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Hot Topic (More than 10 Replies) Get Grid Position of Nodes? (Read 5748 times)
mbuechler
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Get Grid Position of Nodes?
Apr 21st, 2010 at 7:07am
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Hi.

I have a diagram with several ControlNodes. For these ControlNodes I would like to save the Position in the underlying grid. Do I have the possibility to get the actual Position of an Item/node on the grid?

Thanks a lot.
  
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Stoyo
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Re: Get Grid Position of Nodes?
Reply #1 - Apr 21st, 2010 at 7:28am
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Hi,

You can get a node's position through its Bounds property. If you need to get the underlying cell of the lanes grid, call the grid's GetCellFromPoint method.

I hope that helps,
Stoyan
  
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mbuechler
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Re: Get Grid Position of Nodes?
Reply #2 - Apr 21st, 2010 at 7:38am
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Hi thanks for the answer.
But how do I get the grid from my diagram? I can only find :
diagram1.GridColor
diagram1.GridOffsetX
diagram1.GridOffsetY
diagram1.GridSizeX
diagram1.GridSizeY
diagram1.GridStyle

I mean the grid which helps the user to position the several Items. I do not mean any table,...

Thanks again
  
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Stoyo
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Re: Get Grid Position of Nodes?
Reply #3 - Apr 21st, 2010 at 8:03am
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It seems you are not using the LanesGrid then? If you need to determine where in the alignment grid (as column and row) some item is located, you can do that by subtracting the respective GridOffsetX/Y property from the item's position and dividing the result by GridSizeX/Y.

I hope that helps,
Stoyan
  
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mbuechler
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Re: Get Grid Position of Nodes?
Reply #4 - Apr 21st, 2010 at 8:43am
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Ah ok.
So there is no easy way to say "GetGridPosition", save this infos, and on loading the flowchart again say "SetGridPosition" for the Objects.
OK so I have to save X/Y Location...
  
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Stoyo
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Re: Get Grid Position of Nodes?
Reply #5 - Apr 21st, 2010 at 9:46am
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You can save and restore X and Y from node.Bounds. There wouldn't be much difference from storing columns and rows, except that X and Y are float values.

Stoyan
  
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mbuechler
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Re: Get Grid Position of Nodes?
Reply #6 - Apr 22nd, 2010 at 8:35am
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Ok I See.

Another Question is: I changed measure Unit of the diagram to Pixel, and now the Handles for resizing an item are very small. Where can I change Handlesize? Is it a property on the items or on the diagram.

Thanks again.
  
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Stoyo
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Re: Get Grid Position of Nodes?
Reply #7 - Apr 22nd, 2010 at 9:06am
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There's the Diagram.AdjustmentHandlesSize property.
  
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mbuechler
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Re: Get Grid Position of Nodes?
Reply #8 - Apr 22nd, 2010 at 9:17am
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Ah ok. Thats what I need. Thanks.
Is there also a posibility to enlarge the "border" with what you can move the item?
  
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Stoyo
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Re: Get Grid Position of Nodes?
Reply #9 - Apr 22nd, 2010 at 10:06am
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I think it is always set to half the AdjustmentHandlesSize at this time; there's no additional property to change just its size.
  
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mbuechler
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Re: Get Grid Position of Nodes?
Reply #10 - May 3rd, 2010 at 8:53am
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Thanks a lot.

I have another question about Links. Is there a property for a offset the links have? An offset between the anchor an the link itself? My problem is that a part of the head of the link is not shown. It is hidden by the Node where it is assinged to.

Thanks again
  
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Stoyo
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Re: Get Grid Position of Nodes?
Reply #11 - May 3rd, 2010 at 9:01am
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Call link.ZTop to move the head in front of the node. Otherwise you might try placing the anchor points a bit outside the node borders, or explicitly set ControlPoints[0] and ControlPoints[count - 1].

I hope that helps, 
Stoyan
  
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