Hi Diego.

That is another alternative. Anyway, in what I'm doing it makes no sense 
to have ZoomCanvas, TranslationCanvas, or RotationCanvas. Have you 
looked at my Location / CoordinateSyste stuff?

Cheers,
Juan Vuletich

Diego Gomez Deck escribió:
> Hi Juan,
>
>   
>>>> Something pending is the means for drawing only what is really 
>>>> visible. The first I can think of is a 2nd parameter to #drawOn:, 
>>>> consisting of a clipping rectangle.
>>>>         
>>> Or, store it in the canvas. Not sure which way would be better.
>>>
>>>       
>> Mmmmhhhh. Not sure. Will have to think about this, and perhaps 
>> experiment a bit with the alternatives, to see where they lead.
>>     
>
> Other alternative is to use the Decorator Pattern. Decorate the original
> canvas with a ClippedCanvas that only take care of the clipping area,
> and delegates the rest.  The very same can be done with ZoomCanvas,
> TranslationCanvas, RotationCanvas, etc.
>
> Cheers,
>
> -- Diego
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