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Code Issues Releases Wiki Activity

Color quantizer - Encapsulation & code style

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This commit is contained in:
SpoinkyNL 2020-10-23 19:22:11 +02:00
parent df3c472f7b
commit 31d8c345f5
3 changed files with 42 additions and 33 deletions
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2
src/Artemis.Core/Artemis.Core.csproj.DotSettings
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@ -50,6 +50,8 @@
<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=plugins_005Cmodules_005Cactivationrequirements/@EntryIndexedValue">True</s:Boolean>
<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=plugins_005Csettings/@EntryIndexedValue">True</s:Boolean>
<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=rgb_002Enet/@EntryIndexedValue">True</s:Boolean>
<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=services_005Ccolorquantizer/@EntryIndexedValue">True</s:Boolean>
<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=services_005Ccolorquantizer_005Cinterfaces/@EntryIndexedValue">True</s:Boolean>
<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=services_005Cinterfaces/@EntryIndexedValue">True</s:Boolean>
<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=services_005Cregistration/@EntryIndexedValue">True</s:Boolean>
<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=services_005Cregistration_005Cinterfaces/@EntryIndexedValue">True</s:Boolean>

70
src/Artemis.Core/Services/ColorQuantizer/ColorQuantizerService.cs
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@ -1,13 +1,28 @@
using SkiaSharp;
using System;
using System;
using System.Collections.Generic;
using System.Linq;
using SkiaSharp;
namespace Artemis.Core.Services
{
/// <inheritdoc />
public class ColorQuantizerService : IColorQuantizerService
internal class ColorQuantizerService : IColorQuantizerService
{
private static float GetComparisonValue(float sat, float targetSaturation, float luma, float targetLuma)
{
static float InvertDiff(float value, float target)
{
return 1 - Math.Abs(value - target);
}
const float totalWeight = weightSaturation + weightLuma;
float totalValue = InvertDiff(sat, targetSaturation) * weightSaturation +
InvertDiff(luma, targetLuma) * weightLuma;
return totalValue / totalWeight;
}
/// <inheritdoc />
public SKColor[] Quantize(IEnumerable<SKColor> colors, int amount)
{
@ -20,7 +35,7 @@ namespace Artemis.Core.Services
while (cubes.Count < amount)
{
ColorCube cube = cubes.Dequeue();
if (cube.TrySplit(out var a, out var b))
if (cube.TrySplit(out ColorCube? a, out ColorCube? b))
{
cubes.Enqueue(a);
cubes.Enqueue(b);
@ -30,22 +45,6 @@ namespace Artemis.Core.Services
return cubes.Select(c => c.GetAverageColor()).ToArray();
}
#region Constants
private const float targetDarkLuma = 0.26f;
private const float maxDarkLuma = 0.45f;
private const float minLightLuma = 0.55f;
private const float targetLightLuma = 0.74f;
private const float minNormalLuma = 0.3f;
private const float targetNormalLuma = 0.5f;
private const float maxNormalLuma = 0.7f;
private const float targetMutesSaturation = 0.3f;
private const float maxMutesSaturation = 0.3f;
private const float targetVibrantSaturation = 1.0f;
private const float minVibrantSaturation = 0.35f;
private const float weightSaturation = 3f;
private const float weightLuma = 5f;
#endregion
/// <inheritdoc />
public SKColor FindColorVariation(IEnumerable<SKColor> colors, ColorType type, bool ignoreLimits = false)
{
@ -60,9 +59,9 @@ namespace Artemis.Core.Services
_ => (0.5f, 0f, 1f, 0.5f, 0f, 1f)
};
var bestColorScore = float.MinValue;
var bestColor = SKColor.Empty;
foreach (var clr in colors)
float bestColorScore = float.MinValue;
SKColor bestColor = SKColor.Empty;
foreach (SKColor clr in colors)
{
clr.ToHsl(out float _, out float sat, out float luma);
sat /= 100f;
@ -71,7 +70,7 @@ namespace Artemis.Core.Services
if (!ignoreLimits && (sat <= minSaturation || sat >= maxSaturation || luma <= minLuma || luma >= maxLuma))
continue;
var score = GetComparisonValue(sat, targetSaturation, luma, targetLuma);
float score = GetComparisonValue(sat, targetSaturation, luma, targetLuma);
if (score > bestColorScore)
{
bestColorScore = score;
@ -82,15 +81,22 @@ namespace Artemis.Core.Services
return bestColor;
}
private static float GetComparisonValue(float sat, float targetSaturation, float luma, float targetLuma)
{
static float InvertDiff(float value, float target) => 1 - Math.Abs(value - target);
const float totalweight = weightSaturation + weightLuma;
#region Constants
float totalValue = (InvertDiff(sat, targetSaturation) * weightSaturation) +
(InvertDiff(luma, targetLuma) * weightLuma);
private const float targetDarkLuma = 0.26f;
private const float maxDarkLuma = 0.45f;
private const float minLightLuma = 0.55f;
private const float targetLightLuma = 0.74f;
private const float minNormalLuma = 0.3f;
private const float targetNormalLuma = 0.5f;
private const float maxNormalLuma = 0.7f;
private const float targetMutesSaturation = 0.3f;
private const float maxMutesSaturation = 0.3f;
private const float targetVibrantSaturation = 1.0f;
private const float minVibrantSaturation = 0.35f;
private const float weightSaturation = 3f;
private const float weightLuma = 5f;
return totalValue / totalweight;
}
#endregion
}
}

3
src/Artemis.sln.DotSettings
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@ -213,4 +213,5 @@
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<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ECSharpUseContinuousIndentInsideBracesMigration/@EntryIndexedValue">True</s:Boolean>
<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ESettingsUpgrade_002EAlwaysTreatStructAsNotReorderableMigration/@EntryIndexedValue">True</s:Boolean>
<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ESettingsUpgrade_002EMigrateBlankLinesAroundFieldToBlankLinesAroundProperty/@EntryIndexedValue">True</s:Boolean></wpf:ResourceDictionary>
<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ESettingsUpgrade_002EMigrateBlankLinesAroundFieldToBlankLinesAroundProperty/@EntryIndexedValue">True</s:Boolean>
<s:Boolean x:Key="/Default/UserDictionary/Words/=luma/@EntryIndexedValue">True</s:Boolean></wpf:ResourceDictionary>