// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence. // See the LICENCE file in the repository root for full licence text. #nullable disable using osu.Framework.Extensions.EnumExtensions; using osu.Framework.Graphics; using osuTK; namespace osu.Game.Storyboards { public static class StoryboardExtensions { /// <summary> /// Given an origin and a set of properties, adjust the origin to display the sprite/animation correctly. /// </summary> /// <param name="origin">The current origin.</param> /// <param name="vectorScale">The vector scale.</param> /// <param name="flipH">Whether the element is flipped horizontally.</param> /// <param name="flipV">Whether the element is flipped vertically.</param> /// <returns>The adjusted origin.</returns> public static Anchor AdjustOrigin(Anchor origin, Vector2 vectorScale, bool flipH, bool flipV) { // Either flip horizontally or negative X scale, but not both. if (flipH ^ (vectorScale.X < 0)) { if (origin.HasFlagFast(Anchor.x0)) origin = Anchor.x2 | (origin & (Anchor.y0 | Anchor.y1 | Anchor.y2)); else if (origin.HasFlagFast(Anchor.x2)) origin = Anchor.x0 | (origin & (Anchor.y0 | Anchor.y1 | Anchor.y2)); } // Either flip vertically or negative Y scale, but not both. if (flipV ^ (vectorScale.Y < 0)) { if (origin.HasFlagFast(Anchor.y0)) origin = Anchor.y2 | (origin & (Anchor.x0 | Anchor.x1 | Anchor.x2)); else if (origin.HasFlagFast(Anchor.y2)) origin = Anchor.y0 | (origin & (Anchor.x0 | Anchor.x1 | Anchor.x2)); } return origin; } } }