Support for non-fulltile airblockers rotating

Content.Shared/Atmos/AtmosDirection.cs

@@ -77,6 +77,49 @@ namespace Content.Shared.Atmos
             };
         }
 
+        /// <summary>
+        /// Converts a direction to an angle, where angle is -PI to +PI.
+        /// </summary>
+        /// <param name="direction"></param>
+        /// <returns></returns>
+        public static Angle ToAngle(this AtmosDirection direction)
+        {
+            return direction switch
+            {
+                AtmosDirection.East => Angle.FromDegrees(0),
+                AtmosDirection.North => Angle.FromDegrees(90),
+                AtmosDirection.West => Angle.FromDegrees(180),
+                AtmosDirection.South => Angle.FromDegrees(270),
+
+                AtmosDirection.NorthEast => Angle.FromDegrees(45),
+                AtmosDirection.NorthWest => Angle.FromDegrees(135),
+                AtmosDirection.SouthWest => Angle.FromDegrees(225),
+                AtmosDirection.SouthEast => Angle.FromDegrees(315),
+
+                _ => throw new ArgumentOutOfRangeException(nameof(direction)),
+            };
+        }
+
+        /// <summary>
+        /// Converts an angle to a cardinal AtmosDirection
+        /// </summary>
+        /// <param name="angle"></param>
+        /// <returns></returns>
+        public static AtmosDirection ToAtmosDirectionCardinal(this Angle angle)
+        {
+            return angle.GetCardinalDir().ToAtmosDirection();
+        }
+
+        /// <summary>
+        /// Converts an angle to an AtmosDirection
+        /// </summary>
+        /// <param name="angle"></param>
+        /// <returns></returns>
+        public static AtmosDirection ToAtmosDirection(this Angle angle)
+        {
+            return angle.GetDir().ToAtmosDirection();
+        }
+
         public static int ToIndex(this AtmosDirection direction)
         {
             // This will throw if you pass an invalid direction. Not this method's fault, but yours!