Re: arc and arcto methods

On 07/29/2015 01:58 AM, Dirk Schulze wrote:
>
>> On Jul 27, 2015, at 10:46 PM, Philippe Le Hegaret <plh@w3.org> wrote:
>>
>> You wrote:
>>> i was thinking of adding some arc drawing methods to a program i'm
>>> writing, and i thought it would be nice to have the same API as the
>>> html canvas methods, so i looked at http://www.w3.org/TR/2dcontext/
>>>
>>> arcTo is defined without parameters that are the point its going to,
>>> and arc is defined with parameters that are the point its going to.
>>>
>>> this is just backward.
>>>
>>> also, i would say for least surprise, have all the ???To methods have
>>> the parameters of the point going too, first.
>>>
>>> and, the definition of arcTo often results in sharp points, if it was
>>> defined to use the 'smoothly joining arc' rather than the 'shortest
>>> arc' more useful output would more often result.
>>
>> Aren't you looking for
>> [[
>>    arcTo(x1, y1, x2, y2, radiusX, radiusY, rotation)
>> ]]
>> http://www.w3.org/TR/2dcontext2/#dom-context-2d-arcto
>>
>> It's not clear to me that it's properly supported yet however
>> https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/arcTo
>>
>> So I don't think we should move it into the first version of the 2d context api unfortunately.
>
> Not sure what you mean.

Look at the page. It doesn't say anything about radiusX/radiusY.

And I wasn't able to find a test for those on web-platform-tests.

Philippe

Received on Wednesday, 29 July 2015 12:37:30 UTC