643 lines
19 KiB
JavaScript
643 lines
19 KiB
JavaScript
goog.provide('ol.interaction.Modify');
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goog.require('goog.array');
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goog.require('goog.asserts');
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goog.require('goog.events');
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goog.require('ol.Collection');
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goog.require('ol.CollectionEventType');
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goog.require('ol.Feature');
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goog.require('ol.FeatureOverlay');
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goog.require('ol.MapBrowserEvent.EventType');
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goog.require('ol.ViewHint');
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goog.require('ol.coordinate');
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goog.require('ol.extent');
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goog.require('ol.geom.GeometryType');
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goog.require('ol.geom.LineString');
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goog.require('ol.geom.MultiLineString');
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goog.require('ol.geom.MultiPoint');
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goog.require('ol.geom.MultiPolygon');
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goog.require('ol.geom.Point');
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goog.require('ol.geom.Polygon');
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goog.require('ol.interaction.Drag');
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goog.require('ol.structs.RBush');
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/**
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* @typedef {{depth: (Array.<number>|undefined),
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* feature: ol.Feature,
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* geometry: ol.geom.SimpleGeometry,
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* index: (number|undefined),
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* segment: Array.<ol.Extent>}}
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*/
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ol.interaction.SegmentDataType;
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/**
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* @constructor
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* @extends {ol.interaction.Drag}
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* @param {olx.interaction.ModifyOptions} options Options.
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*/
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ol.interaction.Modify = function(options) {
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goog.base(this);
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/**
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* Editing vertex.
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* @type {ol.Feature}
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* @private
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*/
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this.vertexFeature_ = null;
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/**
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* Segments intersecting {@link this.vertexFeature_} by segment uid.
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* @type {Object.<string, boolean>}
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* @private
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*/
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this.vertexSegments_ = null;
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/**
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* @type {boolean}
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* @private
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*/
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this.modifiable_ = false;
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/**
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* @type {ol.Pixel}
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* @private
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*/
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this.lastPixel_ = null;
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/**
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* Segment RTree for each layer
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* @type {Object.<*, ol.structs.RBush>}
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* @private
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*/
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this.rBush_ = null;
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/**
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* @type {number}
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* @private
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*/
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this.pixelTolerance_ = goog.isDef(options.pixelTolerance) ?
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options.pixelTolerance : 20;
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/**
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* @type {Array}
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* @private
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*/
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this.dragSegments_ = null;
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/**
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* Draw overlay where are sketch features are drawn.
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* @type {ol.FeatureOverlay}
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* @private
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*/
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this.overlay_ = new ol.FeatureOverlay({
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style: options.style
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});
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/**
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* @type {ol.Collection}
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* @private
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*/
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this.features_ = options.features;
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goog.events.listen(this.features_, ol.CollectionEventType.ADD,
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this.addFeature_, false, this);
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goog.events.listen(this.features_, ol.CollectionEventType.REMOVE,
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this.removeFeature_, false, this);
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/**
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* @const
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* @private
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* @type {Object.<string, function(ol.Feature, ol.geom.Geometry)> }
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*/
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this.SEGMENT_WRITERS_ = {
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'Point': this.writePointGeometry_,
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'LineString': this.writeLineStringGeometry_,
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'LinearRing': this.writeLineStringGeometry_,
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'Polygon': this.writePolygonGeometry_,
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'MultiPoint': this.writeMultiPointGeometry_,
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'MultiLineString': this.writeMultiLineStringGeometry_,
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'MultiPolygon': this.writeMultiPolygonGeometry_,
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'GeometryCollection': this.writeGeometryCollectionGeometry_
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};
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};
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goog.inherits(ol.interaction.Modify, ol.interaction.Drag);
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/**
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* @inheritDoc
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*/
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ol.interaction.Modify.prototype.setMap = function(map) {
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if (!goog.isNull(map)) {
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if (goog.isNull(this.rBush_)) {
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this.rBush_ = new ol.structs.RBush();
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}
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} else {
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// removing from a map, clean up
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this.rBush_ = null;
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}
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this.overlay_.setMap(map);
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goog.base(this, 'setMap', map);
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};
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/**
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* @param {ol.CollectionEvent} evt Event.
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* @private
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*/
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ol.interaction.Modify.prototype.addFeature_ = function(evt) {
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var feature = evt.element;
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goog.asserts.assertInstanceof(feature, ol.Feature);
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var geometry = feature.getGeometry();
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if (goog.isDef(this.SEGMENT_WRITERS_[geometry.getType()])) {
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this.SEGMENT_WRITERS_[geometry.getType()].call(this, feature, geometry);
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}
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this.handleMouseAtPixel_(this.lastPixel_, this.getMap());
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};
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/**
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* @param {ol.Feature} feature Feature
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* @param {ol.geom.Point} geometry Geometry.
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* @private
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*/
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ol.interaction.Modify.prototype.writePointGeometry_ =
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function(feature, geometry) {
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var coordinates = geometry.getCoordinates();
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var segmentData = /** @type {ol.interaction.SegmentDataType} */ ({
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feature: feature,
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geometry: geometry,
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segment: [coordinates, coordinates]
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});
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this.rBush_.insert(geometry.getExtent(), segmentData);
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};
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/**
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* @param {ol.Feature} feature Feature
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* @param {ol.geom.MultiPoint} geometry Geometry.
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* @private
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*/
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ol.interaction.Modify.prototype.writeMultiPointGeometry_ =
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function(feature, geometry) {
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var points = geometry.getCoordinates();
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var coordinates, i, ii, segmentData;
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for (i = 0, ii = points.length; i < ii; ++i) {
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coordinates = points[i];
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segmentData = /** @type {ol.interaction.SegmentDataType} */ ({
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feature: feature,
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geometry: geometry,
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depth: [i],
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index: i,
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segment: [coordinates, coordinates]
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});
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this.rBush_.insert(geometry.getExtent(), segmentData);
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}
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};
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/**
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* @param {ol.Feature} feature Feature
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* @param {ol.geom.LineString} geometry Geometry.
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* @private
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*/
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ol.interaction.Modify.prototype.writeLineStringGeometry_ =
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function(feature, geometry) {
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var coordinates = geometry.getCoordinates();
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var i, ii, segment, segmentData;
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for (i = 0, ii = coordinates.length - 1; i < ii; ++i) {
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segment = coordinates.slice(i, i + 2);
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segmentData = /** @type {ol.interaction.SegmentDataType} */ ({
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feature: feature,
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geometry: geometry,
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index: i,
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segment: segment
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});
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this.rBush_.insert(ol.extent.boundingExtent(segment), segmentData);
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}
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};
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/**
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* @param {ol.Feature} feature Feature
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* @param {ol.geom.MultiLineString} geometry Geometry.
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* @private
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*/
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ol.interaction.Modify.prototype.writeMultiLineStringGeometry_ =
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function(feature, geometry) {
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var lines = geometry.getCoordinates();
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var coordinates, i, ii, j, jj, segment, segmentData;
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for (j = 0, jj = lines.length; j < jj; ++j) {
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coordinates = lines[j];
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for (i = 0, ii = coordinates.length - 1; i < ii; ++i) {
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segment = coordinates.slice(i, i + 2);
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segmentData = /** @type {ol.interaction.SegmentDataType} */ ({
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feature: feature,
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geometry: geometry,
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depth: [j],
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index: i,
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segment: segment
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});
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this.rBush_.insert(ol.extent.boundingExtent(segment), segmentData);
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}
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}
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};
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/**
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* @param {ol.Feature} feature Feature
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* @param {ol.geom.Polygon} geometry Geometry.
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* @private
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*/
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ol.interaction.Modify.prototype.writePolygonGeometry_ =
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function(feature, geometry) {
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var rings = geometry.getCoordinates();
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var coordinates, i, ii, j, jj, segment, segmentData;
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for (j = 0, jj = rings.length; j < jj; ++j) {
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coordinates = rings[j];
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for (i = 0, ii = coordinates.length - 1; i < ii; ++i) {
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segment = coordinates.slice(i, i + 2);
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segmentData = /** @type {ol.interaction.SegmentDataType} */ ({
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feature: feature,
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geometry: geometry,
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depth: [j],
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index: i,
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segment: segment
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});
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this.rBush_.insert(ol.extent.boundingExtent(segment), segmentData);
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}
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}
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};
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/**
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* @param {ol.Feature} feature Feature
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* @param {ol.geom.MultiPolygon} geometry Geometry.
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* @private
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*/
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ol.interaction.Modify.prototype.writeMultiPolygonGeometry_ =
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function(feature, geometry) {
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var polygons = geometry.getCoordinates();
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var coordinates, i, ii, j, jj, k, kk, rings, segment, segmentData;
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for (k = 0, kk = polygons.length; k < kk; ++k) {
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rings = polygons[k];
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for (j = 0, jj = rings.length; j < jj; ++j) {
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coordinates = rings[j];
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for (i = 0, ii = coordinates.length - 1; i < ii; ++i) {
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segment = coordinates.slice(i, i + 2);
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segmentData = /** @type {ol.interaction.SegmentDataType} */ ({
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feature: feature,
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geometry: geometry,
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depth: [j, k],
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index: i,
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segment: segment
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});
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this.rBush_.insert(ol.extent.boundingExtent(segment), segmentData);
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}
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}
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}
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};
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/**
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* @param {ol.Feature} feature Feature
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* @param {ol.geom.GeometryCollection} geometry Geometry.
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* @private
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*/
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ol.interaction.Modify.prototype.writeGeometryCollectionGeometry_ =
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function(feature, geometry) {
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var i, geometries = geometry.getGeometriesArray();
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for (i = 0; i < geometries.length; ++i) {
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this.SEGMENT_WRITERS_[geometries[i].getType()].call(
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this, feature, geometries[i]);
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}
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};
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/**
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* @param {ol.CollectionEvent} evt Event.
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* @private
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*/
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ol.interaction.Modify.prototype.removeFeature_ = function(evt) {
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var feature = evt.element;
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var rBush = this.rBush_;
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var i, nodesToRemove = [];
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rBush.forEachInExtent(feature.getGeometry().getExtent(), function(node) {
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if (feature === node.feature) {
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nodesToRemove.push(node);
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}
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});
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for (i = nodesToRemove.length - 1; i >= 0; --i) {
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rBush.remove(nodesToRemove[i]);
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}
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// There remains only vertexFeature…
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if (!goog.isNull(this.vertexFeature_) &&
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this.features_.getLength() === 0) {
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this.overlay_.removeFeature(this.vertexFeature_);
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this.vertexFeature_ = null;
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}
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};
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/**
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* @param {ol.Coordinate} coordinates Coordinates.
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* @return {ol.Feature} Vertex feature.
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* @private
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*/
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ol.interaction.Modify.prototype.createOrUpdateVertexFeature_ =
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function(coordinates) {
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var vertexFeature = this.vertexFeature_;
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if (goog.isNull(vertexFeature)) {
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vertexFeature = new ol.Feature(new ol.geom.Point(coordinates));
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this.vertexFeature_ = vertexFeature;
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this.overlay_.addFeature(vertexFeature);
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} else {
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var geometry = /** @type {ol.geom.Point} */ (vertexFeature.getGeometry());
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geometry.setCoordinates(coordinates);
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}
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return vertexFeature;
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};
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/**
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* @inheritDoc
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*/
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ol.interaction.Modify.prototype.handleDragStart = function(evt) {
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this.dragSegments_ = [];
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var vertexFeature = this.vertexFeature_;
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if (!goog.isNull(vertexFeature)) {
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var insertVertices = [];
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var geometry = /** @type {ol.geom.Point} */ (vertexFeature.getGeometry());
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var vertex = geometry.getCoordinates();
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var vertexExtent = ol.extent.boundingExtent([vertex]);
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var segmentDataMatches = [];
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this.rBush_.forEachInExtent(vertexExtent,
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function(segmentData) {
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segmentDataMatches.push(segmentData);
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});
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var distinctFeatures = {};
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for (var i = 0, ii = segmentDataMatches.length; i < ii; ++i) {
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var segmentDataMatch = segmentDataMatches[i];
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var segment = segmentDataMatch.segment;
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if (!(goog.getUid(segmentDataMatch.feature) in distinctFeatures)) {
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var feature = segmentDataMatch.feature;
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distinctFeatures[goog.getUid(feature)] = true;
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}
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if (ol.coordinate.equals(segment[0], vertex)) {
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this.dragSegments_.push([segmentDataMatch, 0]);
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} else if (ol.coordinate.equals(segment[1], vertex)) {
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this.dragSegments_.push([segmentDataMatch, 1]);
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} else if (goog.getUid(segment) in this.vertexSegments_) {
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insertVertices.push([segmentDataMatch, vertex]);
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}
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}
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for (i = insertVertices.length - 1; i >= 0; --i) {
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this.insertVertex_.apply(this, insertVertices[i]);
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}
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}
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return this.modifiable_;
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};
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/**
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* @inheritDoc
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*/
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ol.interaction.Modify.prototype.handleDrag = function(evt) {
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var vertex = evt.coordinate;
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for (var i = 0, ii = this.dragSegments_.length; i < ii; ++i) {
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var dragSegment = this.dragSegments_[i];
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var segmentData = dragSegment[0];
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var depth = segmentData.depth;
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var geometry = segmentData.geometry;
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var coordinates = geometry.getCoordinates();
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var segment = segmentData.segment;
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var index = dragSegment[1];
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switch (geometry.getType()) {
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case ol.geom.GeometryType.POINT:
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coordinates = vertex;
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segment[0] = segment[1] = vertex;
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break;
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case ol.geom.GeometryType.MULTI_POINT:
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coordinates[segmentData.index] = vertex;
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segment[0] = segment[1] = vertex;
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break;
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case ol.geom.GeometryType.LINE_STRING:
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coordinates[segmentData.index + index] = vertex;
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segment[index] = vertex;
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break;
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case ol.geom.GeometryType.MULTI_LINE_STRING:
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coordinates[depth[0]][segmentData.index + index] = vertex;
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segment[index] = vertex;
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break;
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case ol.geom.GeometryType.POLYGON:
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coordinates[depth[0]][segmentData.index + index] = vertex;
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segment[index] = vertex;
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break;
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case ol.geom.GeometryType.MULTI_POLYGON:
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coordinates[depth[1]][depth[0]][segmentData.index + index] = vertex;
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segment[index] = vertex;
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break;
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}
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geometry.setCoordinates(coordinates);
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var newBounds = ol.extent.boundingExtent(segment);
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this.createOrUpdateVertexFeature_(vertex);
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this.rBush_.remove(segmentData);
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this.rBush_.insert(newBounds, segmentData);
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}
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};
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/**
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* @inheritDoc
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*/
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ol.interaction.Modify.prototype.handleDragEnd = function(evt) {
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var segmentData;
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for (var i = this.dragSegments_.length - 1; i >= 0; --i) {
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segmentData = this.dragSegments_[i][0];
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this.rBush_.update(ol.extent.boundingExtent(segmentData.segment),
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segmentData);
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}
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};
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/**
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* @inheritDoc
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*/
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ol.interaction.Modify.prototype.handleMapBrowserEvent =
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function(mapBrowserEvent) {
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if (!mapBrowserEvent.map.getView().getHints()[ol.ViewHint.INTERACTING] &&
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!this.getDragging() &&
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mapBrowserEvent.type == ol.MapBrowserEvent.EventType.MOUSEMOVE) {
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this.handleMouseMove_(mapBrowserEvent);
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}
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goog.base(this, 'handleMapBrowserEvent', mapBrowserEvent);
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return !this.modifiable_;
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};
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/**
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* @param {ol.MapBrowserEvent} evt Event.
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* @private
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*/
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ol.interaction.Modify.prototype.handleMouseMove_ = function(evt) {
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this.lastPixel_ = evt.pixel;
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this.handleMouseAtPixel_(evt.pixel, evt.map);
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};
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/**
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* @param {ol.Pixel} pixel Pixel
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* @param {ol.Map} map Map.
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* @private
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*/
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ol.interaction.Modify.prototype.handleMouseAtPixel_ = function(pixel, map) {
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var pixelCoordinate = map.getCoordinateFromPixel(pixel);
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var sortByDistance = function(a, b) {
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return ol.coordinate.squaredDistanceToSegment(pixelCoordinate, a.segment) -
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ol.coordinate.squaredDistanceToSegment(pixelCoordinate, b.segment);
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};
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var lowerLeft = map.getCoordinateFromPixel(
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[pixel[0] - this.pixelTolerance_, pixel[1] + this.pixelTolerance_]);
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var upperRight = map.getCoordinateFromPixel(
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[pixel[0] + this.pixelTolerance_, pixel[1] - this.pixelTolerance_]);
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var box = ol.extent.boundingExtent([lowerLeft, upperRight]);
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this.modifiable_ = false;
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var rBush = this.rBush_;
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var nodes = rBush.getInExtent(box);
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if (nodes.length > 0) {
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nodes.sort(sortByDistance);
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var node = nodes[0];
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var closestSegment = node.segment;
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var vertex = (ol.coordinate.closestOnSegment(pixelCoordinate,
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closestSegment));
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var vertexPixel = map.getPixelFromCoordinate(vertex);
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if (Math.sqrt(ol.coordinate.squaredDistance(pixel, vertexPixel)) <=
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this.pixelTolerance_) {
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var pixel1 = map.getPixelFromCoordinate(closestSegment[0]);
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var pixel2 = map.getPixelFromCoordinate(closestSegment[1]);
|
|
var squaredDist1 = ol.coordinate.squaredDistance(vertexPixel, pixel1);
|
|
var squaredDist2 = ol.coordinate.squaredDistance(vertexPixel, pixel2);
|
|
var dist = Math.sqrt(Math.min(squaredDist1, squaredDist2));
|
|
if (dist <= 10) {
|
|
vertex = squaredDist1 > squaredDist2 ?
|
|
closestSegment[1] : closestSegment[0];
|
|
}
|
|
this.createOrUpdateVertexFeature_(vertex);
|
|
var vertexSegments = {};
|
|
vertexSegments[goog.getUid(closestSegment)] = true;
|
|
var segment;
|
|
for (var i = 1, ii = nodes.length; i < ii; ++i) {
|
|
segment = nodes[i].segment;
|
|
if ((ol.coordinate.equals(closestSegment[0], segment[0]) &&
|
|
ol.coordinate.equals(closestSegment[1], segment[1]) ||
|
|
(ol.coordinate.equals(closestSegment[0], segment[1]) &&
|
|
ol.coordinate.equals(closestSegment[1], segment[0])))) {
|
|
vertexSegments[goog.getUid(segment)] = true;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
this.vertexSegments_ = vertexSegments;
|
|
this.modifiable_ = true;
|
|
return;
|
|
}
|
|
}
|
|
if (!goog.isNull(this.vertexFeature_)) {
|
|
this.overlay_.removeFeature(this.vertexFeature_);
|
|
this.vertexFeature_ = null;
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {ol.interaction.SegmentDataType} segmentData Segment data.
|
|
* @param {ol.Coordinate} vertex Vertex.
|
|
* @private
|
|
*/
|
|
ol.interaction.Modify.prototype.insertVertex_ = function(segmentData, vertex) {
|
|
var segment = segmentData.segment;
|
|
var feature = segmentData.feature;
|
|
var geometry = segmentData.geometry;
|
|
var depth = segmentData.depth;
|
|
var index = segmentData.index;
|
|
var coordinates;
|
|
|
|
switch (geometry.getType()) {
|
|
case ol.geom.GeometryType.MULTI_LINE_STRING:
|
|
goog.asserts.assertInstanceof(geometry, ol.geom.MultiLineString);
|
|
coordinates = geometry.getCoordinates();
|
|
coordinates[depth[0]].splice(index + 1, 0, vertex);
|
|
break;
|
|
case ol.geom.GeometryType.POLYGON:
|
|
goog.asserts.assertInstanceof(geometry, ol.geom.Polygon);
|
|
coordinates = geometry.getCoordinates();
|
|
coordinates[depth[0]].splice(index + 1, 0, vertex);
|
|
break;
|
|
case ol.geom.GeometryType.MULTI_POLYGON:
|
|
goog.asserts.assertInstanceof(geometry, ol.geom.MultiPolygon);
|
|
coordinates = geometry.getCoordinates();
|
|
coordinates[depth[1]][depth[0]].splice(index + 1, 0, vertex);
|
|
break;
|
|
case ol.geom.GeometryType.LINE_STRING:
|
|
goog.asserts.assertInstanceof(geometry, ol.geom.LineString);
|
|
coordinates = geometry.getCoordinates();
|
|
coordinates.splice(index + 1, 0, vertex);
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
geometry.setCoordinates(coordinates);
|
|
var rTree = this.rBush_;
|
|
goog.asserts.assert(goog.isDef(segment));
|
|
rTree.remove(segmentData);
|
|
var uid = goog.getUid(feature);
|
|
var segmentDataMatches = [];
|
|
this.rBush_.forEachInExtent(geometry.getExtent(),
|
|
function(segmentData) {
|
|
if (goog.getUid(segmentData.feature) === uid) {
|
|
segmentDataMatches.push(segmentData);
|
|
}
|
|
});
|
|
for (var i = 0, ii = segmentDataMatches.length; i < ii; ++i) {
|
|
var segmentDataMatch = segmentDataMatches[i];
|
|
if (segmentDataMatch.geometry === geometry &&
|
|
(!goog.isDef(depth) ||
|
|
goog.array.equals(segmentDataMatch.depth, depth)) &&
|
|
segmentDataMatch.index > index) {
|
|
++segmentDataMatch.index;
|
|
}
|
|
}
|
|
var newSegmentData = /** @type {ol.interaction.SegmentDataType} */ ({
|
|
segment: [segment[0], vertex],
|
|
feature: feature,
|
|
geometry: geometry,
|
|
depth: depth,
|
|
index: index
|
|
});
|
|
rTree.insert(ol.extent.boundingExtent(newSegmentData.segment),
|
|
newSegmentData);
|
|
this.dragSegments_.push([newSegmentData, 1]);
|
|
|
|
var newSegmentData2 = /** @type {ol.interaction.SegmentDataType} */ ({
|
|
segment: [vertex, segment[1]],
|
|
feature: feature,
|
|
geometry: geometry,
|
|
depth: depth,
|
|
index: index + 1
|
|
});
|
|
rTree.insert(ol.extent.boundingExtent(newSegmentData2.segment),
|
|
newSegmentData2);
|
|
this.dragSegments_.push([newSegmentData2, 0]);
|
|
};
|