- From: Simon Fraser <smfr@me.com>
- Date: Fri, 11 Jun 2010 10:03:38 -0700
- To: Dirk Schulze <vbs85@gmx.de>
- Cc: public-fx@w3.org
On Jun 11, 2010, at 1:10 AM, Dirk Schulze wrote: > Am 11.06.2010 07:43, schrieb Dirk Schulze: >> Hi, >> >> is it possible to extend rotate(<angle>) in the CSS 2D transforms spec [1] with two optional arguments for the center of the rotation cx and cy to rotate(<angle> [, <number>, <number>])? This would make CSS transforms more compatible with SVGTransforms [2]. >> >> Dirk >> >> [1] http://dev.w3.org/csswg/css3-2d-transforms/#transform-functions >> [2] http://www.w3.org/TR/SVG11/coords.html#TransformAttribute >> > <number> is of course the wrong value here, <translation-value> is better. So the definition for rotate would be: > > rotate(<angle> [, <translation-value>, <translation-value>]) > > if no cx or cy is specified, the rotation is about the origin of the element. Using cx, cy would result in translate(cx, cy) rotate(<angle>) translate(-cx,-cy). It seems pretty arbitrary to just supply an origin for rotation. Why not for scale() and skewX()/skewY()? Also, to be consistent, we'd have to allow a 3-axis origin for rotate3d(), rotateX(), rotateY() and scale3d() as well. Simon
Received on Friday, 11 June 2010 17:04:40 UTC