29786 2016-08-22 20:16:27 +0000 " If x and y should both be zero, the angle is s..." 2018-04-15 17:44:06 +0000 1 1 1 Unclassified FXTF Geometry unspecified All All RESOLVED MOVED P2 enhancement --- 1 peter.hall zcorpan dschulze mike sideshowbarker+geometry oldest_to_newest 127200 0 peter.hall 2016-08-22 20:16:27 +0000 https://drafts.fxtf.org/geometry-1/#dom-dommatrix-rotatefromvectorself In the definition of rotateFromVectorSelf(x, y): [[ If x and y should both be zero, the angle is specified as zero. ]] This can be slightly improved to: > If y is equal to zero and x is greater than or equal to zero, the angle is specified as zero. The reason being that if y is zero and x is positive then there is no rotation. If x is negative then the angle is pi. 129146 1 dschulze 2018-04-15 17:44:06 +0000 https://github.com/w3c/fxtf-drafts/issues/274