Initial commit.

There's a lot of code at play here, so I haven't tested it yet.
A good chunk of the components are available though.

DataTypes/Ray.cs

@@ -0,0 +1,47 @@
+namespace Roblox.DataTypes
+{
+    public struct Ray
+    {
+        public readonly Vector3 Origin;
+        public readonly Vector3 Direction;
+
+        public Ray Unit
+        {
+            get
+            {
+                Ray unit;
+
+                if (Direction.Magnitude == 1.0f)
+                    unit = this;
+                else
+                    unit = new Ray(Origin, Direction.Unit);
+
+                return unit;
+            }
+        }
+
+        public Ray(Vector3 origin, Vector3 direction)
+        {
+            Origin = origin;
+            Direction = direction;
+        }
+
+        public override string ToString()
+        {
+            return '{' + Origin + "}, {" + Direction + '}';
+        }
+
+        public Vector3 ClosestPoint(Vector3 point)
+        {
+            Vector3 offset = point - Origin;
+            float diff = offset.Dot(Direction) / Direction.Dot(Direction);
+            return Origin + (diff * Direction);
+        }
+
+        public float Distance(Vector3 point)
+        {
+            Vector3 projected = ClosestPoint(point);
+            return (point - projected).Magnitude;
+        }
+    }
+}