text: import {
    EventDispatcher,
    MOUSE,
    Quaternion,
    Spherical,
    TOUCH,
    Vector2,
    Vector3,
  } from "./three.module.js";
  
  // This set of controls performs orbiting, dollying (zooming), and panning.
  // Unlike TrackballControls, it maintains the "up" direction object.up (+Y by default).
  //
  //    Orbit - left mouse / touch: one-finger move
  //    Zoom - middle mouse, or mousewheel / touch: two-finger spread or squish
  //    Pan - right mouse, or left mouse + ctrl/meta/shiftKey, or arrow keys / touch: two-finger move
  
  const _changeEvent = { type: "change" };
  const _startEvent = { type: "start" };
  const _endEvent = { type: "end" };
  
  class OrbitControls extends EventDispatcher {
    constructor(object, domElement) {
      super();
  
      if (domElement === undefined)
        console.warn(
          'THREE.OrbitControls: The second parameter "domElement" is now mandatory.'
        );
      if (domElement === document)
        console.error(
          'THREE.OrbitControls: "document" should not be used as the target "domElement". Please use "renderer.domElement" instead.'
        );
  
      this.object = object;
      this.domElement = domElement;
      this.domElement.style.touchAction = "none"; // disable touch scroll
  
      // Set to false to disable this control
      this.enabled = true;
  
      // "target" sets the location of focus, where the object orbits around
      this.target = new Vector3();
  
      // How far you can dolly in and out ( PerspectiveCamera only )
      this.minDistance = 0;
      this.maxDistance = Infinity;
  
      // How far you can zoom in and out ( OrthographicCamera only )
      this.minZoom = 0;
      this.maxZoom = Infinity;
  
      // How far you can orbit vertically, upper and lower limits.
      // Range is 0 to Math.PI radians.
      this.minPolarAngle = 0; // radians
      this.maxPolarAngle = Math.PI; // radians
  
      // How far you can orbit horizontally, upper and lower limits.
      // If set, the interval [ min, max ] must be a sub-interval of [ - 2 PI, 2 PI ], with ( max - min < 2 PI )
      this.minAzimuthAngle = -Infinity; // radians
      this.maxAzimuthAngle = Infinity; // radians
  
      // Set to true to enable damping (inertia)
      // If damping is enabled, you must call controls.update() in your animation loop
      this.enableDamping = false;
      this.dampingFactor = 0.05;
  
      // This option actually enables dollying in and out; left as "zoom" for backwards compatibility.
      // Set to false to disable zooming
      this.enableZoom = true;
      this.zoomSpeed = 1.0;
  
      // Set to false to disable rotating
      this.enableRotate = true;
      this.rotateSpeed = 1.0;
  
      // Set to false to disable panning
      this.enablePan = true;
      this.panSpeed = 1.0;
      this.screenSpacePanning = true; // if false, pan orthogonal to world-space direction camera.up
      this.keyPanSpeed = 7.0; // pixels moved per arrow key push
  
      // Set to true to automatically rotate around the target
      // If auto-rotate is enabled, you must call controls.update() in your animation loop
      this.autoRotate = false;
      this.autoRotateSpeed = 2.0; // 30 seconds per orbit when fps is 60
  
      // The four arrow keys
      this.keys = {
        LEFT: "ArrowLeft",
        UP: "ArrowUp",
        RIGHT: "ArrowRight",
        BOTTOM: "ArrowDown",
      };
  
      // Mouse buttons
      this.mouseButtons = {
        LEFT: MOUSE.ROTATE,
        MIDDLE: MOUSE.DOLLY,
        RIGHT: MOUSE.PAN,
      };
  
      // Touch fingers
      this.touches = { ONE: TOUCH.ROTATE, TWO: TOUCH.DOLLY_PAN };
  
      // for reset
      this.target0 = this.target.clone();
      this.position0 = this.object.position.clone();
      this.zoom0 = this.object.zoom;
  
      // the target DOM element for key events
      this._domElementKeyEvents = null;
  
      //
      // public methods
      //
  
      this.getPolarAngle = function () {
        return spherical.phi;
      };
  
      this.getAzimuthalAngle = function () {
        return spherical.theta;
      };
  
      this.getDistance = function () {
        return this.object.position.distanceTo(this.target);
      };
  
      this.listenToKeyEvents = function (domElement) {
        domElement.addEventListener("keydown", onKeyDown);
        this._domElementKeyEvents = domElement;
      };
  
      this.saveState = function () {
        scope.target0.copy(scope.target);
        scope.position0.copy(scope.object.position);
        scope.zoom0 = scope.object.zoom;
      };
  
      this.reset = function () {
        scope.target.copy(scope.target0);
        scope.object.position.copy(scope.position0);
        scope.object.zoom = scope.zoom0;
  
        scope.object.updateProjectionMatrix();
        scope.dispatchEvent(_changeEvent);
  
        scope.update();
  
        state = STATE.NONE;
      };
  
      // this method is exposed, but perhaps it would be better if we can make it private...
      this.update = (function () {
        const offset = new Vector3();
  
        // so camera.up is the orbit axis
        const quat = new Quaternion().setFromUnitVectors(
          object.up,
          new Vector3(0, 1, 0)
        );
        const quatInverse = quat.clone().invert();
  
        const lastPosition = new Vector3();
        const lastQuaternion = new Quaternion();
  
        const twoPI = 2 * Math.PI;
  
        return function update() {
          const position = scope.object.position;
  
          offset.copy(position).sub(scope.target);
  
          // rotate offset to "y-axis-is-up" space
          offset.applyQuaternion(quat);
  
          // angle from z-axis around y-axis
          spherical.setFromVector3(offset);
  
          if (scope.autoRotate && state === STATE.NONE) {
            rotateLeft(getAutoRotationAngle());
          }
  
          if (scope.enableDamping) {
            spherical.theta += sphericalDelta.theta * scope.dampingFactor;
            spherical.phi += sphericalDelta.phi * scope.dampingFactor;
          } else {
            spherical.theta += sphericalDelta.theta;
            spherical.phi += sphericalDelta.phi;
          }
  
          // restrict theta to be between desired limits
  
          let min = scope.minAzimuthAngle;
          let max = scope.maxAzimuthAngle;
  
          if (isFinite(min) && isFinite(max)) {
            if (min < -Math.PI) min += twoPI;
            else if (min > Math.PI) min -= twoPI;
  
            if (max < -Math.PI) max += twoPI;
            else if (max > Math.PI) max -= twoPI;
  
            if (min <= max) {
              spherical.theta = Math.max(min, Math.min(max, spherical.theta));
            } else {
              spherical.theta =
                spherical.theta > (min + max) / 2
                  ? Math.max(min, spherical.theta)
                  : Math.min(max, spherical.theta);
            }
          }
  
          // restrict phi to be between desired limits
          spherical.phi = Math.max(
            scope.minPolarAngle,
            Math.min(scope.maxPolarAngle, spherical.phi)
          );
  
          spherical.makeSafe();
  
          spherical.radius *= scale;
  
          // restrict radius to be between desired limits
          spherical.radius = Math.max(
            scope.minDistance,
            Math.min(scope.maxDistance, spherical.radius)
          );
  
          // move target to panned location
  
          if (scope.enableDamping === true) {
            scope.target.addScaledVector(panOffset, scope.dampingFactor);
          } else {
            scope.target.add(panOffset);
          }
  
          offset.setFromSpherical(spherical);
  
          // rotate offset back to "camera-up-vector-is-up" space
          offset.applyQuaternion(quatInverse);
  
          position.copy(scope.target).add(offset);
  
          scope.object.lookAt(scope.target);
  
          if (scope.enableDamping === true) {
            sphericalDelta.theta *= 1 - scope.dampingFactor;
            sphericalDelta.phi *= 1 - scope.dampingFactor;
  
            panOffset.multiplyScalar(1 - scope.dampingFactor);
          } else {
            sphericalDelta.set(0, 0, 0);
  
            panOffset.set(0, 0, 0);
          }
  
          scale = 1;
  
          // update condition is:
          // min(camera displacement, camera rotation in radians)^2 > EPS
          // using small-angle approximation cos(x/2) = 1 - x^2 / 8
  
          if (
            zoomChanged ||
            lastPosition.distanceToSquared(scope.object.position) > EPS ||
            8 * (1 - lastQuaternion.dot(scope.object.quaternion)) > EPS
          ) {
            scope.dispatchEvent(_changeEvent);
  
            lastPosition.copy(scope.object.position);
            lastQuaternion.copy(scope.object.quaternion);
            zoomChanged = false;
  
            return true;
          }
  
          return false;
        };
      })();
  
      this.dispose = function () {
        scope.domElement.removeEventListener("contextmenu", onContextMenu);
  
        scope.domElement.removeEventListener("pointerdown", onPointerDown);
        scope.domElement.removeEventListener("pointercancel", onPointerCancel);
        scope.domElement.removeEventListener("wheel", onMouseWheel);
  
        scope.domElement.removeEventListener("pointermove", onPointerMove);
        scope.domElement.removeEventListener("pointerup", onPointerUp);
  
        if (scope._domElementKeyEvents !== null) {
          scope._domElementKeyEvents.removeEventListener("keydown", onKeyDown);
        }
  
        //scope.dispatchEvent( { type: 'dispose' } ); // should this be added here?
      };
  
      //
      // internals
      //
  
      const scope = this;
  
      const STATE = {
        NONE: -1,
        ROTATE: 0,
        DOLLY: 1,
        PAN: 2,
        TOUCH_ROTATE: 3,
        TOUCH_PAN: 4,
        TOUCH_DOLLY_PAN: 5,
        TOUCH_DOLLY_ROTATE: 6,
      };
  
      let state = STATE.NONE;
  
      const EPS = 0.000001;
  
      // current position in spherical coordinates
      const spherical = new Spherical();
      const sphericalDelta = new Spherical();
  
      let scale = 1;
      const panOffset = new Vector3();
      let zoomChanged = false;
  
      const rotateStart = new Vector2();
      const rotateEnd = new Vector2();
      const rotateDelta = new Vector2();
  
      const panStart = new Vector2();
      const panEnd = new Vector2();
      const panDelta = new Vector2();
  
      const dollyStart = new Vector2();
      const dollyEnd = new Vector2();
      const dollyDelta = new Vector2();
  
      const pointers = [];
      const pointerPositions = {};
  
      function getAutoRotationAngle() {
        return ((2 * Math.PI) / 60 / 60) * scope.autoRotateSpeed;
      }
  
      function getZoomScale() {
        return Math.pow(0.95, scope.zoomSpeed);
      }
  
      function rotateLeft(angle) {
        sphericalDelta.theta -= angle;
      }
  
      function rotateUp(angle) {
        sphericalDelta.phi -= angle;
      }
  
      const panLeft = (function () {
        const v = new Vector3();
  
        return function panLeft(distance, objectMatrix) {
          v.setFromMatrixColumn(objectMatrix, 0); // get X column of objectMatrix
          v.multiplyScalar(-distance);
  
          panOffset.add(v);
        };
      })();
  
      const panUp = (function () {
        const v = new Vector3();
  
        return function panUp(distance, objectMatrix) {
          if (scope.screenSpacePanning === true) {
            v.setFromMatrixColumn(objectMatrix, 1);
          } else {
            v.setFromMatrixColumn(objectMatrix, 0);
            v.crossVectors(scope.object.up, v);
          }
  
          v.multiplyScalar(distance);
  
          panOffset.add(v);
        };
      })();
  
      // deltaX and deltaY are in pixels; right and down are positive
      const pan = (function () {
        const offset = new Vector3();
  
        return function pan(deltaX, deltaY) {
          const element = scope.domElement;
  
          if (scope.object.isPerspectiveCamera) {
            // perspective
            const position = scope.object.position;
            offset.copy(position).sub(scope.target);
            let targetDistance = offset.length();
  
            // half of the fov is center to top of screen
            targetDistance *= Math.tan(
              ((scope.object.fov / 2) * Math.PI) / 180.0
            );
  
            // we use only clientHeight here so aspect ratio does not distort speed
            panLeft(
              (2 * deltaX * targetDistance) / element.clientHeight,
              scope.object.matrix
            );
            panUp(
              (2 * deltaY * targetDistance) / element.clientHeight,
              scope.object.matrix
            );
          } else if (scope.object.isOrthographicCamera) {
            // orthographic
            panLeft(
              (deltaX * (scope.object.right - scope.object.left)) /
                scope.object.zoom /
                element.clientWidth,
              scope.object.matrix
            );
            panUp(
              (deltaY * (scope.object.top - scope.object.bottom)) /
                scope.object.zoom /
                element.clientHeight,
              scope.object.matrix
            );
          } else {
            // camera neither orthographic nor perspective
            console.warn(
              "WARNING: OrbitControls.js encountered an unknown camera type - pan disabled."
            );
            scope.enablePan = false;
          }
        };
      })();
  
      function dollyOut(dollyScale) {
        if (scope.object.isPerspectiveCamera) {
          scale /= dollyScale;
        } else if (scope.object.isOrthographicCamera) {
          scope.object.zoom = Math.max(
            scope.minZoom,
            Math.min(scope.maxZoom, scope.object.zoom * dollyScale)
          );
          scope.object.updateProjectionMatrix();
          zoomChanged = true;
        } else {
          console.warn(
            "WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled."
          );
          scope.enableZoom = false;
        }
      }
  
      function dollyIn(dollyScale) {
        if (scope.object.isPerspectiveCamera) {
          scale *= dollyScale;
        } else if (scope.object.isOrthographicCamera) {
          scope.object.zoom = Math.max(
            scope.minZoom,
            Math.min(scope.maxZoom, scope.object.zoom / dollyScale)
          );
          scope.object.updateProjectionMatrix();
          zoomChanged = true;
        } else {
          console.warn(
            "WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled."
          );
          scope.enableZoom = false;
        }
      }
  
      //
      // event callbacks - update the object state
      //
  
      function handleMouseDownRotate(event) {
        rotateStart.set(event.clientX, event.clientY);
      }
  
      function handleMouseDownDolly(event) {
        dollyStart.set(event.clientX, event.clientY);
      }
  
      function handleMouseDownPan(event) {
        panStart.set(event.clientX, event.clientY);
      }
  
      function handleMouseMoveRotate(event) {
        rotateEnd.set(event.clientX, event.clientY);
  
        rotateDelta
          .subVectors(rotateEnd, rotateStart)
          .multiplyScalar(scope.rotateSpeed);
  
        const element = scope.domElement;
  
        rotateLeft((2 * Math.PI * rotateDelta.x) / element.clientHeight); // yes, height
  
        rotateUp((2 * Math.PI * rotateDelta.y) / element.clientHeight);
  
        rotateStart.copy(rotateEnd);
  
        scope.update();
      }
  
      function handleMouseMoveDolly(event) {
        dollyEnd.set(event.clientX, event.clientY);
  
        dollyDelta.subVectors(dollyEnd, dollyStart);
  
        if (dollyDelta.y > 0) {
          dollyOut(getZoomScale());
        } else if (dollyDelta.y < 0) {
          dollyIn(getZoomScale());
        }
  
        dollyStart.copy(dollyEnd);
  
        scope.update();
      }
  
      function handleMouseMovePan(event) {
        panEnd.set(event.clientX, event.clientY);
  
        panDelta.subVectors(panEnd, panStart).multiplyScalar(scope.panSpeed);
  
        pan(panDelta.x, panDelta.y);
  
        panStart.copy(panEnd);
  
        scope.update();
      }
  
      function handleMouseUp(/*event*/) {
        // no-op
      }
  
      function handleMouseWheel(event) {
        if (event.deltaY < 0) {
          dollyIn(getZoomScale());
        } else if (event.deltaY > 0) {
          dollyOut(getZoomScale());
        }
  
        scope.update();
      }
  
      function handleKeyDown(event) {
        let needsUpdate = false;
  
        switch (event.code) {
          case scope.keys.UP:
            pan(0, scope.keyPanSpeed);
            needsUpdate = true;
            break;
  
          case scope.keys.BOTTOM:
            pan(0, -scope.keyPanSpeed);
            needsUpdate = true;
            break;
  
          case scope.keys.LEFT:
            pan(scope.keyPanSpeed, 0);
            needsUpdate = true;
            break;
  
          case scope.keys.RIGHT:
            pan(-scope.keyPanSpeed, 0);
            needsUpdate = true;
            break;
        }
  
        if (needsUpdate) {
          // prevent the browser from scrolling on cursor keys
          event.preventDefault();
  
          scope.update();
        }
      }
  
      function handleTouchStartRotate() {
        if (pointers.length === 1) {
          rotateStart.set(pointers[0].pageX, pointers[0].pageY);
        } else {
          const x = 0.5 * (pointers[0].pageX + pointers[1].pageX);
          const y = 0.5 * (pointers[0].pageY + pointers[1].pageY);
  
          rotateStart.set(x, y);
        }
      }
  
      function handleTouchStartPan() {
        if (pointers.length === 1) {
          panStart.set(pointers[0].pageX, pointers[0].pageY);
        } else {
          const x = 0.5 * (pointers[0].pageX + pointers[1].pageX);
          const y = 0.5 * (pointers[0].pageY + pointers[1].pageY);
  
          panStart.set(x, y);
        }
      }
  
      function handleTouchStartDolly() {
        const dx = pointers[0].pageX - pointers[1].pageX;
        const dy = pointers[0].pageY - pointers[1].pageY;
  
        const distance = Math.sqrt(dx * dx + dy * dy);
  
        dollyStart.set(0, distance);
      }
  
      function handleTouchStartDollyPan() {
        if (scope.enableZoom) handleTouchStartDolly();
  
        if (scope.enablePan) handleTouchStartPan();
      }
  
      function handleTouchStartDollyRotate() {
        if (scope.enableZoom) handleTouchStartDolly();
  
        if (scope.enableRotate) handleTouchStartRotate();
      }
  
      function handleTouchMoveRotate(event) {
        if (pointers.length == 1) {
          rotateEnd.set(event.pageX, event.pageY);
        } else {
          const position = getSecondPointerPosition(event);
  
          const x = 0.5 * (event.pageX + position.x);
          const y = 0.5 * (event.pageY + position.y);
  
          rotateEnd.set(x, y);
        }
  
        rotateDelta
          .subVectors(rotateEnd, rotateStart)
          .multiplyScalar(scope.rotateSpeed);
  
        const element = scope.domElement;
  
        rotateLeft((2 * Math.PI * rotateDelta.x) / element.clientHeight); // yes, height
  
        rotateUp((2 * Math.PI * rotateDelta.y) / element.clientHeight);
  
        rotateStart.copy(rotateEnd);
      }
  
      function handleTouchMovePan(event) {
        if (pointers.length === 1) {
          panEnd.set(event.pageX, event.pageY);
        } else {
          const position = getSecondPointerPosition(event);
  
          const x = 0.5 * (event.pageX + position.x);
          const y = 0.5 * (event.pageY + position.y);
  
          panEnd.set(x, y);
        }
  
        panDelta.subVectors(panEnd, panStart).multiplyScalar(scope.panSpeed);
  
        pan(panDelta.x, panDelta.y);
  
        panStart.copy(panEnd);
      }
  
      function handleTouchMoveDolly(event) {
        const position = getSecondPointerPosition(event);
  
        const dx = event.pageX - position.x;
        const dy = event.pageY - position.y;
  
        const distance = Math.sqrt(dx * dx + dy * dy);
  
        dollyEnd.set(0, distance);
  
        dollyDelta.set(0, Math.pow(dollyEnd.y / dollyStart.y, scope.zoomSpeed));
  
        dollyOut(dollyDelta.y);
  
        dollyStart.copy(dollyEnd);
      }
  
      function handleTouchMoveDollyPan(event) {
        if (scope.enableZoom) handleTouchMoveDolly(event);
  
        if (scope.enablePan) handleTouchMovePan(event);
      }
  
      function handleTouchMoveDollyRotate(event) {
        if (scope.enableZoom) handleTouchMoveDolly(event);
  
        if (scope.enableRotate) handleTouchMoveRotate(event);
      }
  
      function handleTouchEnd(/*event*/) {
        // no-op
      }
  
      //
      // event handlers - FSM: listen for events and reset state
      //
  
      function onPointerDown(event) {
        if (scope.enabled === false) return;
  
        if (pointers.length === 0) {
          scope.domElement.setPointerCapture(event.pointerId);
  
          scope.domElement.addEventListener("pointermove", onPointerMove);
          scope.domElement.addEventListener("pointerup", onPointerUp);
        }
  
        //
  
        addPointer(event);
  
        if (event.pointerType === "touch") {
          onTouchStart(event);
        } else {
          onMouseDown(event);
        }
      }
  
      function onPointerMove(event) {
        if (scope.enabled === false) return;
  
        if (event.pointerType === "touch") {
          onTouchMove(event);
        } else {
          onMouseMove(event);
        }
      }
  
      function onPointerUp(event) {
        if (scope.enabled === false) return;
  
        if (event.pointerType === "touch") {
          onTouchEnd();
        } else {
          onMouseUp(event);
        }
  
        removePointer(event);
  
        //
  
        if (pointers.length === 0) {
          scope.domElement.releasePointerCapture(event.pointerId);
  
          scope.domElement.removeEventListener("pointermove", onPointerMove);
          scope.domElement.removeEventListener("pointerup", onPointerUp);
        }
      }
  
      function onPointerCancel(event) {
        removePointer(event);
      }
  
      function onMouseDown(event) {
        let mouseAction;
  
        switch (event.button) {
          case 0:
            mouseAction = scope.mouseButtons.LEFT;
            break;
  
          case 1:
            mouseAction = scope.mouseButtons.MIDDLE;
            break;
  
          case 2:
            mouseAction = scope.mouseButtons.RIGHT;
            break;
  
          default:
            mouseAction = -1;
        }
  
        switch (mouseAction) {
          case MOUSE.DOLLY:
            if (scope.enableZoom === false) return;
  
            handleMouseDownDolly(event);
  
            state = STATE.DOLLY;
  
            break;
  
          case MOUSE.ROTATE:
            if (event.ctrlKey || event.metaKey || event.shiftKey) {
              if (scope.enablePan === false) return;
  
              handleMouseDownPan(event);
  
              state = STATE.PAN;
            } else {
              if (scope.enableRotate === false) return;
  
              handleMouseDownRotate(event);
  
              state = STATE.ROTATE;
            }
  
            break;
  
          case MOUSE.PAN:
            if (event.ctrlKey || event.metaKey || event.shiftKey) {
              if (scope.enableRotate === false) return;
  
              handleMouseDownRotate(event);
  
              state = STATE.ROTATE;
            } else {
              if (scope.enablePan === false) return;
  
              handleMouseDownPan(event);
  
              state = STATE.PAN;
            }
  
            break;
  
          default:
            state = STATE.NONE;
        }
  
        if (state !== STATE.NONE) {
          scope.dispatchEvent(_startEvent);
        }
      }
  
      function onMouseMove(event) {
        if (scope.enabled === false) return;
  
        switch (state) {
          case STATE.ROTATE:
            if (scope.enableRotate === false) return;
  
            handleMouseMoveRotate(event);
  
            break;
  
          case STATE.DOLLY:
            if (scope.enableZoom === false) return;
  
            handleMouseMoveDolly(event);
  
            break;
  
          case STATE.PAN:
            if (scope.enablePan === false) return;
  
            handleMouseMovePan(event);
  
            break;
        }
      }
  
      function onMouseUp(event) {
        handleMouseUp(event);
  
        scope.dispatchEvent(_endEvent);
  
        state = STATE.NONE;
      }
  
      function onMouseWheel(event) {
        if (
          scope.enabled === false ||
          scope.enableZoom === false ||
          state !== STATE.NONE
        )
          return;
  
        event.preventDefault();
  
        scope.dispatchEvent(_startEvent);
  
        handleMouseWheel(event);
  
        scope.dispatchEvent(_endEvent);
      }
  
      function onKeyDown(event) {
        if (scope.enabled === false || scope.enablePan === false) return;
  
        handleKeyDown(event);
      }
  
      function onTouchStart(event) {
        trackPointer(event);
  
        switch (pointers.length) {
          case 1:
            switch (scope.touches.ONE) {
              case TOUCH.ROTATE:
                if (scope.enableRotate === false) return;
  
                handleTouchStartRotate();
  
                state = STATE.TOUCH_ROTATE;
  
                break;
  
              case TOUCH.PAN:
                if (scope.enablePan === false) return;
  
                handleTouchStartPan();
  
                state = STATE.TOUCH_PAN;
  
                break;
  
              default:
                state = STATE.NONE;
            }
  
            break;
  
          case 2:
            switch (scope.touches.TWO) {
              case TOUCH.DOLLY_PAN:
                if (scope.enableZoom === false && scope.enablePan === false)
                  return;
  
                handleTouchStartDollyPan();
  
                state = STATE.TOUCH_DOLLY_PAN;
  
                break;
  
              case TOUCH.DOLLY_ROTATE:
                if (scope.enableZoom === false && scope.enableRotate === false)
                  return;
  
                handleTouchStartDollyRotate();
  
                state = STATE.TOUCH_DOLLY_ROTATE;
  
                break;
  
              default:
                state = STATE.NONE;
            }
  
            break;
  
          default:
            state = STATE.NONE;
        }
  
        if (state !== STATE.NONE) {
          scope.dispatchEvent(_startEvent);
        }
      }
  
      function onTouchMove(event) {
        trackPointer(event);
  
        switch (state) {
          case STATE.TOUCH_ROTATE:
            if (scope.enableRotate === false) return;
  
            handleTouchMoveRotate(event);
  
            scope.update();
  
            break;
  
          case STATE.TOUCH_PAN:
            if (scope.enablePan === false) return;
  
            handleTouchMovePan(event);
  
            scope.update();
  
            break;
  
          case STATE.TOUCH_DOLLY_PAN:
            if (scope.enableZoom === false && scope.enablePan === false) return;
  
            handleTouchMoveDollyPan(event);
  
            scope.update();
  
            break;
  
          case STATE.TOUCH_DOLLY_ROTATE:
            if (scope.enableZoom === false && scope.enableRotate === false)
              return;
  
            handleTouchMoveDollyRotate(event);
  
            scope.update();
  
            break;
  
          default:
            state = STATE.NONE;
        }
      }
  
      function onTouchEnd(event) {
        handleTouchEnd(event);
  
        scope.dispatchEvent(_endEvent);
  
        state = STATE.NONE;
      }
  
      function onContextMenu(event) {
        if (scope.enabled === false) return;
  
        event.preventDefault();
      }
  
      function addPointer(event) {
        pointers.push(event);
      }
  
      function removePointer(event) {
        delete pointerPositions[event.pointerId];
  
        for (let i = 0; i < pointers.length; i++) {
          if (pointers[i].pointerId == event.pointerId) {
            pointers.splice(i, 1);
            return;
          }
        }
      }
  
      function trackPointer(event) {
        let position = pointerPositions[event.pointerId];
  
        if (position === undefined) {
          position = new Vector2();
          pointerPositions[event.pointerId] = position;
        }
  
        position.set(event.pageX, event.pageY);
      }
  
      function getSecondPointerPosition(event) {
        const pointer =
          event.pointerId === pointers[0].pointerId ? pointers[1] : pointers[0];
  
        return pointerPositions[pointer.pointerId];
      }
  
      //
  
      scope.domElement.addEventListener("contextmenu", onContextMenu);
  
      scope.domElement.addEventListener("pointerdown", onPointerDown);
      scope.domElement.addEventListener("pointercancel", onPointerCancel);
      scope.domElement.addEventListener("wheel", onMouseWheel, {
        passive: false,
      });
  
      // force an update at start
  
      this.update();
    }
  }
  
  // This set of controls performs orbiting, dollying (zooming), and panning.
  // Unlike TrackballControls, it maintains the "up" direction object.up (+Y by default).
  // This is very similar to OrbitControls, another set of touch behavior
  //
  //    Orbit - right mouse, or left mouse + ctrl/meta/shiftKey / touch: two-finger rotate
  //    Zoom - middle mouse, or mousewheel / touch: two-finger spread or squish
  //    Pan - left mouse, or arrow keys / touch: one-finger move
  
  class MapControls extends OrbitControls {
    constructor(object, domElement) {
      super(object, domElement);
  
      this.screenSpacePanning = false; // pan orthogonal to world-space direction camera.up
  
      this.mouseButtons.LEFT = MOUSE.PAN;
      this.mouseButtons.RIGHT = MOUSE.ROTATE;
  
      this.touches.ONE = TOUCH.PAN;
      this.touches.TWO = TOUCH.DOLLY_ROTATE;
    }
  }
  
  export { OrbitControls, MapControls };
  