mirror of https://github.com/ppy/osu
44 lines
1.8 KiB
C#
44 lines
1.8 KiB
C#
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// 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.Framework.Extensions.EnumExtensions;
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using osu.Framework.Graphics;
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using osuTK;
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namespace osu.Game.Storyboards
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{
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public static class StoryboardExtensions
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{
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/// <summary>
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/// Given an origin and a set of properties, adjust the origin to display the sprite/animation correctly.
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/// </summary>
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/// <param name="origin">The current origin.</param>
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/// <param name="vectorScale">The vector scale.</param>
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/// <param name="flipH">Whether the element is flipped horizontally.</param>
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/// <param name="flipV">Whether the element is flipped vertically.</param>
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/// <returns>The adjusted origin.</returns>
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public static Anchor AdjustOrigin(Anchor origin, Vector2 vectorScale, bool flipH, bool flipV)
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{
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// Either flip horizontally or negative X scale, but not both.
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if (flipH ^ (vectorScale.X < 0))
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{
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if (origin.HasFlagFast(Anchor.x0))
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origin = Anchor.x2 | (origin & (Anchor.y0 | Anchor.y1 | Anchor.y2));
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else if (origin.HasFlagFast(Anchor.x2))
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origin = Anchor.x0 | (origin & (Anchor.y0 | Anchor.y1 | Anchor.y2));
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}
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// Either flip vertically or negative Y scale, but not both.
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if (flipV ^ (vectorScale.Y < 0))
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{
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if (origin.HasFlagFast(Anchor.y0))
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origin = Anchor.y2 | (origin & (Anchor.x0 | Anchor.x1 | Anchor.x2));
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else if (origin.HasFlagFast(Anchor.y2))
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origin = Anchor.y0 | (origin & (Anchor.x0 | Anchor.x1 | Anchor.x2));
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}
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return origin;
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}
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}
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}
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