VLEXAMPLE - MOUSE 4 vlex="cx:{$cX};cy:{$cY};stroke-dasharray:{$l = PI*200*2};stroke-dashoffset:{$l-$l*$mX/$x}" - the gray arc stroke should flow arround a 200px circle centered on stage - the mouse x-position should determin its angle 
                VLEXAMPLE - MOUSE 4

                vlex="cx:{$cX};cy:{$cY};stroke-dasharray:{$l = PI*200*2};stroke-dashoffset:{$l-$l*$mX/$x}"

                - the gray arc stroke should flow arround a 200px circle centered on stage
                - the mouse x-position should determin its angle