On Saturday 03 June 2006 09:53 am, Simon Budig wrote:
> Alan Horkan ([EMAIL PROTECTED]) wrote:
> > On Sat, 3 Jun 2006, Simon Budig wrote:
> > > That sounds as if you don't clear the layer before you use it
> > > for the first time. Layers created from a Plugin are not
> > > initialized from the very beginning. They need to be cleared
> > > using e.g. gimp_drawable_fill.
> > I remember getting caught out by this too. Why is necessary to
> > manually clear a new layer rather than have it done
> > automatically?
> I have no strong opinions on that. I guess the reasoning behind
> this behaviour was a speed optimization: If a plugin later renders
> stuff to a new layer anyway it would be a waste of time to clear it
> automatically. If it doesn't it would just invoke
> gimp_drawable_fill. No harm done, except that you have to know
> about it.
> It might even matter for big images...
For C plug-ins that might be true. However, python plug-ins are not
good in dealing directly with pixels - that is, for rendering things.
I guess the python api for creating a layer could create an empty one
with no problems.
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