# PathProxy 类

# 概述

# 构造函数

# _saveData

# data

# _ctx

渲染上下文

# 字段

# _xi

# _yi

# _x0

# _y0

# _ux

# _uy

# _len

# _lineDash

# _dashOffset

# _dashIdx

# _dashSum

# 方法

# setScale

# getContext

# beginPath

# moveTo

# lineTo

# bezierCurveTo

# quadraticCurveTo

# arc

# arcTo

# rect

# closePath

# fill

# stroke

# setLineDash

# setLineDashOffset

# len

# setData

# appendPath

# addData

# _expandData

# _needsDash

# _dashedLineTo

# _dashedBezierTo

# _dashedQuadraticTo

# toStatic

# getBoundingRect

# rebuildPath

# 命令映射