How is ROI saved to session?

[Paul Spencer <pspencer (at) dmsolutions.ca>]

Hi,

There is code in ROIRenderer.php under the ROIManager widget ...

Cheers

Paul

On 15-Feb-06, at 2:02 PM, Yahya Mohammad wrote:

> Hi all,
>
> I'm developing a widget called ROIBoundingBoxTool that should pop  
> up a box
> like the BoundingBoxPopup widget and add a rectangular ROI at the  
> entered
> coordinates. I need this functionality in my application in order  
> to make
> more precise selections than using the mouse. So far I've managed  
> to get it
> to work without refreshing the page when the entered coords are  
> within the
> current extent.
>
> Now if the coords are beyond the extent I believe I should write to
> $_SESSION['ROIRENDERER'] and refresh the page with an extent  
> somewhat bigger
> than the selected ROI. Is this a correct approach? If so, is there an
> existing mechanism to do this? I looked at the existing ROI  
> widgets' code but
> haven't yet been able to figure out how the ROI selection data gets  
> into the
> $_SESSION variable.
>
> Thanks,
> Yahya Mohammad
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