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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.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 = 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;
}
});
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