// var __extends =
//   (this && this.__extends) ||
//   (function () {
//     var extendStatics = function (d, b) {
//       extendStatics =
//         Object.setPrototypeOf ||
//         ({
//             __proto__: []
//           }
//           instanceof Array &&
//           function (d, b) {
//             d.__proto__ = b;
//           }) ||
//         function (d, b) {
//           for (var p in b)
//             if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p];
//         };
//       return extendStatics(d, b);
//     };
//     return function (d, b) {
//       if (typeof b !== "function" && b !== null)
//         throw new TypeError(
//           "Class extends value " + String(b) + " is not a constructor or null"
//         );
//       extendStatics(d, b);

//       function __() {
//         this.constructor = d;
//       }
//       d.prototype =
//         b === null ?
//         Object.create(b) :
//         ((__.prototype = b.prototype), new __());
//     };
//   })();
// /**
//  * @module ol/interaction/Draw
//  */
// import Circle from "ol/geom/Circle.js";
// import Event from "ol/events/Event.js";
// import EventType from "ol/events/EventType.js";
// import Feature from "ol/Feature.js";
// import GeometryType from "ol/geom/GeometryType.js";
// import InteractionProperty from "ol/interaction/Property.js";
// import LineString from "ol/geom/LineString.js";
// import MapBrowserEvent from "ol/MapBrowserEvent.js";
// import MapBrowserEventType from "ol/MapBrowserEventType.js";
// import MultiLineString from "ol/geom/MultiLineString.js";
// import MultiPoint from "ol/geom/MultiPoint.js";
// import MultiPolygon from "ol/geom/MultiPolygon.js";
// import Point from "ol/geom/Point.js";
// import PointerInteraction from "ol/interaction/Pointer.js";
// import Polygon, {
//   fromCircle,
//   makeRegular
// } from "ol/geom/Polygon.js";
// import VectorLayer from "ol/layer/Vector.js";
// import VectorSource from "ol/source/Vector.js";
// import {
//   FALSE,
//   TRUE
// } from "ol/functions.js";
// import {
//   always,
//   noModifierKeys,
//   shiftKeyOnly
// } from "ol/events/condition.js";
// import {
//   boundingExtent,
//   getBottomLeft,
//   getBottomRight,
//   getTopLeft,
//   getTopRight,
// } from "ol/extent.js";
// import {
//   createEditingStyle
// } from "ol/style/Style.js";
// import {
//   fromUserCoordinate,
//   getUserProjection
// } from "ol/proj.js";
// import {
//   squaredDistance as squaredCoordinateDistance
// } from "ol/coordinate.js";
// /**
//  * @typedef {Object} Options
//  * @property {import("ol/geom/GeometryType.js").default} type Geometry type of
//  * the geometries being drawn with this instance.
//  * @property {number} [clickTolerance=6] The maximum distance in pixels between
//  * "down" and "up" for a "up" event to be considered a "click" event and
//  * actually add a point/vertex to the geometry being drawn.  The default of `6`
//  * was chosen for the draw interaction to behave correctly on mouse as well as
//  * on touch devices.
//  * @property {import("ol/Collection.js").default<Feature>} [features]
//  * Destination collection for the drawn features.
//  * @property {VectorSource} [source] Destination source for
//  * the drawn features.
//  * @property {number} [dragVertexDelay=500] Delay in milliseconds after pointerdown
//  * before the current vertex can be dragged to its exact position.
//  * @property {number} [snapTolerance=12] Pixel distance for snapping to the
//  * drawing finish. Must be greater than `0`.
//  * @property {boolean} [stopClick=false] Stop click, singleclick, and
//  * doubleclick events from firing during drawing.
//  * @property {number} [maxPoints] The number of points that can be drawn before
//  * a polygon ring or line string is finished. By default there is no
//  * restriction.
//  * @property {number} [minPoints] The number of points that must be drawn
//  * before a polygon ring or line string can be finished. Default is `3` for
//  * polygon rings and `2` for line strings.
//  * @property {import("ol/events/condition.js").Condition} [finishCondition] A function
//  * that takes an {@link module:ol/MapBrowserEvent~MapBrowserEvent} and returns a
//  * boolean to indicate whether the drawing can be finished. Not used when drawing
//  * POINT or MULTI_POINT geometries.
//  * @property {import("ol/style/Style.js").StyleLike} [style]
//  * Style for sketch features.
//  * @property {GeometryFunction} [geometryFunction]
//  * Function that is called when a geometry's coordinates are updated.
//  * @property {string} [geometryName] Geometry name to use for features created
//  * by the draw interaction.
//  * @property {import("ol/events/condition.js").Condition} [condition] A function that
//  * takes an {@link module:ol/MapBrowserEvent~MapBrowserEvent} and returns a
//  * boolean to indicate whether that event should be handled.
//  * By default {@link module:ol/events/condition.noModifierKeys}, i.e. a click,
//  * adds a vertex or deactivates freehand drawing.
//  * @property {boolean} [freehand=false] Operate in freehand mode for lines,
//  * polygons, and circles.  This makes the interaction always operate in freehand
//  * mode and takes precedence over any `freehandCondition` option.
//  * @property {import("ol/events/condition.js").Condition} [freehandCondition]
//  * Condition that activates freehand drawing for lines and polygons. This
//  * function takes an {@link module:ol/MapBrowserEvent~MapBrowserEvent} and
//  * returns a boolean to indicate whether that event should be handled. The
//  * default is {@link module:ol/events/condition.shiftKeyOnly}, meaning that the
//  * Shift key activates freehand drawing.
//  * @property {boolean} [wrapX=false] Wrap the world horizontally on the sketch
//  * overlay.
//  */
// /**
//  * Coordinate type when drawing points.
//  * @typedef {import("ol/coordinate.js").Coordinate} PointCoordType
//  */
// /**
//  * Coordinate type when drawing lines.
//  * @typedef {Array<import("ol/coordinate.js").Coordinate>} LineCoordType
//  */
// /**
//  * Coordinate type when drawing polygons.
//  * @typedef {Array<Array<import("ol/coordinate.js").Coordinate>>} PolyCoordType
//  */
// /**
//  * Types used for drawing coordinates.
//  * @typedef {PointCoordType|LineCoordType|PolyCoordType} SketchCoordType
//  */
// /**
//  * Function that takes an array of coordinates and an optional existing geometry
//  * and a projection as arguments, and returns a geometry. The optional existing
//  * geometry is the geometry that is returned when the function is called without
//  * a second argument.
//  * @typedef {function(!SketchCoordType, import("ol/geom/SimpleGeometry.js").default,
//  *     import("ol/proj/Projection.js").default):
//  *     import("ol/geom/SimpleGeometry.js").default} GeometryFunction
//  */
// /**
//  * Draw mode.  This collapses multi-part geometry types with their single-part
//  * cousins.
//  * @enum {string}
//  */
// var Mode = {
//   POINT: "Point",
//   LINE_STRING: "LineString",
//   POLYGON: "Polygon",
//   CIRCLE: "Circle",
// };
// /**
//  * @enum {string}
//  */
// var DrawEventType = {
//   /**
//    * Triggered upon feature draw start
//    * @event DrawEvent#drawstart
//    * @api
//    */
//   DRAWSTART: "drawstart",
//   /**
//    * Triggered upon feature draw end
//    * @event DrawEvent#drawend
//    * @api
//    */
//   DRAWEND: "drawend",
//   /**
//    * Triggered upon feature draw abortion
//    * @event DrawEvent#drawabort
//    * @api
//    */
//   DRAWABORT: "drawabort",
// };
// /**
//  * @classdesc
//  * Events emitted by {@link module:ol/interaction/Draw~Draw} instances are
//  * instances of this type.
//  */
// var DrawEvent = /** @class */ (function (_super) {
//   __extends(DrawEvent, _super);
//   /**
//    * @param {DrawEventType} type Type.
//    * @param {Feature} feature The feature drawn.
//    */
//   function DrawEvent(type, feature) {
//     var _this = _super.call(this, type) || this;
//     /**
//      * The feature being drawn.
//      * @type {Feature}
//      * @api
//      */
//     _this.feature = feature;
//     return _this;
//   }
//   return DrawEvent;
// })(Event);
// export {
//   DrawEvent
// };
// /***
//  * @template Return
//  * @typedef {import("ol/Observable").OnSignature<import("ol/Observable").EventTypes, import("ol/events/Event.js").default, Return> &
//  *   import("ol/Observable").OnSignature<import("ol/ObjectEventType").Types|
//  *     'change:active', import("ol/Object").ObjectEvent, Return> &
//  *   import("ol/Observable").OnSignature<'drawabort'|'drawend'|'drawstart', DrawEvent, Return> &
//  *   import("ol/Observable").CombinedOnSignature<import("ol/Observable").EventTypes|import("ol/ObjectEventType").Types|
//  *     'change:active'|'drawabort'|'drawend'|'drawstart', Return>} DrawOnSignature
//  */
// /**
//  * @classdesc
//  * Interaction for drawing feature geometries.
//  *
//  * @fires DrawEvent
//  * @api
//  */
// var Draw = /** @class */ (function (_super) {
//   __extends(Draw, _super);
//   /**
//    * @param {Options} options Options.
//    */
//   function Draw(options) {
//     var _this = this;
//     var pointerOptions = /** @type {import("./Pointer.js").Options} */ (
//       options
//     );
//     if (!pointerOptions.stopDown) {
//       pointerOptions.stopDown = FALSE;
//     }
//     _this = _super.call(this, pointerOptions) || this;
//     /***
//      * @type {DrawOnSignature<import("ol/events").EventsKey>}
//      */
//     _this.coordinate = options.coordinate;
//     /***
//      * 输出坐标
//      */
//     _this.coordinateOver = options.coordinateOver;
//     /***
//      * 结束绘画
//      */
//     _this.overDraw = false;
//     /***
//      * 控制结束绘画
//      */
//     _this.isPoint = options.isPoint;
//     /***
//      * 是否是点
//      */
//     _this.coordinateOverPoint = options.coordinateOverPoint;
//     /***
//      * 输出点
//      */
//     _this.on;
//     /***
//      * @type {DrawOnSignature<import("ol/events").EventsKey>}
//      */
//     _this.once;
//     /***
//      * @type {DrawOnSignature<void>}
//      */
//     _this.un;
//     /**
//      * @type {boolean}
//      * @private
//      */
//     _this.shouldHandle_ = false;
//     /**
//      * @type {import("ol/pixel.js").Pixel}
//      * @private
//      */
//     _this.downPx_ = null;
//     /**
//      * @type {?}
//      * @private
//      */
//     _this.downTimeout_;
//     /**
//      * @type {number|undefined}
//      * @private
//      */
//     _this.lastDragTime_;
//     /**
//      * Pointer type of the last pointermove event
//      * @type {string}
//      * @private
//      */
//     _this.pointerType_;
//     /**
//      * @type {boolean}
//      * @private
//      */
//     _this.freehand_ = false;
//     /**
//      * Target source for drawn features.
//      * @type {VectorSource}
//      * @private
//      */
//     _this.source_ = options.source ? options.source : null;
//     /**
//      * Target collection for drawn features.
//      * @type {import("ol/Collection.js").default<Feature>}
//      * @private
//      */
//     _this.features_ = options.features ? options.features : null;
//     /**
//      * Pixel distance for snapping.
//      * @type {number}
//      * @private
//      */
//     _this.snapTolerance_ = options.snapTolerance ? options.snapTolerance : 12;
//     /**
//      * Geometry type.
//      * @type {import("ol/geom/GeometryType.js").default}
//      * @private
//      */
//     _this.type_ = /** @type {import("ol/geom/GeometryType.js").default} */ (
//       options.type
//     );
//     /**
//      * Drawing mode (derived from geometry type.
//      * @type {Mode}
//      * @private
//      */
//     _this.mode_ = getMode(_this.type_);
//     /**
//      * Stop click, singleclick, and doubleclick events from firing during drawing.
//      * Default is `false`.
//      * @type {boolean}
//      * @private
//      */
//     _this.stopClick_ = !!options.stopClick;
//     /**
//      * The number of points that must be drawn before a polygon ring or line
//      * string can be finished.  The default is 3 for polygon rings and 2 for
//      * line strings.
//      * @type {number}
//      * @private
//      */
//     _this.minPoints_ = options.minPoints ?
//       options.minPoints :
//       _this.mode_ === Mode.POLYGON ?
//       3 :
//       2;
//     /**
//      * The number of points that can be drawn before a polygon ring or line string
//      * is finished. The default is no restriction.
//      * @type {number}
//      * @private
//      */
//     _this.maxPoints_ =
//       _this.mode_ === Mode.CIRCLE ?
//       2 :
//       options.maxPoints ?
//       options.maxPoints :
//       Infinity;
//     /**
//      * A function to decide if a potential finish coordinate is permissible
//      * @private
//      * @type {import("ol/events/condition.js").Condition}
//      */
//     _this.finishCondition_ = options.finishCondition ?
//       options.finishCondition :
//       TRUE;
//     var geometryFunction = options.geometryFunction;
//     if (!geometryFunction) {
//       var mode_1 = _this.mode_;
//       if (mode_1 === Mode.CIRCLE) {
//         /**
//          * @param {!LineCoordType} coordinates The coordinates.
//          * @param {import("ol/geom/SimpleGeometry.js").default|undefined} geometry Optional geometry.
//          * @param {import("ol/proj/Projection.js").default} projection The view projection.
//          * @return {import("ol/geom/SimpleGeometry.js").default} A geometry.
//          */
//         geometryFunction = function (coordinates, geometry, projection) {
//           var circle = geometry ?
//             /** @type {Circle} */
//             (geometry) :
//             new Circle([NaN, NaN]);
//           var center = fromUserCoordinate(coordinates[0], projection);
//           var squaredLength = squaredCoordinateDistance(
//             center,
//             fromUserCoordinate(coordinates[coordinates.length - 1], projection)
//           );
//           circle.setCenterAndRadius(center, Math.sqrt(squaredLength));
//           var userProjection = getUserProjection();
//           if (userProjection) {
//             circle.transform(projection, userProjection);
//           }
//           return circle;
//         };
//       } else {
//         var Constructor_1;
//         if (mode_1 === Mode.POINT) {
//           Constructor_1 = Point;
//         } else if (mode_1 === Mode.LINE_STRING) {
//           Constructor_1 = LineString;
//         } else if (mode_1 === Mode.POLYGON) {
//           Constructor_1 = Polygon;
//         }
//         /**
//          * @param {!LineCoordType} coordinates The coordinates.
//          * @param {import("ol/geom/SimpleGeometry.js").default|undefined} geometry Optional geometry.
//          * @param {import("ol/proj/Projection.js").default} projection The view projection.
//          * @return {import("ol/geom/SimpleGeometry.js").default} A geometry.
//          */
//         geometryFunction = function (coordinates, geometry, projection) {
//           if (geometry) {
//             if (mode_1 === Mode.POLYGON) {
//               if (coordinates[0].length) {
//                 // Add a closing coordinate to match the first
//                 geometry.setCoordinates([
//                   coordinates[0].concat([coordinates[0][0]]),
//                 ]);
//               } else {
//                 geometry.setCoordinates([]);
//               }
//             } else {
//               geometry.setCoordinates(coordinates);
//             }
//           } else {
//             geometry = new Constructor_1(coordinates);
//           }
//           return geometry;
//         };
//       }
//     }
//     /**
//      * @type {GeometryFunction}
//      * @private
//      */
//     _this.geometryFunction_ = geometryFunction;
//     /**
//      * @type {number}
//      * @private
//      */
//     _this.dragVertexDelay_ =
//       options.dragVertexDelay !== undefined ? options.dragVertexDelay : 500;
//     /**
//      * Finish coordinate for the feature (first point for polygons, last point for
//      * linestrings).
//      * @type {import("ol/coordinate.js").Coordinate}
//      * @private
//      */
//     _this.finishCoordinate_ = null;
//     /**
//      * Sketch feature.
//      * @type {Feature}
//      * @private
//      */
//     _this.sketchFeature_ = null;
//     /**
//      * Sketch point.
//      * @type {Feature<Point>}
//      * @private
//      */
//     _this.sketchPoint_ = null;
//     /**
//      * Sketch coordinates. Used when drawing a line or polygon.
//      * @type {SketchCoordType}
//      * @private
//      */
//     _this.sketchCoords_ = null;
//     /**
//      * Sketch line. Used when drawing polygon.
//      * @type {Feature<LineString>}
//      * @private
//      */
//     _this.sketchLine_ = null;
//     /**
//      * Sketch line coordinates. Used when drawing a polygon or circle.
//      * @type {LineCoordType}
//      * @private
//      */
//     _this.sketchLineCoords_ = null;
//     /**
//      * Squared tolerance for handling up events.  If the squared distance
//      * between a down and up event is greater than this tolerance, up events
//      * will not be handled.
//      * @type {number}
//      * @private
//      */
//     _this.squaredClickTolerance_ = options.clickTolerance ?
//       options.clickTolerance * options.clickTolerance :
//       36;
//     /**
//      * Draw overlay where our sketch features are drawn.
//      * @type {VectorLayer}
//      * @private
//      */
//     _this.overlay_ = new VectorLayer({
//       source: new VectorSource({
//         useSpatialIndex: false,
//         wrapX: options.wrapX ? options.wrapX : false,
//       }),
//       style: options.style ? options.style : getDefaultStyleFunction(),
//       updateWhileInteracting: true,
//     });
//     /**
//      * Name of the geometry attribute for newly created features.
//      * @type {string|undefined}
//      * @private
//      */
//     _this.geometryName_ = options.geometryName;
//     /**
//      * @private
//      * @type {import("ol/events/condition.js").Condition}
//      */
//     _this.condition_ = options.condition ? options.condition : noModifierKeys;
//     /**
//      * @private
//      * @type {import("ol/events/condition.js").Condition}
//      */
//     _this.freehandCondition_;
//     if (options.freehand) {
//       _this.freehandCondition_ = always;
//     } else {
//       _this.freehandCondition_ = options.freehandCondition ?
//         options.freehandCondition :
//         shiftKeyOnly;
//     }
//     _this.addChangeListener(InteractionProperty.ACTIVE, _this.updateState_);
//     return _this;
//   }
//   /**
//    * Remove the interaction from its current map and attach it to the new map.
//    * Subclasses may set up event handlers to get notified about changes to
//    * the map here.
//    * @param {import("ol/PluggableMap.js").default} map Map.
//    */
//   Draw.prototype.setMap = function (map) {
//     _super.prototype.setMap.call(this, map);
//     this.updateState_();
//   };
//   /**
//    * Get the overlay layer that this interaction renders sketch features to.
//    * @return {VectorLayer} Overlay layer.
//    * @api
//    */
//   Draw.prototype.getOverlay = function () {
//     return this.overlay_;
//   };
//   /**
//    * Handles the {@link module:ol/MapBrowserEvent map browser event} and may actually draw or finish the drawing.
//    * @param {import("ol/MapBrowserEvent.js").default} event Map browser event.
//    * @return {boolean} `false` to stop event propagation.
//    * @api
//    */
//   Draw.prototype.controlDrawing = function (val) {
//     this.overDraw = val;
//   };

//   Draw.prototype.handleEvent = function (event) {
//     if (event.originalEvent.type === EventType.CONTEXTMENU) {
//       // Avoid context menu for long taps when drawing on mobile
//       event.originalEvent.preventDefault();
//     }
//     this.freehand_ =
//       this.mode_ !== Mode.POINT && this.freehandCondition_(event);
//     var move = event.type === MapBrowserEventType.POINTERMOVE;
//     var pass = true;
//     if (
//       !this.freehand_ &&
//       this.lastDragTime_ &&
//       event.type === MapBrowserEventType.POINTERDRAG
//     ) {
//       var now = Date.now();
//       if (now - this.lastDragTime_ >= this.dragVertexDelay_) {
//         this.downPx_ = event.pixel;
//         this.shouldHandle_ = !this.freehand_;
//         move = true;
//       } else {
//         this.lastDragTime_ = undefined;
//       }
//       if (this.shouldHandle_ && this.downTimeout_ !== undefined) {
//         clearTimeout(this.downTimeout_);
//         this.downTimeout_ = undefined;
//       }
//     }
//     if (
//       this.freehand_ &&
//       event.type === MapBrowserEventType.POINTERDRAG &&
//       this.sketchFeature_ !== null
//     ) {
//       if (this.overDraw) {
//         return;
//       }
//       this.addToDrawing_(event.coordinate);
//       pass = false;
//     } else if (
//       this.freehand_ &&
//       event.type === MapBrowserEventType.POINTERDOWN
//     ) {
//       pass = false;
//     } else if (move && this.getPointerCount() < 2) {
//       pass = event.type === MapBrowserEventType.POINTERMOVE;
//       if (pass && this.freehand_) {
//         if (this.overDraw) {
//           return;
//         }
//         this.handlePointerMove_(event);
//         if (this.shouldHandle_) {
//           // Avoid page scrolling when freehand drawing on mobile
//           event.originalEvent.preventDefault();
//         }
//       } else if (
//         event.originalEvent.pointerType === "mouse" ||
//         (event.type === MapBrowserEventType.POINTERDRAG &&
//           this.downTimeout_ === undefined)
//       ) {
//         if (this.overDraw) {
//           return;
//         }
//         this.handlePointerMove_(event);
//       }
//     } else if (event.type === MapBrowserEventType.DBLCLICK) {
//       pass = false;
//     }
//     return _super.prototype.handleEvent.call(this, event) && pass;
//   };
//   /**
//    * Handle pointer down events.
//    * @param {import("ol/MapBrowserEvent.js").default} event Event.
//    * @return {boolean} If the event was consumed.
//    */
//   Draw.prototype.handleDownEvent = function (event) {
//     // console.log(event.coordinate_, 'handleDownEvent')
//     this.shouldHandle_ = !this.freehand_;
//     if (this.freehand_) {
//       this.downPx_ = event.pixel;
//       if (!this.finishCoordinate_) {
//         this.startDrawing_(event.coordinate);
//       }
//       return true;
//     } else if (this.condition_(event)) {
//       this.lastDragTime_ = Date.now();
//       this.downTimeout_ = setTimeout(
//         function () {
//           this.handlePointerMove_(
//             new MapBrowserEvent(
//               MapBrowserEventType.POINTERMOVE,
//               event.map,
//               event.originalEvent,
//               false,
//               event.frameState
//             )
//           );
//         }.bind(this),
//         this.dragVertexDelay_
//       );
//       this.downPx_ = event.pixel;
//       return true;
//     } else {
//       this.lastDragTime_ = undefined;
//       return false;
//     }
//   };
//   /**
//    * Handle pointer up events.
//    * @param {import("ol/MapBrowserEvent.js").default} event Event.
//    * @return {boolean} If the event was consumed.
//    */
//   Draw.prototype.handleUpEvent = function (event) {
//     // console.log(event.coordinate_, 'handleUpEvent')//获取坐标点
//     if (this.isPoint) {
//       this.coordinateOverPoint(event);
//       this.finishDrawing();
//       return;
//     }
//     var pass = true;
//     if (this.getPointerCount() === 0) {
//       if (this.downTimeout_) {
//         clearTimeout(this.downTimeout_);
//         this.downTimeout_ = undefined;
//       }
//       this.handlePointerMove_(event);
//       if (this.shouldHandle_) {
//         var startingToDraw = !this.finishCoordinate_;
//         if (startingToDraw) {
//           //开始后抬起
//           // this.coordinateOverPoint(event);
//           // console.log(1)
//           this.coordinate(event);
//           this.startDrawing_(event.coordinate);
//         }
//         if (!startingToDraw && this.freehand_) {
//           this.finishDrawing();
//         } else if (
//           !this.freehand_ &&
//           (!startingToDraw || this.mode_ === Mode.POINT)
//         ) {
//           //选择后抬起
//           this.coordinate(event);
//           if (this.atFinish_(event.pixel)) {
//             //结束绘画
//             this.coordinateOver("结束");
//             if (this.finishCondition_(event)) {
//               this.finishDrawing();
//             }
//           } else {
//             // console.log(28888888888)
//             this.addToDrawing_(event.coordinate);
//           }
//         }
//         pass = false;
//       } else if (this.freehand_) {
//         this.abortDrawing();
//       }
//     }
//     if (!pass && this.stopClick_) {
//       event.preventDefault();
//     }
//     return pass;
//   };
//   // Draw.prototype.getCoordinate = function (fn) {
//   //     this.coordinate = fn;
//   //     console.log(this.coordinate)
//   // }
//   /**
//    * Handle move events.
//    * @param {import("ol/MapBrowserEvent.js").default} event A move event.
//    * @private
//    */
//   Draw.prototype.handlePointerMove_ = function (event) {
//     this.pointerType_ = event.originalEvent.pointerType;
//     if (
//       this.downPx_ &&
//       ((!this.freehand_ && this.shouldHandle_) ||
//         (this.freehand_ && !this.shouldHandle_))
//     ) {
//       var downPx = this.downPx_;
//       var clickPx = event.pixel;
//       var dx = downPx[0] - clickPx[0];
//       var dy = downPx[1] - clickPx[1];
//       var squaredDistance = dx * dx + dy * dy;
//       this.shouldHandle_ = this.freehand_ ?
//         squaredDistance > this.squaredClickTolerance_ :
//         squaredDistance <= this.squaredClickTolerance_;
//       if (!this.shouldHandle_) {
//         return;
//       }
//     }
//     if (this.finishCoordinate_) {
//       this.modifyDrawing_(event.coordinate);
//     } else {
//       this.createOrUpdateSketchPoint_(event.coordinate.slice());
//     }
//   };
//   /**
//    * Determine if an event is within the snapping tolerance of the start coord.
//    * @param {import("ol/pixel.js").Pixel} pixel Pixel.
//    * @return {boolean} The event is within the snapping tolerance of the start.
//    * @private
//    */
//   Draw.prototype.atFinish_ = function (pixel) {
//     // console.log(pixel, 879789)
//     var at = false;
//     if (this.sketchFeature_) {
//       var potentiallyDone = false;
//       var potentiallyFinishCoordinates = [this.finishCoordinate_];
//       var mode = this.mode_;
//       if (mode === Mode.POINT) {
//         at = true;
//       } else if (mode === Mode.CIRCLE) {
//         at = this.sketchCoords_.length === 2;
//       } else if (mode === Mode.LINE_STRING) {
//         potentiallyDone = this.sketchCoords_.length > this.minPoints_;
//       } else if (mode === Mode.POLYGON) {
//         var sketchCoords = /** @type {PolyCoordType} */ (this.sketchCoords_);
//         potentiallyDone = sketchCoords[0].length > this.minPoints_;
//         potentiallyFinishCoordinates = [
//           sketchCoords[0][0],
//           sketchCoords[0][sketchCoords[0].length - 2],
//         ];
//       }
//       if (potentiallyDone) {
//         var map = this.getMap();
//         for (var i = 0, ii = potentiallyFinishCoordinates.length; i < ii; i++) {
//           var finishCoordinate = potentiallyFinishCoordinates[i];
//           var finishPixel = map.getPixelFromCoordinate(finishCoordinate);
//           var dx = pixel[0] - finishPixel[0];
//           var dy = pixel[1] - finishPixel[1];
//           var snapTolerance = this.freehand_ ? 1 : this.snapTolerance_;
//           at = Math.sqrt(dx * dx + dy * dy) <= snapTolerance;
//           if (at) {
//             this.finishCoordinate_ = finishCoordinate;
//             break;
//           }
//         }
//       }
//     }
//     return at;
//   };
//   /**
//    * @param {import("ol/coordinate").Coordinate} coordinates Coordinate.
//    * @private
//    */
//   Draw.prototype.createOrUpdateSketchPoint_ = function (coordinates) {
//     if (!this.sketchPoint_) {
//       this.sketchPoint_ = new Feature(new Point(coordinates));
//       this.updateSketchFeatures_();
//     } else {
//       var sketchPointGeom = this.sketchPoint_.getGeometry();
//       sketchPointGeom.setCoordinates(coordinates);
//     }
//   };
//   /**
//    * @param {import("ol/geom/Polygon.js").default} geometry Polygon geometry.
//    * @private
//    */
//   Draw.prototype.createOrUpdateCustomSketchLine_ = function (geometry) {
//     if (!this.sketchLine_) {
//       this.sketchLine_ = new Feature();
//     }
//     var ring = geometry.getLinearRing(0);
//     var sketchLineGeom = this.sketchLine_.getGeometry();
//     if (!sketchLineGeom) {
//       sketchLineGeom = new LineString(
//         ring.getFlatCoordinates(),
//         ring.getLayout()
//       );
//       this.sketchLine_.setGeometry(sketchLineGeom);
//     } else {
//       sketchLineGeom.setFlatCoordinates(
//         ring.getLayout(),
//         ring.getFlatCoordinates()
//       );
//       sketchLineGeom.changed();
//     }
//   };
//   /**
//    * Start the drawing.
//    * @param {import("ol/coordinate.js").Coordinate} start Start coordinate.
//    * @private
//    */
//   Draw.prototype.startDrawing_ = function (start) {
//     if (this.overDraw) {
//       return;
//     }
//     var projection = this.getMap().getView().getProjection();
//     this.finishCoordinate_ = start;
//     if (this.mode_ === Mode.POINT) {
//       this.sketchCoords_ = start.slice();
//     } else if (this.mode_ === Mode.POLYGON) {
//       this.sketchCoords_ = [
//         [start.slice(), start.slice()]
//       ];
//       this.sketchLineCoords_ = this.sketchCoords_[0];
//     } else {
//       this.sketchCoords_ = [start.slice(), start.slice()];
//     }
//     if (this.sketchLineCoords_) {
//       this.sketchLine_ = new Feature(new LineString(this.sketchLineCoords_));
//     }
//     var geometry = this.geometryFunction_(
//       this.sketchCoords_,
//       undefined,
//       projection
//     );
//     this.sketchFeature_ = new Feature();
//     if (this.geometryName_) {
//       this.sketchFeature_.setGeometryName(this.geometryName_);
//     }
//     this.sketchFeature_.setGeometry(geometry);
//     this.updateSketchFeatures_();
//     this.dispatchEvent(
//       new DrawEvent(DrawEventType.DRAWSTART, this.sketchFeature_)
//     );
//   };
//   /**
//    * Modify the drawing.
//    * @param {import("ol/coordinate.js").Coordinate} coordinate Coordinate.
//    * @private
//    */
//   Draw.prototype.modifyDrawing_ = function (coordinate) {
//     var map = this.getMap();
//     var geometry = this.sketchFeature_.getGeometry();
//     var projection = map.getView().getProjection();
//     var coordinates, last;
//     if (this.mode_ === Mode.POINT) {
//       last = this.sketchCoords_;
//     } else if (this.mode_ === Mode.POLYGON) {
//       coordinates = /** @type {PolyCoordType} */ (this.sketchCoords_)[0];
//       last = coordinates[coordinates.length - 1];
//       if (this.atFinish_(map.getPixelFromCoordinate(coordinate))) {
//         // snap to finish
//         coordinate = this.finishCoordinate_.slice();
//       }
//     } else {
//       coordinates = this.sketchCoords_;
//       last = coordinates[coordinates.length - 1];
//     }
//     last[0] = coordinate[0];
//     last[1] = coordinate[1];
//     this.geometryFunction_(
//       /** @type {!LineCoordType} */
//       (this.sketchCoords_),
//       geometry,
//       projection
//     );
//     if (this.sketchPoint_) {
//       var sketchPointGeom = this.sketchPoint_.getGeometry();
//       sketchPointGeom.setCoordinates(coordinate);
//     }
//     if (
//       geometry.getType() === GeometryType.POLYGON &&
//       this.mode_ !== Mode.POLYGON
//     ) {
//       this.createOrUpdateCustomSketchLine_( /** @type {Polygon} */ (geometry));
//     } else if (this.sketchLineCoords_) {
//       var sketchLineGeom = this.sketchLine_.getGeometry();
//       sketchLineGeom.setCoordinates(this.sketchLineCoords_);
//     }
//     this.updateSketchFeatures_();
//   };
//   /**
//    * Add a new coordinate to the drawing.
//    * @param {!PointCoordType} coordinate Coordinate
//    * @private
//    */
//   Draw.prototype.addToDrawing_ = function (coordinate) {
//     var geometry = this.sketchFeature_.getGeometry();
//     var projection = this.getMap().getView().getProjection();
//     var done;
//     var coordinates;
//     var mode = this.mode_;
//     if (mode === Mode.LINE_STRING || mode === Mode.CIRCLE) {
//       this.finishCoordinate_ = coordinate.slice();
//       coordinates = /** @type {LineCoordType} */ (this.sketchCoords_);
//       if (coordinates.length >= this.maxPoints_) {
//         if (this.freehand_) {
//           coordinates.pop();
//         } else {
//           done = true;
//         }
//       }
//       coordinates.push(coordinate.slice());
//       this.geometryFunction_(coordinates, geometry, projection);
//     } else if (mode === Mode.POLYGON) {
//       coordinates = /** @type {PolyCoordType} */ (this.sketchCoords_)[0];
//       if (coordinates.length >= this.maxPoints_) {
//         if (this.freehand_) {
//           coordinates.pop();
//         } else {
//           done = true;
//         }
//       }
//       coordinates.push(coordinate.slice());
//       if (done) {
//         this.finishCoordinate_ = coordinates[0];
//       }
//       this.geometryFunction_(this.sketchCoords_, geometry, projection);
//     }
//     this.createOrUpdateSketchPoint_(coordinate.slice());
//     this.updateSketchFeatures_();
//     if (done) {
//       this.finishDrawing();
//     }
//   };
//   /**
//    * Remove last point of the feature currently being drawn. Does not do anything when
//    * drawing POINT or MULTI_POINT geometries.
//    * @api
//    */
//   Draw.prototype.removeLastPoint = function () {
//     if (!this.sketchFeature_) {
//       return;
//     }
//     var geometry = this.sketchFeature_.getGeometry();
//     var projection = this.getMap().getView().getProjection();
//     var coordinates;
//     var mode = this.mode_;
//     if (mode === Mode.LINE_STRING || mode === Mode.CIRCLE) {
//       coordinates = /** @type {LineCoordType} */ (this.sketchCoords_);
//       coordinates.splice(-2, 1);
//       if (coordinates.length >= 2) {
//         this.finishCoordinate_ = coordinates[coordinates.length - 2].slice();
//         var finishCoordinate = this.finishCoordinate_.slice();
//         coordinates[coordinates.length - 1] = finishCoordinate;
//         this.createOrUpdateSketchPoint_(finishCoordinate);
//       }
//       this.geometryFunction_(coordinates, geometry, projection);
//       if (geometry.getType() === GeometryType.POLYGON && this.sketchLine_) {
//         this.createOrUpdateCustomSketchLine_( /** @type {Polygon} */ (geometry));
//       }
//     } else if (mode === Mode.POLYGON) {
//       coordinates = /** @type {PolyCoordType} */ (this.sketchCoords_)[0];
//       coordinates.splice(-2, 1);
//       var sketchLineGeom = this.sketchLine_.getGeometry();
//       if (coordinates.length >= 2) {
//         var finishCoordinate = coordinates[coordinates.length - 2].slice();
//         coordinates[coordinates.length - 1] = finishCoordinate;
//         this.createOrUpdateSketchPoint_(finishCoordinate);
//       }
//       sketchLineGeom.setCoordinates(coordinates);
//       this.geometryFunction_(this.sketchCoords_, geometry, projection);
//     }
//     if (coordinates.length === 1) {
//       this.abortDrawing();
//     }
//     this.updateSketchFeatures_();
//   };
//   /**
//    * Stop drawing and add the sketch feature to the target layer.
//    * The {@link module:ol/interaction/Draw~DrawEventType.DRAWEND} event is
//    * dispatched before inserting the feature.
//    * @api
//    */
//   Draw.prototype.finishDrawing = function () {
//     // console.log("finishDrawing")
//     var sketchFeature = this.abortDrawing_();
//     if (!sketchFeature) {
//       return;
//     }
//     var coordinates = this.sketchCoords_;
//     var geometry = sketchFeature.getGeometry();
//     var projection = this.getMap().getView().getProjection();
//     if (this.mode_ === Mode.LINE_STRING) {
//       // remove the redundant last point
//       coordinates.pop();
//       this.geometryFunction_(coordinates, geometry, projection);
//     } else if (this.mode_ === Mode.POLYGON) {
//       // remove the redundant last point in ring
//       /** @type {PolyCoordType} */
//       (coordinates)[0].pop();
//       this.geometryFunction_(coordinates, geometry, projection);
//       coordinates = geometry.getCoordinates();
//     }
//     // cast multi-part geometries
//     if (this.type_ === GeometryType.MULTI_POINT) {
//       sketchFeature.setGeometry(
//         new MultiPoint([ /** @type {PointCoordType} */ (coordinates)])
//       );
//     } else if (this.type_ === GeometryType.MULTI_LINE_STRING) {
//       sketchFeature.setGeometry(
//         new MultiLineString([ /** @type {LineCoordType} */ (coordinates)])
//       );
//     } else if (this.type_ === GeometryType.MULTI_POLYGON) {
//       sketchFeature.setGeometry(
//         new MultiPolygon([ /** @type {PolyCoordType} */ (coordinates)])
//       );
//     }
//     // First dispatch event to allow full set up of feature
//     this.dispatchEvent(new DrawEvent(DrawEventType.DRAWEND, sketchFeature));
//     // Then insert feature
//     if (this.features_) {
//       this.features_.push(sketchFeature);
//     }
//     if (this.source_) {
//       this.source_.addFeature(sketchFeature);
//     }
//   };
//   /**
//    * Stop drawing without adding the sketch feature to the target layer.
//    * @return {Feature} The sketch feature (or null if none).
//    * @private
//    */
//   Draw.prototype.abortDrawing_ = function () {
//     this.finishCoordinate_ = null;
//     var sketchFeature = this.sketchFeature_;
//     this.sketchFeature_ = null;
//     this.sketchPoint_ = null;
//     this.sketchLine_ = null;
//     this.overlay_.getSource().clear(true);
//     return sketchFeature;
//   };
//   /**
//    * Stop drawing without adding the sketch feature to the target layer.
//    * @api
//    */
//   Draw.prototype.abortDrawing = function () {
//     var sketchFeature = this.abortDrawing_();
//     if (sketchFeature) {
//       this.dispatchEvent(new DrawEvent(DrawEventType.DRAWABORT, sketchFeature));
//     }
//   };
//   /**
//    * Append coordinates to the end of the geometry that is currently being drawn.
//    * This can be used when drawing LineStrings or Polygons. Coordinates will
//    * either be appended to the current LineString or the outer ring of the current
//    * Polygon. If no geometry is being drawn, a new one will be created.
//    * @param {!LineCoordType} coordinates Linear coordinates to be appended to
//    * the coordinate array.
//    * @api
//    */
//   Draw.prototype.appendCoordinates = function (coordinates) {
//     var mode = this.mode_;
//     var newDrawing = !this.sketchFeature_;
//     if (newDrawing) {
//       this.startDrawing_(coordinates[0]);
//     }
//     /** @type {LineCoordType} */
//     var sketchCoords;
//     if (mode === Mode.LINE_STRING || mode === Mode.CIRCLE) {
//       sketchCoords = /** @type {LineCoordType} */ (this.sketchCoords_);
//     } else if (mode === Mode.POLYGON) {
//       sketchCoords =
//         this.sketchCoords_ && this.sketchCoords_.length ?
//         /** @type {PolyCoordType} */
//         (this.sketchCoords_)[0] : [];
//     } else {
//       return;
//     }
//     if (newDrawing) {
//       sketchCoords.shift();
//     }
//     // Remove last coordinate from sketch drawing (this coordinate follows cursor position)
//     sketchCoords.pop();
//     // Append coordinate list
//     for (var i = 0; i < coordinates.length; i++) {
//       this.addToDrawing_(coordinates[i]);
//     }
//     var ending = coordinates[coordinates.length - 1];
//     // Duplicate last coordinate for sketch drawing (cursor position)
//     this.addToDrawing_(ending);
//     this.modifyDrawing_(ending);
//   };
//   /**
//    * Initiate draw mode by starting from an existing geometry which will
//    * receive new additional points. This only works on features with
//    * `LineString` geometries, where the interaction will extend lines by adding
//    * points to the end of the coordinates array.
//    * This will change the original feature, instead of drawing a copy.
//    *
//    * The function will dispatch a `drawstart` event.
//    *
//    * @param {!Feature<LineString>} feature Feature to be extended.
//    * @api
//    */
//   Draw.prototype.extend = function (feature) {
//     var geometry = feature.getGeometry();
//     var lineString = geometry;
//     this.sketchFeature_ = feature;
//     this.sketchCoords_ = lineString.getCoordinates();
//     var last = this.sketchCoords_[this.sketchCoords_.length - 1];
//     this.finishCoordinate_ = last.slice();
//     this.sketchCoords_.push(last.slice());
//     this.sketchPoint_ = new Feature(new Point(last));
//     this.updateSketchFeatures_();
//     this.dispatchEvent(
//       new DrawEvent(DrawEventType.DRAWSTART, this.sketchFeature_)
//     );
//   };
//   /**
//    * Redraw the sketch features.
//    * @private
//    */
//   Draw.prototype.updateSketchFeatures_ = function () {
//     var sketchFeatures = [];
//     if (this.sketchFeature_) {
//       sketchFeatures.push(this.sketchFeature_);
//     }
//     if (this.sketchLine_) {
//       sketchFeatures.push(this.sketchLine_);
//     }
//     if (this.sketchPoint_) {
//       sketchFeatures.push(this.sketchPoint_);
//     }
//     var overlaySource = this.overlay_.getSource();
//     overlaySource.clear(true);
//     overlaySource.addFeatures(sketchFeatures);
//   };
//   /**
//    * @private
//    */
//   Draw.prototype.updateState_ = function () {
//     var map = this.getMap();
//     var active = this.getActive();
//     if (!map || !active) {
//       this.abortDrawing();
//     }
//     this.overlay_.setMap(active ? map : null);
//   };
//   return Draw;
// })(PointerInteraction);
// /**
//  * @return {import("ol/style/Style.js").StyleFunction} Styles.
//  */
// function getDefaultStyleFunction() {
//   var styles = createEditingStyle();
//   return function (feature, resolution) {
//     return styles[feature.getGeometry().getType()];
//   };
// }
// /**
//  * Create a `geometryFunction` for `type: 'Circle'` that will create a regular
//  * polygon with a user specified number of sides and start angle instead of a
//  * `import("ol/geom/Circle.js").Circle` geometry.
//  * @param {number} [opt_sides] Number of sides of the regular polygon.
//  *     Default is 32.
//  * @param {number} [opt_angle] Angle of the first point in counter-clockwise
//  *     radians. 0 means East.
//  *     Default is the angle defined by the heading from the center of the
//  *     regular polygon to the current pointer position.
//  * @return {GeometryFunction} Function that draws a polygon.
//  * @api
//  */
// export function createRegularPolygon(opt_sides, opt_angle) {
//   return function (coordinates, opt_geometry, projection) {
//     var center = fromUserCoordinate(
//       /** @type {LineCoordType} */
//       (coordinates)[0],
//       projection
//     );
//     var end = fromUserCoordinate(
//       /** @type {LineCoordType} */
//       (coordinates)[coordinates.length - 1],
//       projection
//     );
//     var radius = Math.sqrt(squaredCoordinateDistance(center, end));
//     var geometry = opt_geometry ?
//       /** @type {Polygon} */
//       (opt_geometry) :
//       fromCircle(new Circle(center), opt_sides);
//     var angle = opt_angle;
//     if (!opt_angle && opt_angle !== 0) {
//       var x = end[0] - center[0];
//       var y = end[1] - center[1];
//       angle = Math.atan2(y, x);
//     }
//     makeRegular(geometry, center, radius, angle);
//     var userProjection = getUserProjection();
//     if (userProjection) {
//       geometry.transform(projection, userProjection);
//     }
//     return geometry;
//   };
// }
// /**
//  * Create a `geometryFunction` that will create a box-shaped polygon (aligned
//  * with the coordinate system axes).  Use this with the draw interaction and
//  * `type: 'Circle'` to return a box instead of a circle geometry.
//  * @return {GeometryFunction} Function that draws a box-shaped polygon.
//  * @api
//  */
// export function createBox() {
//   return function (coordinates, opt_geometry, projection) {
//     var extent = boundingExtent(
//       /** @type {LineCoordType} */
//       ([
//         coordinates[0],
//         coordinates[coordinates.length - 1],
//       ]).map(function (coordinate) {
//         return fromUserCoordinate(coordinate, projection);
//       })
//     );
//     var boxCoordinates = [
//       [
//         getBottomLeft(extent),
//         getBottomRight(extent),
//         getTopRight(extent),
//         getTopLeft(extent),
//         getBottomLeft(extent),
//       ],
//     ];
//     var geometry = opt_geometry;
//     if (geometry) {
//       geometry.setCoordinates(boxCoordinates);
//     } else {
//       geometry = new Polygon(boxCoordinates);
//     }
//     var userProjection = getUserProjection();
//     if (userProjection) {
//       geometry.transform(projection, userProjection);
//     }
//     return geometry;
//   };
// }
// /**
//  * Get the drawing mode.  The mode for multi-part geometries is the same as for
//  * their single-part cousins.
//  * @param {import("ol/geom/GeometryType.js").default} type Geometry type.
//  * @return {Mode} Drawing mode.
//  */
// function getMode(type) {
//   switch (type) {
//     case GeometryType.POINT:
//     case GeometryType.MULTI_POINT:
//       return Mode.POINT;
//     case GeometryType.LINE_STRING:
//     case GeometryType.MULTI_LINE_STRING:
//       return Mode.LINE_STRING;
//     case GeometryType.POLYGON:
//     case GeometryType.MULTI_POLYGON:
//       return Mode.POLYGON;
//     case GeometryType.CIRCLE:
//       return Mode.CIRCLE;
//     default:
//       throw new Error("Invalid type: " + type);
//   }
// }
// export default Draw;
// //# sourceMappingURL=Draw.js.map