- From: Ian Hickson <ian@hixie.ch>
- Date: Wed, 2 Mar 2011 00:23:44 +0000 (UTC)
On Thu, 2 Dec 2010, Andrea Canciani wrote: > > What will be the current point after an arc with endAngle-startAngle > > 2pi? > > The specification seems to say that the end point is defined to be the > point at endAngle, but the path is required to be exactly a circle. The path is a circle but the end point is unaffected by this; it is defined as being endAngle aleng the circle's circumference, measured in radians clockwise from the positive x-axis. So for example: c.beginPath(); c.moveTo(20,20); c.arc(200, 200, 100, 0, 5*Math.PI, false); c.lineTo(380,380); c.stroke(); ...draws a line from the top left, diagonally down to the right edge of a circle, and then draws a line from the left edge of that circle diagonally down to the bottom right. HTH, -- Ian Hickson U+1047E )\._.,--....,'``. fL http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,. Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
Received on Tuesday, 1 March 2011 16:23:44 UTC