Currently, there is (almost) no benefit. Building gegl with spiro support allows XML compositions to use spiro curves when input on the gegl command line. I'm not entirely sure that works as I've never used it, and I have a feeling nobody else has used it in a long time.

The spiro curves support used to be part of the old gegl editor, but now that editor is gone.

So, building with spiro won't change gimp at all.

On Sat, Jul 27, 2013 at 6:21 PM, Elle Stone wrote:

What benefits are there from installing the spiro libraries for gegl to use?

According to the spiro website: http://libspiro.sourceforge.net/

Using bzier splines an artist can easily draw curves with the same slope on either side of an on-curve point. Spiros, on the other hand, are based on clothoid splines which make it easy to maintain constant curvature as well as constant slope. Such curves will simply look nicer.

I've never had the spiro libraries installed on my computer. They can be downloaded from sourceforge. What would be the benefits? What part of Gimp would draw nicer curves?

Elle

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