1 files changed, 101 insertions, 0 deletions
diff --git a/legacy/web/app/GeofenceConverter.js b/legacy/web/app/GeofenceConverter.js
new file mode 100644
index 00000000..688f2233
--- /dev/null
+++ b/legacy/web/app/GeofenceConverter.js
@@ -0,0 +1,101 @@
+/*
+ * Copyright 2016 Anton Tananaev (anton@traccar.org)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+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.lastIndexOf('POLYGON', 0) === 0) {
+            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.lastIndexOf('CIRCLE', 0) === 0) {
+            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 = ol.proj.getPointResolution(projection, resolutionAtEquator, center);
+                    resolutionFactor = resolutionAtEquator / pointResolution;
+                    radius = Number(coordinates[2]) / ol.proj.Units.METERS_PER_UNIT.m * resolutionFactor;
+                    geometry = new ol.geom.Circle(center, radius);
+                }
+            }
+        } else if (wkt.lastIndexOf('LINESTRING', 0) === 0) {
+            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.LineString(points);
+                }
+            }
+        }
+        return geometry;
+    },
+
+    geometryToWkt: function (projection, geometry) {
+        var result, i, center, radius, edgeCoordinate, 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');
+            groundRadius = ol.sphere.getDistance(
+                center, ol.proj.transform(edgeCoordinate, projection, 'EPSG:4326'), 6378137);
+            result = 'CIRCLE (';
+            result += center[1] + ' ' + center[0] + ', ';
+            result += 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) + '))';
+        } else if (geometry instanceof ol.geom.LineString) {
+            geometry.transform(projection, 'EPSG:4326');
+            points = geometry.getCoordinates();
+            result = 'LINESTRING (';
+            for (i = 0; i < points.length; i += 1) {
+                result += points[i][1] + ' ' + points[i][0] + ', ';
+            }
+            result = result.substring(0, result.length - 2) + ')';
+        }
+        return result;
+    }
+});