131 lines
3.2 KiB
JavaScript
131 lines
3.2 KiB
JavaScript
goog.provide('ol.Coordinate');
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goog.provide('ol.CoordinateFormatType');
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goog.provide('ol.coordinate');
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goog.require('goog.math');
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/**
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* @typedef {function((ol.Coordinate|undefined)): string}
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*/
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ol.CoordinateFormatType;
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/**
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* @typedef {Array.<number>}
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*/
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ol.Coordinate;
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/**
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* @param {ol.Coordinate} coordinate Coordinate.
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* @param {ol.Coordinate} delta Delta.
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* @return {ol.Coordinate} Coordinate.
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*/
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ol.coordinate.add = function(coordinate, delta) {
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coordinate[0] += delta[0];
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coordinate[1] += delta[1];
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return coordinate;
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};
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/**
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* @param {number=} opt_precision Precision.
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* @return {ol.CoordinateFormatType} Coordinate format.
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*/
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ol.coordinate.createStringXY = function(opt_precision) {
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return function(coordinate) {
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return ol.coordinate.toStringXY(coordinate, opt_precision);
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};
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};
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/**
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* @private
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* @param {number} degrees Degrees.
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* @param {string} hemispheres Hemispheres.
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* @return {string} String.
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*/
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ol.coordinate.degreesToStringHDMS_ = function(degrees, hemispheres) {
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var normalizedDegrees = goog.math.modulo(degrees + 180, 360) - 180;
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var x = Math.abs(Math.round(3600 * normalizedDegrees));
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return Math.floor(x / 3600) + '\u00b0 ' +
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Math.floor((x / 60) % 60) + '\u2032 ' +
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Math.floor(x % 60) + '\u2033 ' +
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hemispheres.charAt(normalizedDegrees < 0 ? 1 : 0);
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};
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/**
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* @param {ol.Coordinate} coordinate Coordinate.
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* @param {number} angle Angle.
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* @return {ol.Coordinate} Coordinate.
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*/
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ol.coordinate.rotate = function(coordinate, angle) {
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var cosAngle = Math.cos(angle);
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var sinAngle = Math.sin(angle);
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var x = coordinate[0] * cosAngle - coordinate[1] * sinAngle;
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var y = coordinate[1] * cosAngle + coordinate[0] * sinAngle;
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coordinate[0] = x;
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coordinate[1] = y;
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return coordinate;
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};
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/**
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* @param {ol.Coordinate} coordinate Coordinate.
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* @param {number} s Scale.
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* @return {ol.Coordinate} Coordinate.
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*/
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ol.coordinate.scale = function(coordinate, s) {
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coordinate[0] *= s;
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coordinate[1] *= s;
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return coordinate;
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};
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/**
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* @param {ol.Coordinate|undefined} coordinate Coordinate.
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* @return {string} Hemisphere, degrees, minutes and seconds.
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*/
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ol.coordinate.toStringHDMS = function(coordinate) {
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if (goog.isDef(coordinate)) {
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return ol.coordinate.degreesToStringHDMS_(coordinate[1], 'NS') + ' ' +
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ol.coordinate.degreesToStringHDMS_(coordinate[0], 'EW');
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} else {
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return '';
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}
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};
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/**
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* @param {ol.Coordinate|undefined} coordinate Coordinate.
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* @param {number=} opt_precision Precision.
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* @return {string} XY.
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*/
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ol.coordinate.toStringXY = function(coordinate, opt_precision) {
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if (goog.isDef(coordinate)) {
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var precision = opt_precision || 0;
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return coordinate[0].toFixed(precision) + ', ' +
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coordinate[1].toFixed(precision);
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} else {
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return '';
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}
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};
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/**
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* Create an ol.Coordinate from an Array and take into account axis order.
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* @param {Array} array The array with coordinates.
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* @param {string} axis the axis info.
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* @return {ol.Coordinate} The coordinate created.
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*/
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ol.coordinate.fromProjectedArray = function(array, axis) {
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var firstAxis = axis.charAt(0);
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if (firstAxis === 'n' || firstAxis === 's') {
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return [array[1], array[0]];
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} else {
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return array;
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}
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};
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