context.beginPath()
context.moveTo(startX,startY)
context.lineTo(endX,endY)
context.arc(centerX, centerY, radius, startingRadianAngle, endingRadianAngle)
context.quadraticCurveTo(controlX,controlY,endX,endY)
context.bezierCurveTo(controlX1,controlY1,controlX2,controlY2,endX,endY)
context.ar...