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a8027d87b6
Logic is shared with the timeline blueprints which also have the same problem of displaying text on top of a combo colour. Slightly modified the formula. Seems to yield better results on a subjective check.
24 lines
982 B
C#
24 lines
982 B
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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using osu.Game.Graphics;
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using osuTK.Graphics;
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namespace osu.Game.Utils
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{
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public static class ColourUtils
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{
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/// <summary>
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/// Returns a foreground text colour that is supposed to contrast well on top of
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/// the supplied <paramref name="backgroundColour"/>.
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/// </summary>
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public static Color4 ForegroundTextColourFor(Color4 backgroundColour)
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{
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// formula taken from the RGB->YIQ conversions: https://en.wikipedia.org/wiki/YIQ
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// brightness here is equivalent to the Y component in the above colour model, which is a rough estimate of lightness.
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float brightness = 0.299f * backgroundColour.R + 0.587f * backgroundColour.G + 0.114f * backgroundColour.B;
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return OsuColour.Gray(brightness > 0.5f ? 0.2f : 0.9f);
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}
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}
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}
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