*

Unity/Assets/Scripts/Math/Double3.cs

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+using UnityEngine;
+using System.Collections;
+using System;
+
+public struct Double3
+{
+    public double x;
+    public double y;
+    public double z;
+
+    public Double3(double x, double y, double z)
+    {
+        this.x = x;
+        this.y = y;
+        this.z = z;
+    }
+
+    public double magnitude
+    {
+        get { return Math.Sqrt(x*x + y*y + z*z); }
+    }
+
+    public static Double3 zero
+    {
+        get { return new Double3(0, 0, 0); }
+    }
+}

Unity/Assets/Scripts/Math/Double3.cs.meta

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+licenseType: Free
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Unity/Assets/Scripts/Math/Vector3Ex.cs

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+using UnityEngine;
+using System.Collections;
+
+public static class Vector3Ex {
+
+    public static string ToStringEx(this Vector3 vector) {
+        return string.Format("X: {0} Y: {1} Z: {2}", vector.x, vector.y, vector.z);
+    }
+}

Unity/Assets/Scripts/Math/Vector3Ex.cs.meta

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