109 lines
3.9 KiB
C#
109 lines
3.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using UnityEngine.Timeline;
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namespace UnityEditor.Timeline
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{
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static class EditModeRippleUtils
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{
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public static void Insert(IEnumerable<ItemsPerTrack> itemsGroups)
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{
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var start = double.MaxValue;
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var end = double.MinValue;
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foreach (var itemsGroup in itemsGroups)
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{
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start = Math.Min(start, itemsGroup.items.Min(c => c.start));
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end = Math.Max(end, itemsGroup.items.Max(c => c.end));
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}
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var offset = 0.0;
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var discreteStart = (DiscreteTime)start;
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var discreteEnd = (DiscreteTime)end;
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var itemTypes = ItemsUtils.GetItemTypes(itemsGroups);
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var siblingsToRipple = new List<ITimelineItem>();
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foreach (var itemsGroup in itemsGroups)
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{
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//can only ripple items of the same type as those selected
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siblingsToRipple.AddRange(ItemsUtils.GetItemsExcept(itemsGroup.targetTrack, itemsGroup.items).Where(i => itemTypes.Contains(i.GetType())));
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foreach (var item in siblingsToRipple)
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{
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var discreteItemStart = (DiscreteTime)item.start;
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var discreteItemEnd = (DiscreteTime)item.end;
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if ((discreteItemStart < discreteStart && discreteItemEnd > discreteStart) || (discreteItemStart >= discreteStart && discreteItemStart < discreteEnd))
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offset = Math.Max(offset, end - item.start);
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}
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}
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if (offset > 0.0)
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{
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foreach (var sibling in siblingsToRipple)
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{
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if ((DiscreteTime)sibling.end > (DiscreteTime)start)
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sibling.start += offset;
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}
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}
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}
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public static void Remove(IEnumerable<ItemsPerTrack> itemsGroups)
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{
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foreach (var itemsGroup in itemsGroups)
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Remove(itemsGroup.targetTrack, itemsGroup.items);
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}
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static void Remove(TrackAsset track, IEnumerable<ITimelineItem> items)
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{
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if (track == null) return;
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//can only ripple items of the same type as those selected
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var itemTypes = ItemsUtils.GetItemTypes(items);
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var siblingsToRipple = ItemsUtils.GetItemsExcept(track, items)
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.Where(i => itemTypes.Contains(i.GetType()))
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.OrderBy(c => c.start)
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.ToArray();
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var orderedItems = items
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.OrderBy(c => c.start)
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.ToArray();
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var cumulativeOffset = 0.0;
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foreach (var item in orderedItems)
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{
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var offset = item.end - item.start;
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var start = item.start - cumulativeOffset;
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var end = item.end - cumulativeOffset;
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var nextItem = siblingsToRipple.FirstOrDefault(c => (DiscreteTime)c.start > (DiscreteTime)start && (DiscreteTime)c.start < (DiscreteTime)end);
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if (nextItem != null)
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{
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offset -= end - nextItem.start;
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}
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var prevItem = siblingsToRipple.FirstOrDefault(c => (DiscreteTime)c.end > (DiscreteTime)start && (DiscreteTime)c.end < (DiscreteTime)end);
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if (prevItem != null)
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{
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offset -= prevItem.end - start;
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}
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if (offset <= 0.0)
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continue;
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cumulativeOffset += offset;
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for (int i = siblingsToRipple.Length - 1; i >= 0; --i)
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{
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var c = siblingsToRipple[i];
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if ((DiscreteTime)c.start < (DiscreteTime)start)
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break;
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c.start = c.start - offset;
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}
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}
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}
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}
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}
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