103 lines
3.6 KiB
C#
103 lines
3.6 KiB
C#
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using System;
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using System.Linq;
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using UnityEngine;
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using UnityEngine.Timeline;
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namespace UnityEditor.Timeline
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{
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class TrimItemModeMix : ITrimItemMode, ITrimItemDrawer
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{
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ITrimmable m_Item;
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double m_Min;
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double m_Max;
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public void OnBeforeTrim(ITrimmable item, TrimEdge trimDirection)
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{
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m_Item = item;
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var sortedItems = ItemsUtils.GetItemsExcept(item.parentTrack, new[] { item })
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.OfType<ITrimmable>()
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.OrderBy(c => c.start);
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var itemStart = (DiscreteTime)item.start;
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var itemEnd = (DiscreteTime)item.end;
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var overlapped = sortedItems.LastOrDefault(c => (DiscreteTime)c.start == itemStart && (DiscreteTime)c.end == itemEnd);
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ITrimmable nextItem;
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ITrimmable prevItem;
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m_Min = 0.0;
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m_Max = double.PositiveInfinity;
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var blendableItem = item as IBlendable;
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if (blendableItem != null && blendableItem.supportsBlending)
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{
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if (trimDirection == TrimEdge.Start)
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{
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nextItem = sortedItems.FirstOrDefault(c => (DiscreteTime)c.start >= itemStart && (DiscreteTime)c.end > itemEnd);
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prevItem = sortedItems.LastOrDefault(c => (DiscreteTime)c.start <= itemStart && (DiscreteTime)c.end < itemEnd);
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if (prevItem != null)
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m_Min = prevItem.start + EditModeUtils.BlendDuration(prevItem, TrimEdge.Start);
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if (nextItem != null)
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m_Max = nextItem.start;
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}
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else
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{
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nextItem = sortedItems.FirstOrDefault(c => c != overlapped && (DiscreteTime)c.start >= itemStart && (DiscreteTime)c.end >= itemEnd);
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prevItem = sortedItems.LastOrDefault(c => c != overlapped && (DiscreteTime)c.start <= itemStart && (DiscreteTime)c.end <= itemEnd);
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if (prevItem != null)
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m_Min = prevItem.end;
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if (nextItem != null)
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m_Max = nextItem.end - EditModeUtils.BlendDuration(nextItem, TrimEdge.End);
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}
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}
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else
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{
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nextItem = sortedItems.FirstOrDefault(c => (DiscreteTime)c.start > itemStart);
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prevItem = sortedItems.LastOrDefault(c => (DiscreteTime)c.start < itemStart);
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if (prevItem != null)
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m_Min = prevItem.end;
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if (nextItem != null)
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m_Max = nextItem.start;
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}
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}
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public void TrimStart(ITrimmable item, double time, bool affectTimeScale)
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{
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time = Math.Min(Math.Max(time, m_Min), m_Max);
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item.SetStart(time, affectTimeScale);
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}
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public void TrimEnd(ITrimmable item, double time, bool affectTimeScale)
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{
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time = Math.Min(Math.Max(time, m_Min), m_Max);
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item.SetEnd(time, affectTimeScale);
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}
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public void DrawGUI(WindowState state, Rect bounds, Color color, TrimEdge edge)
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{
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if (EditModeUtils.HasBlends(m_Item, edge))
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{
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EditModeGUIUtils.DrawBoundsEdge(bounds, color, edge);
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var cursorType = (edge == TrimEdge.End)
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? TimelineCursors.CursorType.MixRight
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: TimelineCursors.CursorType.MixLeft;
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TimelineCursors.SetCursor(cursorType);
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}
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else
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{
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TimelineCursors.ClearCursor();
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}
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}
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}
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}
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