[OpenLayers-Dev] Draw boxes on the image pressing shift key

[Andreas Hocevar]

Hi,

you could use OpenLayers.Control.TransformFeature for moving/reshaping your boxes. See http://openlayers.org/dev/examples/transform-feature.html for an example.

Regards,
Andreas.

On Aug 5, 2010, at 00:25 , Moiz Bhukhiya wrote:

> I see now what you're saying. I clicked on the checkbox and now the boxes are inline of horizontal line. But is there a way to modify the box drawn?/
> 
> Thanks.
> Moiz
> 
> On Wed, Aug 4, 2010 at 5:22 PM, Moiz Bhukhiya <moiz.bhukhiya at gmail.com> wrote:
> Thanks alot Tim for your response.
> 
> It seems like it will be helpful for resizing the square box, but how to move this square and the square box seems to be in 45 degree angle to the horizontal line. I need square to be drawn inline with horizontal line. It should be resizable by dragging it edges like we see in the Jquery plugin I mentioned. http://odyniec.net/projects/imgareaselect
> 
> 
> Thanks again for your help. I really appreciate it.
> Moiz
> 
> 
> On Wed, Aug 4, 2010 at 2:49 PM, Tim Schaub <tschaub at opengeo.org> wrote:
> On 8/4/10 12:31 PM, Moiz Bhukhiya wrote:
> > Hello Devs,
> >
> > I am using Openlayers to display images from Djatoka Image server. I am
> > using two different layers.
> > 1. To draw boxes on an image which is OpenLayers.Layer.Boxes
> > 2. To dynamically draw boxes on images I am using OpenLayers.Control()
> >
> > Using Control() functionality I can draw boxes on the image pressing
> > shift key and on mouse down, and on mouse up I can get the coordinates
> > of the box on the image. On mouse up the box disappears and I get the
> > coordinates. My problem is I do not want this box to disappear until I
> > invoke it. I want to draw the box and resize it if required (like we do
> > in Jquery crop plugin Eg:http://odyniec.net/projects/imgareaselect )
> >
> > It would be of great help if you could guide me how do I achieve this
> > functionality.
> >
> 
> Alternatively, you could use a Vector layer and a DrawFeature control
> with a RegularPolygon handler.
> 
> See http://openlayers.org/dev/examples/regular-polygons.html
> 
> Sounds like an irregular polygon with four sides (rectangle) snapped to
> 90 would give you want you want.
> 
> Tim
> 
> > Thanks,
> > Moiz
> >
> >
> >
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> 
> 
> --
> Tim Schaub
> OpenGeo - http://opengeo.org
> Expert service straight from the developers.
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> 
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-- 
Andreas Hocevar
OpenGeo - http://opengeo.org/
Expert service straight from the developers.