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authorAnton Tananaev <anton.tananaev@gmail.com>2016-07-04 23:08:13 +1200
committerGitHub <noreply@github.com>2016-07-04 23:08:13 +1200
commitc8735de4c31037f16b5f68420bff2d2f6419bae5 (patch)
tree0ebc706e37774445afd0c5726a4fbc497983213b /web/app/GeofenceConverter.js
parent7734bfa85228ec85d86a9e1435da568bac0f907b (diff)
parent23796ee74a04f87d5dd028dffffa8a992c5c662d (diff)
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Merge pull request #2076 from Abyss777/master
Add geometry WKT encoder and decoder
Diffstat (limited to 'web/app/GeofenceConverter.js')
-rw-r--r--web/app/GeofenceConverter.js79
1 files changed, 79 insertions, 0 deletions
diff --git a/web/app/GeofenceConverter.js b/web/app/GeofenceConverter.js
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+/*
+ * Copyright 2016 Anton Tananaev (anton.tananaev@gmail.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+Ext.define('Traccar.GeofenceConverter', {
+ singleton: true,
+
+ wktToGeometry: function (mapView, wkt) {
+ var geometry, projection, resolutionAtEquator, pointResolution, resolutionFactor, points = [], center, radius,
+ content, i, lat, lon, coordinates;
+ if (wkt.startsWith("POLYGON")) {
+ content = wkt.match(/\([^\(\)]+\)/);
+ if (content !== null) {
+ coordinates = content[0].match(/-?\d+\.?\d*/g);
+ if (coordinates !== null) {
+ projection = mapView.getProjection();
+ for (i = 0; i < coordinates.length; i += 2) {
+ lat = Number(coordinates[i]);
+ lon = Number(coordinates[i + 1]);
+ points.push(ol.proj.transform([lon, lat], 'EPSG:4326', projection));
+ }
+ geometry = new ol.geom.Polygon([points]);
+ }
+ }
+ } else if (wkt.startsWith("CIRCLE")) {
+ content = wkt.match(/\([^\(\)]+\)/);
+ if (content !== null) {
+ coordinates = content[0].match(/-?\d+\.?\d*/g);
+ if (coordinates !== null) {
+ projection = mapView.getProjection();
+ center = ol.proj.transform([Number(coordinates[1]), Number(coordinates[0])], 'EPSG:4326', projection);
+ resolutionAtEquator = mapView.getResolution();
+ pointResolution = projection.getPointResolution(resolutionAtEquator, center);
+ resolutionFactor = resolutionAtEquator / pointResolution;
+ radius = (Number(coordinates[2]) / ol.proj.METERS_PER_UNIT.m) * resolutionFactor;
+ geometry = new ol.geom.Circle(center, radius);
+ }
+ }
+ }
+ return geometry;
+ },
+
+ geometryToWkt: function (projection, geometry) {
+ var result, i, center, radius, edgeCoordinate, earthSphere, groundRadius, points;
+ if (geometry instanceof ol.geom.Circle) {
+ center = geometry.getCenter();
+ radius = geometry.getRadius();
+ edgeCoordinate = [center[0] + radius, center[1]];
+ center = ol.proj.transform(center, projection, 'EPSG:4326');
+ earthSphere = new ol.Sphere(6378137);
+ groundRadius = earthSphere.haversineDistance(center,
+ ol.proj.transform(edgeCoordinate, projection, 'EPSG:4326'));
+ result = "CIRCLE (";
+ result += center[1] + " " + center[0] + ", ";
+ result += Number((groundRadius).toFixed(1)) + ")";
+ } else if (geometry instanceof ol.geom.Polygon) {
+ geometry.transform(projection, 'EPSG:4326');
+ points = geometry.getCoordinates();
+ result = "POLYGON((";
+ for (i = 0; i < points[0].length; i += 1) {
+ result += points[0][i][1] + " " + points[0][i][0] + ", ";
+ }
+ result = result.substring(0, result.length - 2) + "))";
+ }
+ return result;
+ }
+});