1234 lines
38 KiB
JavaScript
1234 lines
38 KiB
JavaScript
goog.provide('ol.interaction.Modify');
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goog.require('ol');
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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.MapBrowserEventType');
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goog.require('ol.MapBrowserPointerEvent');
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goog.require('ol.array');
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goog.require('ol.coordinate');
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goog.require('ol.events');
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goog.require('ol.events.Event');
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goog.require('ol.events.EventType');
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goog.require('ol.events.condition');
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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.Point');
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goog.require('ol.interaction.ModifyEventType');
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goog.require('ol.interaction.Pointer');
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goog.require('ol.layer.Vector');
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goog.require('ol.source.Vector');
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goog.require('ol.source.VectorEventType');
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goog.require('ol.structs.RBush');
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goog.require('ol.style.Style');
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/**
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* @classdesc
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* Interaction for modifying feature geometries. To modify features that have
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* been added to an existing source, construct the modify interaction with the
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* `source` option. If you want to modify features in a collection (for example,
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* the collection used by a select interaction), construct the interaction with
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* the `features` option. The interaction must be constructed with either a
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* `source` or `features` option.
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*
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* By default, the interaction will allow deletion of vertices when the `alt`
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* key is pressed. To configure the interaction with a different condition
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* for deletion, use the `deleteCondition` option.
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*
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* @constructor
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* @extends {ol.interaction.Pointer}
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* @param {olx.interaction.ModifyOptions} options Options.
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* @fires ol.interaction.Modify.Event
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* @api
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*/
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ol.interaction.Modify = function(options) {
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ol.interaction.Pointer.call(this, {
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handleDownEvent: ol.interaction.Modify.handleDownEvent_,
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handleDragEvent: ol.interaction.Modify.handleDragEvent_,
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handleEvent: ol.interaction.Modify.handleEvent,
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handleUpEvent: ol.interaction.Modify.handleUpEvent_
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});
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/**
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* @private
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* @type {ol.EventsConditionType}
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*/
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this.condition_ = options.condition ?
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options.condition : ol.events.condition.primaryAction;
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/**
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* @private
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* @param {ol.MapBrowserEvent} mapBrowserEvent Browser event.
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* @return {boolean} Combined condition result.
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*/
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this.defaultDeleteCondition_ = function(mapBrowserEvent) {
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return ol.events.condition.altKeyOnly(mapBrowserEvent) &&
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ol.events.condition.singleClick(mapBrowserEvent);
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};
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/**
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* @type {ol.EventsConditionType}
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* @private
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*/
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this.deleteCondition_ = options.deleteCondition ?
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options.deleteCondition : this.defaultDeleteCondition_;
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/**
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* @type {ol.EventsConditionType}
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* @private
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*/
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this.insertVertexCondition_ = options.insertVertexCondition ?
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options.insertVertexCondition : ol.events.condition.always;
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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 {ol.Pixel}
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* @private
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*/
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this.lastPixel_ = [0, 0];
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/**
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* Tracks if the next `singleclick` event should be ignored to prevent
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* accidental deletion right after vertex creation.
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* @type {boolean}
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* @private
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*/
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this.ignoreNextSingleClick_ = false;
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/**
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* @type {boolean}
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* @private
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*/
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this.modified_ = false;
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/**
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* Segment RTree for each layer
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* @type {ol.structs.RBush.<ol.ModifySegmentDataType>}
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* @private
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*/
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this.rBush_ = new ol.structs.RBush();
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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_ = options.pixelTolerance !== undefined ?
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options.pixelTolerance : 10;
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/**
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* @type {boolean}
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* @private
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*/
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this.snappedToVertex_ = false;
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/**
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* Indicate whether the interaction is currently changing a feature's
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* coordinates.
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* @type {boolean}
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* @private
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*/
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this.changingFeature_ = false;
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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_ = [];
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/**
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* Draw overlay where sketch features are drawn.
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* @type {ol.layer.Vector}
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* @private
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*/
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this.overlay_ = new ol.layer.Vector({
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source: new ol.source.Vector({
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useSpatialIndex: false,
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wrapX: !!options.wrapX
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}),
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style: options.style ? options.style :
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ol.interaction.Modify.getDefaultStyleFunction(),
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updateWhileAnimating: true,
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updateWhileInteracting: true
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});
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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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'Circle': this.writeCircleGeometry_,
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'GeometryCollection': this.writeGeometryCollectionGeometry_
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};
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/**
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* @type {ol.source.Vector}
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* @private
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*/
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this.source_ = null;
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var features;
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if (options.source) {
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this.source_ = options.source;
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features = new ol.Collection(this.source_.getFeatures());
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ol.events.listen(this.source_, ol.source.VectorEventType.ADDFEATURE,
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this.handleSourceAdd_, this);
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ol.events.listen(this.source_, ol.source.VectorEventType.REMOVEFEATURE,
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this.handleSourceRemove_, this);
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} else {
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features = options.features;
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}
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if (!features) {
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throw new Error('The modify interaction requires features or a source');
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}
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/**
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* @type {ol.Collection.<ol.Feature>}
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* @private
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*/
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this.features_ = features;
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this.features_.forEach(this.addFeature_, this);
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ol.events.listen(this.features_, ol.CollectionEventType.ADD,
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this.handleFeatureAdd_, this);
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ol.events.listen(this.features_, ol.CollectionEventType.REMOVE,
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this.handleFeatureRemove_, this);
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/**
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* @type {ol.MapBrowserPointerEvent}
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* @private
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*/
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this.lastPointerEvent_ = null;
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};
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ol.inherits(ol.interaction.Modify, ol.interaction.Pointer);
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/**
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* @define {number} The segment index assigned to a circle's center when
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* breaking up a cicrle into ModifySegmentDataType segments.
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*/
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ol.interaction.Modify.MODIFY_SEGMENT_CIRCLE_CENTER_INDEX = 0;
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/**
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* @define {number} The segment index assigned to a circle's circumference when
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* breaking up a circle into ModifySegmentDataType segments.
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*/
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ol.interaction.Modify.MODIFY_SEGMENT_CIRCLE_CIRCUMFERENCE_INDEX = 1;
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/**
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* @param {ol.Feature} feature Feature.
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* @private
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*/
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ol.interaction.Modify.prototype.addFeature_ = function(feature) {
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var geometry = feature.getGeometry();
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if (geometry && geometry.getType() in this.SEGMENT_WRITERS_) {
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this.SEGMENT_WRITERS_[geometry.getType()].call(this, feature, geometry);
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}
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var map = this.getMap();
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if (map && map.isRendered() && this.getActive()) {
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this.handlePointerAtPixel_(this.lastPixel_, map);
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}
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ol.events.listen(feature, ol.events.EventType.CHANGE,
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this.handleFeatureChange_, this);
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};
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/**
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* @param {ol.MapBrowserPointerEvent} evt Map browser event
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* @private
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*/
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ol.interaction.Modify.prototype.willModifyFeatures_ = function(evt) {
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if (!this.modified_) {
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this.modified_ = true;
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this.dispatchEvent(new ol.interaction.Modify.Event(
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ol.interaction.ModifyEventType.MODIFYSTART, this.features_, evt));
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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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* @private
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*/
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ol.interaction.Modify.prototype.removeFeature_ = function(feature) {
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this.removeFeatureSegmentData_(feature);
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// Remove the vertex feature if the collection of canditate features
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// is empty.
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if (this.vertexFeature_ && this.features_.getLength() === 0) {
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this.overlay_.getSource().removeFeature(this.vertexFeature_);
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this.vertexFeature_ = null;
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}
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ol.events.unlisten(feature, ol.events.EventType.CHANGE,
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this.handleFeatureChange_, this);
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};
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/**
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* @param {ol.Feature} feature Feature.
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* @private
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*/
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ol.interaction.Modify.prototype.removeFeatureSegmentData_ = function(feature) {
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var rBush = this.rBush_;
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var /** @type {Array.<ol.ModifySegmentDataType>} */ nodesToRemove = [];
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rBush.forEach(
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/**
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* @param {ol.ModifySegmentDataType} node RTree node.
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*/
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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 (var i = nodesToRemove.length - 1; i >= 0; --i) {
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rBush.remove(nodesToRemove[i]);
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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.setActive = function(active) {
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if (this.vertexFeature_ && !active) {
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this.overlay_.getSource().removeFeature(this.vertexFeature_);
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this.vertexFeature_ = null;
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}
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ol.interaction.Pointer.prototype.setActive.call(this, active);
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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.setMap = function(map) {
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this.overlay_.setMap(map);
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ol.interaction.Pointer.prototype.setMap.call(this, map);
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};
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/**
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* @param {ol.source.Vector.Event} event Event.
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* @private
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*/
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ol.interaction.Modify.prototype.handleSourceAdd_ = function(event) {
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if (event.feature) {
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this.features_.push(event.feature);
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}
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};
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/**
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* @param {ol.source.Vector.Event} event Event.
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* @private
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*/
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ol.interaction.Modify.prototype.handleSourceRemove_ = function(event) {
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if (event.feature) {
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this.features_.remove(event.feature);
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}
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};
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/**
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* @param {ol.Collection.Event} evt Event.
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* @private
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*/
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ol.interaction.Modify.prototype.handleFeatureAdd_ = function(evt) {
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this.addFeature_(/** @type {ol.Feature} */ (evt.element));
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};
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/**
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* @param {ol.events.Event} evt Event.
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* @private
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*/
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ol.interaction.Modify.prototype.handleFeatureChange_ = function(evt) {
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if (!this.changingFeature_) {
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var feature = /** @type {ol.Feature} */ (evt.target);
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this.removeFeature_(feature);
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this.addFeature_(feature);
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}
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};
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/**
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* @param {ol.Collection.Event} evt Event.
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* @private
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*/
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ol.interaction.Modify.prototype.handleFeatureRemove_ = function(evt) {
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var feature = /** @type {ol.Feature} */ (evt.element);
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this.removeFeature_(feature);
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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_ = function(feature, geometry) {
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var coordinates = geometry.getCoordinates();
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var segmentData = /** @type {ol.ModifySegmentDataType} */ ({
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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_ = 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.ModifySegmentDataType} */ ({
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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_ = 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.ModifySegmentDataType} */ ({
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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_ = 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.ModifySegmentDataType} */ ({
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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_ = 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.ModifySegmentDataType} */ ({
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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_ = 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.ModifySegmentDataType} */ ({
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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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* We convert a circle into two segments. The segment at index
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* {@link ol.interaction.Modify.MODIFY_SEGMENT_CIRCLE_CENTER_INDEX} is the
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* circle's center (a point). The segment at index
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* {@link ol.interaction.Modify.MODIFY_SEGMENT_CIRCLE_CIRCUMFERENCE_INDEX} is
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* the circumference, and is not a line segment.
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*
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* @param {ol.Feature} feature Feature.
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* @param {ol.geom.Circle} geometry Geometry.
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* @private
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*/
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ol.interaction.Modify.prototype.writeCircleGeometry_ = function(feature, geometry) {
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var coordinates = geometry.getCenter();
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var centerSegmentData = /** @type {ol.ModifySegmentDataType} */ ({
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feature: feature,
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geometry: geometry,
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index: ol.interaction.Modify.MODIFY_SEGMENT_CIRCLE_CENTER_INDEX,
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|
segment: [coordinates, coordinates]
|
|
});
|
|
var circumferenceSegmentData = /** @type {ol.ModifySegmentDataType} */ ({
|
|
feature: feature,
|
|
geometry: geometry,
|
|
index: ol.interaction.Modify.MODIFY_SEGMENT_CIRCLE_CIRCUMFERENCE_INDEX,
|
|
segment: [coordinates, coordinates]
|
|
});
|
|
var featureSegments = [centerSegmentData, circumferenceSegmentData];
|
|
centerSegmentData.featureSegments = circumferenceSegmentData.featureSegments = featureSegments;
|
|
this.rBush_.insert(ol.extent.createOrUpdateFromCoordinate(coordinates), centerSegmentData);
|
|
this.rBush_.insert(geometry.getExtent(), circumferenceSegmentData);
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {ol.Feature} feature Feature
|
|
* @param {ol.geom.GeometryCollection} geometry Geometry.
|
|
* @private
|
|
*/
|
|
ol.interaction.Modify.prototype.writeGeometryCollectionGeometry_ = function(feature, geometry) {
|
|
var i, geometries = geometry.getGeometriesArray();
|
|
for (i = 0; i < geometries.length; ++i) {
|
|
this.SEGMENT_WRITERS_[geometries[i].getType()].call(
|
|
this, feature, geometries[i]);
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {ol.Coordinate} coordinates Coordinates.
|
|
* @return {ol.Feature} Vertex feature.
|
|
* @private
|
|
*/
|
|
ol.interaction.Modify.prototype.createOrUpdateVertexFeature_ = function(coordinates) {
|
|
var vertexFeature = this.vertexFeature_;
|
|
if (!vertexFeature) {
|
|
vertexFeature = new ol.Feature(new ol.geom.Point(coordinates));
|
|
this.vertexFeature_ = vertexFeature;
|
|
this.overlay_.getSource().addFeature(vertexFeature);
|
|
} else {
|
|
var geometry = /** @type {ol.geom.Point} */ (vertexFeature.getGeometry());
|
|
geometry.setCoordinates(coordinates);
|
|
}
|
|
return vertexFeature;
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {ol.ModifySegmentDataType} a The first segment data.
|
|
* @param {ol.ModifySegmentDataType} b The second segment data.
|
|
* @return {number} The difference in indexes.
|
|
* @private
|
|
*/
|
|
ol.interaction.Modify.compareIndexes_ = function(a, b) {
|
|
return a.index - b.index;
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {ol.MapBrowserPointerEvent} evt Event.
|
|
* @return {boolean} Start drag sequence?
|
|
* @this {ol.interaction.Modify}
|
|
* @private
|
|
*/
|
|
ol.interaction.Modify.handleDownEvent_ = function(evt) {
|
|
if (!this.condition_(evt)) {
|
|
return false;
|
|
}
|
|
this.handlePointerAtPixel_(evt.pixel, evt.map);
|
|
var pixelCoordinate = evt.map.getCoordinateFromPixel(evt.pixel);
|
|
this.dragSegments_.length = 0;
|
|
this.modified_ = false;
|
|
var vertexFeature = this.vertexFeature_;
|
|
if (vertexFeature) {
|
|
var insertVertices = [];
|
|
var geometry = /** @type {ol.geom.Point} */ (vertexFeature.getGeometry());
|
|
var vertex = geometry.getCoordinates();
|
|
var vertexExtent = ol.extent.boundingExtent([vertex]);
|
|
var segmentDataMatches = this.rBush_.getInExtent(vertexExtent);
|
|
var componentSegments = {};
|
|
segmentDataMatches.sort(ol.interaction.Modify.compareIndexes_);
|
|
for (var i = 0, ii = segmentDataMatches.length; i < ii; ++i) {
|
|
var segmentDataMatch = segmentDataMatches[i];
|
|
var segment = segmentDataMatch.segment;
|
|
var uid = ol.getUid(segmentDataMatch.feature);
|
|
var depth = segmentDataMatch.depth;
|
|
if (depth) {
|
|
uid += '-' + depth.join('-'); // separate feature components
|
|
}
|
|
if (!componentSegments[uid]) {
|
|
componentSegments[uid] = new Array(2);
|
|
}
|
|
if (segmentDataMatch.geometry.getType() === ol.geom.GeometryType.CIRCLE &&
|
|
segmentDataMatch.index === ol.interaction.Modify.MODIFY_SEGMENT_CIRCLE_CIRCUMFERENCE_INDEX) {
|
|
|
|
var closestVertex = ol.interaction.Modify.closestOnSegmentData_(pixelCoordinate, segmentDataMatch);
|
|
if (ol.coordinate.equals(closestVertex, vertex) && !componentSegments[uid][0]) {
|
|
this.dragSegments_.push([segmentDataMatch, 0]);
|
|
componentSegments[uid][0] = segmentDataMatch;
|
|
}
|
|
} else if (ol.coordinate.equals(segment[0], vertex) &&
|
|
!componentSegments[uid][0]) {
|
|
this.dragSegments_.push([segmentDataMatch, 0]);
|
|
componentSegments[uid][0] = segmentDataMatch;
|
|
} else if (ol.coordinate.equals(segment[1], vertex) &&
|
|
!componentSegments[uid][1]) {
|
|
|
|
// prevent dragging closed linestrings by the connecting node
|
|
if ((segmentDataMatch.geometry.getType() ===
|
|
ol.geom.GeometryType.LINE_STRING ||
|
|
segmentDataMatch.geometry.getType() ===
|
|
ol.geom.GeometryType.MULTI_LINE_STRING) &&
|
|
componentSegments[uid][0] &&
|
|
componentSegments[uid][0].index === 0) {
|
|
continue;
|
|
}
|
|
|
|
this.dragSegments_.push([segmentDataMatch, 1]);
|
|
componentSegments[uid][1] = segmentDataMatch;
|
|
} else if (this.insertVertexCondition_(evt) && ol.getUid(segment) in this.vertexSegments_ &&
|
|
(!componentSegments[uid][0] && !componentSegments[uid][1])) {
|
|
insertVertices.push([segmentDataMatch, vertex]);
|
|
}
|
|
}
|
|
if (insertVertices.length) {
|
|
this.willModifyFeatures_(evt);
|
|
}
|
|
for (var j = insertVertices.length - 1; j >= 0; --j) {
|
|
this.insertVertex_.apply(this, insertVertices[j]);
|
|
}
|
|
}
|
|
return !!this.vertexFeature_;
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {ol.MapBrowserPointerEvent} evt Event.
|
|
* @this {ol.interaction.Modify}
|
|
* @private
|
|
*/
|
|
ol.interaction.Modify.handleDragEvent_ = function(evt) {
|
|
this.ignoreNextSingleClick_ = false;
|
|
this.willModifyFeatures_(evt);
|
|
|
|
var vertex = evt.coordinate;
|
|
for (var i = 0, ii = this.dragSegments_.length; i < ii; ++i) {
|
|
var dragSegment = this.dragSegments_[i];
|
|
var segmentData = dragSegment[0];
|
|
var depth = segmentData.depth;
|
|
var geometry = segmentData.geometry;
|
|
var coordinates;
|
|
var segment = segmentData.segment;
|
|
var index = dragSegment[1];
|
|
|
|
while (vertex.length < geometry.getStride()) {
|
|
vertex.push(segment[index][vertex.length]);
|
|
}
|
|
|
|
switch (geometry.getType()) {
|
|
case ol.geom.GeometryType.POINT:
|
|
coordinates = vertex;
|
|
segment[0] = segment[1] = vertex;
|
|
break;
|
|
case ol.geom.GeometryType.MULTI_POINT:
|
|
coordinates = geometry.getCoordinates();
|
|
coordinates[segmentData.index] = vertex;
|
|
segment[0] = segment[1] = vertex;
|
|
break;
|
|
case ol.geom.GeometryType.LINE_STRING:
|
|
coordinates = geometry.getCoordinates();
|
|
coordinates[segmentData.index + index] = vertex;
|
|
segment[index] = vertex;
|
|
break;
|
|
case ol.geom.GeometryType.MULTI_LINE_STRING:
|
|
coordinates = geometry.getCoordinates();
|
|
coordinates[depth[0]][segmentData.index + index] = vertex;
|
|
segment[index] = vertex;
|
|
break;
|
|
case ol.geom.GeometryType.POLYGON:
|
|
coordinates = geometry.getCoordinates();
|
|
coordinates[depth[0]][segmentData.index + index] = vertex;
|
|
segment[index] = vertex;
|
|
break;
|
|
case ol.geom.GeometryType.MULTI_POLYGON:
|
|
coordinates = geometry.getCoordinates();
|
|
coordinates[depth[1]][depth[0]][segmentData.index + index] = vertex;
|
|
segment[index] = vertex;
|
|
break;
|
|
case ol.geom.GeometryType.CIRCLE:
|
|
segment[0] = segment[1] = vertex;
|
|
if (segmentData.index === ol.interaction.Modify.MODIFY_SEGMENT_CIRCLE_CENTER_INDEX) {
|
|
this.changingFeature_ = true;
|
|
geometry.setCenter(vertex);
|
|
this.changingFeature_ = false;
|
|
} else { // We're dragging the circle's circumference:
|
|
this.changingFeature_ = true;
|
|
geometry.setRadius(ol.coordinate.distance(geometry.getCenter(), vertex));
|
|
this.changingFeature_ = false;
|
|
}
|
|
break;
|
|
default:
|
|
// pass
|
|
}
|
|
|
|
if (coordinates) {
|
|
this.setGeometryCoordinates_(geometry, coordinates);
|
|
}
|
|
}
|
|
this.createOrUpdateVertexFeature_(vertex);
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {ol.MapBrowserPointerEvent} evt Event.
|
|
* @return {boolean} Stop drag sequence?
|
|
* @this {ol.interaction.Modify}
|
|
* @private
|
|
*/
|
|
ol.interaction.Modify.handleUpEvent_ = function(evt) {
|
|
var segmentData;
|
|
var geometry;
|
|
for (var i = this.dragSegments_.length - 1; i >= 0; --i) {
|
|
segmentData = this.dragSegments_[i][0];
|
|
geometry = segmentData.geometry;
|
|
if (geometry.getType() === ol.geom.GeometryType.CIRCLE) {
|
|
// Update a circle object in the R* bush:
|
|
var coordinates = geometry.getCenter();
|
|
var centerSegmentData = segmentData.featureSegments[0];
|
|
var circumferenceSegmentData = segmentData.featureSegments[1];
|
|
centerSegmentData.segment[0] = centerSegmentData.segment[1] = coordinates;
|
|
circumferenceSegmentData.segment[0] = circumferenceSegmentData.segment[1] = coordinates;
|
|
this.rBush_.update(ol.extent.createOrUpdateFromCoordinate(coordinates), centerSegmentData);
|
|
this.rBush_.update(geometry.getExtent(), circumferenceSegmentData);
|
|
} else {
|
|
this.rBush_.update(ol.extent.boundingExtent(segmentData.segment),
|
|
segmentData);
|
|
}
|
|
}
|
|
if (this.modified_) {
|
|
this.dispatchEvent(new ol.interaction.Modify.Event(
|
|
ol.interaction.ModifyEventType.MODIFYEND, this.features_, evt));
|
|
this.modified_ = false;
|
|
}
|
|
return false;
|
|
};
|
|
|
|
|
|
/**
|
|
* Handles the {@link ol.MapBrowserEvent map browser event} and may modify the
|
|
* geometry.
|
|
* @param {ol.MapBrowserEvent} mapBrowserEvent Map browser event.
|
|
* @return {boolean} `false` to stop event propagation.
|
|
* @this {ol.interaction.Modify}
|
|
* @api
|
|
*/
|
|
ol.interaction.Modify.handleEvent = function(mapBrowserEvent) {
|
|
if (!(mapBrowserEvent instanceof ol.MapBrowserPointerEvent)) {
|
|
return true;
|
|
}
|
|
this.lastPointerEvent_ = mapBrowserEvent;
|
|
|
|
var handled;
|
|
if (!mapBrowserEvent.map.getView().getInteracting() &&
|
|
mapBrowserEvent.type == ol.MapBrowserEventType.POINTERMOVE &&
|
|
!this.handlingDownUpSequence) {
|
|
this.handlePointerMove_(mapBrowserEvent);
|
|
}
|
|
if (this.vertexFeature_ && this.deleteCondition_(mapBrowserEvent)) {
|
|
if (mapBrowserEvent.type != ol.MapBrowserEventType.SINGLECLICK ||
|
|
!this.ignoreNextSingleClick_) {
|
|
handled = this.removePoint();
|
|
} else {
|
|
handled = true;
|
|
}
|
|
}
|
|
|
|
if (mapBrowserEvent.type == ol.MapBrowserEventType.SINGLECLICK) {
|
|
this.ignoreNextSingleClick_ = false;
|
|
}
|
|
|
|
return ol.interaction.Pointer.handleEvent.call(this, mapBrowserEvent) &&
|
|
!handled;
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {ol.MapBrowserEvent} evt Event.
|
|
* @private
|
|
*/
|
|
ol.interaction.Modify.prototype.handlePointerMove_ = function(evt) {
|
|
this.lastPixel_ = evt.pixel;
|
|
this.handlePointerAtPixel_(evt.pixel, evt.map);
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {ol.Pixel} pixel Pixel
|
|
* @param {ol.PluggableMap} map Map.
|
|
* @private
|
|
*/
|
|
ol.interaction.Modify.prototype.handlePointerAtPixel_ = function(pixel, map) {
|
|
var pixelCoordinate = map.getCoordinateFromPixel(pixel);
|
|
var sortByDistance = function(a, b) {
|
|
return ol.interaction.Modify.pointDistanceToSegmentDataSquared_(pixelCoordinate, a) -
|
|
ol.interaction.Modify.pointDistanceToSegmentDataSquared_(pixelCoordinate, b);
|
|
};
|
|
|
|
var box = ol.extent.buffer(
|
|
ol.extent.createOrUpdateFromCoordinate(pixelCoordinate),
|
|
map.getView().getResolution() * this.pixelTolerance_);
|
|
|
|
var rBush = this.rBush_;
|
|
var nodes = rBush.getInExtent(box);
|
|
if (nodes.length > 0) {
|
|
nodes.sort(sortByDistance);
|
|
var node = nodes[0];
|
|
var closestSegment = node.segment;
|
|
var vertex = ol.interaction.Modify.closestOnSegmentData_(pixelCoordinate, node);
|
|
var vertexPixel = map.getPixelFromCoordinate(vertex);
|
|
var dist = ol.coordinate.distance(pixel, vertexPixel);
|
|
if (dist <= this.pixelTolerance_) {
|
|
var vertexSegments = {};
|
|
|
|
if (node.geometry.getType() === ol.geom.GeometryType.CIRCLE &&
|
|
node.index === ol.interaction.Modify.MODIFY_SEGMENT_CIRCLE_CIRCUMFERENCE_INDEX) {
|
|
|
|
this.snappedToVertex_ = true;
|
|
this.createOrUpdateVertexFeature_(vertex);
|
|
} else {
|
|
var pixel1 = map.getPixelFromCoordinate(closestSegment[0]);
|
|
var pixel2 = map.getPixelFromCoordinate(closestSegment[1]);
|
|
var squaredDist1 = ol.coordinate.squaredDistance(vertexPixel, pixel1);
|
|
var squaredDist2 = ol.coordinate.squaredDistance(vertexPixel, pixel2);
|
|
dist = Math.sqrt(Math.min(squaredDist1, squaredDist2));
|
|
this.snappedToVertex_ = dist <= this.pixelTolerance_;
|
|
if (this.snappedToVertex_) {
|
|
vertex = squaredDist1 > squaredDist2 ?
|
|
closestSegment[1] : closestSegment[0];
|
|
}
|
|
this.createOrUpdateVertexFeature_(vertex);
|
|
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[ol.getUid(segment)] = true;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
vertexSegments[ol.getUid(closestSegment)] = true;
|
|
this.vertexSegments_ = vertexSegments;
|
|
return;
|
|
}
|
|
}
|
|
if (this.vertexFeature_) {
|
|
this.overlay_.getSource().removeFeature(this.vertexFeature_);
|
|
this.vertexFeature_ = null;
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* Returns the distance from a point to a line segment.
|
|
*
|
|
* @param {ol.Coordinate} pointCoordinates The coordinates of the point from
|
|
* which to calculate the distance.
|
|
* @param {ol.ModifySegmentDataType} segmentData The object describing the line
|
|
* segment we are calculating the distance to.
|
|
* @return {number} The square of the distance between a point and a line segment.
|
|
*/
|
|
ol.interaction.Modify.pointDistanceToSegmentDataSquared_ = function(pointCoordinates, segmentData) {
|
|
var geometry = segmentData.geometry;
|
|
|
|
if (geometry.getType() === ol.geom.GeometryType.CIRCLE) {
|
|
var circleGeometry = /** @type {ol.geom.Circle} */ (geometry);
|
|
|
|
if (segmentData.index === ol.interaction.Modify.MODIFY_SEGMENT_CIRCLE_CIRCUMFERENCE_INDEX) {
|
|
var distanceToCenterSquared =
|
|
ol.coordinate.squaredDistance(circleGeometry.getCenter(), pointCoordinates);
|
|
var distanceToCircumference =
|
|
Math.sqrt(distanceToCenterSquared) - circleGeometry.getRadius();
|
|
return distanceToCircumference * distanceToCircumference;
|
|
}
|
|
}
|
|
return ol.coordinate.squaredDistanceToSegment(pointCoordinates, segmentData.segment);
|
|
};
|
|
|
|
/**
|
|
* Returns the point closest to a given line segment.
|
|
*
|
|
* @param {ol.Coordinate} pointCoordinates The point to which a closest point
|
|
* should be found.
|
|
* @param {ol.ModifySegmentDataType} segmentData The object describing the line
|
|
* segment which should contain the closest point.
|
|
* @return {ol.Coordinate} The point closest to the specified line segment.
|
|
*/
|
|
ol.interaction.Modify.closestOnSegmentData_ = function(pointCoordinates, segmentData) {
|
|
var geometry = segmentData.geometry;
|
|
|
|
if (geometry.getType() === ol.geom.GeometryType.CIRCLE &&
|
|
segmentData.index === ol.interaction.Modify.MODIFY_SEGMENT_CIRCLE_CIRCUMFERENCE_INDEX) {
|
|
return geometry.getClosestPoint(pointCoordinates);
|
|
}
|
|
return ol.coordinate.closestOnSegment(pointCoordinates, segmentData.segment);
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {ol.ModifySegmentDataType} 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 = /** @type {number} */ (segmentData.index);
|
|
var coordinates;
|
|
|
|
while (vertex.length < geometry.getStride()) {
|
|
vertex.push(0);
|
|
}
|
|
|
|
switch (geometry.getType()) {
|
|
case ol.geom.GeometryType.MULTI_LINE_STRING:
|
|
coordinates = geometry.getCoordinates();
|
|
coordinates[depth[0]].splice(index + 1, 0, vertex);
|
|
break;
|
|
case ol.geom.GeometryType.POLYGON:
|
|
coordinates = geometry.getCoordinates();
|
|
coordinates[depth[0]].splice(index + 1, 0, vertex);
|
|
break;
|
|
case ol.geom.GeometryType.MULTI_POLYGON:
|
|
coordinates = geometry.getCoordinates();
|
|
coordinates[depth[1]][depth[0]].splice(index + 1, 0, vertex);
|
|
break;
|
|
case ol.geom.GeometryType.LINE_STRING:
|
|
coordinates = geometry.getCoordinates();
|
|
coordinates.splice(index + 1, 0, vertex);
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
this.setGeometryCoordinates_(geometry, coordinates);
|
|
var rTree = this.rBush_;
|
|
rTree.remove(segmentData);
|
|
this.updateSegmentIndices_(geometry, index, depth, 1);
|
|
var newSegmentData = /** @type {ol.ModifySegmentDataType} */ ({
|
|
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.ModifySegmentDataType} */ ({
|
|
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]);
|
|
this.ignoreNextSingleClick_ = true;
|
|
};
|
|
|
|
/**
|
|
* Removes the vertex currently being pointed.
|
|
* @return {boolean} True when a vertex was removed.
|
|
* @api
|
|
*/
|
|
ol.interaction.Modify.prototype.removePoint = function() {
|
|
if (this.lastPointerEvent_ && this.lastPointerEvent_.type != ol.MapBrowserEventType.POINTERDRAG) {
|
|
var evt = this.lastPointerEvent_;
|
|
this.willModifyFeatures_(evt);
|
|
this.removeVertex_();
|
|
this.dispatchEvent(new ol.interaction.Modify.Event(
|
|
ol.interaction.ModifyEventType.MODIFYEND, this.features_, evt));
|
|
this.modified_ = false;
|
|
return true;
|
|
}
|
|
return false;
|
|
};
|
|
|
|
/**
|
|
* Removes a vertex from all matching features.
|
|
* @return {boolean} True when a vertex was removed.
|
|
* @private
|
|
*/
|
|
ol.interaction.Modify.prototype.removeVertex_ = function() {
|
|
var dragSegments = this.dragSegments_;
|
|
var segmentsByFeature = {};
|
|
var deleted = false;
|
|
var component, coordinates, dragSegment, geometry, i, index, left;
|
|
var newIndex, right, segmentData, uid;
|
|
for (i = dragSegments.length - 1; i >= 0; --i) {
|
|
dragSegment = dragSegments[i];
|
|
segmentData = dragSegment[0];
|
|
uid = ol.getUid(segmentData.feature);
|
|
if (segmentData.depth) {
|
|
// separate feature components
|
|
uid += '-' + segmentData.depth.join('-');
|
|
}
|
|
if (!(uid in segmentsByFeature)) {
|
|
segmentsByFeature[uid] = {};
|
|
}
|
|
if (dragSegment[1] === 0) {
|
|
segmentsByFeature[uid].right = segmentData;
|
|
segmentsByFeature[uid].index = segmentData.index;
|
|
} else if (dragSegment[1] == 1) {
|
|
segmentsByFeature[uid].left = segmentData;
|
|
segmentsByFeature[uid].index = segmentData.index + 1;
|
|
}
|
|
|
|
}
|
|
for (uid in segmentsByFeature) {
|
|
right = segmentsByFeature[uid].right;
|
|
left = segmentsByFeature[uid].left;
|
|
index = segmentsByFeature[uid].index;
|
|
newIndex = index - 1;
|
|
if (left !== undefined) {
|
|
segmentData = left;
|
|
} else {
|
|
segmentData = right;
|
|
}
|
|
if (newIndex < 0) {
|
|
newIndex = 0;
|
|
}
|
|
geometry = segmentData.geometry;
|
|
coordinates = geometry.getCoordinates();
|
|
component = coordinates;
|
|
deleted = false;
|
|
switch (geometry.getType()) {
|
|
case ol.geom.GeometryType.MULTI_LINE_STRING:
|
|
if (coordinates[segmentData.depth[0]].length > 2) {
|
|
coordinates[segmentData.depth[0]].splice(index, 1);
|
|
deleted = true;
|
|
}
|
|
break;
|
|
case ol.geom.GeometryType.LINE_STRING:
|
|
if (coordinates.length > 2) {
|
|
coordinates.splice(index, 1);
|
|
deleted = true;
|
|
}
|
|
break;
|
|
case ol.geom.GeometryType.MULTI_POLYGON:
|
|
component = component[segmentData.depth[1]];
|
|
/* falls through */
|
|
case ol.geom.GeometryType.POLYGON:
|
|
component = component[segmentData.depth[0]];
|
|
if (component.length > 4) {
|
|
if (index == component.length - 1) {
|
|
index = 0;
|
|
}
|
|
component.splice(index, 1);
|
|
deleted = true;
|
|
if (index === 0) {
|
|
// close the ring again
|
|
component.pop();
|
|
component.push(component[0]);
|
|
newIndex = component.length - 1;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
// pass
|
|
}
|
|
|
|
if (deleted) {
|
|
this.setGeometryCoordinates_(geometry, coordinates);
|
|
var segments = [];
|
|
if (left !== undefined) {
|
|
this.rBush_.remove(left);
|
|
segments.push(left.segment[0]);
|
|
}
|
|
if (right !== undefined) {
|
|
this.rBush_.remove(right);
|
|
segments.push(right.segment[1]);
|
|
}
|
|
if (left !== undefined && right !== undefined) {
|
|
var newSegmentData = /** @type {ol.ModifySegmentDataType} */ ({
|
|
depth: segmentData.depth,
|
|
feature: segmentData.feature,
|
|
geometry: segmentData.geometry,
|
|
index: newIndex,
|
|
segment: segments
|
|
});
|
|
this.rBush_.insert(ol.extent.boundingExtent(newSegmentData.segment),
|
|
newSegmentData);
|
|
}
|
|
this.updateSegmentIndices_(geometry, index, segmentData.depth, -1);
|
|
if (this.vertexFeature_) {
|
|
this.overlay_.getSource().removeFeature(this.vertexFeature_);
|
|
this.vertexFeature_ = null;
|
|
}
|
|
dragSegments.length = 0;
|
|
}
|
|
|
|
}
|
|
return deleted;
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {ol.geom.SimpleGeometry} geometry Geometry.
|
|
* @param {Array} coordinates Coordinates.
|
|
* @private
|
|
*/
|
|
ol.interaction.Modify.prototype.setGeometryCoordinates_ = function(geometry, coordinates) {
|
|
this.changingFeature_ = true;
|
|
geometry.setCoordinates(coordinates);
|
|
this.changingFeature_ = false;
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {ol.geom.SimpleGeometry} geometry Geometry.
|
|
* @param {number} index Index.
|
|
* @param {Array.<number>|undefined} depth Depth.
|
|
* @param {number} delta Delta (1 or -1).
|
|
* @private
|
|
*/
|
|
ol.interaction.Modify.prototype.updateSegmentIndices_ = function(
|
|
geometry, index, depth, delta) {
|
|
this.rBush_.forEachInExtent(geometry.getExtent(), function(segmentDataMatch) {
|
|
if (segmentDataMatch.geometry === geometry &&
|
|
(depth === undefined || segmentDataMatch.depth === undefined ||
|
|
ol.array.equals(segmentDataMatch.depth, depth)) &&
|
|
segmentDataMatch.index > index) {
|
|
segmentDataMatch.index += delta;
|
|
}
|
|
});
|
|
};
|
|
|
|
|
|
/**
|
|
* @return {ol.StyleFunction} Styles.
|
|
*/
|
|
ol.interaction.Modify.getDefaultStyleFunction = function() {
|
|
var style = ol.style.Style.createDefaultEditing();
|
|
return function(feature, resolution) {
|
|
return style[ol.geom.GeometryType.POINT];
|
|
};
|
|
};
|
|
|
|
|
|
/**
|
|
* @classdesc
|
|
* Events emitted by {@link ol.interaction.Modify} instances are instances of
|
|
* this type.
|
|
*
|
|
* @constructor
|
|
* @extends {ol.events.Event}
|
|
* @implements {oli.ModifyEvent}
|
|
* @param {ol.interaction.ModifyEventType} type Type.
|
|
* @param {ol.Collection.<ol.Feature>} features The features modified.
|
|
* @param {ol.MapBrowserPointerEvent} mapBrowserPointerEvent Associated
|
|
* {@link ol.MapBrowserPointerEvent}.
|
|
*/
|
|
ol.interaction.Modify.Event = function(type, features, mapBrowserPointerEvent) {
|
|
|
|
ol.events.Event.call(this, type);
|
|
|
|
/**
|
|
* The features being modified.
|
|
* @type {ol.Collection.<ol.Feature>}
|
|
* @api
|
|
*/
|
|
this.features = features;
|
|
|
|
/**
|
|
* Associated {@link ol.MapBrowserEvent}.
|
|
* @type {ol.MapBrowserEvent}
|
|
* @api
|
|
*/
|
|
this.mapBrowserEvent = mapBrowserPointerEvent;
|
|
};
|
|
ol.inherits(ol.interaction.Modify.Event, ol.events.Event);
|