[cairo] Shouldn't Cairo use/offer degrees rather than radians?

Guillermo Rodriguez guillerodriguez.dev at gmail.com
Mon Jul 3 15:45:28 UTC 2017

2017-07-03 17:14 GMT+02:00 David Kastrup <dak at gnu.org>:
> Lawrence D'Oliveiro <ldo at geek-central.gen.nz> writes:
>> On Fri, 30 Jun 2017 07:02:36 +0200, David Kastrup wrote:
>>> Lawrence D'Oliveiro <ldo at geek-central.gen.nz> writes:
>>>> You do realize that your claim about Cairo’s “inability to reliably
>>>> draw a half circle that seamlessly connects with another half circle
>>>> under any rasterization” is complete nonsense, right?
>>> Sigh.  If you cannot specify an angle for pi for which sin(angle)==0,
>>> you will have rasterizations of half circle arcs that won't line up
>>> perfectly because you then cannot make the half circles butt up
>>> perfectly, and "too small to be noticeable" becomes a statistic rather
>>> than a static feature under rasterization.
>> There is no such situation.
> What is wrong with this list?

I don't think it is the list as a whole. But I do understand your
frustration at this point.


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