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Diffstat (limited to 'legacy/web/app/GeofenceConverter.js')
-rw-r--r-- | legacy/web/app/GeofenceConverter.js | 101 |
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; + } +}); |