Initial Commit

Assets/Imstk/Scripts/Utility/AccumulatingBuffer.cs

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+/*=========================================================================
+
+   Library: iMSTK-Unity
+
+   Copyright (c) Kitware, Inc. 
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0.txt
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+
+=========================================================================*/
+
+namespace ImstkUnity
+{
+    /// <summary>
+    /// Class to maintain a simple ring buffer for accumulating data, the buffer 
+    /// maintains the sum of the data as well for fast average calculation.
+    /// The size can be determined at initialization.
+    /// Used to keep track of timing and performance data outside of the profiler
+    /// </summary>
+    public class AccumulatingBuffer
+    {
+        private float[] _data;
+        private int _length;
+        private int _current = 0;
+        private float _sum = 0;
+
+        public int Length
+        {
+            get { return _length; }
+        }
+
+        public float Average
+        {
+            get { return _sum / _length; }
+        }
+
+        public AccumulatingBuffer(int size)
+        {
+            _data = new float[size];
+            for (int i = 0; i < _length; ++i)
+            {
+                _data[i] = 0;
+            }
+            _length = size;
+        }
+
+        public void Push(float val)
+        {
+            _sum -= _data[_current];
+            _data[_current] = val;
+            _sum += _data[_current];
+            _current = (_current + 1) % _length;
+        }
+    }
+}