Merge pull request #923 from mrvux/mathutils

* [Mathematics] Add per component absolute value for vector3
* [Maths] Add per component absolute value for vector2

* [Maths] Add properties for bounding box (size + center)

* Simplify bounding box

Author: xoofx

Source/SharpDX.Mathematics/BoundingBox.cs

@@ -77,6 +77,46 @@ public BoundingBox(Vector3 minimum, Vector3 maximum)
             this.Maximum = maximum;
         }
 
+        /// <summary>
+        /// Returns the width of the bounding box
+        /// </summary>
+        public float Width
+        {
+            get { return this.Maximum.X - this.Minimum.X; }
+        }
+
+        /// <summary>
+        /// Returns the height of the bounding box
+        /// </summary>
+        public float Height
+        {
+            get { return this.Maximum.Y - this.Minimum.Y; }
+        }
+
+        /// <summary>
+        /// Returns the height of the bounding box
+        /// </summary>
+        public float Depth
+        {
+            get { return this.Maximum.Z - this.Minimum.Z; }
+        }
+
+        /// <summary>
+        /// Returns the size of the bounding box
+        /// </summary>
+        public Vector3 Size
+        {
+            get { return this.Maximum - this.Minimum; }
+        }
+
+        /// <summary>
+        /// Returns the size of the bounding box
+        /// </summary>
+        public Vector3 Center
+        {
+            get { return (this.Maximum + this.Minimum) * 0.5f; }
+        }
+
         /// <summary>
         /// Retrieves the eight corners of the bounding box.
         /// </summary>

Source/SharpDX.Mathematics/Vector2.cs

@@ -444,6 +444,29 @@ public static Vector2 Negate(Vector2 value)
             return new Vector2(-value.X, -value.Y);
         }
 
+        /// <summary>
+        /// Returns per component absolute value of a vector
+        /// </summary>
+        /// <param name="value">Input vector</param>
+        /// <param name="result">When the method completes, contains a vector with each component being the absolute value of the input component</param>
+        public static void Abs(ref Vector2 value, out Vector2 result)
+        {
+            result = new Vector2(value.X > 0.0f ? value.X : -value.X,
+                value.Y > 0.0f ? value.Y : -value.Y);
+        }
+
+        /// <summary>
+        /// Returns per component absolute value of a vector
+        /// </summary>
+        /// <param name="value">Input vector</param>
+        /// <returns>A vector with each component being the absolute value of the input component</returns>
+        public static Vector2 Abs(Vector2 value)
+        {
+            return new Vector2(
+                value.X > 0.0f ? value.X : -value.X,
+                value.Y > 0.0f ? value.Y : -value.Y);
+        }
+
         /// <summary>
         /// Returns a <see cref="Vector2"/> containing the 2D Cartesian coordinates of a point specified in Barycentric coordinates relative to a 2D triangle.
         /// </summary>

Source/SharpDX.Mathematics/Vector3.cs

@@ -513,6 +513,31 @@ public static Vector3 Negate(Vector3 value)
             return new Vector3(-value.X, -value.Y, -value.Z);
         }
 
+        /// <summary>
+        /// Returns per component absolute value of a vector
+        /// </summary>
+        /// <param name="value">Input vector</param>
+        /// <param name="result">When the method completes, contains a vector with each component being the absolute value of the input component</param>
+        public static void Abs(ref Vector3 value, out Vector3 result)
+        {
+            result = new Vector3(value.X > 0.0f ? value.X : -value.X,
+                value.Y > 0.0f ? value.Y : -value.Y,
+                value.Z > 0.0f ? value.Z : -value.Z);
+        }
+
+        /// <summary>
+        /// Returns per component absolute value of a vector
+        /// </summary>
+        /// <param name="value">Input vector</param>
+        /// <returns>A vector with each component being the absolute value of the input component</returns>
+        public static Vector3 Abs(Vector3 value)
+        {
+            return new Vector3(
+                value.X > 0.0f ? value.X : -value.X,
+                value.Y > 0.0f ? value.Y : -value.Y,
+                value.Z > 0.0f ? value.Z : -value.Z);
+        }
+
         /// <summary>
         /// Returns a <see cref="Vector3"/> containing the 3D Cartesian coordinates of a point specified in Barycentric coordinates relative to a 3D triangle.
         /// </summary>