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openlayers

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Build tools and sources for developing OpenLayers based mapping applications

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goog.provide('ol.geom.MultiPoint'); goog.require('ol'); goog.require('ol.array'); goog.require('ol.extent'); goog.require('ol.geom.GeometryLayout'); goog.require('ol.geom.GeometryType'); goog.require('ol.geom.Point'); goog.require('ol.geom.SimpleGeometry'); goog.require('ol.geom.flat.deflate'); goog.require('ol.geom.flat.inflate'); goog.require('ol.math'); /** * @classdesc * Multi-point geometry. * * @constructor * @extends {ol.geom.SimpleGeometry} * @param {Array.<ol.Coordinate>} coordinates Coordinates. * @param {ol.geom.GeometryLayout=} opt_layout Layout. * @api stable */ ol.geom.MultiPoint = function(coordinates, opt_layout) { ol.geom.SimpleGeometry.call(this); this.setCoordinates(coordinates, opt_layout); }; ol.inherits(ol.geom.MultiPoint, ol.geom.SimpleGeometry); /** * Append the passed point to this multipoint. * @param {ol.geom.Point} point Point. * @api stable */ ol.geom.MultiPoint.prototype.appendPoint = function(point) { ol.DEBUG && console.assert(point.getLayout() == this.layout, 'the layout of point should match layout'); if (!this.flatCoordinates) { this.flatCoordinates = point.getFlatCoordinates().slice(); } else { ol.array.extend(this.flatCoordinates, point.getFlatCoordinates()); } this.changed(); }; /** * Make a complete copy of the geometry. * @return {!ol.geom.MultiPoint} Clone. * @api stable */ ol.geom.MultiPoint.prototype.clone = function() { var multiPoint = new ol.geom.MultiPoint(null); multiPoint.setFlatCoordinates(this.layout, this.flatCoordinates.slice()); return multiPoint; }; /** * @inheritDoc */ ol.geom.MultiPoint.prototype.closestPointXY = function(x, y, closestPoint, minSquaredDistance) { if (minSquaredDistance < ol.extent.closestSquaredDistanceXY(this.getExtent(), x, y)) { return minSquaredDistance; } var flatCoordinates = this.flatCoordinates; var stride = this.stride; var i, ii, j; for (i = 0, ii = flatCoordinates.length; i < ii; i += stride) { var squaredDistance = ol.math.squaredDistance( x, y, flatCoordinates[i], flatCoordinates[i + 1]); if (squaredDistance < minSquaredDistance) { minSquaredDistance = squaredDistance; for (j = 0; j < stride; ++j) { closestPoint[j] = flatCoordinates[i + j]; } closestPoint.length = stride; } } return minSquaredDistance; }; /** * Return the coordinates of the multipoint. * @return {Array.<ol.Coordinate>} Coordinates. * @api stable */ ol.geom.MultiPoint.prototype.getCoordinates = function() { return ol.geom.flat.inflate.coordinates( this.flatCoordinates, 0, this.flatCoordinates.length, this.stride); }; /** * Return the point at the specified index. * @param {number} index Index. * @return {ol.geom.Point} Point. * @api stable */ ol.geom.MultiPoint.prototype.getPoint = function(index) { var n = !this.flatCoordinates ? 0 : this.flatCoordinates.length / this.stride; ol.DEBUG && console.assert(0 <= index && index < n, 'index should be in between 0 and n'); if (index < 0 || n <= index) { return null; } var point = new ol.geom.Point(null); point.setFlatCoordinates(this.layout, this.flatCoordinates.slice( index * this.stride, (index + 1) * this.stride)); return point; }; /** * Return the points of this multipoint. * @return {Array.<ol.geom.Point>} Points. * @api stable */ ol.geom.MultiPoint.prototype.getPoints = function() { var flatCoordinates = this.flatCoordinates; var layout = this.layout; var stride = this.stride; /** @type {Array.<ol.geom.Point>} */ var points = []; var i, ii; for (i = 0, ii = flatCoordinates.length; i < ii; i += stride) { var point = new ol.geom.Point(null); point.setFlatCoordinates(layout, flatCoordinates.slice(i, i + stride)); points.push(point); } return points; }; /** * @inheritDoc * @api stable */ ol.geom.MultiPoint.prototype.getType = function() { return ol.geom.GeometryType.MULTI_POINT; }; /** * @inheritDoc * @api stable */ ol.geom.MultiPoint.prototype.intersectsExtent = function(extent) { var flatCoordinates = this.flatCoordinates; var stride = this.stride; var i, ii, x, y; for (i = 0, ii = flatCoordinates.length; i < ii; i += stride) { x = flatCoordinates[i]; y = flatCoordinates[i + 1]; if (ol.extent.containsXY(extent, x, y)) { return true; } } return false; }; /** * Set the coordinates of the multipoint. * @param {Array.<ol.Coordinate>} coordinates Coordinates. * @param {ol.geom.GeometryLayout=} opt_layout Layout. * @api stable */ ol.geom.MultiPoint.prototype.setCoordinates = function(coordinates, opt_layout) { if (!coordinates) { this.setFlatCoordinates(ol.geom.GeometryLayout.XY, null); } else { this.setLayout(opt_layout, coordinates, 1); if (!this.flatCoordinates) { this.flatCoordinates = []; } this.flatCoordinates.length = ol.geom.flat.deflate.coordinates( this.flatCoordinates, 0, coordinates, this.stride); this.changed(); } }; /** * @param {ol.geom.GeometryLayout} layout Layout. * @param {Array.<number>} flatCoordinates Flat coordinates. */ ol.geom.MultiPoint.prototype.setFlatCoordinates = function(layout, flatCoordinates) { this.setFlatCoordinatesInternal(layout, flatCoordinates); this.changed(); };