[Ipe-discuss] How to "reverse" the arc, when creating a shape?

Wojciech Zabolotny wzab01 at gmail.com
Sun Aug 23 21:30:29 CEST 2015

2015-08-23 14:45 GMT+02:00 Otfried Cheong <otfried at ipe.airpost.net>:
> On Sun, Aug 23, 2015, at 17:56, Wojciech Zabolotny wrote:
>> Is there any way to generate the arc covering the right range of
>> angles but in reversed direction?
> An arc is always counter-clockwise on its supporting unit circle.  To
> get a clockwise arc, you need to change the matrix so that it mirrors
> this circle.  (E.g. negate the change the first element.)

Thanks, I've modified my source accordingly (see attached kolka9.lua script),
and now the objects are generated correctly.

Thanks, Wojtek
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