119 lines
3.1 KiB
JavaScript
119 lines
3.1 KiB
JavaScript
goog.provide('ol.geom.MultiPoint');
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goog.require('ol.extent');
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goog.require('ol.geom.Point');
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goog.require('ol.geom.SimpleGeometry');
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goog.require('ol.geom.flat');
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/**
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* @constructor
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* @extends {ol.geom.SimpleGeometry}
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* @param {ol.geom.RawMultiPoint} coordinates Coordinates.
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* @param {ol.geom.GeometryLayout=} opt_layout Layout.
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*/
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ol.geom.MultiPoint = function(coordinates, opt_layout) {
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goog.base(this);
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this.setCoordinates(coordinates, opt_layout);
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};
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goog.inherits(ol.geom.MultiPoint, ol.geom.SimpleGeometry);
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/**
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* @inheritDoc
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*/
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ol.geom.MultiPoint.prototype.clone = function() {
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var multiPoint = new ol.geom.MultiPoint(null);
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multiPoint.setFlatCoordinates(this.layout, this.flatCoordinates.slice());
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return multiPoint;
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};
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/**
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* @inheritDoc
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*/
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ol.geom.MultiPoint.prototype.closestPointXY =
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function(x, y, closestPoint, minSquaredDistance) {
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if (minSquaredDistance <
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ol.extent.closestSquaredDistanceXY(this.getExtent(), x, y)) {
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return minSquaredDistance;
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}
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var flatCoordinates = this.flatCoordinates;
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var stride = this.stride;
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var i, ii;
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for (i = 0, ii = flatCoordinates.length; i < ii; i += stride) {
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var squaredDistance = ol.geom.flat.squaredDistance(
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x, y, flatCoordinates[i], flatCoordinates[i + 1]);
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if (squaredDistance < minSquaredDistance) {
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minSquaredDistance = squaredDistance;
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closestPoint[0] = flatCoordinates[i];
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closestPoint[1] = flatCoordinates[i + 1];
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}
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}
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return minSquaredDistance;
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};
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/**
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* @return {ol.geom.RawMultiPoint} Coordinates.
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*/
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ol.geom.MultiPoint.prototype.getCoordinates = function() {
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return ol.geom.flat.inflateCoordinates(
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this.flatCoordinates, 0, this.flatCoordinates.length, this.stride);
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};
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/**
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* @return {Array.<ol.geom.Point>} Points.
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*/
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ol.geom.MultiPoint.prototype.getPoints = function() {
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// FIXME we should construct the points from the flat coordinates
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var coordinates = this.getCoordinates();
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var points = [];
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var i, ii;
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for (i = 0, ii = coordinates.length; i < ii; ++i) {
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points.push(new ol.geom.Point(coordinates[i]));
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}
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return points;
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};
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/**
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* @inheritDoc
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*/
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ol.geom.MultiPoint.prototype.getType = function() {
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return ol.geom.GeometryType.MULTI_POINT;
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};
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/**
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* @param {ol.geom.RawMultiPoint} coordinates Coordinates.
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* @param {ol.geom.GeometryLayout=} opt_layout Layout.
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*/
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ol.geom.MultiPoint.prototype.setCoordinates =
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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, 1);
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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.deflateCoordinates(
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this.flatCoordinates, 0, coordinates, this.stride);
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this.dispatchChangeEvent();
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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.MultiPoint.prototype.setFlatCoordinates =
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function(layout, flatCoordinates) {
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this.setFlatCoordinatesInternal(layout, flatCoordinates);
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this.dispatchChangeEvent();
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};
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