diff options
Diffstat (limited to 'assets/static/vendor/leaflet-elevation/libs/leaflet-edgescale.js')
| -rw-r--r-- | assets/static/vendor/leaflet-elevation/libs/leaflet-edgescale.js | 636 |
1 files changed, 636 insertions, 0 deletions
diff --git a/assets/static/vendor/leaflet-elevation/libs/leaflet-edgescale.js b/assets/static/vendor/leaflet-elevation/libs/leaflet-edgescale.js new file mode 100644 index 0000000..74c672d --- /dev/null +++ b/assets/static/vendor/leaflet-elevation/libs/leaflet-edgescale.js @@ -0,0 +1,636 @@ +/*
+ * Copyright (c) 2023, GPL-3.0+ Project, Raruto
+ *
+ * This file is free software: you may copy, redistribute and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation, either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ *
+ * Copyright (c) GPL-3.0+ Project - 2018- Dražen Tutić - https://github.com/dtutic/Leaflet.EdgeScaleBar
+ * Copyright (c) MIT License (MIT) - 2015- Xisco Guaita - https://github.com/xguaita/Leaflet.MapCenterCoord
+ */
+
+/**
+ * Original source: https://github.com/xguaita/Leaflet.MapCenterCoord
+ */
+L.Control.EdgeScale = L.Control.extend({
+
+ // Defaults
+ options: {
+ position: 'bottomleft',
+ icon: true,
+ coords: true,
+ bar: true,
+ onMove: true,
+ template: '{y} | {x}', // https://en.wikipedia.org/wiki/ISO_6709
+ projected: false,
+ formatProjected: '#.##0,000',
+ latlngFormat: 'DD', // DD, DM, DMS
+ latlngDesignators: true,
+ latLngFormatter: undefined,
+ iconStyle: {
+ background: `url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' xml:space='preserve' viewBox='0 0 100 100'%3E%3Cg stroke='%23fff'%3E%3Ccircle cx='50' cy='50.2' r='3.9' stroke-width='2' /%3E%3Cpath stroke-width='3' d='M5 54h32a4 4 0 1 0 0-8H5a4 4 0 1 0 0 8z M54 5a4 4 0 1 0-8 0v32a4 4 0 1 0 8 0V5z M99 50c0-2-2-4-4-4H63a4 4 0 1 0 0 8h32c2 0 4-1 4-4zM46 95a4 4 0 1 0 8 0V64a4 4 0 1 0-8 0v31z'/%3E%3C/g%3E%3C/svg%3E%0A")`,
+ width: '24px',
+ height: '24px',
+ left: 'calc(50% - 12px)',
+ top: 'calc(50% - 12px)',
+ content: '',
+ display: 'block',
+ position: 'absolute',
+ zIndex: 999,
+ pointerEvents: 'none',
+ },
+ containerStyle: {
+ backgroundColor: 'rgba(255, 255, 255, 0.7)',
+ boxShadow: '0 0 5px #bbb',
+ borderRadius: '3px',
+ padding: '3px 2px',
+ color: '#333',
+ font: '11px/1.5 Consolas, monaco, monospace',
+ writingMode: 'vertical-lr',
+ },
+ },
+
+ initialize: function(options) {
+ L.setOptions(this, options);
+ },
+
+ onAdd: function (map) {
+
+ if (this.options.bar) {
+ this._scaleBar = (new L.Control.EdgeScale.Layer(true === this.options.bar ? {} : this.options.bar)).addTo(map);
+ }
+
+ // create a DOM element and put it into overlayPane
+ if (this.options.icon) {
+ this._icon = L.DomUtil.create('div', 'leaflet-crosshair');
+ Object.assign(this._icon.style, this.options.iconStyle);
+ map.getContainer().insertBefore(this._icon, map.getContainer().firstChild);
+ }
+
+ // Control container
+ this._container = L.DomUtil.create('div', 'leaflet-control-mapcentercoord');
+
+ Object.assign(this._container.style, this.options.containerStyle);
+
+ if (!this.options.coords) {
+ this._container.style.display = 'none';
+ }
+
+ L.DomEvent.disableClickPropagation(this._container);
+
+ this._container.innerHTML = this._getMapCenterCoord();
+
+ // Add events listeners for updating coordinates & icon's position
+ map.on('move', this._onMapMove, this);
+ map.on('moveend', this._onMapMove, this);
+
+ return this._container;
+ },
+
+ onRemove: function (map) {
+ if (this.options.bar) {
+ this._scaleBar.remove();
+ }
+
+ // remove icon's DOM elements and listeners
+ if (this.options.icon) {
+ map.getContainer().removeChild(this._icon);
+ }
+ map.off('move', this._onMapMove, this);
+ map.off('moveend', this._onMapMove, this);
+ },
+
+ // update coordinates
+ _onMapMove: function (e) {
+ if (this.options.onMove || 'moveend' === e.type) {
+ this._container.innerHTML = this._getMapCenterCoord();
+ }
+ },
+
+ _getMapCenterCoord: function () {
+ const center = this._map.getCenter();
+ return this.options.projected
+ ? this._getProjectedCoord(this._map.options.crs.project(center))
+ : this._getLatLngCoord(center);
+ },
+
+ _getProjectedCoord: function (center) {
+ return L.Util.template(
+ this.options.template,
+ {
+ x: this._format(this.options.formatProjected, center.x),
+ y: this._format(this.options.formatProjected, center.y)
+ }
+ );
+ },
+
+ _getLatLngCoord: function (latLng) {
+
+ const { latLngFormatter, latlngFormat, latlngDesignators: designators } = this.options;
+
+ if (undefined !== latLngFormatter ) {
+ return latLngFormatter(latLng.lat, latLng.lng);
+ }
+
+ let lat, lng, deg, min;
+
+ // make a copy of center so we aren't affecting leaflet's internal state
+ let center = {
+ lat: latLng.lat,
+ lng: latLng.lng,
+ lng_neg: latLng.lng < 0,
+ lat_neg: latLng.lat < 0,
+ };
+
+ // 180 degrees & negative
+ if (center.lng < 0) {
+ center.lng = Math.abs(center.lng);
+ }
+ if (center.lng > 180) {
+ center.lng = 360 - center.lng;
+ center.lng_neg = !center.lng_neg;
+ }
+ if (center.lat < 0) {
+ center.lat = Math.abs(center.lat);
+ }
+
+ // format
+ if ('DM' === latlngFormat) {
+ deg = parseInt(center.lng);
+ lng = deg + 'º ' + this._format('00.000', (center.lng - deg) * 60) + "'";
+ deg = parseInt(center.lat);
+ lat = deg + 'º ' + this._format('00.000', (center.lat - deg) * 60) + "'";
+ } else if ('DMS' === latlngFormat) {
+ deg = parseInt(center.lng);
+ min = (center.lng - deg) * 60;
+ lng = deg + 'º ' + this._format('00', parseInt(min)) + "' " + this._format('00.0', (min - parseInt(min)) * 60) + "''";
+ deg = parseInt(center.lat);
+ min = (center.lat - deg) * 60;
+ lat = deg + 'º ' + this._format('00', parseInt(min)) + "' " + this._format('00.0', (min - parseInt(min)) * 60) + "''";
+ } else { // 'DD'
+ lng = this._format('#0.00000', center.lng) + 'º';
+ lat = this._format('##0.00000', center.lat) + 'º';
+ }
+
+ return L.Util.template(this.options.template, {
+ x: (!designators && center.lng_neg ? '-' : '') + lng + (designators ? (center.lng_neg ? ' W' : ' E') : ''),
+ y: (!designators && center.lat_neg ? '-' : '') + lat + (designators ? (center.lat_neg ? ' S' : ' N') : '')
+ });
+ },
+
+ /**
+ * IntegraXor Web SCADA - JavaScript Number Formatter
+ *
+ * @see https://code.google.com/p/javascript-number-formatter
+ * @authors KPL, KHL
+ */
+ _format: function (m, v) {
+ if (!m || isNaN(+v)) {
+ return v; // return as it is.
+ }
+
+ v = m.charAt(0) == '-' ? -v : +v; // convert any string to number according to formation sign.
+ let isNegative = v < 0 ? v = -v : 0; // process only abs(), and turn on flag.
+
+ let result = m.match(/[^\d\-\+#]/g); // search for separator for grp & decimal, anything not digit, not +/- sign, not #.
+ let Decimal = (result && result[result.length - 1]) || '.'; // treat the right most symbol as decimal
+ let Group = (result && result[1] && result[0]) || ','; // treat the left most symbol as group separator
+
+ m = m.split(Decimal); // split the decimal for the format string if any.
+ v = v.toFixed(m[1] && m[1].length); // Fix the decimal first, toFixed will auto fill trailing zero.
+ v = +(v) + ''; // convert number to string to trim off *all* trailing decimal zero(es)
+
+ let pos_trail_zero = m[1] && m[1].lastIndexOf('0'); // fill back any trailing zero according to format (look for last zero in format)
+ let part = v.split('.');
+
+ if (!part[1] || part[1] && part[1].length <= pos_trail_zero) { // integer will get !part[1]
+ v = (+v).toFixed(pos_trail_zero + 1);
+ }
+ let szSep = m[0].split(Group); // look for separator
+ m[0] = szSep.join(''); // join back without separator for counting the pos of any leading 0.
+
+ let pos_lead_zero = m[0] && m[0].indexOf('0');
+ if (pos_lead_zero > -1) {
+ while (part[0].length < (m[0].length - pos_lead_zero)) {
+ part[0] = '0' + part[0];
+ }
+ } else if (+part[0] == 0) {
+ part[0] = '';
+ }
+ v = v.split('.');
+ v[0] = part[0];
+
+ var pos_separator = (szSep[1] && szSep[szSep.length - 1].length); // process the first group separator from decimal (.) only, the rest ignore. Get the length of the last slice of split result.
+ if (pos_separator) {
+ let integer = v[0];
+ let str = '';
+ let offset = integer.length % pos_separator;
+ for (let i = 0, l = integer.length; i < l; i++) {
+ str += integer.charAt(i); // ie6 only support charAt for sz.
+ if (
+ !((i - offset + 1) % pos_separator) &&
+ i < l - pos_separator // -pos_separator so that won't trail separator on full length
+ ) {
+ str += Group;
+ }
+ }
+ v[0] = str;
+ }
+
+ v[1] = (m[1] && v[1]) ? Decimal + v[1] : "";
+ return (isNegative ? '-' : '') + v[0] + v[1]; // put back any negation and combine integer and fraction.
+ }
+
+});
+
+/**
+ * Original Source: https://github.com/dtutic/Leaflet.EdgeScaleBar
+ *
+ * Draws the metric scale bars in Web Mercator map along top and right edges.
+ * Authors: Dražen Tutić (dtutic@geof.hr), Ana Kuveždić Divjak (akuvezdic@geof.hr)
+ * University of Zagreb, Faculty of Geodesy, GEOF-OSGL Lab
+ * Inspired by LatLonGraticule Leaflet plugin by: lanwei@cloudybay.com.tw
+ */
+L.Control.EdgeScale.Layer = L.Layer.extend({
+
+ includes: L.Evented ? L.Evented.prototype : L.Mixin.Events,
+
+ options: {
+ opacity: 1,
+ weight: 0.8,
+ gradient: {
+ size: 10,
+ opacity: 0.5,
+ },
+ color: '#000',
+ font: '11px Arial',
+ zoomInterval: [
+ {start: 0, end: 2, interval: 5000000},
+ {start: 3, end: 3, interval: 2000000},
+ {start: 4, end: 4, interval: 1000000},
+ {start: 5, end: 5, interval: 500000},
+ {start: 6, end: 7, interval: 200000},
+ {start: 8, end: 8, interval: 100000},
+ {start: 9, end: 9, interval: 50000},
+ {start: 10, end: 10, interval: 20000},
+ {start: 11, end: 11, interval: 10000},
+ {start: 12, end: 12, interval: 5000},
+ {start: 13, end: 13, interval: 2000},
+ {start: 14, end: 14, interval: 1000},
+ {start: 15, end: 15, interval: 500},
+ {start: 16, end: 16, interval: 200},
+ {start: 17, end: 17, interval: 100},
+ {start: 18, end: 18, interval: 50},
+ {start: 19, end: 19, interval: 20},
+ {start: 20, end: 20, interval: 10}
+ ],
+ pane: 'edgescalePane'
+ },
+
+ initialize: function (options) {
+
+ L.setOptions(this, options);
+
+ // Constants of the WGS84 ellipsoid needed to calculate meridian length or latitute
+ const a = this._a = 6378137.0;
+ const b = this._b = 6356752.3142;
+ const n = this._n = (a - b)/(a + b);
+ const a2 = a * a;
+ const b2 = b * b;
+ const n2 = n * n;
+ const n3 = n2 * n;
+ const n4 = n3 * n;
+ const n5 = n4 * n;
+ this._A = a * (1.0 - n) * (1.0 - n2) * (1.0 + 9.0/4.0 * n2 + 225.0/64.0 * n4);
+ this._e2 = (a2 - b2) / a2;
+ this._ic1 = 1.5 * n - 29.0/12.0 * n3 + 553.0/80.0 * n5;
+ this._ic2 = 21.0/8.0 * n2 - 1537.0/128.0 * n4;
+ this._ic3 = 151.0/24.0 * n3 - 32373.0/640.0 * n5;
+ this._ic4 = 1097.0/64.0 * n4;
+ this._ic5 = 8011.0/150.0 * n5;
+ this._c1 = -1.5 * n + 31.0/24.0 * n3 - 669.0/640.0 * n5;
+ this._c2 = 15.0/18.0 * n2 - 435.0/128.0 * n4;
+ this._c3 = -35.0/12.0 * n3 + 651.0/80.0 * n5;
+ this._c4 = 315.0/64.0 * n4;
+ this._c5 = -693.0/80.0 * n5;
+
+ // Latitude limit of the Web Mercator projection
+ this._LIMIT_PHI = 1.484419982;
+ },
+
+ onAdd: function (map) {
+ this._map = map;
+
+ let pane = map.getPane(this.options.pane);
+ if (!pane) {
+ pane = this._pane = map.createPane('edgescalePane', map.getPane('norotatePane') || map.getPane('mapPane'));
+ pane.style.zIndex = 625; // This pane is above markers but below popups.
+ pane.style.pointerEvents = 'none';
+ }
+
+ this._pane = pane;
+
+ // if (this._renderer) this._renderer.remove()
+ // this._renderer = L.canvas({ pane: "edgescalePane" }).addTo(this._map); // default leaflet svg renderer
+
+ if (!this._canvas) {
+ this._initCanvas();
+ }
+
+ this._pane.appendChild(this._canvas);
+
+ map.on('viewreset', this._reset, this);
+ map.on('move', this._reset, this);
+ map.on('moveend', this._reset, this);
+ map.on('rotate', this._reset, this);
+
+ this._reset();
+ },
+
+ onRemove: function (map) {
+ this._pane.removeChild(this._canvas);
+
+ map.off('viewreset', this._reset, this);
+ map.off('move', this._reset, this);
+ map.off('moveend', this._reset, this);
+ },
+
+ addTo: function (map) {
+ map.addLayer(this);
+ return this;
+ },
+
+ setOpacity: function (opacity) {
+ this.options.opacity = opacity;
+ L.DomUtil.setOpacity(this._canvas, this.options.opacity);
+ return this;
+ },
+
+ bringToFront: function () {
+ if (this._canvas) {
+ this._pane.appendChild(this._canvas);
+ }
+ return this;
+ },
+
+ bringToBack: function () {
+ if (this._canvas) {
+ this._pane.insertBefore(this._canvas, pane.firstChild);
+ }
+ return this;
+ },
+
+ _initCanvas: function () {
+ this._canvas = L.DomUtil.create('canvas', '');
+ this._ctx = this._canvas.getContext('2d');
+
+ this.setOpacity();
+
+ L.extend(this._canvas, {
+ onselectstart: L.Util.falseFn,
+ onmousemove: L.Util.falseFn,
+ onload: L.bind(this._onCanvasLoad, this)
+ });
+ },
+
+ _reset: function () {
+ var canvas = this._canvas,
+ size = this._map.getSize();
+
+ this._setCanvasPosition();
+
+ canvas.width = size.x;
+ canvas.height = size.y;
+ canvas.style.width = size.x + 'px';
+ canvas.style.height = size.y + 'px';
+
+ /**
+ * @TODO add support for "leaflet-rotate"
+ */
+ if (this._map._bearing) {
+ return;
+ }
+
+ const { gradient } = this.options;
+
+ // horizontal gradient
+ if (!this._hor_gradient) {
+ this._hor_gradient = this._ctx.createLinearGradient(0, 0, 0, gradient.size);
+ this._hor_gradient.addColorStop(0,"rgba(255, 255, 255, " + gradient.opacity + ")");
+ this._hor_gradient.addColorStop(1,"rgba(255, 255, 255, 0)");
+ }
+ this._ctx.fillStyle = this._hor_gradient;
+ this._ctx.fillRect(0, 0, size.x, gradient.size);
+
+ // vertical gradient
+ if (!this._vert_gradient) {
+ this._vert_gradient = this._ctx.createLinearGradient(0, 0, gradient.size, 0);
+ this._vert_gradient.addColorStop(0,"rgba(255, 255, 255, " + gradient.opacity + ")");
+ this._vert_gradient.addColorStop(1,"rgba(255, 255, 255, 0)");
+ }
+ this._ctx.fillStyle = this._vert_gradient;
+ this._ctx.fillRect(0, 0, gradient.size, size.y);
+
+ this._ctx.beginPath();
+ this._ctx.moveTo(0,0);
+ this._ctx.lineTo(size.x,0);
+ this._ctx.lineTo(size.x,size.y);
+ this._ctx.stroke();
+
+ this._calcInterval();
+ this._draw();
+ },
+
+ _onCanvasLoad: function () {
+ this.fire('load');
+ },
+
+ _calcInterval: function() {
+ const { zoomInterval } = this.options;
+ const zoom = this._map.getZoom();
+
+ if (undefined !== zoomInterval) {
+ // Manually set scale using a custom this.options.zoomInterval object
+ for (const idx in zoomInterval) {
+ const dict = zoomInterval[idx];
+ if (dict.start <= zoom && dict.end && dict.end >= zoom) {
+ this._interval = dict.interval;
+ break;
+ }
+ }
+ } else {
+ // Autamatically get current scale using L.Control.Scale
+ // Source: https://gis.stackexchange.com/a/198444
+ this._interval = L.Control.Scale.prototype._getRoundNum(
+ this._map
+ .containerPointToLatLng([0, this._map.getSize().y / 2 ])
+ .distanceTo(
+ this._map.containerPointToLatLng([L.Control.Scale.prototype.options.maxWidth, this._map.getSize().y / 2 ]
+ )
+ )
+ );
+ }
+
+ this._currZoom = zoom;
+
+ },
+
+ _draw: function() {
+ this._ctx.strokeStyle = this.options.color;
+ this._create_lat_ticks();
+ this._create_lon_ticks();
+
+ this._ctx.fillStyle = this.options.color;
+ this._ctx.font = this.options.font;
+
+ const size = this._map.getSize();
+ const text = this._interval >= 1000 ? (this._interval / 1000 + ' km') : this._interval + ' m';
+
+ this._ctx.textAlign = 'left';
+ this._ctx.textBaseline = 'middle';
+ this._ctx.fillText(text, +12, size.y / 2);
+
+ this._ctx.textAlign = 'center';
+ this._ctx.textBaseline = 'top';
+ this._ctx.fillText(text, size.x / 2, 12);
+ },
+
+ _create_lat_ticks: function() {
+ const { weight } = this.options;
+ const size = this._map.getSize();
+ const to_rad = Math.PI/180.0;
+ const center = this._merLength(this._map.containerPointToLatLng(L.point(0, size.y / 2)).lat * to_rad);
+ const top = this._merLength(this._map.containerPointToLatLng(L.point(0,0)).lat * to_rad);
+ const bottom = this._merLength(this._map.containerPointToLatLng(L.point(0, size.y)).lat * to_rad);
+
+ // draw major ticks
+ for (let i = center + this._interval / 2; i < top; i = i + this._interval) {
+ const phi = this._invmerLength(i);
+ if ((phi < this._LIMIT_PHI) && (phi > -this._LIMIT_PHI)) {
+ this._draw_lat_tick(phi, 10, weight * 1.5);
+ }
+ }
+ for (let i = center - this._interval / 2; i > bottom; i = i - this._interval) {
+ const phi = this._invmerLength(i);
+ if ((phi > -this._LIMIT_PHI) && (phi < this._LIMIT_PHI)) {
+ this._draw_lat_tick(phi, 10, weight * 1.5);
+ }
+ }
+
+ // draw minor ticks
+ for (let i = center; i < top; i = i + this._interval / 10.0) {
+ const phi = this._invmerLength(i);
+ if ((phi < this._LIMIT_PHI) && (phi > -this._LIMIT_PHI)) {
+ this._draw_lat_tick(phi, 4, weight);
+ }
+ }
+ for (let i = center - this._interval / 10; i > bottom; i = i - this._interval / 10.0) {
+ const phi = this._invmerLength(i);
+ if ((phi > -this._LIMIT_PHI) && (phi < this._LIMIT_PHI)) {
+ this._draw_lat_tick(phi, 4, weight);
+ }
+ }
+ },
+
+ _create_lon_ticks: function() {
+ const { weight } = this.options;
+ const size = this._map.getSize();
+ const to_rad = Math.PI/180.0;
+ const to_deg = 180.0/Math.PI;
+ const center = this._map.containerPointToLatLng(L.point(size.x / 2, 0));
+ const left = this._map.containerPointToLatLng(L.point(0, 0));
+ const right = this._map.containerPointToLatLng(L.point(size.x, 0));
+ const sinPhi2 = Math.pow(Math.sin(center.lat * to_rad), 2);
+ const N = this._a / Math.sqrt(1.0 - this._e2 * sinPhi2);
+ const dl = this._interval / (N * Math.cos(center.lat * to_rad)) * to_deg;
+
+ // draw major ticks
+ for (let i = center.lng + dl / 2; i < right.lng; i = i + dl) this._draw_lon_tick(i, 10, weight * 1.5);
+ for (let i = center.lng - dl / 2; i > left.lng; i = i - dl) this._draw_lon_tick(i, 10, weight * 1.5);
+
+ // draw minor ticks
+ for (let i = center.lng; i < right.lng; i = i + dl / 10) this._draw_lon_tick(i, 4, weight);
+ for (let i = center.lng - dl / 10; i > left.lng; i = i - dl / 10) this._draw_lon_tick(i, 4, weight);
+ },
+
+ _setCanvasPosition: function() {
+ let lt = this._map.containerPointToLayerPoint([0, 0]);
+ /**
+ * @TODO add support for "leaflet-rotate"
+ */
+ if (this._map._bearing) {
+ lt = this._map.rotatedPointToMapPanePoint(
+ this._map.containerPointToLayerPoint(L.point(this._map._container.getBoundingClientRect()))
+ );
+ }
+ L.DomUtil.setPosition(this._canvas, lt);
+ },
+
+ _latLngToCanvasPoint: function (latlng) {
+ return L.point(
+ this._map
+ .project(L.latLng(latlng))
+ ._subtract(this._map.getPixelOrigin())
+ ).add(this._map._getMapPanePos());
+ },
+
+ _draw_lat_tick: function (phi, lenght, weight) {
+ const to_deg = 180.0/Math.PI;
+ const size = this._map.getSize();
+ const y = this._latLngToCanvasPoint(L.latLng(phi * to_deg, 0.0)).y;
+ this._ctx.lineWidth = weight;
+ this._ctx.beginPath();
+ this._ctx.moveTo(0, y);
+ this._ctx.lineTo(+ lenght, y);
+ this._ctx.stroke();
+ },
+
+ _draw_lon_tick: function(lam, lenght, weight) {
+ const x = this._latLngToCanvasPoint(L.latLng(0.0, lam)).x;
+ this._ctx.lineWidth = weight;
+ this._ctx.beginPath();
+ this._ctx.moveTo(x, 0);
+ this._ctx.lineTo(x, lenght);
+ this._ctx.stroke();
+ },
+
+ _merLength: function(phi) {
+ const cos2 = Math.cos(2.0 * phi);
+ const sin2 = Math.sin(2.0 * phi);
+ return this._A * (phi + sin2 * (this._c1 + (this._c2 + (this._c3 + (this._c4 + this._c5 * cos2) * cos2) *cos2) * cos2));
+ },
+
+ _invmerLength: function(s) {
+ const psi = s/this._A;
+ const cos2 = Math.cos(2.0 * psi);
+ const sin2 = Math.sin(2.0 * psi);
+ return psi + sin2 * (this._ic1 + (this._ic2 + (this._ic3 + (this._ic4 + this._ic5 * cos2) * cos2) * cos2) * cos2);
+ },
+});
+
+L.control.edgeScale = function (options) {
+ return new L.Control.EdgeScale(options);
+};
+
+L.Map.mergeOptions({
+ edgeScaleControl: false
+});
+
+L.Map.addInitHook(function () {
+ if (this.options.edgeScaleControl) {
+ this.edgeScaleControl = new L.Control.EdgeScale();
+ this.addControl(this.edgeScaleControl);
+ }
+});
\ No newline at end of file |