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castarcocastarco
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Added CIE's 1960 UVW color space
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‎CHANGELOG.md

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ColorSharp's Changelog
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======================
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## 2015-01-13 : 0.9.0 Release
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### Contributors
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* Andrés Correa Casablanca <castarco@gmail.com , castarco@litipk.com>
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### Changes
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* Added CIE's 1960 UVW color space
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* Less destructive conversions (now the data is better preserved)
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* Now ToSRGB, ToCIExyY and ToCIEUVW are virtual methods, not abstract.
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## 2014-12-19 : 0.8.3 Release
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### Contributors

‎ColorSharp.sln

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@@ -34,6 +34,6 @@ Global
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$0.VersionControlPolicy = $2
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$2.inheritsSet = Mono
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description = A .Net/Mono library to handle color spaces (and light spectrums!)
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version = 0.8.3
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version = 0.9.0
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EndGlobalSection
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EndGlobal

‎ColorSharp/ColorSharp.csproj

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<SignAssembly>true</SignAssembly>
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<DelaySign>false</DelaySign>
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<AssemblyOriginatorKeyFile>colorsharp.snk</AssemblyOriginatorKeyFile>
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<ReleaseVersion>0.8.3</ReleaseVersion>
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<ReleaseVersion>0.9.0</ReleaseVersion>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
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<DebugSymbols>true</DebugSymbols>
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<Compile Include="src\MatchingFunctions\CIE1931XYZ1NmMatchingFunctionX.cs" />
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<Compile Include="src\MatchingFunctions\CIE1931XYZ1NmMatchingFunctionY.cs" />
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<Compile Include="src\MatchingFunctions\CIE1931XYZ1NmMatchingFunctionZ.cs" />
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<Compile Include="src\ColorSpaces\CIEUVW.cs" />
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</ItemGroup>
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<Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
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<ItemGroup>

‎ColorSharp/Properties/AssemblyInfo.cs

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// The form "{Major}.{Minor}.*" will automatically update the build and revision,
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// and "{Major}.{Minor}.{Build}.*" will update just the revision.
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[assembly: AssemblyVersion ("0.8.3.*")]
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[assembly: AssemblyVersion ("0.9.0.*")]
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// The following attributes are used to specify the signing key for the assembly,
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// if desired. See the Mono documentation for more information about signing.

‎ColorSharp/src/ColorSpaces/AConvertibleColor.cs

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@@ -100,12 +100,14 @@ public AConvertibleColor ConvertTo (Type t, ConversionStrategy strategy=Conversi
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/**
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* Helper method used by ConvertTo.
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*/
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private AConvertibleColor InnerConvertTo (Type t, ConversionStrategy strategy = ConversionStrategy.Default)
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AConvertibleColor InnerConvertTo (Type t, ConversionStrategy strategy = ConversionStrategy.Default)
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{
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if (t == typeof(CIEXYZ))
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return ToCIEXYZ (strategy);
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if (t == typeof(CIExyY))
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return ToCIExyY(strategy);
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if (t == typeof(CIEUVW))
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return ToCIEUVW (strategy);
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if (t == typeof(SRGB))
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return ToSRGB (strategy);
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@@ -130,12 +132,26 @@ private AConvertibleColor InnerConvertTo (Type t, ConversionStrategy strategy =
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/**
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* <summary>Converts the color sample to a CIE's 1931 xyY color sample.</summary>
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*/
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public abstract CIExyY ToCIExyY (ConversionStrategy strategy = ConversionStrategy.Default);
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public virtual CIExyY ToCIExyY (ConversionStrategy strategy = ConversionStrategy.Default)
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{
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return (DataSource as CIExyY) ?? ToCIEXYZ ().ToCIExyY ();
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}
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/**
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* <summary>Converts the color sample to a CIE's 1960 UVW color sample.</summary>
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*/
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public virtual CIEUVW ToCIEUVW (ConversionStrategy strategy = ConversionStrategy.Default)
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{
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return (DataSource as CIEUVW) ?? ToCIEXYZ ().ToCIEUVW ();
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}
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/**
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* <summary>Converts the color sample to an HP's and Microsoft's 1996 sRGB sample.</summary>
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*/
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public abstract SRGB ToSRGB(ConversionStrategy strategy = ConversionStrategy.Default);
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public virtual SRGB ToSRGB(ConversionStrategy strategy = ConversionStrategy.Default)
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{
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return (DataSource as SRGB) ?? ToCIEXYZ ().ToSRGB ();
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}
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#endregion
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}

‎ColorSharp/src/ColorSpaces/CIEUVW.cs

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/*
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* The MIT License (MIT)
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* Copyright (c) 2014 Andrés Correa Casablanca
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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/*
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* Contributors:
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* - Andrés Correa Casablanca <castarco@gmail.com , castarco@litipk.com>
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*/
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using System;
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namespace Litipk.ColorSharp
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{
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namespace ColorSpaces
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{
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/**
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* <summary>CIE's 1960 UVW Color Space.</summary>
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*/
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public sealed class CIEUVW : AConvertibleColor
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{
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#region properties
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/**
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* <value>U component of the CIE's 1960 UVW color space.</value>
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*/
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public readonly double U;
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/**
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* <value>V component of the CIE's 1960 UVW color space.</value>
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*/
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public readonly double V;
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/**
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* <value>W component of the CIE's 1960 UVW color space.</value>
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*/
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public readonly double W;
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#endregion
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#region constructors
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public CIEUVW (double U, double V, double W, AConvertibleColor dataSource=null) : base(dataSource)
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{
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this.U = U;
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this.V = V;
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this.W = W;
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}
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#endregion
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#region AConvertibleColor methods
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/**
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* <inheritdoc />
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*/
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public override bool IsInsideColorSpace()
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{
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// TODO : Improve ?
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return ToCIExyY ().IsInsideColorSpace ();
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}
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/**
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* <inheritdoc />
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*/
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public override CIEXYZ ToCIEXYZ (ConversionStrategy strategy=ConversionStrategy.Default)
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{
90+
return (DataSource as CIEXYZ) ?? new CIEXYZ (
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1.5 * U, V, 1.5 * U - 3 * V + 2 * W, DataSource ?? this
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);
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}
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/**
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* <inheritdoc />
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*/
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public override CIEUVW ToCIEUVW (ConversionStrategy strategy = ConversionStrategy.Default)
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{
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return this;
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}
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#endregion
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#region Object methods
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/**
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* <inheritdoc />
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*/
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public override bool Equals(Object obj)
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{
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CIEUVW uvwObj = obj as CIEUVW;
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if (uvwObj == this) {
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return true;
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}
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if (uvwObj == null || GetHashCode () != obj.GetHashCode ()) {
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return false;
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}
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return (U == uvwObj.U && V == uvwObj.V && W == uvwObj.W);
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}
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/**
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* <inheritdoc />
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*/
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public override int GetHashCode ()
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{
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int hash = 77837 + U.GetHashCode (); // 77837 == 277 * 281
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hash = hash * 281 + V.GetHashCode ();
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return hash * 281 + W.GetHashCode ();
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}
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#endregion
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}
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}
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}

‎ColorSharp/src/ColorSpaces/CIEXYZ.cs

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using System;
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using System.Collections.Generic;
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namespace Litipk.ColorSharp
@@ -102,15 +101,35 @@ public override CIEXYZ ToCIEXYZ (ConversionStrategy strategy=ConversionStrategy.
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*/
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public override CIExyY ToCIExyY (ConversionStrategy strategy=ConversionStrategy.Default)
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{
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CIExyY xyYDS = DataSource as CIExyY;
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if (xyYDS != null) {
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return xyYDS;
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}
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double XYZ = X + Y + Z;
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return new CIExyY (X / XYZ, Y / XYZ, Y, DataSource ?? this);
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}
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/**
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* <inheritdoc />
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*/
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public override CIEUVW ToCIEUVW (ConversionStrategy strategy = ConversionStrategy.Default)
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{
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return (DataSource as CIEUVW) ?? new CIEUVW (
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2.0 * X / 3.0, Y, 0.5 * (-X + 3 * Y + Z), DataSource ?? this
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);
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}
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/**
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* <inheritdoc />
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*/
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public override SRGB ToSRGB (ConversionStrategy strategy=ConversionStrategy.ForceLowTruncate|ConversionStrategy.ForceHighStretch)
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{
128+
SRGB srgbDS = DataSource as SRGB;
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if (srgbDS != null) {
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return srgbDS;
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}
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// Linear transformation
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double r = X * 3.2406 + Y * -1.5372 + Z * -0.4986;
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double g = X * -0.9689 + Y * 1.8758 + Z * 0.0415;

‎ColorSharp/src/ColorSpaces/CIExyY.cs

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*/
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public override CIEXYZ ToCIEXYZ (ConversionStrategy strategy=ConversionStrategy.Default)
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{
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return new CIEXYZ (x*Y/y, Y, Y*(1.0 - x - y)/y, DataSource ?? this);
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return (DataSource as CIEXYZ) ?? new CIEXYZ (x*Y/y, Y, Y*(1.0 - x - y)/y, DataSource ?? this);
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}
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/**
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return this;
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}
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/**
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* <inheritdoc />
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*/
182-
public override SRGB ToSRGB (ConversionStrategy strategy = ConversionStrategy.ForceLowTruncate|ConversionStrategy.ForceHighStretch)
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{
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return ToCIEXYZ ().ToSRGB (strategy);
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}
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#endregion
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‎ColorSharp/src/ColorSpaces/SRGB.cs

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*/
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public override CIEXYZ ToCIEXYZ (ConversionStrategy strategy=ConversionStrategy.Default)
100100
{
101+
CIEXYZ xyzDS = DataSource as CIEXYZ;
102+
if (xyzDS != null) {
103+
return xyzDS;
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}
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101106
// Gamma correction
102107
double r = R > 0.04045 ? Math.Pow((R+0.055)/1.055, 2.4) : R/12.92 ;
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double g = G > 0.04045 ? Math.Pow((G+0.055)/1.055, 2.4) : G/12.92 ;
@@ -112,14 +117,6 @@ public override CIEXYZ ToCIEXYZ (ConversionStrategy strategy=ConversionStrategy.
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);
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}
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/**
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* <inheritdoc />
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*/
118-
public override CIExyY ToCIExyY (ConversionStrategy strategy = ConversionStrategy.Default)
119-
{
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return ToCIEXYZ ().ToCIExyY ();
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}
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/**
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* <inheritdoc />
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*/

‎ColorSharp/src/LightSpectrums/ALightSpectrum.cs

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@@ -116,22 +116,6 @@ MFs [0].DoConvolution (this), MFs [1].DoConvolution (this), MFs [2].DoConvolutio
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);
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}
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119-
/**
120-
* <inheritdoc />
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*/
122-
public override CIExyY ToCIExyY (ConversionStrategy strategy = ConversionStrategy.Default)
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{
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return ToCIEXYZ ().ToCIExyY (strategy);
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}
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/**
128-
* <inheritdoc />
129-
*/
130-
public override SRGB ToSRGB(ConversionStrategy strategy = ConversionStrategy.ForceLowTruncate|ConversionStrategy.ForceHighStretch)
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{
132-
return ToCIEXYZ ().ToSRGB (strategy);
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}
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#endregion
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}
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}

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