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Merge branch 'premultiply-alpha' into 'main'
Add interpolation with premultiplied alpha See merge request Wacton/Unicolour!37
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,153 @@ | ||
| namespace Wacton.Unicolour.Tests; | ||
|
|
||
| using System; | ||
| using System.Collections.Generic; | ||
| using NUnit.Framework; | ||
| using Wacton.Unicolour.Tests.Utils; | ||
|
|
||
| public class ColourTripletTests | ||
| { | ||
| private static readonly List<TestCaseData> GetHueTestData = new() | ||
| { | ||
| new TestCaseData(new ColourTriplet(7.7, 8.8, 9.9, null), null), | ||
| new TestCaseData(new ColourTriplet(7.7, 8.8, 9.9, 0), 7.7), | ||
| new TestCaseData(new ColourTriplet(7.7, 8.8, 9.9, 1), null), | ||
| new TestCaseData(new ColourTriplet(7.7, 8.8, 9.9, 2), 9.9) | ||
| }; | ||
|
|
||
| private static readonly List<TestCaseData> OverrideHueTestData = new() | ||
| { | ||
| new TestCaseData(new ColourTriplet(7.7, 8.8, 9.9, null), 6.6, null), | ||
| new TestCaseData(new ColourTriplet(7.7, 8.8, 9.9, 0), 6.6, new ColourTriplet(6.6, 8.8, 9.9, 0)), | ||
| new TestCaseData(new ColourTriplet(7.7, 8.8, 9.9, 1), 6.6, null), | ||
| new TestCaseData(new ColourTriplet(7.7, 8.8, 9.9, 2), 6.6, new ColourTriplet(7.7, 8.8, 6.6, 0)) | ||
| }; | ||
|
|
||
| private static readonly List<TestCaseData> ModuloHueTestData = new() | ||
| { | ||
| new TestCaseData(new ColourTriplet(-270, 450, 810, null), new ColourTriplet(-270, 450, 810, null)), | ||
| new TestCaseData(new ColourTriplet(-270, 450, 810, 0), new ColourTriplet(90, 450, 810, 0)), | ||
| new TestCaseData(new ColourTriplet(-270, 450, 810, 1), null), | ||
| new TestCaseData(new ColourTriplet(-270, 450, 810, 2), new ColourTriplet(-270, 450, 90, 2)) | ||
| }; | ||
|
|
||
| private static readonly List<TestCaseData> PremultipliedAlphaTestData = new() | ||
| { | ||
| new TestCaseData(new ColourTriplet(2, 10, -8.8, null), 0.5, new ColourTriplet(1, 5, -4.4, null)), | ||
| new TestCaseData(new ColourTriplet(2, 10, -8.8, 0), 0.5, new ColourTriplet(2, 5, -4.4, 0)), | ||
| new TestCaseData(new ColourTriplet(2, 10, -8.8, 1), 0.5, null), | ||
| new TestCaseData(new ColourTriplet(2, 10, -8.8, 2), 0.5, new ColourTriplet(1, 5, -8.8, 2)) | ||
| }; | ||
|
|
||
| private static readonly List<TestCaseData> UnpremultipliedAlphaTestData = new() | ||
| { | ||
| new TestCaseData(new ColourTriplet(1, 5, -4.4, null), 0.5, new ColourTriplet(2, 10, -8.8, null)), | ||
| new TestCaseData(new ColourTriplet(1, 5, -4.4, 0), 0.5, new ColourTriplet(1, 10, -8.8, 0)), | ||
| new TestCaseData(new ColourTriplet(1, 5, -4.4, 1), 0.5, null), | ||
| new TestCaseData(new ColourTriplet(1, 5, -4.4, 2), 0.5, new ColourTriplet(2, 10, -4.4, 2)) | ||
| }; | ||
|
|
||
| [TestCase(0, 0, 0)] | ||
| [TestCase(0, 0.5, 1)] | ||
| [TestCase(1, 1, 1)] | ||
| [TestCase(double.MinValue, 0.5, 0.5)] | ||
| [TestCase(0.5, double.MinValue, 0.5)] | ||
| [TestCase(0.5, 0.5, double.MinValue)] | ||
| [TestCase(double.MaxValue, 0.5, 0.5)] | ||
| [TestCase(0.5, double.MaxValue, 0.5)] | ||
| [TestCase(0.5, 0.5, double.MaxValue)] | ||
| [TestCase(double.Epsilon, 0.5, 0.5)] | ||
| [TestCase(0.5, double.Epsilon, 0.5)] | ||
| [TestCase(0.5, 0.5, double.Epsilon)] | ||
| [TestCase(double.NegativeInfinity, 0.5, 0.5)] | ||
| [TestCase(0.5, double.NegativeInfinity, 0.5)] | ||
| [TestCase(0.5, 0.5, double.NegativeInfinity)] | ||
| [TestCase(double.PositiveInfinity, 0.5, 0.5)] | ||
| [TestCase(0.5, double.PositiveInfinity, 0.5)] | ||
| [TestCase(0.5, 0.5, double.PositiveInfinity)] | ||
| [TestCase(double.NaN, 0.5, 0.5)] | ||
| [TestCase(0.5, double.NaN, 0.5)] | ||
| [TestCase(0.5, 0.5, double.NaN)] | ||
| public void AsArray(double first, double second, double third) | ||
| { | ||
| var triplet = new ColourTriplet(first, second, third); | ||
| var array = triplet.AsArray(); | ||
| Assert.That(array[0], Is.EqualTo(first)); | ||
| Assert.That(array[1], Is.EqualTo(second)); | ||
| Assert.That(array[2], Is.EqualTo(third)); | ||
| Assert.That(array[0], Is.EqualTo(triplet.First)); | ||
| Assert.That(array[1], Is.EqualTo(triplet.Second)); | ||
| Assert.That(array[2], Is.EqualTo(triplet.Third)); | ||
| } | ||
|
|
||
| [TestCaseSource(nameof(GetHueTestData))] | ||
| public void GetHue(ColourTriplet triplet, double? expectedHue) | ||
| { | ||
| if (triplet.HueIndex is null or 1) | ||
| { | ||
| Assert.Throws<ArgumentOutOfRangeException>(() => triplet.HueValue()); | ||
| return; | ||
| } | ||
|
|
||
| var hue = double.NaN; | ||
| Assert.DoesNotThrow(() => hue = triplet.HueValue()); | ||
| Assert.That(hue, Is.EqualTo(expectedHue)); | ||
| } | ||
|
|
||
| [TestCaseSource(nameof(OverrideHueTestData))] | ||
| public void OverrideHue(ColourTriplet triplet, double hueOverride, ColourTriplet expectedTriplet) | ||
| { | ||
| if (triplet.HueIndex is null or 1) | ||
| { | ||
| Assert.Throws<ArgumentOutOfRangeException>(() => triplet.WithHueOverride(hueOverride)); | ||
| return; | ||
| } | ||
|
|
||
| ColourTriplet hueOverrideTriplet = null!; | ||
| Assert.DoesNotThrow(() => hueOverrideTriplet = triplet.WithHueOverride(hueOverride)); | ||
| Assert.That(hueOverrideTriplet.HueValue(), Is.EqualTo(hueOverride)); | ||
| AssertUtils.AssertTriplet(hueOverrideTriplet, expectedTriplet, 0.00000000001); | ||
| } | ||
|
|
||
| [TestCaseSource(nameof(ModuloHueTestData))] | ||
| public void ModuloHue(ColourTriplet triplet, ColourTriplet expectedTriplet) | ||
| { | ||
| if (triplet.HueIndex is 1) | ||
| { | ||
| Assert.Throws<ArgumentOutOfRangeException>(() => triplet.WithHueModulo()); | ||
| return; | ||
| } | ||
|
|
||
| ColourTriplet hueModuloTriplet = null!; | ||
| Assert.DoesNotThrow(() => hueModuloTriplet = triplet.WithHueModulo()); | ||
| AssertUtils.AssertTriplet(hueModuloTriplet, expectedTriplet, 0.00000000001); | ||
| } | ||
|
|
||
| [TestCaseSource(nameof(PremultipliedAlphaTestData))] | ||
| public void PremultipliedAlpha(ColourTriplet triplet, double alpha, ColourTriplet expectedTriplet) | ||
| { | ||
| if (triplet.HueIndex is 1) | ||
| { | ||
| Assert.Throws<ArgumentOutOfRangeException>(() => triplet.WithPremultipliedAlpha(alpha)); | ||
| return; | ||
| } | ||
|
|
||
| ColourTriplet premultipliedAlphaTriplet = null!; | ||
| Assert.DoesNotThrow(() => premultipliedAlphaTriplet = triplet.WithPremultipliedAlpha(alpha)); | ||
| AssertUtils.AssertTriplet(premultipliedAlphaTriplet, expectedTriplet, 0.00000000001); | ||
| } | ||
|
|
||
| [TestCaseSource(nameof(UnpremultipliedAlphaTestData))] | ||
| public void UnpremultipliedAlpha(ColourTriplet triplet, double alpha, ColourTriplet expectedTriplet) | ||
| { | ||
| if (triplet.HueIndex is 1) | ||
| { | ||
| Assert.Throws<ArgumentOutOfRangeException>(() => triplet.WithUnpremultipliedAlpha(alpha)); | ||
| return; | ||
| } | ||
|
|
||
| ColourTriplet unpremultipliedAlphaTriplet = null!; | ||
| Assert.DoesNotThrow(() => unpremultipliedAlphaTriplet = triplet.WithUnpremultipliedAlpha(alpha)); | ||
| AssertUtils.AssertTriplet(unpremultipliedAlphaTriplet, expectedTriplet, 0.00000000001); | ||
| } | ||
| } |
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