From 079d0a0bbbca7471817ec3151efe01d3b6799bee Mon Sep 17 00:00:00 2001
From: Nomango <569629550@qq.com>
Date: Fri, 1 Jun 2018 15:46:55 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0Point::distance=E5=87=BD?=
 =?UTF-8?q?=E6=95=B0=E6=B1=82=E4=B8=A4=E7=82=B9=E9=97=B4=E8=B7=9D=E7=A6=BB?=
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---
 core/Common/Point.cpp | 9 +++++++++
 core/e2dcommon.h      | 3 +++
 2 files changed, 12 insertions(+)

diff --git a/core/Common/Point.cpp b/core/Common/Point.cpp
index c22cd854..15920994 100644
--- a/core/Common/Point.cpp
+++ b/core/Common/Point.cpp
@@ -1,4 +1,5 @@
 #include "..\e2dcommon.h"
+#include <cmath>
 
 
 e2d::Point::Point()
@@ -44,6 +45,14 @@ e2d::Point::operator e2d::Size() const
 	return Size(x, y);
 }
 
+double e2d::Point::distance(const Point &p1, const Point &p2)
+{
+	return sqrt(
+		(p1.x - p2.x) * (p1.x - p2.x) + 
+		(p1.y - p2.y) * (p1.y - p2.y)
+	);
+}
+
 e2d::Point e2d::Point::operator-() const
 {
 	return Point(-x, -y);
diff --git a/core/e2dcommon.h b/core/e2dcommon.h
index 900c679f..e5cf4ecc 100644
--- a/core/e2dcommon.h
+++ b/core/e2dcommon.h
@@ -48,6 +48,9 @@ public:
 	bool operator== (const Point& point) const;
 
 	operator e2d::Size() const;
+
+	// ÅжÏÁ½µã¼ä¾àÀë
+	static double distance(const Point&, const Point&);
 };