From 1d06a1f1f072c7366daaab49379e4f38b249453e Mon Sep 17 00:00:00 2001
From: jiaming <743192023@qq.com>
Date: Wed, 12 Dec 2018 18:47:47 +0800
Subject: [PATCH] add get circle radian point fun

---
 src/plugins/canvasExtend.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/plugins/canvasExtend.js b/src/plugins/canvasExtend.js
index 15ec7a7..86be556 100644
--- a/src/plugins/canvasExtend.js
+++ b/src/plugins/canvasExtend.js
@@ -140,6 +140,12 @@ export function getLinearGradientColor (ctx, begin, end, color) {
   return linearGradientColor
 }
 
+export function getCircleRadianPoint (x, y, radius, radian) {
+  const { sin, cos } = Math
+
+  return [x + cos(radian) * radius, y + sin(radian) * radius]
+}
+
 const canvas = {
   drawLine,
   drawPolylinePath,
@@ -149,7 +155,8 @@ const canvas = {
   drawSmoothline,
   drawBezierCurveLinePath,
   drawPoints,
-  getLinearGradientColor
+  getLinearGradientColor,
+  getCircleRadianPoint
 }
 
 export default function (Vue) {