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Code Issues Releases Wiki Activity

Implemented KeepUpright

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HiddenNode 2022-08-01 21:46:01 +01:00
parent c0e5f11c90
commit bc059cc1d2
1 changed files with 20 additions and 0 deletions
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20
osu.Game/Extensions/DrawableExtensions.cs
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@ -8,6 +8,7 @@ using osu.Game.Configuration;
using osu.Game.Screens.Play.HUD; using osu.Game.Screens.Play.HUD;
using osu.Game.Skinning; using osu.Game.Skinning;
using osuTK; using osuTK;
using System;
namespace osu.Game.Extensions namespace osu.Game.Extensions
{ {
@ -79,5 +80,24 @@ namespace osu.Game.Extensions
container.Add(child.CreateInstance()); container.Add(child.CreateInstance());
} }
} }
/// <summary>
/// Keeps the drawable upright no matter the Rotation of its parents.
/// </summary>
/// <param name="drawable">The drawable.</param>
public static void KeepUpright(this Drawable drawable)
{
var result = drawable.Parent.DrawInfo;
var scale = result.Matrix.ExtractScale();
var rotation = new Matrix3(
result.Matrix.Row0 / scale.X,
result.Matrix.Row1 / scale.Y,
new Vector3(0.0f, 0.0f, 1.0f)
);
float angle = MathF.Atan2(rotation.M12, rotation.M11);
angle *= (360 / (2 * MathF.PI));
drawable.Rotation = -angle;
}
} }
} }