自定义图形xml格式

<element>
	<polygon>
		<line startX="" startY="" endX="" endY="">
		<line/>
		<line startX="" startY="" endX="" endY="">
		<line/>
		<circularArc radiusX="" radiusY="" startAngle="" endAngle="">
		<circularArc/>
		<circularArcPoint startX="" startY="" endX="" endY="" middleX="" middleY="">
		<circularArcPoint/>
	<polygon/>
	<circle radiusX="" radiusY="" radius="">
	<circle/>
	<circleBoundry radiusX="" radiusY="" radius="">
	<circleBoundry>
	<polyline>
		<line startX="" startY="" endX="" endY="">
		<line/>
		<circularArc radiusX="" radiusY="" startAngle="" endAngle="">
		<circularArc/>
		<circularArcPoint startX="" startY="" endX="" endY="" middleX="" middleY="">
		<circularArcPoint/>
	<polyline/>
<element/>

polygon:定义多边形

line:定义直线

circularArc:定义圆弧

circle:圆面

circleBoundry:圆圈

polyLine:多边线