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Code Issues Releases Wiki Activity

Color gradients - Added API for requesting a seamless gradient

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Robert 2021-03-29 19:46:30 +02:00
parent 6fb24f87e3
commit 2c3e64c588
1 changed files with 55 additions and 24 deletions
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79
src/Artemis.Core/Models/Profile/Colors/ColorGradient.cs
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@ -40,17 +40,24 @@ namespace Artemis.Core
/// Gets all the colors in the color gradient
/// </summary>
/// <param name="timesToRepeat">The amount of times to repeat the colors</param>
/// <returns></returns>
public SKColor[] GetColorsArray(int timesToRepeat = 0)
/// <param name="seamless">
/// A boolean indicating whether to make the gradient seamless by adding the first color behind the
/// last color
/// </param>
/// <returns>An array containing each color in the gradient</returns>
public SKColor[] GetColorsArray(int timesToRepeat = 0, bool seamless = false)
{
if (timesToRepeat == 0)
return Stops.Select(c => c.Color).ToArray();
List<SKColor> colors = Stops.Select(c => c.Color).ToList();
List<SKColor> result = new();
for (int i = 0; i <= timesToRepeat; i++)
result.AddRange(colors);
if (timesToRepeat == 0)
result = Stops.Select(c => c.Color).ToList();
else
{
List<SKColor> colors = Stops.Select(c => c.Color).ToList();
for (int i = 0; i <= timesToRepeat; i++)
result.AddRange(colors);
}
if (seamless && !IsSeamless())
result.Add(result[0]);
return result.ToArray();
}
@ -59,24 +66,39 @@ namespace Artemis.Core
/// Gets all the positions in the color gradient
/// </summary>
/// <param name="timesToRepeat">
/// The amount of times to repeat the positions, positions will get squished together and
/// always stay between 0.0 and 1.0
/// The amount of times to repeat the positions
/// </param>
/// <returns></returns>
public float[] GetPositionsArray(int timesToRepeat = 0)
/// <param name="seamless">
/// A boolean indicating whether to make the gradient seamless by adding the first color behind the
/// last color
/// </param>
/// <returns>An array containing a position for each color between 0.0 and 1.0</returns>
public float[] GetPositionsArray(int timesToRepeat = 0, bool seamless = false)
{
if (timesToRepeat == 0)
return Stops.Select(c => c.Position).ToArray();
// Create stops and a list of divided stops
List<float> stops = Stops.Select(c => c.Position / (timesToRepeat + 1)).ToList();
List<float> result = new();
// For each repeat cycle, add the base stops to the end result
for (int i = 0; i <= timesToRepeat; i++)
if (timesToRepeat == 0)
result = Stops.Select(c => c.Position).ToList();
else
{
List<float> localStops = stops.Select(s => s + result.LastOrDefault()).ToList();
result.AddRange(localStops);
// Create stops and a list of divided stops
List<float> stops = Stops.Select(c => c.Position / (timesToRepeat + 1)).ToList();
// For each repeat cycle, add the base stops to the end result
for (int i = 0; i <= timesToRepeat; i++)
{
float lastStop = result.LastOrDefault();
result.AddRange(stops.Select(s => s + lastStop));
}
}
if (seamless && !IsSeamless())
{
// Compress current points evenly
float compression = 1f - 1f / result.Count;
for (int index = 0; index < result.Count; index++)
result[index] = result[index] * compression;
// Add one extra point at the end
result.Add(1f);
}
return result.ToArray();
@ -140,8 +162,17 @@ namespace Artemis.Core
float position = 1f / (FastLedRainbow.Length - 1f) * index;
gradient.Stops.Add(new ColorGradientStop(skColor, position));
}
return gradient;
}
/// <summary>
/// Determines whether the gradient is seamless
/// </summary>
/// <returns><see langword="true" /> if the gradient is seamless; <see langword="false" /> otherwise</returns>
public bool IsSeamless()
{
return Stops.Count == 0 || Stops.First().Color.Equals(Stops.Last().Color);
}
}
}