mirror of https://github.com/SixLabors/ImageSharp
James Jackson-South
2 years ago
11 changed files with 202 additions and 43 deletions
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// Copyright (c) Six Labors.
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// Licensed under the Six Labors Split License.
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using SixLabors.ColorProfiles; |
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using SixLabors.ImageSharp.ColorProfiles; |
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namespace SixLabors.ImageSharp.Tests.ColorProfiles.Conversion; |
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/// <summary>
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/// Tests <see cref="CieXyz"/>-<see cref="Rgb"/> conversions.
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/// </summary>
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/// <remarks>
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/// Test data generated using:
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/// <see href="http://www.brucelindbloom.com/index.html?ColorCalculator.html"/>
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/// </remarks>
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public class RgbAndCieXyzConversionTest |
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{ |
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private static readonly ApproximateColorProfileComparer Comparer = new(.0001F); |
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[Theory] |
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[InlineData(0.96422, 1.00000, 0.82521, 1, 1, 1)] |
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[InlineData(0.00000, 1.00000, 0.00000, 0, 1, 0)] |
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[InlineData(0.96422, 0.00000, 0.00000, 1, 0, 0.292064)] |
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[InlineData(0.00000, 0.00000, 0.82521, 0, 0.181415, 1)] |
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[InlineData(0, 0, 0, 0, 0, 0)] |
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[InlineData(0.297676, 0.267854, 0.045504, 0.720315, 0.509999, 0.168112)] |
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public void Convert_XYZ_D50_to_SRGB(float x, float y, float z, float r, float g, float b) |
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{ |
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// Arrange
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CieXyz input = new(x, y, z); |
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ColorConversionOptions options = new() { WhitePoint = Illuminants.D50, TargetRgbWorkingSpace = RgbWorkingSpaces.SRgb }; |
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ColorProfileConverter converter = new(options); |
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Rgb expected = new(r, g, b); |
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Span<CieXyz> inputSpan = new CieXyz[5]; |
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inputSpan.Fill(input); |
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Span<Rgb> actualSpan = new Rgb[5]; |
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// Act
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Rgb actual = converter.Convert<CieXyz, Rgb>(input); |
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converter.Convert<CieXyz, Rgb>(inputSpan, actualSpan); |
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// Assert
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Assert.Equal(expected, actual, Comparer); |
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for (int i = 0; i < actualSpan.Length; i++) |
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{ |
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Assert.Equal(expected, actualSpan[i], Comparer); |
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} |
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} |
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[Theory] |
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[InlineData(0.950470, 1.000000, 1.088830, 1, 1, 1)] |
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[InlineData(0, 1.000000, 0, 0, 1, 0)] |
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[InlineData(0.950470, 0, 0, 1, 0, 0.254967)] |
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[InlineData(0, 0, 1.088830, 0, 0.235458, 1)] |
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[InlineData(0, 0, 0, 0, 0, 0)] |
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[InlineData(0.297676, 0.267854, 0.045504, 0.754903, 0.501961, 0.099998)] |
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public void Convert_XYZ_D65_to_SRGB(float x, float y, float z, float r, float g, float b) |
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{ |
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// Arrange
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CieXyz input = new(x, y, z); |
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ColorConversionOptions options = new() { WhitePoint = Illuminants.D65, TargetRgbWorkingSpace = RgbWorkingSpaces.SRgb }; |
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ColorProfileConverter converter = new(options); |
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Rgb expected = new(r, g, b); |
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Span<CieXyz> inputSpan = new CieXyz[5]; |
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inputSpan.Fill(input); |
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Span<Rgb> actualSpan = new Rgb[5]; |
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// Act
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Rgb actual = converter.Convert<CieXyz, Rgb>(input); |
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converter.Convert<CieXyz, Rgb>(inputSpan, actualSpan); |
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// Assert
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Assert.Equal(expected, actual, Comparer); |
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for (int i = 0; i < actualSpan.Length; i++) |
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{ |
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Assert.Equal(expected, actualSpan[i], Comparer); |
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} |
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} |
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[Theory] |
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[InlineData(1, 1, 1, 0.964220, 1.000000, 0.825210)] |
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[InlineData(0, 0, 0, 0, 0, 0)] |
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[InlineData(1, 0, 0, 0.436075, 0.222504, 0.013932)] |
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[InlineData(0, 1, 0, 0.385065, 0.716879, 0.0971045)] |
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[InlineData(0, 0, 1, 0.143080, 0.060617, 0.714173)] |
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[InlineData(0.754902, 0.501961, 0.100000, 0.315757, 0.273323, 0.035506)] |
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public void Convert_SRGB_to_XYZ_D50(float r, float g, float b, float x, float y, float z) |
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{ |
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// Arrange
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Rgb input = new(r, g, b); |
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ColorConversionOptions options = new() { TargetWhitePoint = Illuminants.D50, RgbWorkingSpace = RgbWorkingSpaces.SRgb }; |
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ColorProfileConverter converter = new(options); |
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CieXyz expected = new(x, y, z); |
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Span<Rgb> inputSpan = new Rgb[5]; |
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inputSpan.Fill(input); |
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Span<CieXyz> actualSpan = new CieXyz[5]; |
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// Act
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CieXyz actual = converter.Convert<Rgb, CieXyz>(input); |
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converter.Convert<Rgb, CieXyz>(inputSpan, actualSpan); |
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// Assert
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Assert.Equal(expected, actual, Comparer); |
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for (int i = 0; i < actualSpan.Length; i++) |
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{ |
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Assert.Equal(expected, actualSpan[i], Comparer); |
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} |
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} |
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[Theory] |
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[InlineData(1, 1, 1, 0.950470, 1.000000, 1.088830)] |
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[InlineData(0, 0, 0, 0, 0, 0)] |
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[InlineData(1, 0, 0, 0.412456, 0.212673, 0.019334)] |
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[InlineData(0, 1, 0, 0.357576, 0.715152, 0.119192)] |
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[InlineData(0, 0, 1, 0.1804375, 0.072175, 0.950304)] |
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[InlineData(0.754902, 0.501961, 0.100000, 0.297676, 0.267854, 0.045504)] |
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public void Convert_SRGB_to_XYZ_D65(float r, float g, float b, float x, float y, float z) |
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{ |
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// Arrange
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Rgb input = new(r, g, b); |
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ColorConversionOptions options = new() { TargetWhitePoint = Illuminants.D65, RgbWorkingSpace = RgbWorkingSpaces.SRgb }; |
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ColorProfileConverter converter = new(options); |
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CieXyz expected = new(x, y, z); |
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Span<Rgb> inputSpan = new Rgb[5]; |
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inputSpan.Fill(input); |
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Span<CieXyz> actualSpan = new CieXyz[5]; |
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// Act
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CieXyz actual = converter.Convert<Rgb, CieXyz>(input); |
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converter.Convert<Rgb, CieXyz>(inputSpan, actualSpan); |
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// Assert
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Assert.Equal(expected, actual, Comparer); |
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for (int i = 0; i < actualSpan.Length; i++) |
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{ |
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Assert.Equal(expected, actualSpan[i], Comparer); |
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} |
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} |
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} |
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