Positive rotationAngle should be clockwise, not counter-clockwise.
This makes Touch Events consistent with SVG and CSS. For discussion, see:
http://www.w3.org/mid/4D9603B4.80103@mozilla.com
--- a/touchevents.html Fri Apr 01 06:58:49 2011 -0700
+++ b/touchevents.html Fri Apr 01 09:58:21 2011 -0700
@@ -164,7 +164,7 @@
<dt>readonly attribute float rotationAngle</dt>
<dd>
- the angle (in degrees) that the ellipse described by <a>radiusX</a> and <a>radiusY</a> is rotated counter-clockwise about its center. The value must be in the range <code>[0, 90)</code>. If the ellipse described by <a>radiusX</a> and <a>radiusY</a> is circular, then <a>rotationAngle</a> must be <code>0</code>.
+ the angle (in degrees) that the ellipse described by <a>radiusX</a> and <a>radiusY</a> is rotated clockwise about its center. The value must be in the range <code>[0, 90)</code>. If the ellipse described by <a>radiusX</a> and <a>radiusY</a> is circular, then <a>rotationAngle</a> must be <code>0</code>.
</dd>
<dt>readonly attribute float force</dt>