From 63795c45af9ecca5aea36fbe291b18fcd9fb9b7d Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Fri, 18 Feb 2022 14:38:20 +0800
Subject: *rename folder name

---
 .../JamUtils/Scripts/Utils/ColliderUtility.cs      | 59 ++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 JamHelper/Assets/JamUtils/Scripts/Utils/ColliderUtility.cs

(limited to 'JamHelper/Assets/JamUtils/Scripts/Utils/ColliderUtility.cs')

diff --git a/JamHelper/Assets/JamUtils/Scripts/Utils/ColliderUtility.cs b/JamHelper/Assets/JamUtils/Scripts/Utils/ColliderUtility.cs
new file mode 100644
index 0000000..3efe155
--- /dev/null
+++ b/JamHelper/Assets/JamUtils/Scripts/Utils/ColliderUtility.cs
@@ -0,0 +1,59 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace JamTools
+{
+
+    public static class ColliderUtility
+    {
+        private static readonly List<Vector3> s_Vertices = new List<Vector3>();
+
+        private static readonly List<int> s_Triangles = new List<int>();
+
+        private static Plane GetWorldTriangle(Transform collider, int index)
+        {
+            Vector3 position = ColliderUtility.s_Vertices[ColliderUtility.s_Triangles[3 * index]];
+            Vector3 position2 = ColliderUtility.s_Vertices[ColliderUtility.s_Triangles[3 * index + 1]];
+            Vector3 position3 = ColliderUtility.s_Vertices[ColliderUtility.s_Triangles[3 * index + 2]];
+            return new Plane(collider.TransformPoint(position), collider.TransformPoint(position2), collider.TransformPoint(position3));
+        }
+
+        public static Vector3 FindClosestPoint(Collider collider, Vector3 position)
+        {
+            return ColliderUtility.FindClosestPoint(collider, position, false);
+        }
+
+        public static Vector3 FindClosestPoint(Collider collider, Vector3 position, bool ignoreVerticalTriangles)
+        {
+            MeshCollider meshCollider;
+            if ((meshCollider = (collider as MeshCollider)) != null && !meshCollider.convex)
+            {
+                Mesh sharedMesh = meshCollider.sharedMesh;
+                sharedMesh.GetVertices(ColliderUtility.s_Vertices);
+                Plane plane = default(Plane);
+                float num = float.PositiveInfinity;
+                for (int i = 0; i < sharedMesh.subMeshCount; i++)
+                {
+                    sharedMesh.GetTriangles(ColliderUtility.s_Triangles, i);
+                    int j = 0;
+                    int num2 = ColliderUtility.s_Triangles.Count / 3;
+                    while (j < num2)
+                    {
+                        Plane worldTriangle = ColliderUtility.GetWorldTriangle(meshCollider.transform, j);
+                        float num3 = Mathf.Abs(worldTriangle.GetDistanceToPoint(position));
+                        if ((!ignoreVerticalTriangles || (!(worldTriangle.normal == Vector3.up) && !(worldTriangle.normal == Vector3.down))) && ((i == 0 && j == 0) || num3 < num))
+                        {
+                            plane = worldTriangle;
+                            num = num3;
+                        }
+                        j++;
+                    }
+                }
+                return plane.ClosestPointOnPlane(position);
+            }
+            return collider.ClosestPoint(position);
+        }
+    }
+
+}
-- 
cgit v1.1-26-g67d0