This example demonstrates how to apply a Hyperbolic transformation
	to a graph, either in the layout or in the view. The Hyperbolic Transform
	is contained in an 'fisheye' lens.
	
	- move the lens around the graph by mouse-dragging its center
	
- resize the lens by mouse-dragging its edge
	
- Control+MouseWheel will change the magnification of the lens.
	
Be sure to try out the rest of the mouse listeners:
    
Picking Mode:
	
	-  MouseButtonOne press on a Vertex or Edge to select it
	
-  MouseButtonOne+Shift press on a Vertex or Edge to add or toggle selection
	
-  MouseButtonOne+drag on a Vertex to move all selected vertices
	
-  MouseButtonOne+drag to select Vertices in a rectangle
	
-  MouseButtonOne+Shift+drag to add to selection with Vertices in a rectangle
	
	
TransformingMode:
	
	-  MouseButtonOne+drag to translate the display
	
-  MouseButtonOne+Shift+drag to rotate the display
	
-  MouseButtonOne+ctrl(or Command)+drag to shear the display
	
	
Both Modes:
	
	-  MouseWheel to scale. When scale < 1, view is scaled. When scale > 1, layout is scaled.