Function ClearViewportCatchment

src/viewport.cpp:3697–3705

}

static void ClearViewportCatchment()
{
	MarkCatchmentTilesDirty();
	_viewport_highlight_station = nullptr;
	_viewport_highlight_station_rect = nullptr;
	_viewport_highlight_waypoint = nullptr;
	_viewport_highlight_waypoint_rect = nullptr;
	_viewport_highlight_town = nullptr;
}

/**
 * Select or deselect station for coverage area highlight.