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Best way to rotate an object [message #629454]

Tue, 28 September 2010 10:35

VincentL

Messages: 88
Registered: July 2009

Member

Hi,

What is the best way to implements a rotate feature on an object ?

Is there any examples ?

Thanks for your anwsers...

Regards

Vincent

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Re: Best way to rotate an object [message #629507 is a reply to message #629454]

Tue, 28 September 2010 14:15

Tim Kaiser

Messages: 118
Registered: July 2009

Senior Member

Hi,

there is no out-of-the box rotate in Graphiti as of now.

But you might implement a Custom Feature
and do the rotation on GEF basis (use Transform).
It works well for instance with a Polygon Graphics Algorithm.
You can just rotate the underlying points,
(you have to map between draw2d points and
graphiti metamodel points)

Best, Tim

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Re: Best way to rotate an object [message #629629 is a reply to message #629507]

Wed, 29 September 2010 02:42

VincentL

Messages: 88
Registered: July 2009

Member

Tim Kaiser wrote:
> Hi,
>
> there is no out-of-the box rotate in Graphiti as of now.
>
> But you might implement a Custom Feature
> and do the rotation on GEF basis (use Transform).
> It works well for instance with a Polygon Graphics Algorithm. You can
> just rotate the underlying points,
> (you have to map between draw2d points and
> graphiti metamodel points)
>
> Best, Tim
>

Hi Tim,

I understand that it is easy to rotate simple polygons (graphics algorithm,) but I would
also like to understand how to rotate containerShapes, shapes since GA should also be rotated.

Could you provide me an example? I not sure to understand

Thanks for your answer

Best regards

Vincent

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Re: Best way to rotate an object [message #629672 is a reply to message #629454]

Wed, 29 September 2010 08:28

Tim Kaiser

Messages: 118
Registered: July 2009

Senior Member

Hi Vincent,

ContainerShapes are PictogramElements, as such they are
elements for describing the structure of a diagram.

Rotating certain graphical representations does not change the containment structure of the diagram elements.
It affects only their GraphicAlgorithms.

If you want to rotate complex graphics algorithms with child algorithms
you have to compute the new coordinates "by hand".

Best regards, Tim

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Re: Best way to rotate an object [message #631530 is a reply to message #629672]

Thu, 07 October 2010 20:41

VincentL

Messages: 88
Registered: July 2009

Member

Hi Tim,

Sorry, you are right! I'm starting using graphiti!

I tried what you said and it works fine except one thing....

When I change all my shapes' location in my rotate feature (using for example setX or
setY), it doesn't update the pictogram. (the coordinates are correctly change) but the
pictogram is not refresh...

It only update the pictogram if I also change the width and height of the item. It is normal?

I tried to call "layoutPictogramElement(pe)" to force the layout at the end of the rotate
feature but it doesn't work.

What should I call to force pictogram refresh at the end of the rotate feature ?

Thanks

Regards,

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