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Optimize Math.NearEqual

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This commit is contained in:
Wojtek Figat
2021-11-23 23:17:05 +01:00
parent 4322563eed
commit a9c56caf84
2 changed files with 22 additions and 51 deletions
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26
Source/Engine/Core/Math/Mathf.cs
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@@ -586,8 +586,7 @@ namespace FlaxEngine
/// <param name="maxSpeed">The maximum speed.</param>
/// <param name="deltaTime">The delta time (in seconds) since last update.</param>
/// <returns>The smoothed value.</returns>
public static float SmoothDamp(float current, float target, ref float currentVelocity, float smoothTime, [DefaultValue("float.PositiveInfinity")]
float maxSpeed, [DefaultValue("Time.DeltaTime")] float deltaTime)
public static float SmoothDamp(float current, float target, ref float currentVelocity, float smoothTime, [DefaultValue("float.PositiveInfinity")] float maxSpeed, [DefaultValue("Time.DeltaTime")] float deltaTime)
{
smoothTime = Max(0.0001f, smoothTime);
float a = 2f / smoothTime;
@@ -646,8 +645,7 @@ namespace FlaxEngine
/// <param name="maxSpeed">The maximum speed.</param>
/// <param name="deltaTime">The delta time (in seconds) since last update.</param>
/// <returns>The smoothed value.</returns>
public static float SmoothDampAngle(float current, float target, ref float currentVelocity, float smoothTime, [DefaultValue("float.PositiveInfinity")]
float maxSpeed, [DefaultValue("Time.DeltaTime")] float deltaTime)
public static float SmoothDampAngle(float current, float target, ref float currentVelocity, float smoothTime, [DefaultValue("float.PositiveInfinity")] float maxSpeed, [DefaultValue("Time.DeltaTime")] float deltaTime)
{
target = current + DeltaAngle(current, target);
return SmoothDamp(current, target, ref currentVelocity, smoothTime, maxSpeed, deltaTime);
@@ -905,26 +903,16 @@ namespace FlaxEngine
}
/// <summary>
/// Checks if a and b are almost equals, taking into account the magnitude of floating point numbers (unlike
/// <see cref="WithinEpsilon" /> method). See Remarks.
/// See remarks.
/// Checks if a and b are almost equals, taking into account the magnitude of floating point numbers (unlike <see cref="WithinEpsilon" /> method).
/// </summary>
/// <param name="a">The left value to compare.</param>
/// <param name="b">The right value to compare.</param>
/// <returns><c>true</c> if a almost equal to b, <c>false</c> otherwise</returns>
/// <remarks>
/// The code is using the technique described by Bruce Dawson in
/// <a href="http://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/">
/// Comparing
/// Floating point numbers 2012 edition
/// </a>
/// .
/// </remarks>
/// <remarks>The code is using the technique described by Bruce Dawson in <a href="http://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/">Comparing Floating point numbers 2012 edition</a>.</remarks>
public static unsafe bool NearEqual(float a, float b)
{
// Check if the numbers are really close -- needed
// when comparing numbers near zero.
if (IsZero(a - b))
// Check if the numbers are really close -- needed when comparing numbers near zero.
if (Math.Abs(a - b) < Epsilon)
return true;
// Original from Bruce Dawson: http://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/
@@ -973,7 +961,7 @@ namespace FlaxEngine
/// <returns><c>true</c> if the specified value is close to one (1.0f); otherwise, <c>false</c>.</returns>
public static bool IsOne(float a)
{
return IsZero(a - 1.0f);
return Math.Abs(a - 1.0f) < Epsilon;
}
/// <summary>