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34 lines
2.0 KiB
C#
34 lines
2.0 KiB
C#
// 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 System.Collections.Generic;
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using osu.Game.Rulesets.Objects.Drawables;
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using OpenTK;
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namespace osu.Game.Rulesets.UI.Scrolling.Visualisers
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{
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public interface ISpeedChangeVisualiser
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{
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/// <summary>
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/// Computes the states of <see cref="DrawableHitObject"/>s that are constant, such as lifetime and spatial length.
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/// This is invoked once whenever <paramref name="timeRange"/> or <paramref name="length"/> changes.
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/// </summary>
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/// <param name="hitObjects">The <see cref="DrawableHitObject"/>s whose states should be computed.</param>
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/// <param name="direction">The scrolling direction.</param>
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/// <param name="timeRange">The duration required to scroll through one length of the screen before any control point adjustments.</param>
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/// <param name="length">The length of the screen that is scrolled through.</param>
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void ComputeInitialStates(IEnumerable<DrawableHitObject> hitObjects, ScrollingDirection direction, double timeRange, Vector2 length);
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/// <summary>
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/// Computes the states of <see cref="DrawableHitObject"/>s that change depending on <paramref name="currentTime"/>, such as position.
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/// This is invoked once per frame.
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/// </summary>
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/// <param name="hitObjects">The <see cref="DrawableHitObject"/>s whose states should be computed.</param>
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/// <param name="direction">The scrolling direction.</param>
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/// <param name="currentTime">The current time.</param>
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/// <param name="timeRange">The duration required to scroll through one length of the screen before any control point adjustments.</param>
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/// <param name="length">The length of the screen that is scrolled through.</param>
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void ComputePositions(IEnumerable<DrawableHitObject> hitObjects, ScrollingDirection direction, double currentTime, double timeRange, Vector2 length);
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}
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}
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