From f6d7dbd2ac6938526b1023d1bc571d562b4625cf Mon Sep 17 00:00:00 2001
From: wangzhengquan <wangzhengquan85@126.com>
Date: 星期四, 17 九月 2020 15:16:51 +0800
Subject: [PATCH] minditance

---
 algorithm/include/graph.h |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/algorithm/include/graph.h b/algorithm/include/graph.h
index 4d35724..9c5682b 100644
--- a/algorithm/include/graph.h
+++ b/algorithm/include/graph.h
@@ -2,6 +2,7 @@
 #define __USG_GRAPH_H__
 
 #include "usg_common.h"
+#include <cmath>
 
 struct Point { 
 //public:
@@ -62,4 +63,10 @@
     return {b.x - a.x, b.y - a.y};
 }
 
+static inline double getVecor2Len(Vector2& v) {
+    return sqrt(v.x * v.x + v.y * v.y);
+}
+
+
+
 #endif

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