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Normal Topic overlaid nodes (Read 1441 times)
BidMaestro
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overlaid nodes
Jul 26th, 2009 at 12:21am
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Stoyo

I create a chart which has a shapenode with a link to a tablenode; when the diagram is created the tablenode link is collapsed. The user at some stage may then expand the collapsed display to reveal the tablenode....this all works fine... however in most cases the tablenode on being revealed is usally displayed on top of some other node(s).

Is there a means of detecting via the expandbuttonclicked as to whether the tablenode is overlaid on other node(s) and relocate it to blank area in the diagram?

regards
Doug
  
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Stoyo
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Re: overlaid nodes
Reply #1 - Jul 26th, 2009 at 9:20am
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Hi Doug,

The expand button shows the nodes at their original positions. You could use the DiagramNode.Intersects method to find out whether the table intersects with any other node in the diagram.

You could find an empty area by iteratively moving the table in concentric circles around the expanded node until Intersects returns false for all nodes. If this is too slow, we have a method in the link-routing class that very quickly builds a map of the empty area in the diagram; we could make it public for the next release to let you find an empty spot faster.

I hope that helps,
Stoyan
  
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BidMaestro
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Re: overlaid nodes
Reply #2 - Jul 26th, 2009 at 9:25am
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Stoyo

Thanks for that: I will try your suggestion a bit later. My other option was to do the layout first then collapse the link as the last task when creating the diagram.

Hope you are all keeping well up there.

Doug
  
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