127 lines
3.9 KiB
C#
127 lines
3.9 KiB
C#
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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