mirror of https://github.com/ppy/osu
108 lines
4.0 KiB
C#
108 lines
4.0 KiB
C#
// 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 System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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using osu.Framework.Allocation;
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using osu.Framework.Bindables;
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using osu.Game.Rulesets.Objects;
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using osu.Game.Rulesets.Objects.Types;
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using osu.Game.Rulesets.Osu.Objects;
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using osu.Game.Screens.Edit;
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using osu.Game.Screens.Edit.Compose.Components;
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using osu.Game.Utils;
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using osuTK;
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namespace osu.Game.Rulesets.Osu.Edit
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{
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public partial class OsuSelectionRotationHandler : SelectionRotationHandler
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{
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[Resolved]
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private IEditorChangeHandler? changeHandler { get; set; }
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private BindableList<HitObject> selectedItems { get; } = new BindableList<HitObject>();
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[BackgroundDependencyLoader]
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private void load(EditorBeatmap editorBeatmap)
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{
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selectedItems.BindTo(editorBeatmap.SelectedHitObjects);
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}
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protected override void LoadComplete()
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{
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base.LoadComplete();
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selectedItems.CollectionChanged += (_, __) => updateState();
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updateState();
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}
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private void updateState()
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{
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var quad = GeometryUtils.GetSurroundingQuad(selectedMovableObjects);
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CanRotate.Value = quad.Width > 0 || quad.Height > 0;
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}
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private OsuHitObject[]? objectsInRotation;
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private Vector2? defaultOrigin;
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private Dictionary<OsuHitObject, Vector2>? originalPositions;
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private Dictionary<IHasPath, Vector2[]>? originalPathControlPointPositions;
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public override void Begin()
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{
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if (objectsInRotation != null)
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throw new InvalidOperationException($"Cannot {nameof(Begin)} a rotate operation while another is in progress!");
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changeHandler?.BeginChange();
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objectsInRotation = selectedMovableObjects.ToArray();
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defaultOrigin = GeometryUtils.GetSurroundingQuad(objectsInRotation).Centre;
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originalPositions = objectsInRotation.ToDictionary(obj => obj, obj => obj.Position);
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originalPathControlPointPositions = objectsInRotation.OfType<IHasPath>().ToDictionary(
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obj => obj,
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obj => obj.Path.ControlPoints.Select(point => point.Position).ToArray());
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}
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public override void Update(float rotation, Vector2? origin = null)
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{
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if (objectsInRotation == null)
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throw new InvalidOperationException($"Cannot {nameof(Update)} a rotate operation without calling {nameof(Begin)} first!");
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Debug.Assert(originalPositions != null && originalPathControlPointPositions != null && defaultOrigin != null);
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Vector2 actualOrigin = origin ?? defaultOrigin.Value;
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foreach (var ho in objectsInRotation)
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{
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ho.Position = GeometryUtils.RotatePointAroundOrigin(originalPositions[ho], actualOrigin, rotation);
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if (ho is IHasPath withPath)
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{
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var originalPath = originalPathControlPointPositions[withPath];
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for (int i = 0; i < withPath.Path.ControlPoints.Count; ++i)
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withPath.Path.ControlPoints[i].Position = GeometryUtils.RotatePointAroundOrigin(originalPath[i], Vector2.Zero, rotation);
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}
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}
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}
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public override void Commit()
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{
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if (objectsInRotation == null)
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throw new InvalidOperationException($"Cannot {nameof(Commit)} a rotate operation without calling {nameof(Begin)} first!");
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changeHandler?.EndChange();
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objectsInRotation = null;
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originalPositions = null;
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originalPathControlPointPositions = null;
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defaultOrigin = null;
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}
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private IEnumerable<OsuHitObject> selectedMovableObjects => selectedItems.Cast<OsuHitObject>()
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.Where(h => h is not Spinner);
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}
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}
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