CreateNodeXLVisual
(
GeneralUserSettings oGeneralUserSettings
)
{
Debug.Assert(oGeneralUserSettings != null);
AssertValid();
NodeXLVisual oNodeXLVisual = new NodeXLVisual();
GraphDrawer oGraphDrawer = oNodeXLVisual.GraphDrawer;
VertexDrawer oVertexDrawer = oGraphDrawer.VertexDrawer;
EdgeDrawer oEdgeDrawer = oGraphDrawer.EdgeDrawer;
oGeneralUserSettings.TransferToGraphDrawer(oGraphDrawer);
// Override some of the user's settings.
oVertexDrawer.Shape = VertexShape.Disk;
oVertexDrawer.Radius = 2.0;
oEdgeDrawer.Width = 1;
oEdgeDrawer.SelectedWidth = 1;
return(oNodeXLVisual);
}
CreateSubgraphImage
(
IGraph oSubgraph,
CreateSubgraphImagesAsyncArgs oCreateSubgraphImagesAsyncArgs,
Size oImageSizePx
)
{
Debug.Assert(oSubgraph != null);
Debug.Assert(oCreateSubgraphImagesAsyncArgs != null);
AssertValid();
Rectangle oSubgraphRectangle = new Rectangle(new Point(0, 0),
oImageSizePx);
// Lay out the graph, then draw it using the NodeXLVisual object.
IAsyncLayout oLayout = oCreateSubgraphImagesAsyncArgs.Layout;
oLayout.LayOutGraph(oSubgraph,
new LayoutContext(oSubgraphRectangle));
NodeXLVisual oNodeXLVisual =
oCreateSubgraphImagesAsyncArgs.NodeXLVisual;
GraphDrawingContext oGraphDrawingContext =
CreateGraphDrawingContext(oSubgraphRectangle,
oLayout.Margin,
oCreateSubgraphImagesAsyncArgs.GeneralUserSettings);
oNodeXLVisual.GraphDrawer.DrawGraph(oSubgraph, oGraphDrawingContext);
// Save the graph to a bitmap.
Bitmap oBitmap = WpfGraphicsUtil.VisualToBitmap(oNodeXLVisual,
oSubgraphRectangle.Width, oSubgraphRectangle.Height);
return(oBitmap);
}
