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https://gitee.com/jisol/jisol-game/
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DESKTOP-5RP3AKU\Jisol
307
JNFrame2/Assets/HotScripts/JNGame/Editor/EditorCreateLUT.cs
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307
JNFrame2/Assets/HotScripts/JNGame/Editor/EditorCreateLUT.cs
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/*
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* @FileName: EditorCreateLUT.cs
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* @Date: 2024-04-20 20:06:14
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* @LastEditTime: 2024-04-22 22:15:46
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* @Description: 生成三角函数速查表代码
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*/
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#if UNITY_EDITOR
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using System;
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using System.IO;
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using System.Text;
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using UnityEditor;
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using UnityEngine;
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namespace JNGame.Math
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{
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/// <summary>
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/// 编辑模式下生成三角函数速查表代码
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/// </summary>
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public static class EditorCreateLUT
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{
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#region Unit Test
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//[MenuItem("LockstepEngine/Math/TestAllLut")]
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private static void TestAllLut()
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{
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TestSqrt(10000);
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TestSqrt(65535);
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TestSqrt(65536);
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TestSqrt(0xffffffff);
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TestSqrt(1000002L * 1000001L);
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TestLutATan();
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TestATan2();
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TestLutASin();
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TestLutACos();
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TestLutSin();
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TestLutCos();
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}
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private static void TestSqrt(ulong t)
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{
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var val = LMath.Sqrt(t);
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UnityEngine.Debug.Log($"sqrt({t}) = {val}");
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return;
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}
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//[MenuItem("LockstepEngine/Math/TestLutATan")]
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private static void TestLutATan()
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{
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TestLut((i) => i, (i) => Mathf.Atan(i), (i) => LMath.Atan(i.ToLFloat()));
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}
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private static void TestLutASin()
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{
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TestLut((i) => i * 0.001f, (p) => Mathf.Asin(p), (p) => LMath.Asin(p.ToLFloat()));
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}
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private static void TestLutACos()
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{
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TestLut((i) => i * 0.001f, (p) => Mathf.Acos(p), (p) => LMath.Acos(p.ToLFloat()));
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}
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private static void TestLutSin()
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{
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TestLut((i) => i * 0.001f * Mathf.PI * 2 - Mathf.PI, (p) => Mathf.Sin(p), (p) => LMath.Sin(p.ToLFloat()));
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}
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private static void TestLutCos()
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{
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TestLut((i) => i * 0.001f * Mathf.PI * 2 - Mathf.PI, (p) => Mathf.Cos(p), (p) => LMath.Cos(p.ToLFloat()));
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}
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private static void TestLut(Func<int, float> funcPar, Func<float, float> rawFunc, Func<float, LFloat> lFunc)
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{
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StringBuilder sb = new StringBuilder();
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int testSize1 = 1000;
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for (int i = 1; i < testSize1; i++)
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{
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var par = funcPar(i);
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var rawVal = rawFunc(par);
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var myVal = lFunc(par).ToFloat();
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var diff = rawVal - myVal;
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if (diff > 0.01f)
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{
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sb.AppendLine($"i:{i} diff:{diff}");
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}
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}
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UnityEngine.Debug.Log(sb.ToString());
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}
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//[MenuItem("LockstepEngine/Math/TestATan2")]
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private static void TestATan2()
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{
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StringBuilder sb = new StringBuilder();
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var v1 = Mathf.Atan2(1, 1);
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var v2 = Mathf.Atan2(1, -1);
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var v3 = Mathf.Atan2(-1, -1);
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var v4 = Mathf.Atan2(-1, 1);
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int testSize = 100;
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for (int y = -testSize; y < testSize; y++)
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{
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for (int x = -testSize; x < testSize; x++)
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{
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var rawVal = Mathf.Atan2(y, x);
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var myVal = LMath.Atan2(y, x); // new LFloat(true, LMath._Atan2(y, x)).ToFloat();
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var diff = rawVal - myVal;
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if (diff > 0.01f)
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{
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sb.AppendLine($"y:{y} x:{x} diff:{diff}");
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}
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}
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}
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UnityEngine.Debug.Log(sb.ToString());
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}
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#endregion
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#region Code Generator
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/// <summary>
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/// 代码生成路径
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/// </summary>
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private static readonly string s_LUTDir = Application.dataPath + "/HotScripts/JNGame/Root/Math/LUT/";
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/// <summary>
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/// 生成三角函数速查表代码文件
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/// </summary>
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[MenuItem("LockstepEngine/Math/CreateAllLUT")]
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static void CreateAllLUT()
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{
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CreateLutAtan2();
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CreateLUTASinCos();
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}
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private static readonly string s_FilePrefixStr = @"
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//#define DONT_USE_GENERATE_CODE
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//------------------------------------------------------------------------------
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// <auto-generated>
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// This code was generated by JNGame.CodeGenerator
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// Changes to this file may cause incorrect behavior and will be lost if
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// the code is regenerated.
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// </auto-generated>
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//------------------------------------------------------------------------------
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";
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private static void CreateLutAtan2()
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{
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var fileName = s_LUTDir + "LUTAtan2.cs";
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string content = @"
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using System;
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using JNGame.Math;
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namespace JNGame.Math
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{
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public static class LUTAtan2
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{
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public const int MaxQueryIdx = $MAX_QUERY_IDX;//Abs(y/x)from 1 to MaxQueryIdx
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public static int[] _startIdx;
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public static int[] _arySize;
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public static int[] _tblTbl;
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static LUTAtan2()
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{
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_startIdx = new int[MaxQueryIdx +1]{
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$START_IDX
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};
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_arySize = new int[MaxQueryIdx +1]{
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$ARY_SIZE
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};
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_tblTbl = new int[]{
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$ALL_VALUES
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};
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}
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}
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}";
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const int MaxQueryIdx = 1000;
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const int interval = 1000;
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// UnityEngine.Debug.LogError("tan Pi/4 = " + Mathf.Tan(Mathf.PI / 4));
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// UnityEngine.Debug.LogError("atan 1 = " + Mathf.Atan(1) * Mathf.Rad2Deg);
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StringBuilder ssb = new StringBuilder();
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StringBuilder aryLne = new StringBuilder();
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int sum = 0;
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StringBuilder tblSb = new StringBuilder();
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StringBuilder startSb = new StringBuilder();
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StringBuilder arySizeSb = new StringBuilder();
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string sprefix = "\t\t\t\t";
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tblSb.Append(sprefix);
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startSb.Append(sprefix);
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arySizeSb.Append(sprefix);
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for (int i = 0; i < MaxQueryIdx; i++)
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{
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var val = Mathf.Atan(i + 1) * Mathf.Rad2Deg;
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var val2 = Mathf.Atan(i + 2) * Mathf.Rad2Deg;
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var arryLen = (int)((val2 - val) * interval);
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if (arryLen == 0)
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{
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arryLen = 1;
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}
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startSb.Append(sum + ", ");
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arySizeSb.Append(arryLen + ", ");
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for (int j = 0; j < arryLen; j++)
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{
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var rad = Mathf.Atan(i + 1 + (j * 1.0f / arryLen));
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tblSb.Append((int)(rad * LFloat.Precision) + ", ");
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sum++;
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if (sum % 100 == 0)
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{
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tblSb.AppendLine();
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tblSb.Append(sprefix);
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}
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}
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if (i % 100 == 99)
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{
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startSb.AppendLine();
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arySizeSb.AppendLine();
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startSb.Append(sprefix);
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arySizeSb.Append(sprefix);
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}
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}
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startSb.Append("" + (sum + 1));
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arySizeSb.Append("" + 1);
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tblSb.Append("" + (int)(Mathf.PI / 4 * LFloat.Precision));
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content = content
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.Replace("$MAX_QUERY_IDX", MaxQueryIdx.ToString())
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.Replace("$START_IDX", startSb.ToString())
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.Replace("$ARY_SIZE", arySizeSb.ToString())
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.Replace("$ALL_VALUES", tblSb.ToString());
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//save to files
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File.WriteAllText(fileName, s_FilePrefixStr + content);
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AssetDatabase.Refresh();
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return;
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}
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private static void CreateLUTASinCos()
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{
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int ACount = 4000;
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CreateLUTA("LUTAsin", ACount, (i) =>
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Mathf.Asin(Mathf.Clamp(-1.0f + i * 2.0f / ACount, -1f, 1f))
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);
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CreateLUTA("LUTAcos", ACount, (i) =>
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Mathf.Acos(Mathf.Clamp(-1.0f + i * 2.0f / ACount, -1f, 1f))
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);
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int CCount = 7200;
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CreateLUTA("LUTCos", CCount, (i) =>
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Mathf.Cos(i * Mathf.PI * 2 / CCount)
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);
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CreateLUTA("LUTSin", CCount, (i) =>
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Mathf.Sin(i * Mathf.PI * 2 / CCount)
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);
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}
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private static void CreateLUTA(string clsName, int nLutAryCount, Func<int, float> itemCallBack)
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{
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var fileName = s_LUTDir + clsName + ".cs";
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string content = @"using System;
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using JNGame.Math;
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namespace JNGame.Math
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{
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public static class $CLS_NAME
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{
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public static readonly int COUNT;
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public static readonly int HALF_COUNT;
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public static readonly int[] table;
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static $CLS_NAME()
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{
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COUNT = $COUNT_VAL;
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HALF_COUNT = COUNT >> 1;
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table = new int[]
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{
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$ALL_VALUES
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};
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}
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}
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}";
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StringBuilder sb = new StringBuilder();
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string prefix = "\t\t\t\t";
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sb.Append(prefix);
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for (int i = 0; i <= nLutAryCount; i++)
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{
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int val = (int)(itemCallBack(i) * LFloat.Precision);
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sb.Append(val.ToString() + ",");
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if (i % 100 == 99)
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{
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sb.AppendLine();
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sb.Append(prefix);
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}
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}
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content = content
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.Replace("$CLS_NAME", clsName.ToString())
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.Replace("$COUNT_VAL", nLutAryCount.ToString())
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.Replace("$ALL_VALUES", sb.ToString());
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//save to files
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File.WriteAllText(fileName, s_FilePrefixStr + content);
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AssetDatabase.Refresh();
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}
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#endregion
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}
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}
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#endif
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@@ -0,0 +1,3 @@
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fileFormatVersion: 2
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guid: 5eb54a96f1904df2a6494a7d56f65aa5
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timeCreated: 1732460759
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