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Vector Graphics Library for Common Lisp

Can anyone suggest a good library for vector graphics?
Several libraries support drawing shapes, I need a library that can save in vector format.

edit I must admit that before publication I did not do enough googling.

cl vectors seem to be supported, extended, and documented.
vecto seems to support a fairly advanced and fairly documented interface for it

However, I'm used to the fact that the cl libraries are not what they seem, so if anyone has personal experience, share

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I have very positive experience with vecto, but I used it to create PNG files (various graphics). It is quite easy to use and user friendly. But, as far as I know, it cannot be saved in any vector format.

If you want to write to any vector format, CL-SVG is probably the only sensible choice, but I did not try.

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Besides CL-SVG, CL-PDF seems to be another option.

EDIT: another recommendation

I studied this question more, since I myself am interested in this, and found one library that supports both saving files (PS, PDF, SVG, and PNG) and drawing on the screen (GTK2 and X11): cl-cairo2 . This seems to be the best choice if you need both and are not yet tied to another window library.

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