wip

2024-09-28 20:11:56 +03:00
parent 5136f08dab
commit 672bb1ff6d
95 changed files with 741 additions and 601 deletions
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2023-2024 Eduard Kargin <kargin.eduard@gmail.com>
+ *
+ * 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
+ *
+ * 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.
+ */
+
+
+using Ragon.Protocol;
+
+namespace Ragon.Client.Compressor;
+
+public class FloatCompressor
+{
+  public float Min { get; private set; }
+  public float Max { get; private set; }
+  public float Precision { get; private set; }
+  public int RequiredBits { get; private set; }
+  
+  private uint _mask;
+
+  public FloatCompressor(float min = -1024.0f, float max = 1024.0f, float precision = 0.01f)
+  {
+    Min = min;
+    Max = max;
+    Precision = precision;
+    RequiredBits = DeBruijn.Log2((uint)((Max - Min) * (1f / Precision) + 0.5f)) + 1;
+    
+    _mask = (uint)((1L << RequiredBits) - 1);
+  }
+
+  public uint Compress(float value)
+  {
+    return (uint)((value - Min) * 1f / Precision + 0.5f) & _mask;
+  }
+
+  public float Decompress(uint value)
+  {
+    var result = value * Precision + Min;
+
+    if (result < Min)
+      result = Min;
+    else if (result > Max)
+      result = Max;
+
+    return result;
+  }
+}