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Re: About arc command

From: 向雅 <fyaoxy@gmail.com>
Date: Fri, 11 May 2012 11:24:09 +0800
Message-ID: <CAJH9WWShaE7H+q-X6dEuizAss=MCswScSyG6sG=QRtaaLQQLPw@mail.gmail.com>
To: Dirk Schulze <dschulze@adobe.com>
Cc: David Dailey <ddailey@zoominternet.net>, "www-svg@w3.org" <www-svg@w3.org>
Dear D2:) David and Dirk
Thank you very much for the links. It will help for my design.

Indeed, I think I just full completed the arc command after the before
message send.
Though my original intention is, hope the editor correct the document
to not misguide others.

To Editors: can you do some kind of correcting?

BTW, you both at Australia?

致敬//Regards If you intrest, listen this pronounce:
http://www.zdic.net/cd/ci/10/ZdicE8Zdic87ZdicB4188249.htm
向雅
Qinxian


2012/5/11 Dirk Schulze <dschulze@adobe.com>:
> I also like the description on MDN with good examples:
>
> https://developer.mozilla.org/en/SVG/Tutorial/Paths
>
> Greetings,
> Dirk
>
> On May 11, 2012, at 3:14 AM, David Dailey wrote:
>
>> To be honest, I usually end up trying all four values of the arc-flag and sweep-flag before I remember how they're suppose to work.
>>
>> Perhaps the example at http://www.w3.org/Graphics/SVG/IG/resources/svgprimer.html#path_A might help.
>>
>> Cheers
>> David
>>
>> -----Original Message-----
>> From: saintofqin@gmail.com [mailto:saintofqin@gmail.com] On Behalf Of ??
>> Sent: Thursday, May 10, 2012 8:49 PM
>> To: www-svg@w3.org
>> Subject: About arc command
>>
>> Hi,
>> I'm doing a svg style implementation.
>> arcing. check out the document, seems some words not so right:) 1, sweep flag:
>> I checkout wiki, there is no "positive-angle" speaking. as programmer, I can get,  it just step or delta value >0.
>> but other users maybe get it better, if other common word used, f.e, counter(anti)-clockwise, or left(right) handle law.
>> IMO, even "ccw" better than sweep.
>> 2, implnote F.6.5, step4, eval the included angle, the acos result range from 0-PI, but document stats:
>> where θ1 is fixed in the range −360° < Δθ < 360° Indeed, it misguide me.
>> Though not use math thing long years, I get back ever feeling at math by bad reviewing the lessons, and send this message.
>>
>> BTW I hope my english speaking got.
>> If have some problem, I can send message again with more syntaxed thing.
>>
>> Regards
>> Qinxian
>>
>>
>>
>>
>>
>
Received on Friday, 11 May 2012 03:24:59 GMT

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