Terminate early during long operations like RouteAllArrows and FindAllPaths - Diagramming Components

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Terminate early during long operations like RouteAllArrows and FindAllPaths (Read 5768 times)

bt1 YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 4 Joined: Oct 18^th, 2011	Terminate early during long operations like RouteAllArrows and FindAllPaths Sep 17^th, 2013 at 11:07am	Print Post
	Hi, I am working with large interactive graphs and most operations like FindAllPaths, RouteAllArrows and ArrangeDiagram can take a long time to run (especially RouteAllArrows). I do all graph operations in background threads so the rest of my GUI remains responsive and this is working nicely. I need to be able to gracefully terminate background threads on demand. Calling kernel32!TerminateThread is not a solution as I need clean-up code and other things to execute when the thread is finishing up. For all my non-graph background threads I can test if the current thread has been signalled to terminate and if so then stop the current operation early. I cant seem to do this with a FlowChartX control. How do I signal long operations (FindAllPaths, RouteAllArrows and ArrangeDiagram) to finish early? is there a variable I can set to force a FlowChart component to finish its current operation early, or is there a callback I can use? Thanks.


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: Terminate early during long operations like RouteAllArrows and FindAllPaths Reply #1 - Sep 17^th, 2013 at 12:59pm	Print Post
	Hi, RouteAllArrows just loops over all arrows and calls their Route method. So you could implement your own for-each loop that calls arrow.Route and breaks if some bool variable is set. You could do something similar for ArrangeDiagram if using force-directed algorithms (spring, anneal, grid, circular layouts). E.g. run only a few iterations inside the loop, break if a variable is set, otherwise continue with more iterations. I hope that helps, Stoyan


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bt1 YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 4 Joined: Oct 18^th, 2011	Re: Terminate early during long operations like RouteAllArrows and FindAllPaths Reply #2 - Sep 17^th, 2013 at 2:05pm	Print Post
	Thanks, implementing a simple RouteAllArrows method which checks for early termination is working perfectly. I can get by without early termination for FindAllPaths and ArrangeDiagram for now, although perhaps this could be a feature in a future version. Thank you very much for your help


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