98 lines
3.2 KiB
C#
98 lines
3.2 KiB
C#
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 TrimItemModeRipple : ITrimItemMode, ITrimItemDrawer
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{
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double m_OriginalClipStart;
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double m_OriginalClipEnd;
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ITrimmable[] m_NextItems;
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double m_BlendDuration;
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double m_TrimStartShift;
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public void OnBeforeTrim(ITrimmable item, TrimEdge trimDirection)
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{
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m_OriginalClipStart = item.start;
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m_OriginalClipEnd = item.end;
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m_TrimStartShift = 0.0;
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var sortedClips = 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 clipStart = (DiscreteTime)item.start;
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var clipEnd = (DiscreteTime)item.end;
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m_NextItems = sortedClips.Where(c => (DiscreteTime)c.start >= clipStart && (DiscreteTime)c.end >= clipEnd).ToArray();
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var overlapped = sortedClips.LastOrDefault(c => (DiscreteTime)c.start == clipStart && (DiscreteTime)c.end == clipEnd);
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if (overlapped != null)
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{
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m_BlendDuration = overlapped.end - overlapped.start;
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}
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else
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{
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m_BlendDuration = 0.0;
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var prevClip = sortedClips.LastOrDefault(c => (DiscreteTime)c.start <= clipStart && (DiscreteTime)c.end <= clipEnd);
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if (prevClip != null)
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m_BlendDuration += Math.Max(prevClip.end - item.start, 0.0);
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var nextClip = sortedClips.FirstOrDefault(c => (DiscreteTime)c.start >= clipStart && (DiscreteTime)c.end >= clipEnd);
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if (nextClip != null)
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m_BlendDuration += Math.Max(item.end - nextClip.start, 0.0);
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}
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}
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public void TrimStart(ITrimmable item, double time)
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{
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var prevEnd = item.end;
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// HACK If time is negative, make sure we shift the SetStart operation to a positive space.
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if (time < 0.0)
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m_TrimStartShift = Math.Max(-time, m_TrimStartShift);
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item.start = m_OriginalClipEnd - item.duration + m_TrimStartShift;
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time += m_TrimStartShift;
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if (m_BlendDuration > 0.0)
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time = Math.Min(time, item.end - m_BlendDuration);
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item.SetStart(time);
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item.start = m_OriginalClipStart;
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var offset = item.end - prevEnd;
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foreach (var timelineClip in m_NextItems)
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timelineClip.start += offset;
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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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var prevEnd = item.end;
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if (m_BlendDuration > 0.0)
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time = Math.Max(time, item.start + m_BlendDuration);
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item.SetEnd(time, affectTimeScale);
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var offset = item.end - prevEnd;
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foreach (var timelineClip in m_NextItems)
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timelineClip.start += offset;
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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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EditModeGUIUtils.DrawBoundsEdge(bounds, color, edge);
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TimelineCursors.SetCursor(TimelineCursors.CursorType.Ripple);
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}
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}
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}
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