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126 lines
3.9 KiB
126 lines
3.9 KiB
using System.Collections.Generic; |
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using System.Linq; |
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using UnityEditorInternal; |
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using UnityEngine; |
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namespace UnityEditor.Timeline |
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{ |
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class TimelineClipUnion |
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{ |
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List<TimelineClipGUI> m_Members = new List<TimelineClipGUI>(); |
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Rect m_BoundingRect; |
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Rect m_Union; |
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double m_Start; |
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double m_Duration; |
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bool m_InitUnionRect = true; |
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void Add(TimelineClipGUI clip) |
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{ |
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m_Members.Add(clip); |
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if (m_Members.Count == 1) |
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{ |
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m_BoundingRect = clip.clippedRect; |
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} |
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else |
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{ |
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m_BoundingRect = Encompass(m_BoundingRect, clip.rect); |
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} |
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} |
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public void Draw(Rect parentRect, WindowState state) |
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{ |
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if (m_InitUnionRect) |
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{ |
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m_Start = m_Members.OrderBy(c => c.clip.start).First().clip.start; |
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m_Duration = m_Members.Sum(c => c.clip.duration); |
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m_InitUnionRect = false; |
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} |
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m_Union = new Rect((float)(m_Start) * state.timeAreaScale.x, 0, (float)m_Duration * state.timeAreaScale.x, 0); |
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// transform clipRect into pixel-space |
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m_Union.xMin += state.timeAreaTranslation.x + parentRect.x; |
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m_Union.xMax += state.timeAreaTranslation.x + parentRect.x; |
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m_Union.y = parentRect.y + 4.0f; |
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m_Union.height = parentRect.height - 8.0f; |
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// calculate clipped rect |
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if (m_Union.x < parentRect.xMin) |
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{ |
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var overflow = parentRect.xMin - m_Union.x; |
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m_Union.x = parentRect.xMin; |
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m_Union.width -= overflow; |
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} |
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// bail out if completely clipped |
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if (m_Union.xMax < parentRect.xMin) |
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return; |
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if (m_Union.xMin > parentRect.xMax) |
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return; |
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EditorGUI.DrawRect(m_Union, DirectorStyles.Instance.customSkin.colorClipUnion); |
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} |
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public static List<TimelineClipUnion> Build(List<TimelineClipGUI> clips) |
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{ |
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var unions = new List<TimelineClipUnion>(); |
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if (clips == null) |
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return unions; |
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TimelineClipUnion currentUnion = null; |
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foreach (var c in clips) |
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{ |
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if (currentUnion == null) |
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{ |
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currentUnion = new TimelineClipUnion(); |
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currentUnion.Add(c); |
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unions.Add(currentUnion); |
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} |
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else |
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{ |
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Rect result; |
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if (Intersection(c.rect, currentUnion.m_BoundingRect, out result)) |
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{ |
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currentUnion.Add(c); |
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} |
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else |
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{ |
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currentUnion = new TimelineClipUnion(); |
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currentUnion.Add(c); |
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unions.Add(currentUnion); |
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} |
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} |
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} |
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return unions; |
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} |
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public static Rect Encompass(Rect a, Rect b) |
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{ |
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Rect newRect = a; |
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newRect.xMin = Mathf.Min(a.xMin, b.xMin); |
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newRect.yMin = Mathf.Min(a.yMin, b.yMin); |
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newRect.xMax = Mathf.Max(a.xMax, b.xMax); |
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newRect.yMax = Mathf.Max(a.yMax, b.yMax); |
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return newRect; |
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} |
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public static bool Intersection(Rect r1, Rect r2, out Rect intersection) |
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{ |
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if (!r1.Overlaps(r2) && !r2.Overlaps(r1)) |
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{ |
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intersection = new Rect(0, 0, 0, 0); |
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return false; |
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} |
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float left = Mathf.Max(r1.xMin, r2.xMin); |
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float top = Mathf.Max(r1.yMin, r2.yMin); |
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float right = Mathf.Min(r1.xMax, r2.xMax); |
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float bottom = Mathf.Min(r1.yMax, r2.yMax); |
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intersection = new Rect(left, top, right - left, bottom - top); |
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return true; |
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} |
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} |
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}
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