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Re: object graphics: any similar tools already written? [message #54219 is a reply to message #54216]

Fri, 25 May 2007 16:01

Robbie
Messages: 165
Registered: February 2006

Senior Member

Generally I don't feel comfortable with event loops which are as long
as yours. An idea I came up with was to write a "control" object for
each type of movement operation on the object graphic. For example,
you can add any model or scalable object graphic the 'zoom control'.
The control class takes care of capturing and sending events to
the ::event method. It also takes care of redrawing for you and will
do delayed redraws reduce the calls to the ::draw method.

You could combine many controls to get the same effect as yours. The
advantage is that the same controls can be used for all relevant
object graphics.

Source code for my control class is available from http://barnett.id.au/idl/
I have a personal library of my own controls, which are available on
request.

I'm curious to know how someone else would use the control class. I
can't help but feel that my personal library of controls is biased to
my set of problems. I'm not sure that it's as generic as I'd like it
to be and someone else might have better ideas of how to implement the
same thing.

Robbie

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[Message index]

		Re: object graphics: any similar tools already written? By: jkj on Sun, 27 May 2007 02:51
		Re: object graphics: any similar tools already written? By: Robbie on Sat, 26 May 2007 05:00
		Re: object graphics: any similar tools already written? By: jkj on Sat, 26 May 2007 00:00
		Re: object graphics: any similar tools already written? By: Robbie on Fri, 25 May 2007 16:01

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