- From: Dean Jackson <dino@apple.com>
- Date: Fri, 6 Nov 2009 09:55:04 +1100
- To: Brad Kemper <brad.kemper@gmail.com>
- Cc: Simon Fraser <smfr@me.com>, "Tab Atkins Jr." <jackalmage@gmail.com>, www-style list <www-style@w3.org>
On 06/11/2009, at 9:42 AM, Brad Kemper wrote: > > > On Nov 5, 2009, at 2:15 PM, Dean Jackson <dino@apple.com> wrote: > >> also would resist the temptation to change the direction of >> rotation for angles, just because it seems more familiar to some >> people. The Web has a standard convention that we should follow. > > "The Web"? Yes, where the X-axis points left and the Y-axis points down, and positive 90deg being the angle taken from the X-axis to the Y-axis (ie. clockwise). This is something SVG had to accept, after years of fighting (I was on the Y-up side). > I showed a couple examples on the Web where linear directions were > specified as angles that were measured by rotating the line > counterclockwise the number of degrees from zero, which pointed to > the right. The CSS units module does not specify a default rotation > direction for angles. Sorry, I've looked through your emails on this thread and I can't find the examples on the Web you mention. I see your examples of documents on the Web, but that's different from deployed Web technologies. > Is Tranforms the only other module using angles right now? SVG - http://www.w3.org/TR/SVG/coords.html It doesn't use the CSS module, but CSS transforms was designed to be compatible. Dean
Received on Thursday, 5 November 2009 22:55:40 UTC