diff options
| -rw-r--r-- | map-widget/qml/MapWidget.qml | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/map-widget/qml/MapWidget.qml b/map-widget/qml/MapWidget.qml index 5d1f60624..77e52ab56 100644 --- a/map-widget/qml/MapWidget.qml +++ b/map-widget/qml/MapWidget.qml @@ -324,10 +324,33 @@ Item { } } + /* + * open coordinates in google maps while attempting to roughly preserve + * the zoom level. the mapping between the QML map zoom level and the + * Google Maps zoom level is done via exponential regression: + * y = a * exp(b * x) + * + * data set: + * qml (x) gmaps (y in meters) + * 21 257 + * 15.313216749178913 3260 + * 12.553216749178931 20436 + * 11.11321674917894 52883 + * 9.313216749178952 202114 + * 7.51321674917896 737136 + * 5.593216749178958 2495529 + * 4.153216749178957 3895765 + * 1.753216749178955 18999949 + */ function openLocationInGoogleMaps(latitude, longitude) { var loc = latitude + "," + longitude - var url = "https://www.google.com/maps/place/@" + loc + ",5000m/data=!3m1!1e3!4m2!3m1!1s0x0:0x0" + var x = map.zoomLevel + var a = 53864950.831693 + var b = -0.60455861606547030630 + var zoom = Math.floor(a * Math.exp(b * x)) + var url = "https://www.google.com/maps/place/@" + loc + "," + zoom + "m/data=!3m1!1e3!4m2!3m1!1s0x0:0x0" Qt.openUrlExternally(url) + console.log("openLocationInGoogleMaps() map.zoomLevel: " + x + ", url: " + url) } MapWidgetContextMenu { |