Add Int3.cpp.

Source/Engine/Core/Math/Int2.cpp

@@ -0,0 +1,51 @@
+// Copyright (c) 2012-2021 Wojciech Figat. All rights reserved.
+
+#include "Int2.h"
+#include "Int3.h"
+#include "Int4.h"
+#include "Vector2.h"
+#include "Vector3.h"
+#include "Vector4.h"
+#include "Engine/Core/Types/String.h"
+
+static_assert(sizeof(Int2) == 8, "Invalid Int2 type size.");
+
+const Int2 Int2::Zero(0);
+const Int2 Int2::One(1);
+const Int2 Int2::Minimum(MIN_int32);
+const Int2 Int2::Maximum(MAX_int32);
+
+Int2::Int2(const Int3& xyz)
+    : X(xyz.X)
+    , Y(xyz.Y)
+{
+}
+
+Int2::Int2(const Int4& xyzw)
+    : X(xyzw.X)
+    , Y(xyzw.Y)
+{
+}
+
+Int2::Int2(const Vector2& xy)
+    : X(static_cast<int32>(xy.X))
+    , Y(static_cast<int32>(xy.Y))
+{
+}
+
+Int2::Int2(const Vector3& xyz)
+    : X(static_cast<int32>(xyz.X))
+    , Y(static_cast<int32>(xyz.Y))
+{
+}
+
+Int2::Int2(const Vector4& xyzw)
+    : X(static_cast<int32>(xyzw.X))
+    , Y(static_cast<int32>(xyzw.Y))
+{
+}
+
+String Int2::ToString() const
+{
+    return String::Format(TEXT("{}"), *this);
+}