Re: arc and arcto methods

> 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. It is implemented in all browsers. IIRC I implemented it in Firefox 7-8 years ago and WebKit has it even longer (as well as Blink which forked later).

Greetings,
Dirk

> 
> Philippe
> 
> 
>

Received on Wednesday, 29 July 2015 05:59:17 UTC