// Set TerrainWarningOverlay the Aircraft position is fixed above Gothenburg. This
// terrain warning in this example is at a fixed position and altitude it is also
// possible to generate the warning from a point feature read from a MemoryDataSet.
static void setTerrainWarningOverlay(ViewPtr view)
{
    // The center coordinates of Gothenburg in wgs84LatLong and 500m above the ground
    Point aboveGothenburgCenter(11.974560, 57.708870, 500.0);

    // Project the center coordinates of Gothenburg to the Crs of the View
    aboveGothenburgCenter = view->crs()->projectFromLongLat(aboveGothenburgCenter);

    // Create new TerrainWarningOverlay with the position of Gothenburg and a maximum
    // distance of 1000m
    TerrainWarningOverlayPtr terrainWarningOverlay = 
        new TerrainWarningOverlay(aboveGothenburgCenter, 1000);

    // Create a ColorTable entry to visualize where the distance to the ground is 
    // smaller than 100m
    KeyedColorAttributeVariablePtr colorTable = 
        dynamic_cast<KeyedColorAttributeVariable*>(
            terrainWarningOverlay->colorTable().get());
    colorTable->table()->add(100, Color(255, 0, 0));

    // Set the TerrainWarningOverlay in the View
    view->terrainWarningOverlay(terrainWarningOverlay);

    // Update the View
    view->update();
}