- From: Brendan Kenny <bckenny@gmail.com>
- Date: Fri, 6 Nov 2009 17:10:48 -0600
- To: "Tab Atkins Jr." <jackalmage@gmail.com>
- Cc: fantasai <fantasai.lists@inkedblade.net>, Brad Kemper <brad.kemper@gmail.com>, Simon Fraser <smfr@me.com>, www-style list <www-style@w3.org>
On Fri, Nov 6, 2009 at 5:06 PM, Tab Atkins Jr. <jackalmage@gmail.com> wrote: > On Fri, Nov 6, 2009 at 2:57 PM, Brendan Kenny <bckenny@gmail.com> wrote: >> I sketched a quick diagram that might help (with apologies for the lengthy url) >> >> http://lh6.ggpht.com/_K6wA3xN79Qs/SvSmsPplRKI/AAAAAAAAAcc/QtG6Jt4I-ys/s800/gradient-angle.png > > If anyone was unclear on exactly what my "starting-point is the point > on the gradient-line where a line drawn perpendicular..." language > meant, there you go. > > (Mind if I steal that image? It may be useful to put into the spec, > since it illustrates *precisely* the language I'm using.) Please do. Let me know if I can make a change or if you want the original illustrator file. > >> Note that this is the default behavior for Illustrator gradients when >> an angle is given but not end points: it assumes you want to >> completely fill the selected shape and that the color stops at 0 and >> 100% should occur at the last pixels possible. That behavior is >> equivalent to Tab's recommendation for the <angle> parameter, as long >> as no background position is specified, and what I think one would >> expect if just an angle was specified (ignoring for now the formula >> for specifying how to select a "starting" corner based on the angle). > > Well, the default corner would be pretty much in all cases what you'd > select with that type of behavior. > >> Incidentally, if you change the Illustrator artboard to have its >> origin in the top left and have y increase downwards, selecting a >> linear gradient with angle 60 degrees puts the 100% colorstop 60 >> degrees clockwise from 0 degrees, exactly as you'd expect if you think >> of the angle as rotating a direction arrow in screen space. For what >> that's worth. > > I'm beginning a survey now, and we'll be expanding it this weekend, to > see what makes the most sense for people. No sense arguing when we > can get hard data. ^_^ So moratorium on discussing angles? > Probably a great idea =]
Received on Friday, 6 November 2009 23:11:22 UTC