1 files changed, 256 insertions, 0 deletions
diff --git a/modules/mono/glue/Managed/Files/Rect2.cs b/modules/mono/glue/Managed/Files/Rect2.cs
new file mode 100644
index 0000000000..cb25c267bc
--- /dev/null
+++ b/modules/mono/glue/Managed/Files/Rect2.cs
@@ -0,0 +1,256 @@
+using System;
+using System.Runtime.InteropServices;
+#if REAL_T_IS_DOUBLE
+using real_t = System.Double;
+#else
+using real_t = System.Single;
+#endif
+
+namespace Godot
+{
+    [StructLayout(LayoutKind.Sequential)]
+    public struct Rect2 : IEquatable<Rect2>
+    {
+        private Vector2 _position;
+        private Vector2 _size;
+
+        public Vector2 Position
+        {
+            get { return _position; }
+            set { _position = value; }
+        }
+
+        public Vector2 Size
+        {
+            get { return _size; }
+            set { _size = value; }
+        }
+
+        public Vector2 End
+        {
+            get { return _position + _size; }
+            set { _size = value - _position; }
+        }
+
+        public real_t Area
+        {
+            get { return GetArea(); }
+        }
+
+        public Rect2 Abs()
+        {
+            Vector2 end = End;
+            Vector2 topLeft = new Vector2(Mathf.Min(_position.x, end.x), Mathf.Min(_position.y, end.y));
+            return new Rect2(topLeft, _size.Abs());
+        }
+
+        public Rect2 Clip(Rect2 b)
+        {
+            var newRect = b;
+
+            if (!Intersects(newRect))
+                return new Rect2();
+
+            newRect._position.x = Mathf.Max(b._position.x, _position.x);
+            newRect._position.y = Mathf.Max(b._position.y, _position.y);
+
+            Vector2 bEnd = b._position + b._size;
+            Vector2 end = _position + _size;
+
+            newRect._size.x = Mathf.Min(bEnd.x, end.x) - newRect._position.x;
+            newRect._size.y = Mathf.Min(bEnd.y, end.y) - newRect._position.y;
+
+            return newRect;
+        }
+
+        public bool Encloses(Rect2 b)
+        {
+            return b._position.x >= _position.x && b._position.y >= _position.y &&
+               b._position.x + b._size.x < _position.x + _size.x &&
+               b._position.y + b._size.y < _position.y + _size.y;
+        }
+
+        public Rect2 Expand(Vector2 to)
+        {
+            var expanded = this;
+
+            Vector2 begin = expanded._position;
+            Vector2 end = expanded._position + expanded._size;
+
+            if (to.x < begin.x)
+                begin.x = to.x;
+            if (to.y < begin.y)
+                begin.y = to.y;
+
+            if (to.x > end.x)
+                end.x = to.x;
+            if (to.y > end.y)
+                end.y = to.y;
+
+            expanded._position = begin;
+            expanded._size = end - begin;
+
+            return expanded;
+        }
+
+        public real_t GetArea()
+        {
+            return _size.x * _size.y;
+        }
+
+        public Rect2 Grow(real_t by)
+        {
+            var g = this;
+
+            g._position.x -= by;
+            g._position.y -= by;
+            g._size.x += by * 2;
+            g._size.y += by * 2;
+
+            return g;
+        }
+
+        public Rect2 GrowIndividual(real_t left, real_t top, real_t right, real_t bottom)
+        {
+            var g = this;
+
+            g._position.x -= left;
+            g._position.y -= top;
+            g._size.x += left + right;
+            g._size.y += top + bottom;
+
+            return g;
+        }
+
+        public Rect2 GrowMargin(Margin margin, real_t by)
+        {
+            var g = this;
+
+            g.GrowIndividual(Margin.Left == margin ? by : 0,
+                    Margin.Top == margin ? by : 0,
+                    Margin.Right == margin ? by : 0,
+                    Margin.Bottom == margin ? by : 0);
+
+            return g;
+        }
+
+        public bool HasNoArea()
+        {
+            return _size.x <= 0 || _size.y <= 0;
+        }
+
+        public bool HasPoint(Vector2 point)
+        {
+            if (point.x < _position.x)
+                return false;
+            if (point.y < _position.y)
+                return false;
+
+            if (point.x >= _position.x + _size.x)
+                return false;
+            if (point.y >= _position.y + _size.y)
+                return false;
+
+            return true;
+        }
+
+        public bool Intersects(Rect2 b)
+        {
+            if (_position.x > b._position.x + b._size.x)
+                return false;
+            if (_position.x + _size.x < b._position.x)
+                return false;
+            if (_position.y > b._position.y + b._size.y)
+                return false;
+            if (_position.y + _size.y < b._position.y)
+                return false;
+
+            return true;
+        }
+
+        public Rect2 Merge(Rect2 b)
+        {
+            Rect2 newRect;
+
+            newRect._position.x = Mathf.Min(b._position.x, _position.x);
+            newRect._position.y = Mathf.Min(b._position.y, _position.y);
+
+            newRect._size.x = Mathf.Max(b._position.x + b._size.x, _position.x + _size.x);
+            newRect._size.y = Mathf.Max(b._position.y + b._size.y, _position.y + _size.y);
+
+            newRect._size = newRect._size - newRect._position; // Make relative again
+
+            return newRect;
+        }
+        
+        // Constructors 
+        public Rect2(Vector2 position, Vector2 size)
+        {
+            _position = position;
+            _size = size;
+        }
+        public Rect2(Vector2 position, real_t width, real_t height)
+        {
+            _position = position;
+            _size = new Vector2(width, height);
+        }
+        public Rect2(real_t x, real_t y, Vector2 size)
+        {
+            _position = new Vector2(x, y);
+            _size = size;
+        }
+        public Rect2(real_t x, real_t y, real_t width, real_t height)
+        {
+            _position = new Vector2(x, y);
+            _size = new Vector2(width, height);
+        }
+
+        public static bool operator ==(Rect2 left, Rect2 right)
+        {
+            return left.Equals(right);
+        }
+
+        public static bool operator !=(Rect2 left, Rect2 right)
+        {
+            return !left.Equals(right);
+        }
+
+        public override bool Equals(object obj)
+        {
+            if (obj is Rect2)
+            {
+                return Equals((Rect2)obj);
+            }
+
+            return false;
+        }
+
+        public bool Equals(Rect2 other)
+        {
+            return _position.Equals(other._position) && _size.Equals(other._size);
+        }
+
+        public override int GetHashCode()
+        {
+            return _position.GetHashCode() ^ _size.GetHashCode();
+        }
+
+        public override string ToString()
+        {
+            return String.Format("({0}, {1})", new object[]
+            {
+                _position.ToString(),
+                _size.ToString()
+            });
+        }
+
+        public string ToString(string format)
+        {
+            return String.Format("({0}, {1})", new object[]
+            {
+                _position.ToString(format),
+                _size.ToString(format)
+            });
+        }
+    }
+}