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Dec 7, 2011 at 17:53 comment added Chris Evans I see what you mean now, I got that wrong. x1 = ((self.getCentralX()-width/2) * Math.cos(rotation)) - ((self.getCentralY()-height/2) * Math.sin(rotation)); y1 = ((self.getCentralX()-width/2) * Math.sin(rotation)) + ((self.getCentralY()-height/2) * Math.cos(rotation)); x2 = ((self.getCentralX()+width/2) * Math.cos(rotation)) - ((self.getCentralY()+height/2) * Math.sin(rotation)); y2 = ((self.getCentralX()+width/2) * Math.sin(rotation)) + ((self.getCentralY()+height/2) * Math.cos(rotation)); I've tried that but it also doesn't work. The line disappears as the object rotates.
Dec 7, 2011 at 17:52 history edited sam hocevar CC BY-SA 3.0
deleted 467 characters in body
Dec 7, 2011 at 17:48 comment added Chris Evans I apologise but I didn't mean to have the width/2 in there at all - that was from some playing about trying to get it to work.
Dec 7, 2011 at 17:41 history answered sam hocevar CC BY-SA 3.0