1 files changed, 16 insertions, 0 deletions
diff --git a/src/location/maps/qgeoprojection.cpp b/src/location/maps/qgeoprojection.cpp
index 783193ed..7fefba27 100644
--- a/src/location/maps/qgeoprojection.cpp
+++ b/src/location/maps/qgeoprojection.cpp
@@ -73,6 +73,17 @@ QGeoProjection::~QGeoProjection()
 
 }
 
+QGeoCoordinate QGeoProjection::anchorCoordinateToPoint(const QGeoCoordinate &coordinate, const QPointF &anchorPoint) const
+{
+    // Approach: find the displacement in (wrapped) mercator space, and apply that to the center
+    QDoubleVector2D centerProj = geoToWrappedMapProjection(cameraData().center());
+    QDoubleVector2D coordProj  = geoToWrappedMapProjection(coordinate);
+
+    QDoubleVector2D anchorProj = itemPositionToWrappedMapProjection(QDoubleVector2D(anchorPoint));
+    // Y-clamping done in mercatorToCoord
+    return wrappedMapProjectionToGeo(centerProj + coordProj - anchorProj);
+}
+
 /*
  * QGeoProjectionWebMercator implementation
 */
@@ -490,6 +501,11 @@ void QGeoProjectionWebMercator::updateVisibleRegion()
         m_visibleRegion = QClipperUtils::pathToQList(res[0]); // Intersection between two convex quadrilaterals should always be a single polygon
 }
 
+QGeoCameraData QGeoProjectionWebMercator::cameraData() const
+{
+    return m_cameraData;
+}
+
 /*
  *
  *  Line implementation