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434
Epost.TestToolsWeb/Content/code/es-modules/parts-map/GeoJSON.js
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434
Epost.TestToolsWeb/Content/code/es-modules/parts-map/GeoJSON.js
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/**
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* (c) 2010-2018 Torstein Honsi
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*
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* License: www.highcharts.com/license
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*/
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/**
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* A latitude/longitude object.
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*
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* @interface Highcharts.MapLatLonObject
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*//**
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* The latitude.
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* @name Highcharts.MapLatLonObject#lat
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* @type {number}
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*//**
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* The longitude.
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* @name Highcharts.MapLatLonObject#lon
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* @type {number}
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*/
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/**
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* Result object of a map transformation.
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*
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* @interface Highcharts.MapCoordinateObject
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*//**
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* X coordinate on the map.
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* @name Highcharts.MapCoordinateObject#x
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* @type {number}
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*//**
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* Y coordinate on the map.
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* @name Highcharts.MapCoordinateObject#y
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* @type {number}
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*/
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'use strict';
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import H from '../parts/Globals.js';
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import '../parts/Utilities.js';
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import '../parts/Options.js';
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import '../parts/Chart.js';
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var Chart = H.Chart,
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extend = H.extend,
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format = H.format,
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merge = H.merge,
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win = H.win,
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wrap = H.wrap;
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/* *
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* Test for point in polygon. Polygon defined as array of [x,y] points.
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*/
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function pointInPolygon(point, polygon) {
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var i,
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j,
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rel1,
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rel2,
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c = false,
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x = point.x,
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y = point.y;
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for (i = 0, j = polygon.length - 1; i < polygon.length; j = i++) {
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rel1 = polygon[i][1] > y;
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rel2 = polygon[j][1] > y;
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if (
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rel1 !== rel2 &&
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(
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x < (polygon[j][0] -
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polygon[i][0]) * (y - polygon[i][1]) /
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(polygon[j][1] - polygon[i][1]) +
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polygon[i][0]
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)
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) {
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c = !c;
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}
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}
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return c;
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}
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/**
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* Highmaps only. Get point from latitude and longitude using specified
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* transform definition.
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*
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* @requires module:modules/map
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*
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* @sample maps/series/latlon-transform/
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* Use specific transformation for lat/lon
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*
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* @function Highcharts.Chart#transformFromLatLon
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*
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* @param {Highcharts.MapLatLonObject} latLon
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* A latitude/longitude object.
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*
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* @param {object} transform
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* The transform definition to use as explained in the
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* {@link https://www.highcharts.com/docs/maps/latlon|documentation}.
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*
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* @return {Highcharts.MapCoordinateObject}
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* An object with `x` and `y` properties.
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*/
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Chart.prototype.transformFromLatLon = function (latLon, transform) {
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if (win.proj4 === undefined) {
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H.error(21, false, this);
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return {
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x: 0,
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y: null
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};
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}
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var projected = win.proj4(transform.crs, [latLon.lon, latLon.lat]),
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cosAngle = transform.cosAngle ||
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(transform.rotation && Math.cos(transform.rotation)),
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sinAngle = transform.sinAngle ||
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(transform.rotation && Math.sin(transform.rotation)),
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rotated = transform.rotation ? [
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projected[0] * cosAngle + projected[1] * sinAngle,
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-projected[0] * sinAngle + projected[1] * cosAngle
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] : projected;
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return {
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x: (
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(rotated[0] - (transform.xoffset || 0)) * (transform.scale || 1) +
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(transform.xpan || 0)
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) * (transform.jsonres || 1) +
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(transform.jsonmarginX || 0),
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y: (
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((transform.yoffset || 0) - rotated[1]) * (transform.scale || 1) +
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(transform.ypan || 0)
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) * (transform.jsonres || 1) -
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(transform.jsonmarginY || 0)
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};
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};
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/**
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* Highmaps only. Get latLon from point using specified transform definition.
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* The method returns an object with the numeric properties `lat` and `lon`.
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*
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* @requires module:modules/map
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*
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* @sample maps/series/latlon-transform/
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* Use specific transformation for lat/lon
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*
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* @function Highcharts.Chart#transformToLatLon
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*
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* @param {Highcharts.Point|Highcharts.MapCoordinateObject} point
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* A `Point` instance, or any object containing the properties `x` and
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* `y` with numeric values.
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*
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* @param {object} transform
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* The transform definition to use as explained in the
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* {@link https://www.highcharts.com/docs/maps/latlon|documentation}.
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*
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* @return {Highcharts.MapLatLonObject}
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* An object with `lat` and `lon` properties.
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*/
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Chart.prototype.transformToLatLon = function (point, transform) {
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if (win.proj4 === undefined) {
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H.error(21, false, this);
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return;
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}
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var normalized = {
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x: (
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(
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point.x -
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(transform.jsonmarginX || 0)
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) / (transform.jsonres || 1) -
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(transform.xpan || 0)
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) / (transform.scale || 1) +
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(transform.xoffset || 0),
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y: (
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(
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-point.y - (transform.jsonmarginY || 0)
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) / (transform.jsonres || 1) +
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(transform.ypan || 0)
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) / (transform.scale || 1) +
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(transform.yoffset || 0)
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},
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cosAngle = transform.cosAngle ||
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(transform.rotation && Math.cos(transform.rotation)),
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sinAngle = transform.sinAngle ||
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(transform.rotation && Math.sin(transform.rotation)),
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// Note: Inverted sinAngle to reverse rotation direction
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projected = win.proj4(transform.crs, 'WGS84', transform.rotation ? {
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x: normalized.x * cosAngle + normalized.y * -sinAngle,
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y: normalized.x * sinAngle + normalized.y * cosAngle
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} : normalized);
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return { lat: projected.y, lon: projected.x };
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};
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/**
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* Highmaps only. Calculate latitude/longitude values for a point. Returns an
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* object with the numeric properties `lat` and `lon`.
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*
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* @requires module:modules/map
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*
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* @sample maps/demo/latlon-advanced/
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* Advanced lat/lon demo
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*
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* @function Highcharts.Chart#fromPointToLatLon
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*
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* @param {Highcharts.Point|Highcharts.MapCoordinateObject} point
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* A `Point` instance or anything containing `x` and `y` properties with
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* numeric values.
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*
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* @return {Highcharts.MapLatLonObject}
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* An object with `lat` and `lon` properties.
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*/
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Chart.prototype.fromPointToLatLon = function (point) {
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var transforms = this.mapTransforms,
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transform;
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if (!transforms) {
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H.error(22, false, this);
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return;
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}
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for (transform in transforms) {
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if (
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transforms.hasOwnProperty(transform) &&
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transforms[transform].hitZone &&
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pointInPolygon(
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{ x: point.x, y: -point.y },
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transforms[transform].hitZone.coordinates[0]
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)
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) {
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return this.transformToLatLon(point, transforms[transform]);
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}
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}
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return this.transformToLatLon(
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point,
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transforms['default'] // eslint-disable-line dot-notation
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);
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};
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/**
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* Highmaps only. Get chart coordinates from latitude/longitude. Returns an
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* object with x and y values corresponding to the `xAxis` and `yAxis`.
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*
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* @requires module:modules/map
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*
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* @sample maps/series/latlon-to-point/
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* Find a point from lat/lon
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*
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* @function Highcharts.Chart#fromLatLonToPoint
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*
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* @param {Highcharts.MapLatLonObject} latLon
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* Coordinates.
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*
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* @return {Highcharts.MapCoordinateObject}
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* X and Y coordinates in terms of chart axis values.
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*/
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Chart.prototype.fromLatLonToPoint = function (latLon) {
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var transforms = this.mapTransforms,
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transform,
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coords;
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if (!transforms) {
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H.error(22, false, this);
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return {
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x: 0,
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y: null
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};
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}
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for (transform in transforms) {
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if (
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transforms.hasOwnProperty(transform) &&
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transforms[transform].hitZone
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) {
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coords = this.transformFromLatLon(latLon, transforms[transform]);
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if (pointInPolygon(
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{ x: coords.x, y: -coords.y },
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transforms[transform].hitZone.coordinates[0]
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)) {
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return coords;
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}
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}
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}
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return this.transformFromLatLon(
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latLon,
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transforms['default'] // eslint-disable-line dot-notation
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);
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};
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/**
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* Highmaps only. Restructure a GeoJSON object in preparation to be read
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* directly by the
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* {@link https://api.highcharts.com/highmaps/plotOptions.series.mapData|series.mapData}
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* option. The GeoJSON will be broken down to fit a specific Highcharts type,
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* either `map`, `mapline` or `mappoint`. Meta data in GeoJSON's properties
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* object will be copied directly over to {@link Point.properties} in Highmaps.
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*
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* @requires module:modules/map
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*
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* @sample maps/demo/geojson/
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* Simple areas
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* @sample maps/demo/geojson-multiple-types/
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* Multiple types
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*
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* @function Highcharts.geojson
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*
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* @param {object} geojson
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* The GeoJSON structure to parse, represented as a JavaScript object
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* rather than a JSON string.
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*
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* @param {string} [hType=map]
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* The Highmaps series type to prepare for. Setting "map" will return
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* GeoJSON polygons and multipolygons. Setting "mapline" will return
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* GeoJSON linestrings and multilinestrings. Setting "mappoint" will
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* return GeoJSON points and multipoints.
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*
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* @return {Array<object>}
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* An object ready for the `mapData` option.
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*/
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H.geojson = function (geojson, hType, series) {
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var mapData = [],
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path = [],
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polygonToPath = function (polygon) {
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var i,
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len = polygon.length;
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path.push('M');
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for (i = 0; i < len; i++) {
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if (i === 1) {
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path.push('L');
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}
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path.push(polygon[i][0], -polygon[i][1]);
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}
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};
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hType = hType || 'map';
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geojson.features.forEach(function (feature) {
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var geometry = feature.geometry,
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type = geometry.type,
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coordinates = geometry.coordinates,
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properties = feature.properties,
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point;
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path = [];
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if (hType === 'map' || hType === 'mapbubble') {
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if (type === 'Polygon') {
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coordinates.forEach(polygonToPath);
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path.push('Z');
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} else if (type === 'MultiPolygon') {
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coordinates.forEach(function (items) {
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items.forEach(polygonToPath);
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});
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path.push('Z');
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}
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if (path.length) {
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point = { path: path };
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}
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} else if (hType === 'mapline') {
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if (type === 'LineString') {
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polygonToPath(coordinates);
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} else if (type === 'MultiLineString') {
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coordinates.forEach(polygonToPath);
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}
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if (path.length) {
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point = { path: path };
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}
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} else if (hType === 'mappoint') {
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if (type === 'Point') {
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point = {
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x: coordinates[0],
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y: -coordinates[1]
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};
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}
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}
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if (point) {
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mapData.push(extend(point, {
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name: properties.name || properties.NAME,
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/**
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* In Highmaps, when data is loaded from GeoJSON, the GeoJSON
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* item's properies are copied over here.
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*
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* @requires module:modules/map
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* @name Highcharts.Point#properties
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* @type {*}
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*/
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properties: properties
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}));
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}
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});
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// Create a credits text that includes map source, to be picked up in
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// Chart.addCredits
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if (series && geojson.copyrightShort) {
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series.chart.mapCredits = format(
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series.chart.options.credits.mapText,
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{ geojson: geojson }
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);
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series.chart.mapCreditsFull = format(
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series.chart.options.credits.mapTextFull,
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{ geojson: geojson }
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);
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}
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return mapData;
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};
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// Override addCredits to include map source by default
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wrap(Chart.prototype, 'addCredits', function (proceed, credits) {
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credits = merge(true, this.options.credits, credits);
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// Disable credits link if map credits enabled. This to allow for in-text
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// anchors.
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if (this.mapCredits) {
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credits.href = null;
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}
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proceed.call(this, credits);
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// Add full map credits to hover
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if (this.credits && this.mapCreditsFull) {
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this.credits.attr({
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title: this.mapCreditsFull
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});
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}
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});
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Reference in New Issue
Block a user