From 1491ea8e7587a9d012daff3b6229a8e8d8cb3e1a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Simon=20L=C3=BCbe=C3=9F?= <simon.luebess@gmail.com>
Date: Sat, 11 Sep 2021 12:45:59 +0200
Subject: [PATCH] PI now optimal, added Zero-Check

---
 GlitchyEngine/src/Math/MathHelper.bf | 26 +++++++++++++++++++++-----
 1 file changed, 21 insertions(+), 5 deletions(-)

diff --git a/GlitchyEngine/src/Math/MathHelper.bf b/GlitchyEngine/src/Math/MathHelper.bf
index 05bcb64..fa8d13c 100644
--- a/GlitchyEngine/src/Math/MathHelper.bf
+++ b/GlitchyEngine/src/Math/MathHelper.bf
@@ -1,12 +1,21 @@
+using System;
+
 namespace GlitchyEngine.Math
 {
 	public static class MathHelper
 	{
-		public const float Pi = 3.14159265359f;
-		public const float TwoPi = 6.28318530718f;
-		public const float PiOverTwo = 1.57079632679f;
-		public const float PiOverThree = 1.0471975511965f;
-		public const float PiOverFour =  0.7853981633974f;
+		/// An optimal representation of π.
+		public const float Pi = 3.141592654f;
+		/// An optimal representation of 2*π.
+		public const float TwoPi = 6.283185307f;
+		/// An optimal representation of 1/π.
+		public const float OneOverPi = 0.318309886f;
+		/// An optimal representation of 2/π.
+		public const float OneOverTwoPi = 0.159154943f;
+		/// An optimal representation of π/2.
+		public const float PiOverTwo = 1.570796327f;
+		/// An optimal representation of π/4.
+		public const float PiOverFour = 0.785398163f;
 
 		/// Converts radians to degrees
 		const float RadToDeg = 180.0f / Pi;
@@ -61,5 +70,12 @@ namespace GlitchyEngine.Math
 		{
 			return degrees * DegToRad;
 		}
+
+		const float epsilon = 0.0000001f;
+
+		public static bool IsZero(float value)
+		{
+			return Math.Abs(value) < epsilon;
+		}
 	}
 }