Synchronise a static map with an interactive map
This example shows two maps. The left map allows for panning, zooming, tilting and rotation (to tilt and rotate
hold alt key plus left mouse button).
The right map is oriented top-down north-up, it observes the left map's lookAt position and visualises
the visible area of the interactive map.
The following example creates two objects H.map.Polygon and H.map.Marker that represent the current center and
the current view bounds of the interactive map. These objects are updated on every mapviewchange event and are marked as volatile
at the construction time, that enables the smooth animation of the objects.