[Jung-support] [Open Discussion] RE: Edge length (radial/ballon layout)

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The following forum message was posted by darkbb at http://sourceforge.net/projects/jung/forums/forum/252062/topic/5463773:

I tried to modify the balloon layout like the following and it does't work:
[code]GraphBalloonLayout<myNode,myEdge> radialLayout;
Point2D pn=new Point2D.Double(500+500*(length)*Math.sin(360*i/numNode*Math.PI/180),
500-500*(length)*Math.cos(360*i/numNode*Math.PI/180));
radialLayout.setLocation(node, pn);[/code]
I have no ideas how to fix