From c10e0d92f46e5eaf25a69e1fafe5f4dbd8eaab9d Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Wed, 3 Nov 2021 09:52:26 +0800
Subject: *misc

---
 Runtime/Math/Math.h       |  4 +---
 Runtime/Math/MathHelper.h | 11 +++++++++++
 Runtime/Math/Vector2.h    | 17 +++++++++++++++++
 3 files changed, 29 insertions(+), 3 deletions(-)
 create mode 100644 Runtime/Math/MathHelper.h

(limited to 'Runtime/Math')

diff --git a/Runtime/Math/Math.h b/Runtime/Math/Math.h
index aaeb264..5e08613 100644
--- a/Runtime/Math/Math.h
+++ b/Runtime/Math/Math.h
@@ -6,9 +6,7 @@
 #include "Matrix44.h"
 #include "FloatConversion.h"
 #include "Rect.h"
-
-#define max(a, b)\
-(a)>(b)?(a):(b)
+#include "MathHelper.h"
 
 typedef Internal::Vector2  Vector2;
 typedef Internal::Vector3  Vector3;
diff --git a/Runtime/Math/MathHelper.h b/Runtime/Math/MathHelper.h
new file mode 100644
index 0000000..3f8754a
--- /dev/null
+++ b/Runtime/Math/MathHelper.h
@@ -0,0 +1,11 @@
+#pragma once
+
+#define max(a, b)\
+(a)>(b)?(a):(b)
+
+#define min(a, b)\
+(a)<(b)?(a):(b)
+
+#define clamp(v, lo, hi)\
+max((lo), min((v), (hi)))
+
diff --git a/Runtime/Math/Vector2.h b/Runtime/Math/Vector2.h
index 27cf312..9d7e4e9 100644
--- a/Runtime/Math/Vector2.h
+++ b/Runtime/Math/Vector2.h
@@ -1,4 +1,6 @@
 #pragma once
+#include "MathHelper.h"
+#include "Runtime/Utilities/Assert.h"
 
 namespace Internal
 {
@@ -15,6 +17,21 @@ namespace Internal
             this->y = y;
         }
 
+		Vector2 Clamp(float xmin, float xmax, float ymin, float ymax)
+		{
+			Vector2 v;
+			v.x = clamp(x, xmin, xmax);
+			v.y = clamp(y, ymin, ymax);
+			return v;
+		}
+
+		float operator[](int i)
+		{
+			if (i == 0) return x;
+			else if (i == 1) return y;
+			Assert(false);
+		}
+
         bool operator == (const Vector2& v) const
         {
             return v.x == x && v.y == y;
-- 
cgit v1.1-26-g67d0