84 lines
3.1 KiB
C#
84 lines
3.1 KiB
C#
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using System;
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namespace UnityEngine.Timeline
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{
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static class BlendUtility
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{
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static readonly double kMinOverlapTime = TimeUtility.kTimeEpsilon * 1000;
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static bool Overlaps(TimelineClip blendOut, TimelineClip blendIn)
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{
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if (blendIn == blendOut)
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return false;
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if (Math.Abs(blendIn.start - blendOut.start) < TimeUtility.kTimeEpsilon)
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{
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return blendIn.duration >= blendOut.duration;
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}
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return blendIn.start >= blendOut.start && blendIn.start < blendOut.end;
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}
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public static void ComputeBlendsFromOverlaps(TimelineClip[] clips)
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{
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foreach (var clip in clips)
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{
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clip.blendInDuration = -1;
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clip.blendOutDuration = -1;
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}
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Array.Sort(clips, (c1, c2) =>
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Math.Abs(c1.start - c2.start) < TimeUtility.kTimeEpsilon ? c1.duration.CompareTo(c2.duration) : c1.start.CompareTo(c2.start));
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for (var i = 0; i < clips.Length; i++)
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{
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var clip = clips[i];
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if (!clip.SupportsBlending())
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continue;
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var blendIn = clip;
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TimelineClip blendOut = null;
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var blendOutCandidate = clips[Math.Max(i - 1, 0)];
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if (Overlaps(blendOutCandidate, blendIn))
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blendOut = blendOutCandidate;
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if (blendOut != null)
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{
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UpdateClipIntersection(blendOut, blendIn);
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}
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}
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}
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static void UpdateClipIntersection(TimelineClip blendOutClip, TimelineClip blendInClip)
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{
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if (!blendOutClip.SupportsBlending() || !blendInClip.SupportsBlending())
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return;
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if (blendInClip.start - blendOutClip.start < blendOutClip.duration - blendInClip.duration)
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return;
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double duration = Math.Max(0, blendOutClip.start + blendOutClip.duration - blendInClip.start);
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duration = duration <= kMinOverlapTime ? 0 : duration;
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blendOutClip.blendOutDuration = duration;
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blendInClip.blendInDuration = duration;
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var blendInMode = blendInClip.blendInCurveMode;
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var blendOutMode = blendOutClip.blendOutCurveMode;
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if (blendInMode == TimelineClip.BlendCurveMode.Manual && blendOutMode == TimelineClip.BlendCurveMode.Auto)
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{
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blendOutClip.mixOutCurve = CurveEditUtility.CreateMatchingCurve(blendInClip.mixInCurve);
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}
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else if (blendInMode == TimelineClip.BlendCurveMode.Auto && blendOutMode == TimelineClip.BlendCurveMode.Manual)
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{
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blendInClip.mixInCurve = CurveEditUtility.CreateMatchingCurve(blendOutClip.mixOutCurve);
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}
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else if (blendInMode == TimelineClip.BlendCurveMode.Auto && blendOutMode == TimelineClip.BlendCurveMode.Auto)
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{
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blendInClip.mixInCurve = null; // resets to default curves
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blendOutClip.mixOutCurve = null;
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}
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}
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}
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}
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