From c732a8245621dfb4ccca4b6de73af687cb8a7b2e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Wies=C5=82aw=20=C5=A0olt=C3=A9s?= <wieslaw.soltes@gmail.com>
Date: Tue, 20 Sep 2022 10:04:42 +0200
Subject: [PATCH] Update comments

---
 src/Avalonia.Base/Utilities/SpringSolver.cs | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/Avalonia.Base/Utilities/SpringSolver.cs b/src/Avalonia.Base/Utilities/SpringSolver.cs
index 6a9e69d221..d067872378 100644
--- a/src/Avalonia.Base/Utilities/SpringSolver.cs
+++ b/src/Avalonia.Base/Utilities/SpringSolver.cs
@@ -49,8 +49,11 @@ internal struct SpringSolver
             zeta, 
             initialVelocity)
     {
-        // T is period
-        // T = 2 * PI * sqrt(m / k)
+        // T is time period [s]
+        // T = (2*PI / sqrt(k)) * sqrt(m)
+
+        // ωn is natural frequency of the system [Hz] [1/s]
+        // ωn = 2*PI / T
     }
 
     /// <summary>
@@ -66,6 +69,9 @@ internal struct SpringSolver
             c / (2 * Math.Sqrt(k * m)), // c / Cc
             initialVelocity)
     {
+        // ωn is natural frequency of the system [Hz] [1/s]
+        // ωn = sqrt(k / m)
+
         // Cc is critical damping coefficient
         // Cc = 2 * Sqrt(k * m)
         // Cc = 2 * m * wn
@@ -83,7 +89,6 @@ internal struct SpringSolver
     /// <param name="initialVelocity"></param>
     public SpringSolver(double ωn, double zeta, double initialVelocity)
     {
-        // ωn = sqrt(k / m)
         m_w0 = ωn;
         m_zeta = zeta;