2018-04-13 17:19:50 +08:00
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// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
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// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
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using osu.Framework.Graphics;
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using osu.Framework.Graphics.Transforms;
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namespace osu.Game.Storyboards.Drawables
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{
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public static class DrawablesExtensions
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{
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/// <summary>
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/// Adjusts <see cref="Drawable.Blending"/> after a delay.
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/// </summary>
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/// <returns>A <see cref="TransformSequence{T}"/> to which further transforms can be added.</returns>
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public static TransformSequence<T> TransformBlendingMode<T>(this T drawable, BlendingMode newValue, double delay = 0)
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where T : Drawable
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=> drawable.TransformTo(drawable.PopulateTransform(new TransformBlendingMode(), newValue, delay));
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}
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public class TransformBlendingMode : Transform<BlendingMode, Drawable>
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{
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private BlendingMode valueAt(double time)
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=> time < EndTime ? StartValue : EndValue;
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public override string TargetMember => nameof(Drawable.Blending);
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protected override void Apply(Drawable d, double time) => d.Blending = valueAt(time);
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protected override void ReadIntoStartValue(Drawable d) => StartValue = d.Blending.Mode;
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}
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}
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