very useful aabb function

math/AxisAlignedBox3d.cs

@@ -100,7 +100,6 @@ public Vector3d Center {
             get { return new Vector3d(0.5 * (Min.x + Max.x), 0.5 * (Min.y + Max.y), 0.5 * (Min.z + Max.z)); }
         }
 
-
         public static bool operator ==(AxisAlignedBox3d a, AxisAlignedBox3d b) {
             return a.Min == b.Min && a.Max == b.Max;
         }
@@ -138,6 +137,17 @@ public Vector3d Corner(int i)
             return new Vector3d(x, y, z);
         }
 
+        /// <summary>
+        /// Returns point on face/edge/corner. For each coord value neg==min, 0==center, pos==max
+        /// </summary>
+        public Vector3d Point(int xi, int yi, int zi)
+        {
+            double x = (xi < 0) ? Min.x : ((xi == 0) ? (0.5*(Min.x + Max.x)) : Max.x);
+            double y = (yi < 0) ? Min.y : ((yi == 0) ? (0.5*(Min.y + Max.y)) : Max.y);
+            double z = (zi < 0) ? Min.z : ((zi == 0) ? (0.5*(Min.z + Max.z)) : Max.z);
+            return new Vector3d(x, y, z);
+        }
+
 
         // TODO
         ////! 0 == bottom-left, 1 = bottom-right, 2 == top-right, 3 == top-left

math/AxisAlignedBox3f.cs

@@ -150,6 +150,18 @@ public Vector3f Corner(int i)
         }
 
 
+        /// <summary>
+        /// Returns point on face/edge/corner. For each coord value neg==min, 0==center, pos==max
+        /// </summary>
+        public Vector3f Point(int xi, int yi, int zi)
+        {
+            float x = (xi < 0) ? Min.x : ((xi == 0) ? (0.5f * (Min.x + Max.x)) : Max.x);
+            float y = (yi < 0) ? Min.y : ((yi == 0) ? (0.5f * (Min.y + Max.y)) : Max.y);
+            float z = (zi < 0) ? Min.z : ((zi == 0) ? (0.5f * (Min.z + Max.z)) : Max.z);
+            return new Vector3f(x, y, z);
+        }
+
+
         //! value is subtracted from min and added to max
         public void Expand(float fRadius)
         {