OfflineRegionDefinition decodeOfflineRegionDefinition(const std::string& region) {
rapidjson::GenericDocument<rapidjson::UTF8<>, rapidjson::CrtAllocator> doc;
doc.Parse<0>(region.c_str());
if (doc.HasParseError() ||
!doc.HasMember("style_url") || !doc["style_url"].IsString() ||
!doc.HasMember("bounds") || !doc["bounds"].IsArray() || doc["bounds"].Size() != 4 ||
!doc["bounds"][0].IsDouble() || !doc["bounds"][1].IsDouble() ||
!doc["bounds"][2].IsDouble() || !doc["bounds"][3].IsDouble() ||
!doc.HasMember("min_zoom") || !doc["min_zoom"].IsDouble() ||
(doc.HasMember("max_zoom") && !doc["max_zoom"].IsDouble()) ||
!doc.HasMember("pixel_ratio") || !doc["pixel_ratio"].IsDouble()) {
throw std::runtime_error("Malformed offline region definition");
}
std::string styleURL { doc["style_url"].GetString(), doc["style_url"].GetStringLength() };
LatLngBounds bounds = LatLngBounds::hull(
LatLng(doc["bounds"][0].GetDouble(), doc["bounds"][1].GetDouble()),
LatLng(doc["bounds"][2].GetDouble(), doc["bounds"][3].GetDouble()));
double minZoom = doc["min_zoom"].GetDouble();
double maxZoom = doc.HasMember("max_zoom") ? doc["max_zoom"].GetDouble() : INFINITY;
float pixelRatio = doc["pixel_ratio"].GetDouble();
return { styleURL, bounds, minZoom, maxZoom, pixelRatio };
}
OfflineRegionDefinition decodeOfflineRegionDefinition(const std::string& region) {
rapidjson::GenericDocument<rapidjson::UTF8<>, rapidjson::CrtAllocator> doc;
doc.Parse<0>(region.c_str());
// validation
auto hasValidBounds = [&] {
return doc.HasMember("bounds") && doc["bounds"].IsArray() && doc["bounds"].Size() == 4
&& doc["bounds"][0].IsDouble() && doc["bounds"][1].IsDouble()
&& doc["bounds"][2].IsDouble() && doc["bounds"][3].IsDouble();
};
auto hasValidGeometry = [&] {
return doc.HasMember("geometry") && doc["geometry"].IsObject();
};
if (doc.HasParseError()
|| !doc.HasMember("style_url") || !doc["style_url"].IsString()
|| !(hasValidBounds() || hasValidGeometry())
|| !doc.HasMember("min_zoom") || !doc["min_zoom"].IsDouble()
|| (doc.HasMember("max_zoom") && !doc["max_zoom"].IsDouble())
|| !doc.HasMember("pixel_ratio") || !doc["pixel_ratio"].IsDouble()
|| (doc.HasMember("include_ideographs") && !doc["include_ideographs"].IsBool())) {
throw std::runtime_error("Malformed offline region definition");
}
// Common properties
std::string styleURL { doc["style_url"].GetString(), doc["style_url"].GetStringLength() };
double minZoom = doc["min_zoom"].GetDouble();
double maxZoom = doc.HasMember("max_zoom") ? doc["max_zoom"].GetDouble() : INFINITY;
float pixelRatio = doc["pixel_ratio"].GetDouble();
bool includeIdeographs = doc.HasMember("include_ideographs") ? doc["include_ideographs"].GetBool() : true;
if (doc.HasMember("bounds")) {
return OfflineTilePyramidRegionDefinition{
styleURL,
LatLngBounds::hull(
LatLng(doc["bounds"][0].GetDouble(), doc["bounds"][1].GetDouble()),
LatLng(doc["bounds"][2].GetDouble(), doc["bounds"][3].GetDouble())),
minZoom, maxZoom, pixelRatio, includeIdeographs };
} else {
return OfflineGeometryRegionDefinition{
styleURL,
mapbox::geojson::convert<Geometry<double>>(doc["geometry"].GetObject()),
minZoom, maxZoom, pixelRatio, includeIdeographs };
};
}
static inline const LatLng latLngForProjectedMeters(const ProjectedMeters projectedMeters) {
double latitude = (2 * std::atan(std::exp(projectedMeters.northing / util::EARTH_RADIUS_M)) - (M_PI / 2)) * util::RAD2DEG;
double longitude = projectedMeters.easting * util::RAD2DEG / util::EARTH_RADIUS_M;
latitude = std::fmin(std::fmax(latitude, -util::LATITUDE_MAX), util::LATITUDE_MAX);
return LatLng(latitude, longitude);
}
void Map::resetPosition() {
CameraOptions options;
options.angle = 0;
options.center = LatLng(0, 0);
options.zoom = 0;
transform->jumpTo(options);
update(Update::Zoom);
}
void MapPage::evalSetPolylineAndFitBounds(const QList<QPointF> &apoly) const {
QString cmd = "var poly=[];";
for (int i=0; i<apoly.length(); i++) {
cmd += "poly.push(" + LatLng(apoly[i]) + ");";
}
cmd += "curRoute.setPolylineAndFitBounds(poly);";
// qDebug() << "evalSetPolylineAndFitBounds()" << cmd;
this->mainFrame()->evaluateJavaScript(cmd);
}
static LatLng latLngForProjectedMeters(const ProjectedMeters& projectedMeters) {
double latitude = (2 * std::atan(std::exp(projectedMeters.northing / util::EARTH_RADIUS_M)) - (M_PI / 2.0)) * util::RAD2DEG;
double longitude = projectedMeters.easting * util::RAD2DEG / util::EARTH_RADIUS_M;
latitude = util::clamp(latitude, -util::LATITUDE_MAX, util::LATITUDE_MAX);
longitude = util::clamp(longitude, -util::LONGITUDE_MAX, util::LONGITUDE_MAX);
return LatLng(latitude, longitude);
}
void MapPage::evalJoinWithCurRoute(const MapRoute &amapRoute) const {
QString cmd = "var poly=[];";
for (int i=0; i<amapRoute.getPolyline().length(); i++) {
cmd += "poly.push(" + LatLng(amapRoute.getPolyline().at(i)) + ");";
}
cmd += QString("var len=%1;").arg(amapRoute.getDistanceInMeter());
cmd += "curRoute.joinWithCurRoute(poly,len);";
// qDebug() << "evalJoinWithCurRoute=" << cmd;
this->mainFrame()->evaluateJavaScript(cmd);
}
void extend(const LatLng& point) {
sw = LatLng(std::min(point.latitude(), sw.latitude()),
std::min(point.longitude(), sw.longitude()));
ne = LatLng(std::max(point.latitude(), ne.latitude()),
std::max(point.longitude(), ne.longitude()));
}
LatLng center() const {
return LatLng((sw.latitude() + ne.latitude()) / 2,
(sw.longitude() + ne.longitude()) / 2);
}
LatLng northwest() const { return LatLng(north(), west()); }
LatLng southeast() const { return LatLng(south(), east()); }
void Map::resetPosition() {
transform->setAngle(0);
transform->setLatLng(LatLng(0, 0));
transform->setZoom(0);
update(Update::Zoom);
}
void MapPage::evalSetPrevPos(QPointF aprevPos) const {
QString cmd = "curRoute.setPrevPos(" + LatLng(aprevPos) + ");";
qDebug() << "evalSetPrevPos()" << cmd;
this->mainFrame()->evaluateJavaScript(cmd);
}
