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Evan Hemsley 2 years ago
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fbdeea55fb
6 changed files with 438 additions and 0 deletions
  1. +224
    -0
      .gitignore
  2. +61
    -0
      Easing/Easing.cs
  3. +7
    -0
      Easing/Easing.csproj
  4. +48
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      MoonTools.Core.Easing.sln
  5. +83
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      Test/Easing.cs
  6. +15
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      Test/Test.csproj

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.gitignore View File

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# The following command works for downloading when using Git for Windows:
# curl -LOf http://gist.githubusercontent.com/kmorcinek/2710267/raw/.gitignore
#
# Download this file using PowerShell v3 under Windows with the following comand:
# Invoke-WebRequest https://gist.githubusercontent.com/kmorcinek/2710267/raw/ -OutFile .gitignore
#
# or wget:
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.vscode
# User-specific files
*.suo
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[Dd]ebug/
[Rr]elease/
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[Bb]in/
[Oo]bj/
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#build/
# NuGet Packages
*.nupkg
# The packages folder can be ignored because of Package Restore
**/packages/*
# except build/, which is used as an MSBuild target.
!**/packages/build/
# Uncomment if necessary however generally it will be regenerated when needed
#!**/packages/repositories.config
# MSTest test Results
[Tt]est[Rr]esult*/
[Bb]uild[Ll]og.*
*_i.c
*_p.c
*.ilk
*.meta
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#####

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Easing/Easing.cs View File

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using System;
namespace MoonTools.Core.Easing
{
public static class Easing
{
private static void CheckTime(float time, float duration)
{
if (time > duration) { throw new ArgumentException($"{time} is invalid. Must be less than {duration}."); }
}
private static float NormalizedTime(Func<float, float, float, float, float> easingFunction, float t) => easingFunction(t, 0, 1, 1);
private static float TimeRange(Func<float, float> easingFunction, float time, float start, float end) => start + (end - start) * easingFunction((time - start) / (end - start));
public static float Linear(float t) => NormalizedTime(Linear, t);
public static float Linear(float time, float start, float end) => TimeRange(Linear, time, start, end);
public static float Linear(float t, float b, float c, float d)
{
CheckTime(t, d);
return c * t / d + b;
}
public static float InQuad(float t) => NormalizedTime(InQuad, t);
public static float InQuad(float time, float start, float end) => TimeRange(InQuad, time, start, end);
public static float InQuad(float t, float b, float c, float d)
{
CheckTime(t, d);
t = t / d;
return c * (t * t) + b;
}
public static float OutQuad(float t) => NormalizedTime(OutQuad, t);
public static float OutQuad(float time, float start, float end) => TimeRange(OutQuad, time, start, end);
public static float OutQuad(float t, float b, float c, float d)
{
CheckTime(t, d);
t = t / d;
return -c * t * (t - 2) + b;
}
public static float InOutQuad(float t) => NormalizedTime(InOutQuad, t);
public static float InOutQuad(float time, float start, float end) => TimeRange(InOutQuad, time, start, end);
public static float InOutQuad(float t, float b, float c, float d)
{
CheckTime(t, d);
t = t / d * 2;
if (t < 1)
{
return c / 2 * (t * t) + b;
}
else
{
return -c / 2 * ((t - 1) * (t - 3) - 1) + b;
}
}
}
}

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Easing/Easing.csproj View File

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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>netstandard2.0</TargetFramework>
</PropertyGroup>
</Project>

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MoonTools.Core.Easing.sln View File

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Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 15
VisualStudioVersion = 15.0.26124.0
MinimumVisualStudioVersion = 15.0.26124.0
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Easing", "Easing\Easing.csproj", "{3227364C-6091-429B-B460-E9AA410BC1C0}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Test", "Test\Test.csproj", "{F9F67512-233D-4C1A-A756-23FC8B1E92CA}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
Debug|x64 = Debug|x64
Debug|x86 = Debug|x86
Release|Any CPU = Release|Any CPU
Release|x64 = Release|x64
Release|x86 = Release|x86
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{3227364C-6091-429B-B460-E9AA410BC1C0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{3227364C-6091-429B-B460-E9AA410BC1C0}.Debug|Any CPU.Build.0 = Debug|Any CPU
{3227364C-6091-429B-B460-E9AA410BC1C0}.Debug|x64.ActiveCfg = Debug|Any CPU
{3227364C-6091-429B-B460-E9AA410BC1C0}.Debug|x64.Build.0 = Debug|Any CPU
{3227364C-6091-429B-B460-E9AA410BC1C0}.Debug|x86.ActiveCfg = Debug|Any CPU
{3227364C-6091-429B-B460-E9AA410BC1C0}.Debug|x86.Build.0 = Debug|Any CPU
{3227364C-6091-429B-B460-E9AA410BC1C0}.Release|Any CPU.ActiveCfg = Release|Any CPU
{3227364C-6091-429B-B460-E9AA410BC1C0}.Release|Any CPU.Build.0 = Release|Any CPU
{3227364C-6091-429B-B460-E9AA410BC1C0}.Release|x64.ActiveCfg = Release|Any CPU
{3227364C-6091-429B-B460-E9AA410BC1C0}.Release|x64.Build.0 = Release|Any CPU
{3227364C-6091-429B-B460-E9AA410BC1C0}.Release|x86.ActiveCfg = Release|Any CPU
{3227364C-6091-429B-B460-E9AA410BC1C0}.Release|x86.Build.0 = Release|Any CPU
{F9F67512-233D-4C1A-A756-23FC8B1E92CA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{F9F67512-233D-4C1A-A756-23FC8B1E92CA}.Debug|Any CPU.Build.0 = Debug|Any CPU
{F9F67512-233D-4C1A-A756-23FC8B1E92CA}.Debug|x64.ActiveCfg = Debug|Any CPU
{F9F67512-233D-4C1A-A756-23FC8B1E92CA}.Debug|x64.Build.0 = Debug|Any CPU
{F9F67512-233D-4C1A-A756-23FC8B1E92CA}.Debug|x86.ActiveCfg = Debug|Any CPU
{F9F67512-233D-4C1A-A756-23FC8B1E92CA}.Debug|x86.Build.0 = Debug|Any CPU
{F9F67512-233D-4C1A-A756-23FC8B1E92CA}.Release|Any CPU.ActiveCfg = Release|Any CPU
{F9F67512-233D-4C1A-A756-23FC8B1E92CA}.Release|Any CPU.Build.0 = Release|Any CPU
{F9F67512-233D-4C1A-A756-23FC8B1E92CA}.Release|x64.ActiveCfg = Release|Any CPU
{F9F67512-233D-4C1A-A756-23FC8B1E92CA}.Release|x64.Build.0 = Release|Any CPU
{F9F67512-233D-4C1A-A756-23FC8B1E92CA}.Release|x86.ActiveCfg = Release|Any CPU
{F9F67512-233D-4C1A-A756-23FC8B1E92CA}.Release|x86.Build.0 = Release|Any CPU
EndGlobalSection
EndGlobal

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Test/Easing.cs View File

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using NUnit.Framework;
using FluentAssertions;
using MoonTools.Core.Easing;
using System;
namespace Test
{
public class EasingTests
{
[Test]
public void Linear()
{
Easing.Linear(0.25f).Should().Be(0.25f);
Easing.Linear(0.5f).Should().Be(0.5f);
Easing.Linear(0.75f).Should().Be(0.75f);
Action invalidTime = () => Easing.Linear(1.5f);
invalidTime.Should().Throw<ArgumentException>();
Easing.Linear(3, 2, 6).Should().Be(3f);
Easing.Linear(4, 2, 6).Should().Be(4f);
Easing.Linear(5, 2, 6).Should().Be(5f);
invalidTime = () => Easing.Linear(7, 2, 6);
invalidTime.Should().Throw<ArgumentException>();
}
[Test]
public void InQuad()
{
Easing.InQuad(0.25f).Should().Be(0.0625f);
Easing.InQuad(0.5f).Should().Be(0.25f);
Easing.InQuad(0.75f).Should().Be(0.5625f);
Action invalidTime = () => Easing.InQuad(1.5f);
invalidTime.Should().Throw<ArgumentException>();
Easing.InQuad(3, 2, 6).Should().Be(2.25f);
Easing.InQuad(4, 2, 6).Should().Be(3f);
Easing.InQuad(5, 2, 6).Should().Be(4.25f);
invalidTime = () => Easing.InQuad(7, 2, 6);
invalidTime.Should().Throw<ArgumentException>();
}
[Test]
public void OutQuad()
{
Easing.OutQuad(0.25f).Should().Be(0.4375f);
Easing.OutQuad(0.5f).Should().Be(0.75f);
Easing.OutQuad(0.75f).Should().Be(0.9375f);
Action invalidTime = () => Easing.OutQuad(1.5f);
invalidTime.Should().Throw<ArgumentException>();
Easing.OutQuad(3, 2, 6).Should().Be(3.75f);
Easing.OutQuad(4, 2, 6).Should().Be(5f);
Easing.OutQuad(5, 2, 6).Should().Be(5.75f);
invalidTime = () => Easing.OutQuad(7, 2, 6);
invalidTime.Should().Throw<ArgumentException>();
}
[Test]
public void InOutQuad()
{
Easing.InOutQuad(0.25f).Should().Be(0.125f);
Easing.InOutQuad(0.5f).Should().Be(0.5f);
Easing.InOutQuad(0.75f).Should().Be(0.875f);
Action invalidTime = () => Easing.InOutQuad(1.5f);
invalidTime.Should().Throw<ArgumentException>();
Easing.InOutQuad(3, 2, 6).Should().Be(2.5f);
Easing.InOutQuad(4, 2, 6).Should().Be(4f);
Easing.InOutQuad(5, 2, 6).Should().Be(5.5f);
invalidTime = () => Easing.InOutQuad(7, 2, 6);
invalidTime.Should().Throw<ArgumentException>();
}
}
}

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Test/Test.csproj View File

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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>netcoreapp3.0</TargetFramework>
<IsPackable>false</IsPackable>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="nunit" Version="3.12.0" />
<PackageReference Include="NUnit3TestAdapter" Version="3.13.0" />
<PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.2.0" />
<PackageReference Include="FluentAssertions" Version="5.9.0" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\Easing\Easing.csproj" />
</ItemGroup>
</Project>

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