funktioniert nicht so ganz

scheissjungmousewheelscrolldreckfuck.java

 final EditingModalGraphMouse<Number,Number> graphMouse = 
        	new EditingModalGraphMouse<Number,Number>(vv.getRenderContext(), vertexFactory, edgeFactory, 1,1);
        
        graphMouse.setZoomAtMouse(false);
        
        // the EditingGraphMouse will pass mouse event coordinates to the
        // vertexLocations function to set the locations of the vertices as
        // they are created
//        graphMouse.setVertexLocations(vertexLocations);
        vv.setGraphMouse(graphMouse);
        vv.addKeyListener(graphMouse.getModeKeyListener());
        vv.addMouseWheelListener(new MouseWheelListener() {
        Point down = new Point();
		private int previous = 0;
			@Override
			public void mouseWheelMoved(MouseWheelEvent e) {
				VisualizationViewer vv = (VisualizationViewer)e.getSource();
		        
		        if(true) {
		            MutableTransformer modelTransformer = vv.getRenderContext().getMultiLayerTransformer().getTransformer(Layer.LAYOUT);

//					try {
		            JScrollBar sb = (JScrollBar)e.getSource();
		            BoundedRangeModel m = sb.getModel();
		            int vval = m.getValue();
		            float dv = previous - vval;
		            previous = vval;
			            int hval = e.getUnitsToScroll();
			            float dh = hval;
//			            float dh = previous - hval;
//			            previous = hval;
			            System.out.println("mouse scroll: "+dh);
			            
			            if(dh != 0) {
			                // get the uniform scale of all transforms
			                float layoutScale = (float) vv.getRenderContext().getMultiLayerTransformer().getTransformer(Layer.LAYOUT).getScale();
			                dh *= layoutScale;
			                System.out.println("dh * scaled: "+dh);
			                AffineTransform at = AffineTransform.getTranslateInstance(0, -dh);
			                vv.getRenderContext().getMultiLayerTransformer().getTransformer(Layer.LAYOUT).preConcatenate(at);
			            }
			                
//		                Point2D q = vv.getRenderContext().getMultiLayerTransformer().inverseTransform(down);
//		                Point2D p = vv.getRenderContext().getMultiLayerTransformer().inverseTransform(e.getPoint());
//		                float dx = (float) (p.getX()-q.getX());
//		                float dy = (float) (p.getY()-q.getY());
//		                
//		                modelTransformer.translate(dx, dy);
//		                down.x = e.getX();
//		                down.y = e.getY();
//		            } catch(RuntimeException ex) {
//		                System.err.println("down = "+down+", e = "+e);
//		                throw ex;
//		            }
//		        
		            e.consume();
		            vv.repaint();
		        }
				
			}
		});