osu/osu.Game/Rulesets/Edit/IPositionSnapProvider.cs

32 lines
1.5 KiB
C#

// 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.
using osuTK;
namespace osu.Game.Rulesets.Edit
{
/// <summary>
/// A snap provider which given a proposed position for a hit object, potentially offers a more correct position and time value inferred from the context of the beatmap.
/// Provided values are inferred in an isolated context, without consideration of other nearby hit objects.
/// </summary>
public interface IPositionSnapProvider
{
/// <summary>
/// Given a position, find a valid time and position snap.
/// </summary>
/// <remarks>
/// This call should be equivalent to running <see cref="FindSnappedPosition"/> with any additional logic that can be performed without the time immutability restriction.
/// </remarks>
/// <param name="screenSpacePosition">The screen-space position to be snapped.</param>
/// <returns>The time and position post-snapping.</returns>
SnapResult FindSnappedPositionAndTime(Vector2 screenSpacePosition);
/// <summary>
/// Given a position, find a value position snap, restricting time to its input value.
/// </summary>
/// <param name="screenSpacePosition">The screen-space position to be snapped.</param>
/// <returns>The position post-snapping. Time will always be null.</returns>
SnapResult FindSnappedPosition(Vector2 screenSpacePosition);
}
}