private void PerformLayout(Hashtable args)
{
// create a layout
NBarycenterLayout layout = new NBarycenterLayout();
// configure the optional forces
layout.BounceBackForce.RepulsionCoefficient = 20f;
layout.GravityForce.AttractionCoefficient = 0.2f;
// free vertices are placed in the fixed vertices barycenter
layout.FreeVertexPlacement.Mode = FreeVertexPlacementMode.FixedBarycenter;
// fixed vertices are placed on the rim of the specified ellipse
layout.FixedVertexPlacement.Mode = FixedVertexPlacementMode.PredefinedEllipseRim;
layout.FixedVertexPlacement.PredefinedEllipseBounds = new NRectangleF(0, 0, 700, 700);
// configure the layout
if (args != null)
{
layout.BounceBackForce.Enabled = Boolean.Parse(args["BounceBackForce"].ToString());
layout.GravityForce.Enabled = Boolean.Parse(args["GravityForce"].ToString());
layout.MinFixedVerticesCount = Int32.Parse(args["MinFixedVerticesCount"].ToString());
}
// get the shapes to layout
NNodeList shapes = NDrawingView1.Document.ActiveLayer.Children(NFilters.Shape2D);
// layout the shapes
layout.Layout(shapes, new NDrawingLayoutContext(NDrawingView1.Document));
// resize document to fit all shapes
NDrawingView1.Document.SizeToContent();
}
