graphics.arc 绘制弧度过大，导致卡死

[ifengzp]

Expected Behavior

graphics.arc 绘制大弧度的时候，能绘制，或者超出一定的阈值，抛出异常

Current Behavior

绘制 graphics.arc(0, 0, 80, -1.5, -30000, false) 画面卡死

Possible Solution

Steps to Reproduce

Environment

• Eva.js version: v 1.2.7
• Browser & Version: all
• OS & Version: all
• Running Example: url