130 lines
3.1 KiB
JavaScript
130 lines
3.1 KiB
JavaScript
goog.provide('ol.geom.Point');
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goog.require('ol.extent');
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goog.require('ol.geom.GeometryLayout');
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goog.require('ol.geom.GeometryType');
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goog.require('ol.geom.SimpleGeometry');
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goog.require('ol.geom.flat.deflate');
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goog.require('ol.math');
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/**
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* @classdesc
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* Point geometry.
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*
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* @constructor
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* @extends {ol.geom.SimpleGeometry}
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* @param {ol.Coordinate} coordinates Coordinates.
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* @param {ol.geom.GeometryLayout=} opt_layout Layout.
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* @api stable
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*/
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ol.geom.Point = function(coordinates, opt_layout) {
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goog.base(this);
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this.setCoordinates(coordinates,
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/** @type {ol.geom.GeometryLayout|undefined} */ (opt_layout));
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};
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goog.inherits(ol.geom.Point, ol.geom.SimpleGeometry);
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/**
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* Make a complete copy of the geometry.
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* @return {!ol.geom.Point} Clone.
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* @api stable
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*/
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ol.geom.Point.prototype.clone = function() {
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var point = new ol.geom.Point(null);
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point.setFlatCoordinates(this.layout, this.flatCoordinates.slice());
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return point;
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};
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/**
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* @inheritDoc
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*/
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ol.geom.Point.prototype.closestPointXY =
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function(x, y, closestPoint, minSquaredDistance) {
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var flatCoordinates = this.flatCoordinates;
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var squaredDistance = ol.math.squaredDistance(
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x, y, flatCoordinates[0], flatCoordinates[1]);
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if (squaredDistance < minSquaredDistance) {
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var stride = this.stride;
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var i;
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for (i = 0; i < stride; ++i) {
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closestPoint[i] = flatCoordinates[i];
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}
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closestPoint.length = stride;
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return squaredDistance;
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} else {
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return minSquaredDistance;
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}
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};
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/**
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* Return the coordinate of the point.
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* @return {ol.Coordinate} Coordinates.
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* @api stable
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*/
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ol.geom.Point.prototype.getCoordinates = function() {
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return goog.isNull(this.flatCoordinates) ? [] : this.flatCoordinates.slice();
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};
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/**
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* @inheritDoc
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*/
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ol.geom.Point.prototype.computeExtent = function(extent) {
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return ol.extent.createOrUpdateFromCoordinate(this.flatCoordinates, extent);
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};
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/**
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* @inheritDoc
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* @api stable
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*/
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ol.geom.Point.prototype.getType = function() {
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return ol.geom.GeometryType.POINT;
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};
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/**
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* @inheritDoc
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* @api stable
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*/
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ol.geom.Point.prototype.intersectsExtent = function(extent) {
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return ol.extent.containsXY(extent,
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this.flatCoordinates[0], this.flatCoordinates[1]);
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};
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/**
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* Set the coordinate of the point.
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* @param {ol.Coordinate} coordinates Coordinates.
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* @param {ol.geom.GeometryLayout=} opt_layout Layout.
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* @api stable
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*/
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ol.geom.Point.prototype.setCoordinates = function(coordinates, opt_layout) {
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if (goog.isNull(coordinates)) {
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this.setFlatCoordinates(ol.geom.GeometryLayout.XY, null);
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} else {
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this.setLayout(opt_layout, coordinates, 0);
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if (goog.isNull(this.flatCoordinates)) {
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this.flatCoordinates = [];
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}
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this.flatCoordinates.length = ol.geom.flat.deflate.coordinate(
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this.flatCoordinates, 0, coordinates, this.stride);
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this.changed();
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}
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};
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/**
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* @param {ol.geom.GeometryLayout} layout Layout.
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* @param {Array.<number>} flatCoordinates Flat coordinates.
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*/
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ol.geom.Point.prototype.setFlatCoordinates = function(layout, flatCoordinates) {
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this.setFlatCoordinatesInternal(layout, flatCoordinates);
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this.changed();
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};
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