Unity-jump-proj

09.09 Less_unity/Library/PackageCache/com.unity.timeline@1.7.6/Editor/treeview/TimelineClipUnion.cs

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