wehub-resource-sync
66 lines
1.8 KiB
C#
66 lines
1.8 KiB
C#
#nullable enable
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using System.Collections;
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using T3.Core.Animation;
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namespace T3.Editor.Gui.Interaction.WithCurves;
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/// <summary>
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/// A set of selected keyframe <see cref="VDefinition"/>s that bumps <see cref="ChangeCounter"/>
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/// on every mutation. Downstream UI caches can compare the counter instead of rehashing the set.
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/// Mirrors the <c>HashSet</c>-style API used across the codebase so call sites stay unchanged.
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/// </summary>
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internal sealed class VersionedKeyframeSet : IEnumerable<VDefinition>
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{
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public int ChangeCounter { get; private set; }
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public int Count => _set.Count;
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public bool Contains(VDefinition v) => _set.Contains(v);
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public bool Add(VDefinition v)
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{
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if (!_set.Add(v))
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return false;
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ChangeCounter++;
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return true;
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}
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public bool Remove(VDefinition v)
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{
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if (!_set.Remove(v))
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return false;
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ChangeCounter++;
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return true;
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}
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public void Clear()
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{
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if (_set.Count == 0)
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return;
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_set.Clear();
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ChangeCounter++;
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}
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public void UnionWith(IEnumerable<VDefinition> other)
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{
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var before = _set.Count;
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_set.UnionWith(other);
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if (_set.Count != before)
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ChangeCounter++;
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}
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public void ExceptWith(IEnumerable<VDefinition> other)
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{
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var before = _set.Count;
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_set.ExceptWith(other);
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if (_set.Count != before)
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ChangeCounter++;
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}
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public HashSet<VDefinition>.Enumerator GetEnumerator() => _set.GetEnumerator();
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IEnumerator<VDefinition> IEnumerable<VDefinition>.GetEnumerator() => _set.GetEnumerator();
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IEnumerator IEnumerable.GetEnumerator() => _set.GetEnumerator();
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private readonly HashSet<VDefinition> _set = [];
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}
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