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Efficiently drawing graphics [message #201291]

Mon, 11 August 2008 08:14

Eclipse User

Originally posted by: tobk42.gmx.de

Hello,

can you tell me what's the most efficient way of drawing graphics in
GMF? I'm talking about node symbols, e.g. Event Markers in BPMN. Should
I use the paintFigure method, using the draw...-Methods of the
Graphics object, or the createContents method generated by GMF, creating
a number of nested draw2D-Objects? Intuitively, I think the paintFigure
method is more "low-level" and as such more efficient. Am I right?

Regards,
Tobias

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Re: Efficiently drawing graphics [message #201355 is a reply to message #201291]

Mon, 11 August 2008 09:14

Alexander Shatalin

Messages: 2928
Registered: July 2009

Senior Member

Hello tobias,

> paintFigure method is more "low-level" and as such more efficient. Am
> I right?
Yes, you are right. As any "low-level" method this way to draw shapes in
addition is more complicated in case of drawing some complex shapes with
complex layouts inside, so you have to decide either to use "paint" method
for this rather simple figure or to compose whole figure using draw2d primitives.
Concerning performance - I doubt you'll see the difference.

-----------------
Alex Shatalin

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