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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.GeometryCollection'); goog.require('ol'); goog.require('ol.events'); goog.require('ol.events.EventType'); goog.require('ol.extent'); goog.require('ol.geom.Geometry'); goog.require('ol.geom.GeometryType'); goog.require('ol.obj'); /** * @classdesc * An array of {@link ol.geom.Geometry} objects. * * @constructor * @extends {ol.geom.Geometry} * @param {Array.<ol.geom.Geometry>=} opt_geometries Geometries. * @api stable */ ol.geom.GeometryCollection = function(opt_geometries) { ol.geom.Geometry.call(this); /** * @private * @type {Array.<ol.geom.Geometry>} */ this.geometries_ = opt_geometries ? opt_geometries : null; this.listenGeometriesChange_(); }; ol.inherits(ol.geom.GeometryCollection, ol.geom.Geometry); /** * @param {Array.<ol.geom.Geometry>} geometries Geometries. * @private * @return {Array.<ol.geom.Geometry>} Cloned geometries. */ ol.geom.GeometryCollection.cloneGeometries_ = function(geometries) { var clonedGeometries = []; var i, ii; for (i = 0, ii = geometries.length; i < ii; ++i) { clonedGeometries.push(geometries[i].clone()); } return clonedGeometries; }; /** * @private */ ol.geom.GeometryCollection.prototype.unlistenGeometriesChange_ = function() { var i, ii; if (!this.geometries_) { return; } for (i = 0, ii = this.geometries_.length; i < ii; ++i) { ol.events.unlisten( this.geometries_[i], ol.events.EventType.CHANGE, this.changed, this); } }; /** * @private */ ol.geom.GeometryCollection.prototype.listenGeometriesChange_ = function() { var i, ii; if (!this.geometries_) { return; } for (i = 0, ii = this.geometries_.length; i < ii; ++i) { ol.events.listen( this.geometries_[i], ol.events.EventType.CHANGE, this.changed, this); } }; /** * Make a complete copy of the geometry. * @return {!ol.geom.GeometryCollection} Clone. * @api stable */ ol.geom.GeometryCollection.prototype.clone = function() { var geometryCollection = new ol.geom.GeometryCollection(null); geometryCollection.setGeometries(this.geometries_); return geometryCollection; }; /** * @inheritDoc */ ol.geom.GeometryCollection.prototype.closestPointXY = function(x, y, closestPoint, minSquaredDistance) { if (minSquaredDistance < ol.extent.closestSquaredDistanceXY(this.getExtent(), x, y)) { return minSquaredDistance; } var geometries = this.geometries_; var i, ii; for (i = 0, ii = geometries.length; i < ii; ++i) { minSquaredDistance = geometries[i].closestPointXY( x, y, closestPoint, minSquaredDistance); } return minSquaredDistance; }; /** * @inheritDoc */ ol.geom.GeometryCollection.prototype.containsXY = function(x, y) { var geometries = this.geometries_; var i, ii; for (i = 0, ii = geometries.length; i < ii; ++i) { if (geometries[i].containsXY(x, y)) { return true; } } return false; }; /** * @inheritDoc */ ol.geom.GeometryCollection.prototype.computeExtent = function(extent) { ol.extent.createOrUpdateEmpty(extent); var geometries = this.geometries_; for (var i = 0, ii = geometries.length; i < ii; ++i) { ol.extent.extend(extent, geometries[i].getExtent()); } return extent; }; /** * Return the geometries that make up this geometry collection. * @return {Array.<ol.geom.Geometry>} Geometries. * @api stable */ ol.geom.GeometryCollection.prototype.getGeometries = function() { return ol.geom.GeometryCollection.cloneGeometries_(this.geometries_); }; /** * @return {Array.<ol.geom.Geometry>} Geometries. */ ol.geom.GeometryCollection.prototype.getGeometriesArray = function() { return this.geometries_; }; /** * @inheritDoc */ ol.geom.GeometryCollection.prototype.getSimplifiedGeometry = function(squaredTolerance) { if (this.simplifiedGeometryRevision != this.getRevision()) { ol.obj.clear(this.simplifiedGeometryCache); this.simplifiedGeometryMaxMinSquaredTolerance = 0; this.simplifiedGeometryRevision = this.getRevision(); } if (squaredTolerance < 0 || (this.simplifiedGeometryMaxMinSquaredTolerance !== 0 && squaredTolerance < this.simplifiedGeometryMaxMinSquaredTolerance)) { return this; } var key = squaredTolerance.toString(); if (this.simplifiedGeometryCache.hasOwnProperty(key)) { return this.simplifiedGeometryCache[key]; } else { var simplifiedGeometries = []; var geometries = this.geometries_; var simplified = false; var i, ii; for (i = 0, ii = geometries.length; i < ii; ++i) { var geometry = geometries[i]; var simplifiedGeometry = geometry.getSimplifiedGeometry(squaredTolerance); simplifiedGeometries.push(simplifiedGeometry); if (simplifiedGeometry !== geometry) { simplified = true; } } if (simplified) { var simplifiedGeometryCollection = new ol.geom.GeometryCollection(null); simplifiedGeometryCollection.setGeometriesArray(simplifiedGeometries); this.simplifiedGeometryCache[key] = simplifiedGeometryCollection; return simplifiedGeometryCollection; } else { this.simplifiedGeometryMaxMinSquaredTolerance = squaredTolerance; return this; } } }; /** * @inheritDoc * @api stable */ ol.geom.GeometryCollection.prototype.getType = function() { return ol.geom.GeometryType.GEOMETRY_COLLECTION; }; /** * @inheritDoc * @api stable */ ol.geom.GeometryCollection.prototype.intersectsExtent = function(extent) { var geometries = this.geometries_; var i, ii; for (i = 0, ii = geometries.length; i < ii; ++i) { if (geometries[i].intersectsExtent(extent)) { return true; } } return false; }; /** * @return {boolean} Is empty. */ ol.geom.GeometryCollection.prototype.isEmpty = function() { return this.geometries_.length === 0; }; /** * @inheritDoc * @api */ ol.geom.GeometryCollection.prototype.rotate = function(angle, anchor) { var geometries = this.geometries_; for (var i = 0, ii = geometries.length; i < ii; ++i) { geometries[i].rotate(angle, anchor); } this.changed(); }; /** * @inheritDoc * @api */ ol.geom.GeometryCollection.prototype.scale = function(sx, opt_sy, opt_anchor) { var anchor = opt_anchor; if (!anchor) { anchor = ol.extent.getCenter(this.getExtent()); } var geometries = this.geometries_; for (var i = 0, ii = geometries.length; i < ii; ++i) { geometries[i].scale(sx, opt_sy, anchor); } this.changed(); }; /** * Set the geometries that make up this geometry collection. * @param {Array.<ol.geom.Geometry>} geometries Geometries. * @api stable */ ol.geom.GeometryCollection.prototype.setGeometries = function(geometries) { this.setGeometriesArray( ol.geom.GeometryCollection.cloneGeometries_(geometries)); }; /** * @param {Array.<ol.geom.Geometry>} geometries Geometries. */ ol.geom.GeometryCollection.prototype.setGeometriesArray = function(geometries) { this.unlistenGeometriesChange_(); this.geometries_ = geometries; this.listenGeometriesChange_(); this.changed(); }; /** * @inheritDoc * @api stable */ ol.geom.GeometryCollection.prototype.applyTransform = function(transformFn) { var geometries = this.geometries_; var i, ii; for (i = 0, ii = geometries.length; i < ii; ++i) { geometries[i].applyTransform(transformFn); } this.changed(); }; /** * Translate the geometry. * @param {number} deltaX Delta X. * @param {number} deltaY Delta Y. * @api */ ol.geom.GeometryCollection.prototype.translate = function(deltaX, deltaY) { var geometries = this.geometries_; var i, ii; for (i = 0, ii = geometries.length; i < ii; ++i) { geometries[i].translate(deltaX, deltaY); } this.changed(); }; /** * @inheritDoc */ ol.geom.GeometryCollection.prototype.disposeInternal = function() { this.unlistenGeometriesChange_(); ol.geom.Geometry.prototype.disposeInternal.call(this); };