@shiplab/vessel3d/source/libs/OrbitControls.js

Library for conceptual ship visualization using as support Three.js library

import {EventDispatcher, MOUSE, Quaternion, Spherical, TOUCH, Vector2, Vector3} from "./three.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

var OrbitControls = function (object, domElement) {
    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;

    // 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: 37, UP: 38, RIGHT: 39, BOTTOM: 40};

    // 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.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 () {
        var offset = new Vector3();

        // so camera.up is the orbit axis
        var quat = new Quaternion().setFromUnitVectors(object.up, new Vector3(0, 1, 0));
        var quatInverse = quat.clone().invert();

        var lastPosition = new Vector3();
        var lastQuaternion = new Quaternion();

        var twoPI = 2 * Math.PI;

        return function update() {
            var 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

            var min = scope.minAzimuthAngle;
            var 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("wheel", onMouseWheel);

        scope.domElement.removeEventListener("touchstart", onTouchStart);
        scope.domElement.removeEventListener("touchend", onTouchEnd);
        scope.domElement.removeEventListener("touchmove", onTouchMove);

        scope.domElement.ownerDocument.removeEventListener("pointermove", onPointerMove);
        scope.domElement.ownerDocument.removeEventListener("pointerup", onPointerUp);

        if (scope._domElementKeyEvents !== null) {
            scope._domElementKeyEvents.removeEventListener("keydown", onKeyDown);
        }

        //scope.dispatchEvent( { type: 'dispose' } ); // should this be added here?
    };

    //
    // internals
    //

    var scope = this;

    var changeEvent = {type: "change"};
    var startEvent = {type: "start"};
    var endEvent = {type: "end"};

    var STATE = {
        NONE: -1,
        ROTATE: 0,
        DOLLY: 1,
        PAN: 2,
        TOUCH_ROTATE: 3,
        TOUCH_PAN: 4,
        TOUCH_DOLLY_PAN: 5,
        TOUCH_DOLLY_ROTATE: 6,
    };

    var state = STATE.NONE;

    var EPS = 0.000001;

    // current position in spherical coordinates
    var spherical = new Spherical();
    var sphericalDelta = new Spherical();

    var scale = 1;
    var panOffset = new Vector3();
    var zoomChanged = false;

    var rotateStart = new Vector2();
    var rotateEnd = new Vector2();
    var rotateDelta = new Vector2();

    var panStart = new Vector2();
    var panEnd = new Vector2();
    var panDelta = new Vector2();

    var dollyStart = new Vector2();
    var dollyEnd = new Vector2();
    var dollyDelta = new Vector2();

    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;
    }

    var panLeft = (function () {
        var v = new Vector3();

        return function panLeft(distance, objectMatrix) {
            v.setFromMatrixColumn(objectMatrix, 0); // get X column of objectMatrix
            v.multiplyScalar(-distance);

            panOffset.add(v);
        };
    })();

    var panUp = (function () {
        var 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
    var pan = (function () {
        var offset = new Vector3();

        return function pan(deltaX, deltaY) {
            var element = scope.domElement;

            if (scope.object.isPerspectiveCamera) {
                // perspective
                var position = scope.object.position;
                offset.copy(position).sub(scope.target);
                var 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);

        var 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) {
        var needsUpdate = false;

        switch (event.keyCode) {
            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(event) {
        if (event.touches.length == 1) {
            rotateStart.set(event.touches[0].pageX, event.touches[0].pageY);
        } else {
            var x = 0.5 * (event.touches[0].pageX + event.touches[1].pageX);
            var y = 0.5 * (event.touches[0].pageY + event.touches[1].pageY);

            rotateStart.set(x, y);
        }
    }

    function handleTouchStartPan(event) {
        if (event.touches.length == 1) {
            panStart.set(event.touches[0].pageX, event.touches[0].pageY);
        } else {
            var x = 0.5 * (event.touches[0].pageX + event.touches[1].pageX);
            var y = 0.5 * (event.touches[0].pageY + event.touches[1].pageY);

            panStart.set(x, y);
        }
    }

    function handleTouchStartDolly(event) {
        var dx = event.touches[0].pageX - event.touches[1].pageX;
        var dy = event.touches[0].pageY - event.touches[1].pageY;

        var distance = Math.sqrt(dx * dx + dy * dy);

        dollyStart.set(0, distance);
    }

    function handleTouchStartDollyPan(event) {
        if (scope.enableZoom) handleTouchStartDolly(event);

        if (scope.enablePan) handleTouchStartPan(event);
    }

    function handleTouchStartDollyRotate(event) {
        if (scope.enableZoom) handleTouchStartDolly(event);

        if (scope.enableRotate) handleTouchStartRotate(event);
    }

    function handleTouchMoveRotate(event) {
        if (event.touches.length == 1) {
            rotateEnd.set(event.touches[0].pageX, event.touches[0].pageY);
        } else {
            var x = 0.5 * (event.touches[0].pageX + event.touches[1].pageX);
            var y = 0.5 * (event.touches[0].pageY + event.touches[1].pageY);

            rotateEnd.set(x, y);
        }

        rotateDelta.subVectors(rotateEnd, rotateStart).multiplyScalar(scope.rotateSpeed);

        var 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 (event.touches.length == 1) {
            panEnd.set(event.touches[0].pageX, event.touches[0].pageY);
        } else {
            var x = 0.5 * (event.touches[0].pageX + event.touches[1].pageX);
            var y = 0.5 * (event.touches[0].pageY + event.touches[1].pageY);

            panEnd.set(x, y);
        }

        panDelta.subVectors(panEnd, panStart).multiplyScalar(scope.panSpeed);

        pan(panDelta.x, panDelta.y);

        panStart.copy(panEnd);
    }

    function handleTouchMoveDolly(event) {
        var dx = event.touches[0].pageX - event.touches[1].pageX;
        var dy = event.touches[0].pageY - event.touches[1].pageY;

        var 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;

        switch (event.pointerType) {
            case "mouse":
            case "pen":
                onMouseDown(event);
                break;

            // TODO touch
        }
    }

    function onPointerMove(event) {
        if (scope.enabled === false) return;

        switch (event.pointerType) {
            case "mouse":
            case "pen":
                onMouseMove(event);
                break;

            // TODO touch
        }
    }

    function onPointerUp(event) {
        switch (event.pointerType) {
            case "mouse":
            case "pen":
                onMouseUp(event);
                break;

            // TODO touch
        }
    }

    function onMouseDown(event) {
        // Prevent the browser from scrolling.
        event.preventDefault();

        // Manually set the focus since calling preventDefault above
        // prevents the browser from setting it automatically.

        scope.domElement.focus ? scope.domElement.focus() : window.focus();

        var 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.domElement.ownerDocument.addEventListener("pointermove", onPointerMove);
            scope.domElement.ownerDocument.addEventListener("pointerup", onPointerUp);

            scope.dispatchEvent(startEvent);
        }
    }

    function onMouseMove(event) {
        if (scope.enabled === false) return;

        event.preventDefault();

        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) {
        scope.domElement.ownerDocument.removeEventListener("pointermove", onPointerMove);
        scope.domElement.ownerDocument.removeEventListener("pointerup", onPointerUp);

        if (scope.enabled === false) return;

        handleMouseUp(event);

        scope.dispatchEvent(endEvent);

        state = STATE.NONE;
    }

    function onMouseWheel(event) {
        if (scope.enabled === false || scope.enableZoom === false || (state !== STATE.NONE && state !== STATE.ROTATE)) return;

        event.preventDefault();
        event.stopPropagation();

        scope.dispatchEvent(startEvent);

        handleMouseWheel(event);

        scope.dispatchEvent(endEvent);
    }

    function onKeyDown(event) {
        if (scope.enabled === false || scope.enablePan === false) return;

        handleKeyDown(event);
    }

    function onTouchStart(event) {
        if (scope.enabled === false) return;

        event.preventDefault(); // prevent scrolling

        switch (event.touches.length) {
            case 1:
                switch (scope.touches.ONE) {
                    case TOUCH.ROTATE:
                        if (scope.enableRotate === false) return;

                        handleTouchStartRotate(event);

                        state = STATE.TOUCH_ROTATE;

                        break;

                    case TOUCH.PAN:
                        if (scope.enablePan === false) return;

                        handleTouchStartPan(event);

                        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(event);

                        state = STATE.TOUCH_DOLLY_PAN;

                        break;

                    case TOUCH.DOLLY_ROTATE:
                        if (scope.enableZoom === false && scope.enableRotate === false) return;

                        handleTouchStartDollyRotate(event);

                        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) {
        if (scope.enabled === false) return;

        event.preventDefault(); // prevent scrolling
        event.stopPropagation();

        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) {
        if (scope.enabled === false) return;

        handleTouchEnd(event);

        scope.dispatchEvent(endEvent);

        state = STATE.NONE;
    }

    function onContextMenu(event) {
        if (scope.enabled === false) return;

        event.preventDefault();
    }

    //

    scope.domElement.addEventListener("contextmenu", onContextMenu);

    scope.domElement.addEventListener("pointerdown", onPointerDown);
    scope.domElement.addEventListener("wheel", onMouseWheel);

    scope.domElement.addEventListener("touchstart", onTouchStart);
    scope.domElement.addEventListener("touchend", onTouchEnd);
    scope.domElement.addEventListener("touchmove", onTouchMove);

    // force an update at start

    this.update();
};

OrbitControls.prototype = Object.create(EventDispatcher.prototype);
OrbitControls.prototype.constructor = OrbitControls;

// 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

var MapControls = function (object, domElement) {
    OrbitControls.call(this, 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;
};

MapControls.prototype = Object.create(EventDispatcher.prototype);
MapControls.prototype.constructor = MapControls;

export {OrbitControls, MapControls};