将Spline移出Plugin，以调整SplineRenderer的OnWillCameraRender

Assets/Dreamteck/Splines/Components/EdgeColliderGenerator.cs

@@ -0,0 +1,120 @@
+using UnityEngine;
+using System.Collections;
+using System.Threading;
+namespace Dreamteck.Splines
+{
+    [AddComponentMenu("Dreamteck/Splines/Users/Edge Collider Generator")]
+    [RequireComponent(typeof(EdgeCollider2D))]
+    public class EdgeColliderGenerator : SplineUser
+    {
+        public float offset
+        {
+            get { return _offset; }
+            set
+            {
+                if (value != _offset)
+                {
+                    _offset = value;
+                    Rebuild();
+                }
+            }
+        }
+
+        [SerializeField]
+        [HideInInspector]
+        private float _offset = 0f;
+        [SerializeField]
+        [HideInInspector]
+        protected EdgeCollider2D edgeCollider;
+
+        [SerializeField]
+        [HideInInspector]
+        protected Vector2[] vertices = new Vector2[0];
+
+        [HideInInspector]
+        public float updateRate = 0.1f;
+        protected float lastUpdateTime = 0f;
+
+        private bool updateCollider = false;
+
+        protected override void Awake()
+        {
+            base.Awake();
+            edgeCollider = GetComponent<EdgeCollider2D>();
+        }
+
+
+        protected override void Reset()
+        {
+            base.Reset();
+        }
+
+        protected override void OnEnable()
+        {
+            base.OnEnable();
+        }
+
+        protected override void OnDisable()
+        {
+            base.OnDisable();
+        }
+
+        protected override void OnDestroy()
+        {
+            base.OnDestroy();
+        }
+
+        protected override void LateRun()
+        {
+            base.LateRun();
+            if (updateCollider)
+            {
+                if (edgeCollider != null)
+                {
+                    if (Time.time - lastUpdateTime >= updateRate)
+                    {
+                        lastUpdateTime = Time.time;
+                        updateCollider = false;
+                        edgeCollider.points = vertices;
+                    }
+                }
+            }
+        }
+
+        protected override void Build()
+        {
+            base.Build();
+            if (vertices.Length != sampleCount) vertices = new Vector2[sampleCount];
+            bool hasOffset = offset != 0f;
+            for (int i = 0; i < sampleCount; i++)
+            {
+                GetSample(i, ref evalResult);
+                vertices[i] = evalResult.position;
+                if (hasOffset)
+                {
+                    Vector2 right = new Vector2(-evalResult.forward.y, evalResult.forward.x).normalized * evalResult.size;
+                    vertices[i] += right * offset;
+                }
+            }
+        }
+
+        protected override void PostBuild()
+        {
+            base.PostBuild();
+            if (edgeCollider == null) return;
+            for(int i = 0; i < vertices.Length; i++) vertices[i] = transform.InverseTransformPoint(vertices[i]);
+            
+#if UNITY_EDITOR
+            if (!Application.isPlaying || updateRate <= 0f)
+            {
+                edgeCollider.points = vertices;
+            } else updateCollider = true;
+#else
+            if(updateRate == 0f) edgeCollider.points = vertices;
+            else updateCollider = true;
+#endif
+        }
+    }
+
+  
+}