W3C home > Mailing lists > Public > public-css-commits@w3.org > February 2011

csswg/css3-images Overview.html,1.70,1.71 Overview.src.html,1.73,1.74

From: Tab Atkins Jr.. via cvs-syncmail <cvsmail@w3.org>
Date: Wed, 16 Feb 2011 02:20:52 +0000
To: public-css-commits@w3.org
Message-Id: <E1PpX0e-0004F0-GK@lionel-hutz.w3.org>
Update of /sources/public/csswg/css3-images
In directory hutz:/tmp/cvs-serv16274

Modified Files:
	Overview.html Overview.src.html 
Log Message:
Revised the list of issues against gradients, per Brad's feedback.


Index: Overview.html
===================================================================
RCS file: /sources/public/csswg/css3-images/Overview.html,v
retrieving revision 1.70
retrieving revision 1.71
diff -u -d -r1.70 -r1.71
--- Overview.html	15 Feb 2011 21:20:40 -0000	1.70
+++ Overview.html	16 Feb 2011 02:20:50 -0000	1.71
@@ -15,7 +15,7 @@
 
    <h1>CSS Image Values and Replaced Content Module Level 3</h1>
 
-   <h2 class="no-num no-toc" id=longstatus-date>W3C Working Draft 15 February
+   <h2 class="no-num no-toc" id=longstatus-date>W3C Working Draft 16 February
     2011</h2>
 
    <dl>
@@ -23,7 +23,7 @@
     <!-- <dd><a href="http://dev.w3.org/csswg/css3-images/">http://dev.w3.org/csswg/css3-images/</a> -->
 
     <dd><a
-     href="http://www.w3.org/TR/2011/WD-css3-images-20110215/">http://www.w3.org/TR/2011/WD-css3-images-20110215/</a>
+     href="http://www.w3.org/TR/2011/WD-css3-images-20110216/">http://www.w3.org/TR/2011/WD-css3-images-20110216/</a>
 
     <dt>Latest Published Version:
 
@@ -628,15 +628,22 @@
    the size of the background sizing area. If you use a gradient in a
    list-style-image, the "box" will be a 1em square.
 
-  <p class=issue>It has been suggested that repeating gradients aren't
-   necessary, and can instead be achieved by altering the behavior of
-   background-repeat.
-
-  <p class=issue>It has been suggested that we can avoid the center position
-   in radial gradients, and instead use background-position.
+  <p class=issue>It has been suggested that several of the controls offered
+   by gradients are unnecessary. Repeating gradients could potentially be
+   done by hooking into &lsquo;<code
+   class=property>background-repeat</code>&rsquo;, sizing and positioning
+   radial gradients could be done by hooking into &lsquo;<code
+   class=property>background-size</code>&rsquo; and &lsquo;<code
+   class=property>background-position</code>&rsquo;, etc.
 
-  <p class=issue>It has been suggested that we should use some other
-   definition for mapping angles to directions to match other parts of CSS.</p>
+  <p class=issue>Angles in gradients denote directions and match the behavior
+   of polar coordinates, where 0deg is East, 90deg is North, and in general a
+   larger angle corresponds to an angle further CCW. Other CSS properties
+   that use angles to denote rotations use the convention that larger angles
+   are further CW. It has been suggested that gradients be changed so that
+   larger angles are more CW, and 0deg either remain East (matching a polar
+   coordinate system with the Y axis flipped) or changed to North (matching
+   bearings).</p>
   <!-- ====================================================================== -->
 
   <h3 id=linear-gradients><span class=secno>5.1. </span> Linear Gradients</h3>

Index: Overview.src.html
===================================================================
RCS file: /sources/public/csswg/css3-images/Overview.src.html,v
retrieving revision 1.73
retrieving revision 1.74
diff -u -d -r1.73 -r1.74
--- Overview.src.html	15 Feb 2011 21:20:40 -0000	1.73
+++ Overview.src.html	16 Feb 2011 02:20:50 -0000	1.74
@@ -395,14 +395,18 @@
 	area.  If you use a gradient in a list-style-image, the "box" will be a 1em 
 	square.</p>
 
-	<p class=issue>It has been suggested that repeating gradients aren't necessary,
-	and can instead be achieved by altering the behavior of background-repeat.</p>
-
-	<p class=issue>It has been suggested that we can avoid the center position in
-	radial gradients, and instead use background-position.</p>
+	<p class=issue>It has been suggested that several of the controls offered by gradients are
+	unnecessary.  Repeating gradients could potentially be done by hooking into 
+	'background-repeat', sizing and positioning radial gradients could be done by
+	hooking into 'background-size' and 'background-position', etc.</p>
 
-	<p class=issue>It has been suggested that we should use some other definition 
-	for mapping angles to directions to match other parts of CSS.</p>
+	<p class=issue>Angles in gradients denote directions and match the behavior of polar coordinates,
+	where 0deg is East, 90deg is North, and in general a larger angle corresponds
+	to an angle further CCW.  Other CSS properties that use angles to denote rotations
+	use the convention that larger angles are further CW.  It has been suggested
+	that gradients be changed so that larger angles are more CW, and 0deg either
+	remain East (matching a polar coordinate system with the Y axis flipped) or 
+	changed to North (matching bearings).</p>
 
 <!-- ====================================================================== -->
 
Received on Wednesday, 16 February 2011 02:20:53 UTC

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