feat: Initial commit

2025-02-14 16:06:00 +08:00
commit da75a84e02
1056 changed files with 163517 additions and 0 deletions
--- a/Assets/Plugins/Poly2Tri/Utility/MathUtil.cs
+++ b/Assets/Plugins/Poly2Tri/Utility/MathUtil.cs
@@ -0,0 +1,91 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace Poly2Tri
+{
+    public class MathUtil
+    {
+        public static double EPSILON = 1e-12;
+
+
+        public static bool AreValuesEqual(double val1, double val2)
+        {
+            return AreValuesEqual(val1, val2, EPSILON);
+        }
+
+
+        public static bool AreValuesEqual(double val1, double val2, double tolerance)
+        {
+            if (val1 >= (val2 - tolerance) && val1 <= (val2 + tolerance))
+            {
+                return true;
+            }
+
+            return false;
+        }
+
+
+        public static bool IsValueBetween(double val, double min, double max, double tolerance)
+        {
+            if (min > max)
+            {
+                double tmp = min;
+                min = max;
+                max = tmp;
+            }
+            if ((val + tolerance) >= min && (val - tolerance) <= max)
+            {
+                return true;
+            }
+
+            return false;
+        }
+
+
+        public static double RoundWithPrecision(double f, double precision)
+        {
+            if (precision < 0.0)
+            {
+                return f;
+            }
+
+            double mul = Math.Pow(10.0, precision);
+            double fTemp = Math.Floor(f * mul) / mul;
+
+            return fTemp;
+        }
+
+
+        public static double Clamp(double a, double low, double high)
+        {
+            return Math.Max(low, Math.Min(a, high));
+        }
+
+
+        public static void Swap<T>(ref T a, ref T b)
+        {
+            T tmp = a;
+            a = b;
+            b = tmp;
+        }
+
+
+        public static uint Jenkins32Hash(byte[] data, uint nInitialValue)
+        {
+            foreach (byte b in data)
+            {
+                nInitialValue += (uint)b;
+                nInitialValue += (nInitialValue << 10);
+                nInitialValue += (nInitialValue >> 6);
+            }
+
+            nInitialValue += (nInitialValue << 3);
+            nInitialValue ^= (nInitialValue >> 11);
+            nInitialValue += (nInitialValue << 15);
+
+            return nInitialValue;
+        }
+    }
+}