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50 lines
1.6 KiB
50 lines
1.6 KiB
9 months ago
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define([
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'exports',
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'./Matrix2-f2da41d4',
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'./when-229515d6',
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'./RuntimeError-ffe03243',
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'./ComponentDatatype-17b06483',
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], function (t, e, i, o, a) {
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'use strict';
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function r(t) {
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(this._ellipsoid = i.defaultValue(t, e.Ellipsoid.WGS84)),
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(this._semimajorAxis = this._ellipsoid.maximumRadius),
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(this._oneOverSemimajorAxis = 1 / this._semimajorAxis);
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}
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Object.defineProperties(r.prototype, {
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ellipsoid: {
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get: function () {
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return this._ellipsoid;
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},
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},
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}),
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(r.mercatorAngleToGeodeticLatitude = function (t) {
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return a.CesiumMath.PI_OVER_TWO - 2 * Math.atan(Math.exp(-t));
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}),
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(r.geodeticLatitudeToMercatorAngle = function (t) {
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t > r.MaximumLatitude
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? (t = r.MaximumLatitude)
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: t < -r.MaximumLatitude && (t = -r.MaximumLatitude);
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var e = Math.sin(t);
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return 0.5 * Math.log((1 + e) / (1 - e));
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}),
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(r.MaximumLatitude = r.mercatorAngleToGeodeticLatitude(Math.PI)),
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(r.prototype.project = function (t, o) {
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var a = this._semimajorAxis,
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n = t.longitude * a,
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u = r.geodeticLatitudeToMercatorAngle(t.latitude) * a,
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d = t.height;
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return i.defined(o) ? ((o.x = n), (o.y = u), (o.z = d), o) : new e.Cartesian3(n, u, d);
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}),
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(r.prototype.unproject = function (t, o) {
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var a = this._oneOverSemimajorAxis,
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n = t.x * a,
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u = r.mercatorAngleToGeodeticLatitude(t.y * a),
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d = t.z;
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return i.defined(o)
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? ((o.longitude = n), (o.latitude = u), (o.height = d), o)
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: new e.Cartographic(n, u, d);
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}),
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(t.WebMercatorProjection = r);
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});
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