From: Dr. Olaf Hoffmann <Dr.O.Hoffmann@gmx.de>

Date: Tue, 8 Dec 2009 12:48:55 +0200

To: www-style@w3.org

Message-Id: <200912081148.55645.Dr.O.Hoffmann@gmx.de>

Received on Tuesday, 8 December 2009 10:51:12 UTC

Date: Tue, 8 Dec 2009 12:48:55 +0200

To: www-style@w3.org

Message-Id: <200912081148.55645.Dr.O.Hoffmann@gmx.de>

Hello www-style, due to the previous discussion of skew(<angle> [, <angle>]) it turned out, that skew(<angle> [, <angle>]) is currently undefined and what was reported to be implemented is not related to skewing and meaningless. Therefore I would like to propose to define it as follows: skew(s,a) = rotate(a) skewX(s) rotate(-a). If a is not provided a=0 is assumed. What it means: To skew in an arbitrary direction one can for example rotate the skew direction into the x-direction, followed by a skewX and followed by a rotation in the opposite direction again. If the skew angle is s and the angle from the x-direction to the skew direction a, then the corresponding transformation is rotate(a) skewX(s) rotate(-a). The attached graphics correspond to examples with s of 40 degree. The filled samples on the left correspond to an rotation of 90 degree. Note, that for 90 degree this corresponds to skewY(-s). The stroked samples provide several skewing directions with a difference angle of 45 degree. Olaf

(image/svg+xml attachment: SVG12skew01.svg)

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