < 0) {
                  size = 1 / Math.pow(this.scaleFactor, -movement * screenNotches);
                } else if (movement > 0) {
                  size = Math.pow(this.scaleFactor, movement * screenNotches);
                }
                this.applyTransformMatrix(this.applyScale(size, this._gizmos.position));
              }
            }
            break;
          case STATE.FOV:
            if (this.enableZoom && this.camera instanceof PerspectiveCamera) {
              if (restart) {
                this.dispatchEvent(_endEvent);
                this.dispatchEvent(_startEvent);
                this.updateTbState(opState, true);
                this._startCursorPosition.setY(this.getCursorNDC(_center.x, _center.y, this.domElement).y * 0.5);
                this._currentCursorPosition.copy(this._startCursorPosition);
                if (this.enableGrid) {
                  this.disposeGrid();
                }
                this.activateGizmos(false);
              } else {
                const screenNotches = 8;
                this._currentCursorPosition.setY(this.getCursorNDC(_center.x, _center.y, this.domElement).y * 0.5);
                const movement = this._currentCursorPosition.y - this._startCursorPosition.y;
                let size = 1;
                if (movement < 0) {
                  size = 1 / Math.pow(this.scaleFactor, -movement * screenNotches);
                } else if (movement > 0) {
                  size = Math.pow(this.scaleFactor, movement * screenNotches);
                }
                this._v3_1.setFromMatrixPosition(this._cameraMatrixState);
                const x = this._v3_1.distanceTo(this._gizmos.position);
                let xNew = x / size;
                xNew = MathUtils.clamp(xNew, this.minDistance, this.maxDistance);
                const y = x * Math.tan(MathUtils.DEG2RAD * this._fovState * 0.5);
                let newFov = MathUtils.RAD2DEG * (Math.atan(y / xNew) * 2);
                newFov = MathUtils.clamp(newFov, this.minFov, this.maxFov);
                const newDistance = y / Math.tan(MathUtils.DEG2RAD * (newFov / 2));
                size = x / newDistance;
                this._v3_2.setFromMatrixPosition(this._gizmoMatrixState);
                this.setFov(newFov);
                this.applyTransformMatrix(this.applyScale(size, this._v3_2, false));
                const direction = this._gizmos.position.clone().sub(this.camera.position).normalize().multiplyScalar(newDistance / x);
                this._m4_1.makeTranslation(direction.x, direction.y, direction.z);
              }
            }
            break;
        }
        this.dispatchEvent(_changeEvent);
      }
    });
    __publicField(this, "onSinglePanEnd", () => {
      if (this._state == STATE.ROTATE) {
        if (!this.enableRotate) {
          return;
        }
        if (this.enableAnimations) {
          const deltaTime = performance.now() - this._timeCurrent;
          if (deltaTime < 120) {
            const w = Math.abs((this._wPrev + this._wCurr) / 2);
            const self = this;
            this._animationId = window.requestAnimationFrame(function(t) {
              self.updateTbState(STATE.ANIMATION_ROTATE, true);
              const rotationAxis = self.calculateRotationAxis(self._cursorPosPrev, self._cursorPosCurr);
              self.onRotationAnim(t, rotationAxis, Math.min(w, self.wMax));
            });
          } else {
            this.updateTbState(STATE.IDLE, false);
            this.activateGizmos(false);
            this.dispatchEvent(_changeEvent);
          }
        } else {
          this.updateTbState(STATE.IDLE, false);
          this.activateGizmos(false);
          this.dispatchEvent(_changeEvent);
        }
      } else if (this._state == STATE.PAN || this._state == STATE.IDLE) {
        this.updateTbState(STATE.IDLE, false);
        if (this.enableGrid) {
          this.disposeGrid();
        }
        this.activateGizmos(false);
        this.dispatchEvent(_changeEvent);
      }
      this.dispatchEvent(_endEvent);
    });
    __publicField(this, "onDoubleTap", (event) => {
      if (this.enabled && this.enablePan && this.scene && this.camera && this.domElement) {
        this.dispatchEvent(_startEvent);
        this.setCenter(event.clientX, event.clientY);
        const hitP = this.unprojectOnObj(this.getCursorNDC(_center.x, _center.y, this.domElement), this.camera);
        if (hitP && this.enableAnimations) {
          const self = this;
          if (this._animationId != -1) {
            window.cancelAnimationFrame(this._animationId);
          }
          this._timeStart = -1;
          this._animationId = window.requestAnimationFrame(function(t) {
            self.updateTbState(STATE.ANIMATION_FOCUS, true);
            self.onFocusAnim(t, hitP, self._cameraMatrixState, self._gizmoMatrixState);
          });
        } else if (hitP && !this.enableAnimations) {
          this.updateTbState(STATE.FOCUS, true);
          this.focus(hitP, this.scaleFactor);
          this.updateTbState(STATE.IDLE, false);
          this.dispatchEvent(_changeEvent);
        }
      }
      this.dispatchEvent(_endEvent);
    });
    __publicField(this, "onDoublePanStart", () => {
      if (this.enabled && this.enablePan && this.camera && this.domElement) {
        this.dispatchEvent(_startEvent);
        this.updateTbState(STATE.PAN, true);
        this.setCenter(
          (this._touchCurrent[0].clientX + this._touchCurrent[1].clientX) / 2,
          (this._touchCurrent[0].clientY + this._touchCurrent[1].clientY) / 2
        );
        const rayDir = this.unprojectOnTbPlane(this.camera, _center.x, _center.y, this.domElement, true);
        if (rayDir !== void 0) {
          this._startCursorPosition.copy(rayDir);
        }
        this._currentCursorPosition.copy(this._startCursorPosition);
        this.activateGizmos(false);
      }
    });
    __publicField(this, "onDoublePanMove", () => {
      if (this.enabled && this.enablePan && this.camera && this.domElement) {
        this.setCenter(
          (this._touchCurrent[0].clientX + this._touchCurrent[1].clientX) / 2,
          (this._touchCurrent[0].clientY + this._touchCurrent[1].clientY) / 2
        );
        if (this._state != STATE.PAN) {
          this.updateTbState(STATE.PAN, true);
          this._startCursorPosition.copy(this._currentCursorPosition);
        }
        const rayDir = this.unprojectOnTbPlane(this.camera, _center.x, _center.y, this.domElement, true);
        if (rayDir !== void 0)
          this._currentCursorPosition.copy(rayDir);
        this.applyTransformMatrix(this.pan(this._startCursorPosition, this._currentCursorPosition, true));
        this.dispatchEvent(_changeEvent);
      }
    });
    __publicField(this, "onDoublePanEnd", () => {
      this.updateTbState(STATE.IDLE, false);
      this.dispatchEvent(_endEvent);
    });
    __publicField(this, "onRotateStart", () => {
      var _a;
      if (this.enabled && this.enableRotate) {
        this.dispatchEvent(_startEvent);
        this.updateTbState(STATE.ZROTATE, true);
        this._startFingerRotation = this.getAngle(this._touchCurrent[1], this._touchCurrent[0]) + this.getAngle(this._touchStart[1], this._touchStart[0]);
        this._currentFingerRotation = this._startFingerRotation;
        (_a = this.camera) == null ? void 0 : _a.getWorldDirection(this._rotationAxis);
        if (!this.enablePan && !this.enableZoom) {
          this.activateGizmos(true);
        }
      }
    });
    __publicField(this, "onRotateMove", () => {
      var _a;
      if (this.enabled && this.enableRotate && this.camera && this.domElement) {
        this.setCenter(
          (this._touchCurrent[0].clientX + this._touchCurrent[1].clientX) / 2,
          (this._touchCurrent[0].clientY + this._touchCurrent[1].clientY) / 2
        );
        let rotationPoint;
        if (this._state != STATE.ZROTATE) {
          this.updateTbState(STATE.ZROTATE, true);
          this._startFingerRotation = this._currentFingerRotation;
        }
        this._currentFingerRotation = this.getAngle(this._touchCurrent[1], this._touchCurrent[0]) + this.getAngle(this._touchStart[1], this._touchStart[0]);
        if (!this.enablePan) {
          rotationPoint = new Vector3().setFromMatrixPosition(this._gizmoMatrixState);
        } else if (this.camera) {
          this._v3_2.setFromMatrixPosition(this._gizmoMatrixState);
          rotationPoint = (_a = this.unprojectOnTbPlane(this.camera, _center.x, _center.y, this.domElement)) == null ? void 0 : _a.applyQuaternion(this.camera.quaternion).multiplyScalar(1 / this.camera.zoom).add(this._v3_2);
        }
        const amount = MathUtils.DEG2RAD * (this._startFingerRotation - this._currentFingerRotation);
        if (rotationPoint !== void 0) {
          this.applyTransformMatrix(this.zRotate(rotationPoint, amount));
        }
        this.dispatchEvent(_changeEvent);
      }
    });
    __publicField(this, "onRotateEnd", () => {
      this.updateTbState(STATE.IDLE, false);
      this.activateGizmos(false);
      this.dispatchEvent(_endEvent);
    });
    __publicField(this, "onPinchStart", () => {
      if (this.enabled && this.enableZoom) {
        this.dispatchEvent(_startEvent);
        this.updateTbState(STATE.SCALE, true);
        this._startFingerDistance = this.calculatePointersDistance(this._touchCurrent[0], this._touchCurrent[1]);
        this._currentFingerDistance = this._startFingerDistance;
        this.activateGizmos(false);
      }
    });
    __publicField(this, "onPinchMove", () => {
      var _a, _b;
      if (this.enabled && this.enableZoom && this.domElement) {
        this.setCenter(
          (this._touchCurrent[0].clientX + this._touchCurrent[1].clientX) / 2,
          (this._touchCurrent[0].clientY + this._touchCurrent[1].clientY) / 2
        );
        const minDistance = 12;
        if (this._state != STATE.SCALE) {
          this._startFingerDistance = this._currentFingerDistance;
          this.updateTbState(STATE.SCALE, true);
        }
        this._currentFingerDistance = Math.max(
          this.calculatePointersDistance(this._touchCurrent[0], this._touchCurrent[1]),
          minDistance * this._devPxRatio
        );
        const amount = this._currentFingerDistance / this._startFingerDistance;
        let scalePoint;
        if (!this.enablePan) {
          scalePoint = this._gizmos.position;
        } else {
          if (this.camera instanceof OrthographicCamera) {
            scalePoint = (_a = this.unprojectOnTbPlane(this.camera, _center.x, _center.y, this.domElement)) == null ? void 0 : _a.applyQuaternion(this.camera.quaternion).multiplyScalar(1 / this.camera.zoom).add(this._gizmos.position);
          } else if (this.camera instanceof PerspectiveCamera) {
            scalePoint = (_b = this.unprojectOnTbPlane(this.camera, _center.x, _center.y, this.domElement)) == null ? void 0 : _b.applyQuaternion(this.camera.quaternion).add(this._gizmos.position);
          }
        }
        if (scalePoint !== void 0) {
          this.applyTransformMatrix(this.applyScale(amount, scalePoint));
        }
        this.dispatchEvent(_changeEvent);
      }
    });
    __publicField(this, "onPinchEnd", () => {
      this.updateTbState(STATE.IDLE, false);
      this.dispatchEvent(_endEvent);
    });
    __publicField(this, "onTriplePanStart", () => {
      if (this.enabled && this.enableZoom && this.domElement) {
        this.dispatchEvent(_startEvent);
        this.updateTbState(STATE.SCALE, true);
        let clientX = 0;
        let clientY = 0;
        const nFingers = this._touchCurrent.length;
        for (let i = 0; i < nFingers; i++) {
          clientX += this._touchCurrent[i].clientX;
          clientY += this._touchCurrent[i].clientY;
        }
        this.setCenter(clientX / nFingers, clientY / nFingers);
        this._startCursorPosition.setY(this.getCursorNDC(_center.x, _center.y, this.domElement).y * 0.5);
        this._currentCursorPosition.copy(this._startCursorPosition);
      }
    });
    __publicField(this, "onTriplePanMove", () => {
      if (this.enabled && this.enableZoom && this.camera && this.domElement) {
        let clientX = 0;
        let clientY = 0;
        const nFingers = this._touchCurrent.length;
        for (let i = 0; i < nFingers; i++) {
          clientX += this._touchCurrent[i].clientX;
          clientY += this._touchCurrent[i].clientY;
        }
        this.setCenter(clientX / nFingers, clientY / nFingers);
        const screenNotches = 8;
        this._currentCursorPosition.setY(this.getCursorNDC(_center.x, _center.y, this.domElement).y * 0.5);
        const movement = this._currentCursorPosition.y - this._startCursorPosition.y;
        let size = 1;
        if (movement < 0) {
          size = 1 / Math.pow(this.scaleFactor, -movement * screenNotches);
        } else if (movement > 0) {
          size = Math.pow(this.scaleFactor, movement * screenNotches);
        }
        this._v3_1.setFromMatrixPosition(this._cameraMatrixState);
        const x = this._v3_1.distanceTo(this._gizmos.position);
        let xNew = x / size;
        xNew = MathUtils.clamp(xNew, this.minDistance, this.maxDistance);
        const y = x * Math.tan(MathUtils.DEG2RAD * this._fovState * 0.5);
        let newFov = MathUtils.RAD2DEG * (Math.atan(y / xNew) * 2);
        newFov = MathUtils.clamp(newFov, this.minFov, this.maxFov);
        const newDistance = y / Math.tan(MathUtils.DEG2RAD * (newFov / 2));
        size = x / newDistance;
        this._v3_2.setFromMatrixPosition(this._gizmoMatrixState);
        this.setFov(newFov);
        this.applyTransformMatrix(this.applyScale(size, this._v3_2, false));
        const direction = this._gizmos.position.clone().sub(this.camera.position).normalize().multiplyScalar(newDistance / x);
        this._m4_1.makeTranslation(direction.x, direction.y, direction.z);
        this.dispatchEvent(_changeEvent);
      }
    });
    __publicField(this, "onTriplePanEnd", () => {
      this.updateTbState(STATE.IDLE, false);
      this.dispatchEvent(_endEvent);
    });
    /**
     * Set _center's x/y coordinates
     * @param {Number} clientX
     * @param {Number} clientY
     */
    __publicField(this, "setCenter", (clientX, clientY) => {
      _center.x = clientX;
      _center.y = clientY;
    });
    /**
     * Set default mouse actions
     */
    __publicField(this, "initializeMouseActions", () => {
      this.setMouseAction("PAN", 0, "CTRL");
      this.setMouseAction("PAN", 2);
      this.setMouseAction("ROTATE", 0);
      this.setMouseAction("ZOOM", "WHEEL");
      this.setMouseAction("ZOOM", 1);
      this.setMouseAction("FOV", "WHEEL", "SHIFT");
      this.setMouseAction("FOV", 1, "SHIFT");
    });
    /**
     * Set a new mouse action by specifying the operation to be performed and a mouse/key combination. In case of conflict, replaces the existing one
     * @param {String} operation The operation to be performed ('PAN', 'ROTATE', 'ZOOM', 'FOV)
     * @param {*} mouse A mouse button (0, 1, 2) or 'WHEEL' for wheel notches
     * @param {*} key The keyboard modifier ('CTRL', 'SHIFT') or null if key is not needed
     * @returns {Boolean} True if the mouse action has been successfully added, false otherwise
     */
    __publicField(this, "setMouseAction", (operation, mouse, key = null) => {
      const operationInput = ["PAN", "ROTATE", "ZOOM", "FOV"];
      const mouseInput = [0, 1, 2, "WHEEL"];
      const keyInput = ["CTRL", "SHIFT", null];
      let state;
      if (!operationInput.includes(operation) || !mouseInput.includes(mouse) || !keyInput.includes(key)) {
        return false;
      }
      if (mouse == "WHEEL") {
        if (operation != "ZOOM" && operation != "FOV") {
          return false;
        }
      }
      switch (operation) {
        case "PAN":
          state = STATE.PAN;
          break;
        case "ROTATE":
          state = STATE.ROTATE;
          break;
        case "ZOOM":
          state = STATE.SCALE;
          break;
        case "FOV":
          state = STATE.FOV;
          break;
      }
      const action = {
        operation,
        mouse,
        key,
        state
      };
      for (let i = 0; i < this.mouseActions.length; i++) {
        if (this.mouseActions[i].mouse == action.mouse && this.mouseActions[i].key == action.key) {
          this.mouseActions.splice(i, 1, action);
          return true;
        }
      }
      this.mouseActions.push(action);
      return true;
    });
    /**
     * Return the operation associated to a mouse/keyboard combination
     * @param {*} mouse A mouse button (0, 1, 2) or 'WHEEL' for wheel notches
     * @param {*} key The keyboard modifier ('CTRL', 'SHIFT') or null if key is not needed
     * @returns The operation if it has been found, null otherwise
     */
    __publicField(this, "getOpFromAction", (mouse, key) => {
      let action;
      for (let i = 0; i < this.mouseActions.length; i++) {
        action = this.mouseActions[i];
        if (action.mouse == mouse && action.key == key) {
          return action.operation;
        }
      }
      if (key) {
        for (let i = 0; i < this.mouseActions.length; i++) {
          action = this.mouseActions[i];
          if (action.mouse == mouse && action.key == null) {
            return action.operation;
          }
        }
      }
      return null;
    });
    /**
     * Get the operation associated to mouse and key combination and returns the corresponding FSA state
     * @param {Number} mouse Mouse button
     * @param {String} key Keyboard modifier
     * @returns The FSA state obtained from the operation associated to mouse/keyboard combination
     */
    __publicField(this, "getOpStateFromAction", (mouse, key) => {
      let action;
      for (let i = 0; i < this.mouseActions.length; i++) {
        action = this.mouseActions[i];
        if (action.mouse == mouse && action.key == key) {
          return action.state;
        }
      }
      if (key) {
        for (let i = 0; i < this.mouseActions.length; i++) {
          action = this.mouseActions[i];
          if (action.mouse == mouse && action.key == null) {
            return action.state;
          }
        }
      }
      return null;
    });
    /**
     * Calculate the angle between two pointers
     * @param {PointerEvent} p1
     * @param {PointerEvent} p2
     * @returns {Number} The angle between two pointers in degrees
     */
    __publicField(this, "getAngle", (p1, p2) => {
      return Math.atan2(p2.clientY - p1.clientY, p2.clientX - p1.clientX) * 180 / Math.PI;
    });
    /**
     * Update a PointerEvent inside current pointerevents array
     * @param {PointerEvent} event
     */
    __publicField(this, "updateTouchEvent", (event) => {
      for (let i = 0; i < this._touchCurrent.length; i++) {
        if (this._touchCurrent[i].pointerId == event.pointerId) {
          this._touchCurrent.splice(i, 1, event);
          break;
        }
      }
    });
    /**
     * Calculate the angular speed
     * @param {Number} p0 Position at t0
     * @param {Number} p1 Position at t1
     * @param {Number} t0 Initial time in milliseconds
     * @param {Number} t1 Ending time in milliseconds
     */
    __publicField(this, "calculateAngularSpeed", (p0, p1, t0, t1) => {
      const s = p1 - p0;
      const t = (t1 - t0) / 1e3;
      if (t == 0) {
        return 0;
      }
      return s / t;
    });
    /**
     * Calculate the distance between two pointers
     * @param {PointerEvent} p0 The first pointer
     * @param {PointerEvent} p1 The second pointer
     * @returns {number} The distance between the two pointers
     */
    __publicField(this, "calculatePointersDistance", (p0, p1) => {
      return Math.sqrt(Math.pow(p1.clientX - p0.clientX, 2) + Math.pow(p1.clientY - p0.clientY, 2));
    });
    /**
     * Calculate the rotation axis as the vector perpendicular between two vectors
     * @param {Vector3} vec1 The first vector
     * @param {Vector3} vec2 The second vector
     * @returns {Vector3} The normalized rotation axis
     */
    __publicField(this, "calculateRotationAxis", (vec1, vec2) => {
      this._rotationMatrix.extractRotation(this._cameraMatrixState);
      this._quat.setFromRotationMatrix(this._rotationMatrix);
      this._rotationAxis.crossVectors(vec1, vec2).applyQuaternion(this._quat);
      return this._rotationAxis.normalize().clone();
    });
    /**
     * Calculate the trackball radius so that gizmo's diamater will be 2/3 of the minimum side of the camera frustum
     * @param {Camera} camera
     * @returns {Number} The trackball radius
     */
    __publicField(this, "calculateTbRadius", (camera) => {
      const factor = 0.67;
      const distance = camera.position.distanceTo(this._gizmos.position);
      if (camera instanceof PerspectiveCamera) {
        const halfFovV = MathUtils.DEG2RAD * camera.fov * 0.5;
        const halfFovH = Math.atan(camera.aspect * Math.tan(halfFovV));
        return Math.tan(Math.min(halfFovV, halfFovH)) * distance * factor;
      } else if (camera instanceof OrthographicCamera) {
        return Math.min(camera.top, camera.right) * factor;
      }
    });
    /**
     * Focus operation consist of positioning the point of interest in front of the camera and a slightly zoom in
     * @param {Vector3} point The point of interest
     * @param {Number} size Scale factor
     * @param {Number} amount Amount of operation to be completed (used for focus animations, default is complete full operation)
     */
    __publicField(this, "focus", (point, size, amount = 1) => {
      if (this.camera) {
        const focusPoint = point.clone();
        focusPoint.sub(this._gizmos.position).multiplyScalar(amount);
        this._translationMatrix.makeTranslation(focusPoint.x, focusPoint.y, focusPoint.z);
        const gizmoStateTemp = this._gizmoMatrixState.clone();
        this._gizmoMatrixState.premultiply(this._translationMatrix);
        this._gizmoMatrixState.decompose(this._gizmos.position, this._gizmos.quaternion, this._gizmos.scale);
        const cameraStateTemp = this._cameraMatrixState.clone();
        this._cameraMatrixState.premultiply(this._translationMatrix);
        this._cameraMatrixState.decompose(this.camera.position, this.camera.quaternion, this.camera.scale);
        if (this.enableZoom) {
          this.applyTransformMatrix(this.applyScale(size, this._gizmos.position));
        }
        this._gizmoMatrixState.copy(gizmoStateTemp);
        this._cameraMatrixState.copy(cameraStateTemp);
      }
    });
    /**
     * Draw a grid and add it to the scene
     */
    __publicField(this, "drawGrid", () => {
      if (this.scene) {
        const color = 8947848;
        const multiplier = 3;
        let size, divisions, maxLength, tick;
        if (this.camera instanceof OrthographicCamera) {
          const width = this.camera.right - this.camera.left;
          const height = this.camera.bottom - this.camera.top;
          maxLength = Math.max(width, height);
          tick = maxLength / 20;
          size = maxLength / this.camera.zoom * multiplier;
          divisions = size / tick * this.camera.zoom;
        } else if (this.camera instanceof PerspectiveCamera) {
          const distance = this.camera.position.distanceTo(this._gizmos.position);
          const halfFovV = MathUtils.DEG2RAD * this.camera.fov * 0.5;
          const halfFovH = Math.atan(this.camera.aspect * Math.tan(halfFovV));
          maxLength = Math.tan(Math.max(halfFovV, halfFovH)) * distance * 2;
          tick = maxLength / 20;
          size = maxLength * multiplier;
          divisions = size / tick;
        }
        if (this._grid == null && this.camera) {
          this._grid = new GridHelper(size, divisions, color, color);
          this._grid.position.copy(this._gizmos.position);
          this._gridPosition.copy(this._grid.position);
          this._grid.quaternion.copy(this.camera.quaternion);
          this._grid.rotateX(Math.PI * 0.5);
          this.scene.add(this._grid);
        }
      }
    });
    __publicField(this, "connect", (domElement) => {
      if (domElement === document) {
        console.error(
          'THREE.ArcballControls: "document" should not be used as the target "domElement". Please use "renderer.domElement" instead.'
        );
      }
      this.domElement = domElement;
      this.domElement.style.touchAction = "none";
      this.domElement.addEventListener("contextmenu", this.onContextMenu);
      this.domElement.addEventListener("pointerdown", this.onPointerDown);
      this.domElement.addEventListener("pointercancel", this.onPointerCancel);
      this.domElement.addEventListener("wheel", this.onWheel);
    });
    /**
     * Remove all listeners, stop animations and clean scene
     */
    __publicField(this, "dispose", () => {
      var _a, _b, _c, _d, _e;
      if (this._animationId != -1) {
        window.cancelAnimationFrame(this._animationId);
      }
      (_a = this.domElement) == null ? void 0 : _a.removeEventListener("pointerdown", this.onPointerDown);
      (_b = this.domElement) == null ? void 0 : _b.removeEventListener("pointercancel", this.onPointerCancel);
      (_c = this.domElement) == null ? void 0 : _c.removeEventListener("wheel", this.onWheel);
      (_d = this.domElement) == null ? void 0 : _d.removeEventListener("contextmenu", this.onContextMenu);
      window.removeEventListener("pointermove", this.onPointerMove);
      window.removeEventListener("pointerup", this.onPointerUp);
      window.removeEventListener("resize", this.onWindowResize);
      (_e = this.scene) == null ? void 0 : _e.remove(this._gizmos);
      this.disposeGrid();
    });
    /**
     * remove the grid from the scene
     */
    __publicField(this, "disposeGrid", () => {
      if (this._grid && this.scene) {
        this.scene.remove(this._grid);
        this._grid = null;
      }
    });
    /**
     * Compute the easing out cubic function for ease out effect in animation
     * @param {Number} t The absolute progress of the animation in the bound of 0 (beginning of the) and 1 (ending of animation)
     * @returns {Number} Result of easing out cubic at time t
     */
    __publicField(this, "easeOutCubic", (t) => {
      return 1 - Math.pow(1 - t, 3);
    });
    /**
     * Make rotation gizmos more or less visible
     * @param {Boolean} isActive If true, make gizmos more visible
     */
    __publicField(this, "activateGizmos", (isActive) => {
      for (const gizmo of this._gizmos.children) {
        gizmo.material.setValues({ opacity: isActive ? 1 : 0.6 });
      }
    });
    /**
     * Calculate the cursor position in NDC
     * @param {number} x Cursor horizontal coordinate within the canvas
     * @param {number} y Cursor vertical coordinate within the canvas
     * @param {HTMLElement} canvas The canvas where the renderer draws its output
     * @returns {Vector2} Cursor normalized position inside the canvas
     */
    __publicField(this, "getCursorNDC", (cursorX, cursorY, canvas) => {
      const canvasRect = canvas.getBoundingClientRect();
      this._v2_1.setX((cursorX - canvasRect.left) / canvasRect.width * 2 - 1);
      this._v2_1.setY((canvasRect.bottom - cursorY) / canvasRect.height * 2 - 1);
      return this._v2_1.clone();
    });
    /**
     * Calculate the cursor position inside the canvas x/y coordinates with the origin being in the center of the canvas
     * @param {Number} x Cursor horizontal coordinate within the canvas
     * @param {Number} y Cursor vertical coordinate within the canvas
     * @param {HTMLElement} canvas The canvas where the renderer draws its output
     * @returns {Vector2} Cursor position inside the canvas
     */
    __publicField(this, "getCursorPosition", (cursorX, cursorY, canvas) => {
      this._v2_1.copy(this.getCursorNDC(cursorX, cursorY, canvas));
      if (this.camera instanceof OrthographicCamera) {
        this._v2_1.x *= (this.camera.right - this.camera.left) * 0.5;
        this._v2_1.y *= (this.camera.top - this.camera.bottom) * 0.5;
      }
      return this._v2_1.clone();
    });
    /**
     * Set the camera to be controlled
     * @param {Camera} camera The virtual camera to be controlled
     */
    __publicField(this, "setCamera", (camera) => {
      if (camera) {
        camera.lookAt(this.target);
        camera.updateMatrix();
        if (camera instanceof PerspectiveCamera) {
          this._fov0 = camera.fov;
          this._fovState = camera.fov;
        }
        this._cameraMatrixState0.copy(camera.matrix);
        this._cameraMatrixState.copy(this._cameraMatrixState0);
        this._cameraProjectionState.copy(camera.projectionMatrix);
        this._zoom0 = camera.zoom;
        this._zoomState = this._zoom0;
        this._initialNear = camera.near;
        this._nearPos0 = camera.position.distanceTo(this.target) - camera.near;
        this._nearPos = this._initialNear;
        this._initialFar = camera.far;
        this._farPos0 = camera.position.distanceTo(this.target) - camera.far;
        this._farPos = this._initialFar;
        this._up0.copy(camera.up);
        this._upState.copy(camera.up);
        this.camera = camera;
        this.camera.updateProjectionMatrix();
        const tbRadius = this.calculateTbRadius(camera);
        if (tbRadius !== void 0) {
          this._tbRadius = tbRadius;
        }
        this.makeGizmos(this.target, this._tbRadius);
      }
    });
    /**
     * Creates the rotation gizmos matching trackball center and radius
     * @param {Vector3} tbCenter The trackball center
     * @param {number} tbRadius The trackball radius
     */
    __publicField(this, "makeGizmos", (tbCenter, tbRadius) => {
      const curve = new EllipseCurve(0, 0, tbRadius, tbRadius);
      const points = curve.getPoints(this._curvePts);
      const curveGeometry = new BufferGeometry().setFromPoints(points);
      const curveMaterialX = new LineBasicMaterial({ color: 16744576, fog: false, transparent: true, opacity: 0.6 });
      const curveMaterialY = new LineBasicMaterial({ color: 8454016, fog: false, transparent: true, opacity: 0.6 });
      const curveMaterialZ = new LineBasicMaterial({ color: 8421631, fog: false, transparent: true, opacity: 0.6 });
      const gizmoX = new Line(curveGeometry, curveMaterialX);
      const gizmoY = new Line(curveGeometry, curveMaterialY);
      const gizmoZ = new Line(curveGeometry, curveMaterialZ);
      const rotation = Math.PI * 0.5;
      gizmoX.rotation.x = rotation;
      gizmoY.rotation.y = rotation;
      this._gizmoMatrixState0.identity().setPosition(tbCenter);
      this._gizmoMatrixState.copy(this._gizmoMatrixState0);
      if (this.camera && this.camera.zoom != 1) {
        const size = 1 / this.camera.zoom;
        this._scaleMatrix.makeScale(size, size, size);
        this._translationMatrix.makeTranslation(-tbCenter.x, -tbCenter.y, -tbCenter.z);
        this._gizmoMatrixState.premultiply(this._translationMatrix).premultiply(this._scaleMatrix);
        this._translationMatrix.makeTranslation(tbCenter.x, tbCenter.y, tbCenter.z);
        this._gizmoMatrixState.premultiply(this._translationMatrix);
      }
      this._gizmoMatrixState.decompose(this._gizmos.position, this._gizmos.quaternion, this._gizmos.scale);
      this._gizmos.clear();
      this._gizmos.add(gizmoX);
      this._gizmos.add(gizmoY);
      this._gizmos.add(gizmoZ);
    });
    /**
     * 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
     */
    __publicField(this, "onFocusAnim", (time, point, cameraMatrix, gizmoMatrix) => {
      if (this._timeStart == -1) {
        this._timeStart = time;
      }
      if (this._state == STATE.ANIMATION_FOCUS) {
        const deltaTime = time - this._timeStart;
        const animTime = deltaTime / this.focusAnimationTime;
        this._gizmoMatrixState.copy(gizmoMatrix);
        if (animTime >= 1) {
          this._gizmoMatrixState.decompose(this._gizmos.position, this._gizmos.quaternion, this._gizmos.scale);
          this.focus(point, this.scaleFactor);
          this._timeStart = -1;
          this.updateTbState(STATE.IDLE, false);
          this.activateGizmos(false);
          this.dispatchEvent(_changeEvent);
        } else {
          const amount = this.easeOutCubic(animTime);
          const 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);
          const self = this;
          this._animationId = window.requestAnimationFrame(function(t) {
            self.onFocusAnim(t, point, cameraMatrix, gizmoMatrix.clone());
          });
        }
      } else {
        this._animationId = -1;
        this._timeStart = -1;
      }
    });
    /**
     * Perform animation for rotation operation
     * @param {Number} time Instant in which this function is called as performance.now()
     * @param {Vector3} rotationAxis Rotation axis
     * @param {number} w0 Initial angular velocity
     */
    __publicField(this, "onRotationAnim", (time, rotationAxis, w0) => {
      if (this._timeStart == -1) {
        this._anglePrev = 0;
        this._angleCurrent = 0;
        this._timeStart = time;
      }
      if (this._state == STATE.ANIMATION_ROTATE) {
        const deltaTime = (time - this._timeStart) / 1e3;
        const w = w0 + -this.dampingFactor * deltaTime;
        if (w > 0) {
          this._angleCurrent = 0.5 * -this.dampingFactor * Math.pow(deltaTime, 2) + w0 * deltaTime + 0;
          this.applyTransformMatrix(this.rotate(rotationAxis, this._angleCurrent));
          this.dispatchEvent(_changeEvent);
          const self = this;
          this._animationId = window.requestAnimationFrame(function(t) {
            self.onRotationAnim(t, rotationAxis, w0);
          });
        } else {
          this._animationId = -1;
          this._timeStart = -1;
          this.updateTbState(STATE.IDLE, false);
          this.activateGizmos(false);
          this.dispatchEvent(_changeEvent);
        }
      } else {
        this._animationId = -1;
        this._timeStart = -1;
        if (this._state != STATE.ROTATE) {
          this.activateGizmos(false);
          this.dispatchEvent(_changeEvent);
        }
      }
    });
    /**
     * Perform pan operation moving camera between two points
     * @param {Vector3} p0 Initial point
     * @param {Vector3} p1 Ending point
     * @param {Boolean} adjust If movement should be adjusted considering camera distance (Perspective only)
     */
    __publicField(this, "pan", (p0, p1, adjust = false) => {
      if (this.camera) {
        const movement = p0.clone().sub(p1);
        if (this.camera instanceof OrthographicCamera) {
          movement.multiplyScalar(1 / this.camera.zoom);
        }
        if (this.camera instanceof PerspectiveCamera && adjust) {
          this._v3_1.setFromMatrixPosition(this._cameraMatrixState0);
          this._v3_2.setFromMatrixPosition(this._gizmoMatrixState0);
          const distanceFactor = this._v3_1.distanceTo(this._v3_2) / this.camera.position.distanceTo(this._gizmos.position);
          movement.multiplyScalar(1 / distanceFactor);
        }
        this._v3_1.set(movement.x, movement.y, 0).applyQuaternion(this.camera.quaternion);
        this._m4_1.makeTranslation(this._v3_1.x, this._v3_1.y, this._v3_1.z);
        this.setTransformationMatrices(this._m4_1, this._m4_1);
      }
      return _transformation;
    });
    /**
     * Reset trackball
     */
    __publicField(this, "reset", () => {
      if (this.camera) {
        this.camera.zoom = this._zoom0;
        if (this.camera instanceof PerspectiveCamera) {
          this.camera.fov = this._fov0;
        }
        this.camera.near = this._nearPos;
        this.camera.far = this._farPos;
        this._cameraMatrixState.copy(this._cameraMatrixState0);
        this._cameraMatrixState.decompose(this.camera.position, this.camera.quaternion, this.camera.scale);
        this.camera.up.copy(this._up0);
        this.camera.updateMatrix();
        this.camera.updateProjectionMatrix();
        this._gizmoMatrixState.copy(this._gizmoMatrixState0);
        this._gizmoMatrixState0.decompose(this._gizmos.position, this._gizmos.quaternion, this._gizmos.scale);
        this._gizmos.updateMatrix();
        const tbRadius = this.calculateTbRadius(this.camera);
        if (tbRadius !== void 0) {
          this._tbRadius = tbRadius;
        }
        this.makeGizmos(this._gizmos.position, this._tbRadius);
        this.camera.lookAt(this._gizmos.position);
        this.updateTbState(STATE.IDLE, false);
        this.dispatchEvent(_changeEvent);
      }
    });
    /**
     * Rotate the camera around an axis passing by trackball's center
     * @param {Vector3} axis Rotation axis
     * @param {number} angle Angle in radians
     * @returns {Object} Object with 'camera' field containing transformation matrix resulting from the operation to be applied to the camera
     */
    __publicField(this, "rotate", (axis, angle) => {
      const point = this._gizmos.position;
      this._translationMatrix.makeTranslation(-point.x, -point.y, -point.z);
      this._rotationMatrix.makeRotationAxis(axis, -angle);
      this._m4_1.makeTranslation(point.x, point.y, point.z);
      this._m4_1.multiply(this._rotationMatrix);
      this._m4_1.multiply(this._translationMatrix);
      this.setTransformationMatrices(this._m4_1);
      return _transformation;
    });
    __publicField(this, "copyState", () => {
      if (this.camera) {
        const state = JSON.stringify(
          this.camera instanceof OrthographicCamera ? {
            arcballState: {
              cameraFar: this.camera.far,
              cameraMatrix: this.camera.matrix,
              cameraNear: this.camera.near,
              cameraUp: this.camera.up,
              cameraZoom: this.camera.zoom,
              gizmoMatrix: this._gizmos.matrix
            }
          } : {
            arcballState: {
              cameraFar: this.camera.far,
              cameraFov: this.camera.fov,
              cameraMatrix: this.camera.matrix,
              cameraNear: this.camera.near,
              cameraUp: this.camera.up,
              cameraZoom: this.camera.zoom,
              gizmoMatrix: this._gizmos.matrix
            }
          }
        );
        navigator.clipboard.writeText(state);
      }
    });
    __publicField(this, "pasteState", () => {
      const self = this;
      navigator.clipboard.readText().then(function resolved(value) {
        self.setStateFromJSON(value);
      });
    });
    /**
     * Save the current state of the control. This can later be recovered with .reset
     */
    __publicField(this, "saveState", () => {
      if (!this.camera)
        return;
      this._cameraMatrixState0.copy(this.camera.matrix);
      this._gizmoMatrixState0.copy(this._gizmos.matrix);
      this._nearPos = this.camera.near;
      this._farPos = this.camera.far;
      this._zoom0 = this.camera.zoom;
      this._up0.copy(this.camera.up);
      if (this.camera instanceof PerspectiveCamera) {
        this._fov0 = this.camera.fov;
      }
    });
    /**
     * Perform uniform scale operation around a given point
     * @param {Number} size Scale factor
     * @param {Vector3} point Point around which scale
     * @param {Boolean} scaleGizmos If gizmos should be scaled (Perspective only)
     * @returns {Object} Object with 'camera' and 'gizmo' fields containing transformation matrices resulting from the operation to be applied to the camera and gizmos
     */
    __publicField(this, "applyScale", (size, point, scaleGizmos = true) => {
      if (!this.camera)
        return;
      const scalePoint = point.clone();
      let sizeInverse = 1 / size;
      if (this.camera instanceof OrthographicCamera) {
        this.camera.zoom = this._zoomState;
        this.camera.zoom *= size;
        if (this.camera.zoom > this.maxZoom) {
          this.camera.zoom = this.maxZoom;
          sizeInverse = this._zoomState / this.maxZoom;
        } else if (this.camera.zoom < this.minZoom) {
          this.camera.zoom = this.minZoom;
          sizeInverse = this._zoomState / this.minZoom;
        }
        this.camera.updateProjectionMatrix();
        this._v3_1.setFromMatrixPosition(this._gizmoMatrixState);
        this._scaleMatrix.makeScale(sizeInverse, sizeInverse, sizeInverse);
        this._translationMatrix.makeTranslation(-this._v3_1.x, -this._v3_1.y, -this._v3_1.z);
        this._m4_2.makeTranslation(this._v3_1.x, this._v3_1.y, this._v3_1.z).multiply(this._scaleMatrix);
        this._m4_2.multiply(this._translationMatrix);
        scalePoint.sub(this._v3_1);
        const amount = scalePoint.clone().multiplyScalar(sizeInverse);
        scalePoint.sub(amount);
        this._m4_1.makeTranslation(scalePoint.x, scalePoint.y, scalePoint.z);
        this._m4_2.premultiply(this._m4_1);
        this.setTransformationMatrices(this._m4_1, this._m4_2);
        return _transformation;
      }
      if (this.camera instanceof PerspectiveCamera) {
        this._v3_1.setFromMatrixPosition(this._cameraMatrixState);
        this._v3_2.setFromMatrixPosition(this._gizmoMatrixState);
        let distance = this._v3_1.distanceTo(scalePoint);
        let amount = distance - distance * sizeInverse;
        const newDistance = distance - amount;
        if (newDistance < this.minDistance) {
          sizeInverse = this.minDistance / distance;
          amount = distance - distance * sizeInverse;
        } else if (newDistance > this.maxDistance) {
          sizeInverse = this.maxDistance / distance;
          amount = distance - distance * sizeInverse;
        }
        let direction = scalePoint.clone().sub(this._v3_1).normalize().multiplyScalar(amount);
        this._m4_1.makeTranslation(direction.x, direction.y, direction.z);
        if (scaleGizmos) {
          const pos = this._v3_2;
          distance = pos.distanceTo(scalePoint);
          amount = distance - distance * sizeInverse;
          direction = scalePoint.clone().sub(this._v3_2).normalize().multiplyScalar(amount);
          this._translationMatrix.makeTranslation(pos.x, pos.y, pos.z);
          this._scaleMatrix.makeScale(sizeInverse, sizeInverse, sizeInverse);
          this._m4_2.makeTranslation(direction.x, direction.y, direction.z).multiply(this._translationMatrix);
          this._m4_2.multiply(this._scaleMatrix);
          this._translationMatrix.makeTranslation(-pos.x, -pos.y, -pos.z);
          this._m4_2.multiply(this._translationMatrix);
          this.setTransformationMatrices(this._m4_1, this._m4_2);
        } else {
          this.setTransformationMatrices(this._m4_1);
        }
        return _transformation;
      }
    });
    /**
     * Set camera fov
     * @param {Number} value fov to be setted
     */
    __publicField(this, "setFov", (value) => {
      if (this.camera instanceof PerspectiveCamera) {
        this.camera.fov = MathUtils.clamp(value, this.minFov, this.maxFov);
        this.camera.updateProjectionMatrix();
      }
    });
    /**
     * Set the trackball's center point
     * @param {Number} x X coordinate
     * @param {Number} y Y coordinate
     * @param {Number} z Z coordinate
     */
    __publicField(this, "setTarget", (x, y, z) => {
      if (this.camera) {
        this.target.set(x, y, z);
        this._gizmos.position.set(x, y, z);
        const tbRadius = this.calculateTbRadius(this.camera);
        if (tbRadius !== void 0) {
          this._tbRadius = tbRadius;
        }
        this.makeGizmos(this.target, this._tbRadius);
        this.camera.lookAt(this.target);
      }
    });
    /**
     * Rotate camera around its direction axis passing by a given point by a given angle
     * @param {Vector3} point The point where the rotation axis is passing trough
     * @param {Number} angle Angle in radians
     * @returns The computed transormation matix
     */
    __publicField(this, "zRotate", (point, angle) => {
      this._rotationMatrix.makeRotationAxis(this._rotationAxis, angle);
      this._translationMatrix.makeTranslation(-point.x, -point.y, -point.z);
      this._m4_1.makeTranslation(point.x, point.y, point.z);
      this._m4_1.multiply(this._rotationMatrix);
      this._m4_1.multiply(this._translationMatrix);
      this._v3_1.setFromMatrixPosition(this._gizmoMatrixState).sub(point);
      this._v3_2.copy(this._v3_1).applyAxisAngle(this._rotationAxis, angle);
      this._v3_2.sub(this._v3_1);
      this._m4_2.makeTranslation(this._v3_2.x, this._v3_2.y, this._v3_2.z);
      this.setTransformationMatrices(this._m4_1, this._m4_2);
      return _transformation;
    });
    /**
     * Unproject the cursor on the 3D object surface
     * @param {Vector2} cursor Cursor coordinates in NDC
     * @param {Camera} camera Virtual camera
     * @returns {Vector3} The point of intersection with the model, if exist, null otherwise
     */
    __publicField(this, "unprojectOnObj", (cursor, camera) => {
      if (!this.scene)
        return null;
      const raycaster = new Raycaster();
      raycaster.near = camera.near;
      raycaster.far = camera.far;
      raycaster.setFromCamera(cursor, camera);
      const intersect = raycaster.intersectObjects(this.scene.children, true);
      for (let i = 0; i < intersect.length; i++) {
        if (intersect[i].object.uuid != this._gizmos.uuid && intersect[i].face) {
          return intersect[i].point.clone();
        }
      }
      return null;
    });
    /**
     * Unproject the cursor on the trackball surface
     * @param {Camera} camera The virtual camera
     * @param {Number} cursorX Cursor horizontal coordinate on screen
     * @param {Number} cursorY Cursor vertical coordinate on screen
     * @param {HTMLElement} canvas The canvas where the renderer draws its output
     * @param {number} tbRadius The trackball radius
     * @returns {Vector3} The unprojected point on the trackball surface
     */
    __publicField(this, "unprojectOnTbSurface", (camera, cursorX, cursorY, canvas, tbRadius) => {
      if (camera instanceof OrthographicCamera) {
        this._v2_1.copy(this.getCursorPosition(cursorX, cursorY, canvas));
        this._v3_1.set(this._v2_1.x, this._v2_1.y, 0);
        const x2 = Math.pow(this._v2_1.x, 2);
        const y2 = Math.pow(this._v2_1.y, 2);
        const r2 = Math.pow(this._tbRadius, 2);
        if (x2 + y2 <= r2 * 0.5) {
          this._v3_1.setZ(Math.sqrt(r2 - (x2 + y2)));
        } else {
          this._v3_1.setZ(r2 * 0.5 / Math.sqrt(x2 + y2));
        }
        return this._v3_1;
      }
      if (camera instanceof PerspectiveCamera) {
        this._v2_1.copy(this.getCursorNDC(cursorX, cursorY, canvas));
        this._v3_1.set(this._v2_1.x, this._v2_1.y, -1);
        this._v3_1.applyMatrix4(camera.projectionMatrixInverse);
        const rayDir = this._v3_1.clone().normalize();
        const cameraGizmoDistance = camera.position.distanceTo(this._gizmos.position);
        const radius2 = Math.pow(tbRadius, 2);
        const h = this._v3_1.z;
        const l = Math.sqrt(Math.pow(this._v3_1.x, 2) + Math.pow(this._v3_1.y, 2));
        if (l == 0) {
          rayDir.set(this._v3_1.x, this._v3_1.y, tbRadius);
          return rayDir;
        }
        const m = h / l;
        const q = cameraGizmoDistance;
        let a = Math.pow(m, 2) + 1;
        let b = 2 * m * q;
        let c = Math.pow(q, 2) - radius2;
        let delta = Math.pow(b, 2) - 4 * a * c;
        if (delta >= 0) {
          this._v2_1.setX((-b - Math.sqrt(delta)) / (2 * a));
          this._v2_1.setY(m * this._v2_1.x + q);
          const angle = MathUtils.RAD2DEG * this._v2_1.angle();
          if (angle >= 45) {
            const rayLength2 = Math.sqrt(Math.pow(this._v2_1.x, 2) + Math.pow(cameraGizmoDistance - this._v2_1.y, 2));
            rayDir.multiplyScalar(rayLength2);
            rayDir.z += cameraGizmoDistance;
            return rayDir;
          }
        }
        a = m;
        b = q;
        c = -radius2 * 0.5;
        delta = Math.pow(b, 2) - 4 * a * c;
        this._v2_1.setX((-b - Math.sqrt(delta)) / (2 * a));
        this._v2_1.setY(m * this._v2_1.x + q);
        const rayLength = Math.sqrt(Math.pow(this._v2_1.x, 2) + Math.pow(cameraGizmoDistance - this._v2_1.y, 2));
        rayDir.multiplyScalar(rayLength);
        rayDir.z += cameraGizmoDistance;
        return rayDir;
      }
    });
    /**
     * Unproject the cursor on the plane passing through the center of the trackball orthogonal to the camera
     * @param {Camera} camera The virtual camera
     * @param {Number} cursorX Cursor horizontal coordinate on screen
     * @param {Number} cursorY Cursor vertical coordinate on screen
     * @param {HTMLElement} canvas The canvas where the renderer draws its output
     * @param {Boolean} initialDistance If initial distance between camera and gizmos should be used for calculations instead of current (Perspective only)
     * @returns {Vector3} The unprojected point on the trackball plane
     */
    __publicField(this, "unprojectOnTbPlane", (camera, cursorX, cursorY, canvas, initialDistance = false) => {
      if (camera instanceof OrthographicCamera) {
        this._v2_1.copy(this.getCursorPosition(cursorX, cursorY, canvas));
        this._v3_1.set(this._v2_1.x, this._v2_1.y, 0);
        return this._v3_1.clone();
      }
      if (camera instanceof PerspectiveCamera) {
        this._v2_1.copy(this.getCursorNDC(cursorX, cursorY, canvas));
        this._v3_1.set(this._v2_1.x, this._v2_1.y, -1);
        this._v3_1.applyMatrix4(camera.projectionMatrixInverse);
        const rayDir = this._v3_1.clone().normalize();
        const h = this._v3_1.z;
        const l = Math.sqrt(Math.pow(this._v3_1.x, 2) + Math.pow(this._v3_1.y, 2));
        let cameraGizmoDistance;
        if (initialDistance) {
          cameraGizmoDistance = this._v3_1.setFromMatrixPosition(this._cameraMatrixState0).distanceTo(this._v3_2.setFromMatrixPosition(this._gizmoMatrixState0));
        } else {
          cameraGizmoDistance = camera.position.distanceTo(this._gizmos.position);
        }
        if (l == 0) {
          rayDir.set(0, 0, 0);
          return rayDir;
        }
        const m = h / l;
        const q = cameraGizmoDistance;
        const x = -q / m;
        const rayLength = Math.sqrt(Math.pow(q, 2) + Math.pow(x, 2));
        rayDir.multiplyScalar(rayLength);
        rayDir.z = 0;
        return rayDir;
      }
    });
    /**
     * Update camera and gizmos state
     */
    __publicField(this, "updateMatrixState", () => {
      if (!this.camera)
        return;
      this._cameraMatrixState.copy(this.camera.matrix);
      this._gizmoMatrixState.copy(this._gizmos.matrix);
      if (this.camera instanceof OrthographicCamera) {
        this._cameraProjectionState.copy(this.camera.projectionMatrix);
        this.camera.updateProjectionMatrix();
        this._zoomState = this.camera.zoom;
      }
      if (this.camera instanceof PerspectiveCamera) {
        this._fovState = this.camera.fov;
      }
    });
    /**
     * Update the trackball FSA
     * @param {STATE} newState New state of the FSA
     * @param {Boolean} updateMatrices If matriices state should be updated
     */
    __publicField(this, "updateTbState", (newState, updateMatrices) => {
      this._state = newState;
      if (updateMatrices) {
        this.updateMatrixState();
      }
    });
    __publicField(this, "update", () => {
      const EPS = 1e-6;
      if (!this.target.equals(this._currentTarget) && this.camera) {
        this._gizmos.position.set(this.target.x, this.target.y, this.target.z);
        const tbRadius = this.calculateTbRadius(this.camera);
        if (tbRadius !== void 0) {
          this._tbRadius = tbRadius;
        }
        this.makeGizmos(this.target, this._tbRadius);
        this._currentTarget.copy(this.target);
      }
      if (!this.camera)
        return;
      if (this.camera instanceof OrthographicCamera) {
        if (this.camera.zoom > this.maxZoom || this.camera.zoom < this.minZoom) {
          const newZoom = MathUtils.clamp(this.camera.zoom, this.minZoom, this.maxZoom);
          this.applyTransformMatrix(this.applyScale(newZoom / this.camera.zoom, this._gizmos.position, true));
        }
      }
      if (this.camera instanceof PerspectiveCamera) {
        const distance = this.camera.position.distanceTo(this._gizmos.position);
        if (distance > this.maxDistance + EPS || distance < this.minDistance - EPS) {
          const newDistance = MathUtils.clamp(distance, this.minDistance, this.maxDistance);
          this.applyTransformMatrix(this.applyScale(newDistance / distance, this._gizmos.position));
          this.updateMatrixState();
        }
        if (this.camera.fov < this.minFov || this.camera.fov > this.maxFov) {
          this.camera.fov = MathUtils.clamp(this.camera.fov, this.minFov, this.maxFov);
          this.camera.updateProjectionMatrix();
        }
        const oldRadius = this._tbRadius;
        const tbRadius = this.calculateTbRadius(this.camera);
        if (tbRadius !== void 0) {
          this._tbRadius = tbRadius;
        }
        if (oldRadius < this._tbRadius - EPS || oldRadius > this._tbRadius + EPS) {
          const scale = (this._gizmos.scale.x + this._gizmos.scale.y + this._gizmos.scale.z) / 3;
          const newRadius = this._tbRadius / scale;
          const curve = new EllipseCurve(0, 0, newRadius, newRadius);
          const points = curve.getPoints(this._curvePts);
          const curveGeometry = new BufferGeometry().setFromPoints(points);
          for (const gizmo in this._gizmos.children) {
            const child = this._gizmos.children[gizmo];
            child.geometry = curveGeometry;
          }
        }
      }
      this.camera.lookAt(this._gizmos.position);
    });
    __publicField(this, "setStateFromJSON", (json) => {
      const state = JSON.parse(json);
      if (state.arcballState && this.camera) {
        this._cameraMatrixState.fromArray(state.arcballState.cameraMatrix.elements);
        this._cameraMatrixState.decompose(this.camera.position, this.camera.quaternion, this.camera.scale);
        this.camera.up.copy(state.arcballState.cameraUp);
        this.camera.near = state.arcballState.cameraNear;
        this.camera.far = state.arcballState.cameraFar;
        this.camera.zoom = state.arcballState.cameraZoom;
        if (this.camera instanceof PerspectiveCamera) {
          this.camera.fov = state.arcballState.cameraFov;
        }
        this._gizmoMatrixState.fromArray(state.arcballState.gizmoMatrix.elements);
        this._gizmoMatrixState.decompose(this._gizmos.position, this._gizmos.quaternion, this._gizmos.scale);
        this.camera.updateMatrix();
        this.camera.updateProjectionMatrix();
        this._gizmos.updateMatrix();
        const tbRadius = this.calculateTbRadius(this.camera);
        if (tbRadius !== void 0) {
          this._tbRadius = tbRadius;
        }
        const gizmoTmp = new Matrix4().copy(this._gizmoMatrixState0);
        this.makeGizmos(this._gizmos.position, this._tbRadius);
        this._gizmoMatrixState0.copy(gizmoTmp);
        this.camera.lookAt(this._gizmos.position);
        this.updateTbState(STATE.IDLE, false);
        this.dispatchEvent(_changeEvent);
      }
    });
    this.camera = null;
    this.domElement = domElement;
    this.scene = scene;
    this.mouseActions = [];
    this._mouseOp = null;
    this._v2_1 = new Vector2();
    this._v3_1 = new Vector3();
    this._v3_2 = new Vector3();
    this._m4_1 = new Matrix4();
    this._m4_2 = new Matrix4();
    this._quat = new Quaternion();
    this._translationMatrix = new Matrix4();
    this._rotationMatrix = new Matrix4();
    this._scaleMatrix = new Matrix4();
    this._rotationAxis = new Vector3();
    this._cameraMatrixState = new Matrix4();
    this._cameraProjectionState = new Matrix4();
    this._fovState = 1;
    this._upState = new Vector3();
    this._zoomState = 1;
    this._nearPos = 0;
    this._farPos = 0;
    this._gizmoMatrixState = new Matrix4();
    this._up0 = new Vector3();
    this._zoom0 = 1;
    this._fov0 = 0;
    this._initialNear = 0;
    this._nearPos0 = 0;
    this._initialFar = 0;
    this._farPos0 = 0;
    this._cameraMatrixState0 = new Matrix4();
    this._gizmoMatrixState0 = new Matrix4();
    this._button = -1;
    this._touchStart = [];
    this._touchCurrent = [];
    this._input = INPUT.NONE;
    this._switchSensibility = 32;
    this._startFingerDistance = 0;
    this._currentFingerDistance = 0;
    this._startFingerRotation = 0;
    this._currentFingerRotation = 0;
    this._devPxRatio = 0;
    this._downValid = true;
    this._nclicks = 0;
    this._downEvents = [];
    this._clickStart = 0;
    this._maxDownTime = 250;
    this._maxInterval = 300;
    this._posThreshold = 24;
    this._movementThreshold = 24;
    this._currentCursorPosition = new Vector3();
    this._startCursorPosition = new Vector3();
    this._grid = null;
    this._gridPosition = new Vector3();
    this._gizmos = new Group();
    this._curvePts = 128;
    this._timeStart = -1;
    this._animationId = -1;
    this.focusAnimationTime = 500;
    this._timePrev = 0;
    this._timeCurrent = 0;
    this._anglePrev = 0;
    this._angleCurrent = 0;
    this._cursorPosPrev = new Vector3();
    this._cursorPosCurr = new Vector3();
    this._wPrev = 0;
    this._wCurr = 0;
    this.adjustNearFar = false;
    this.scaleFactor = 1.1;
    this.dampingFactor = 25;
    this.wMax = 20;
    this.enableAnimations = true;
    this.enableGrid = false;
    this.cursorZoom = false;
    this.minFov = 5;
    this.maxFov = 90;
    this.enabled = true;
    this.enablePan = true;
    this.enableRotate = true;
    this.enableZoom = true;
    this.minDistance = 0;
    this.maxDistance = Infinity;
    this.minZoom = 0;
    this.maxZoom = Infinity;
    this.target = new Vector3(0, 0, 0);
    this._currentTarget = new Vector3(0, 0, 0);
    this._tbRadius = 1;
    this._state = STATE.IDLE;
    this.setCamera(camera);
    if (this.scene) {
      this.scene.add(this._gizmos);
    }
    this._devPxRatio = window.devicePixelRatio;
    this.initializeMouseActions();
    if (this.domElement)
      this.connect(this.domElement);
    window.addEventListener("resize", this.onWindowResize);
  }
  /**
   * Apply a transformation matrix, to the camera and gizmos
   * @param {Object} transformation Object containing matrices to apply to camera and gizmos
   */
  applyTransformMatrix(transformation) {
    if ((transformation == null ? void 0 : transformation.camera) && this.camera) {
      this._m4_1.copy(this._cameraMatrixState).premultiply(transformation.camera);
      this._m4_1.decompose(this.camera.position, this.camera.quaternion, this.camera.scale);
      this.camera.updateMatrix();
      if (this._state == STATE.ROTATE || this._state == STATE.ZROTATE || this._state == STATE.ANIMATION_ROTATE) {
        this.camera.up.copy(this._upState).applyQuaternion(this.camera.quaternion);
      }
    }
    if (transformation == null ? void 0 : transformation.gizmos) {
      this._m4_1.copy(this._gizmoMatrixState).premultiply(transformation.gizmos);
      this._m4_1.decompose(this._gizmos.position, this._gizmos.quaternion, this._gizmos.scale);
      this._gizmos.updateMatrix();
    }
    if ((this._state == STATE.SCALE || this._state == STATE.FOCUS || this._state == STATE.ANIMATION_FOCUS) && this.camera) {
      const tbRadius = this.calculateTbRadius(this.camera);
      if (tbRadius !== void 0) {
        this._tbRadius = tbRadius;
      }
      if (this.adjustNearFar) {
        const cameraDistance = this.camera.position.distanceTo(this._gizmos.position);
        const bb = new Box3();
        bb.setFromObject(this._gizmos);
        const sphere = new Sphere();
        bb.getBoundingSphere(sphere);
        const adjustedNearPosition = Math.max(this._nearPos0, sphere.radius + sphere.center.length());
        const regularNearPosition = cameraDistance - this._initialNear;
        const minNearPos = Math.min(adjustedNearPosition, regularNearPosition);
        this.camera.near = cameraDistance - minNearPos;
        const adjustedFarPosition = Math.min(this._farPos0, -sphere.radius + sphere.center.length());
        const regularFarPosition = cameraDistance - this._initialFar;
        const minFarPos = Math.min(adjustedFarPosition, regularFarPosition);
        this.camera.far = cameraDistance - minFarPos;
        this.camera.updateProjectionMatrix();
      } else {
        let update = false;
        if (this.camera.near != this._initialNear) {
          this.camera.near = this._initialNear;
          update = true;
        }
        if (this.camera.far != this._initialFar) {
          this.camera.far = this._initialFar;
          update = true;
        }
        if (update) {
          this.camera.updateProjectionMatrix();
        }
      }
    }
  }
  /**
   * Set gizmos visibility
   * @param {Boolean} value Value of gizmos visibility
   */
  setGizmosVisible(value) {
    this._gizmos.visible = value;
    this.dispatchEvent(_changeEvent);
  }
  /**
   * Set values in transformation object
   * @param {Matrix4} camera Transformation to be applied to the camera
   * @param {Matrix4} gizmos Transformation to be applied to gizmos
   */
  setTransformationMatrices(camera = null, gizmos = null) {
    if (camera) {
      if (_transformation.camera) {
        _transformation.camera.copy(camera);
      } else {
        _transformation.camera = camera.clone();
      }
    } else {
      _transformation.camera = null;
    }
    if (gizmos) {
      if (_transformation.gizmos) {
        _transformation.gizmos.copy(gizmos);
      } else {
        _transformation.gizmos = gizmos.clone();
      }
    } else {
      _transformation.gizmos = null;
    }
  }
}
export {
  ArcballControls
};
//# sourceMappingURL=ArcballControls.js.map