Merge pull request #253 from Santarh/springBoneColliderGroupUtilities

Add utility menu for VRMSpringBoneColliderGroup.

Assets/VRM/UniVRM/Editor/SpringBone/VRMSpringBoneColliderGroupEditor.cs

@@ -1,4 +1,5 @@
-using UnityEditor;
+using System.Linq;
+using UnityEditor;
 using UnityEngine;
 
 
@@ -38,5 +39,43 @@ private void OnSceneGUI()
                 EditorUtility.SetDirty(m_target);
             }
         }
+
+        [MenuItem("CONTEXT/VRMSpringBoneColliderGroup/X Mirror")]
+        private static void InvertOffsetX(MenuCommand command)
+        {
+            var target = command.context as VRMSpringBoneColliderGroup;
+            if (target == null) return;
+
+            Undo.RecordObject(target, "X Mirror");
+
+            foreach (var sphereCollider in target.Colliders)
+            {
+                var offset = sphereCollider.Offset;
+                offset.x *= -1f;
+                sphereCollider.Offset = offset;
+            }
+        }
+
+        [MenuItem("CONTEXT/VRMSpringBoneColliderGroup/Sort Colliders by Radius")]
+        private static void SortByRadius(MenuCommand command)
+        {
+            var target = command.context as VRMSpringBoneColliderGroup;
+            if (target == null) return;
+
+            Undo.RecordObject(target, "Sort Colliders by Radius");
+
+            target.Colliders = target.Colliders.OrderBy(x => -x.Radius).ToArray();
+        }
+
+        [MenuItem("CONTEXT/VRMSpringBoneColliderGroup/Sort Colliders by Offset Y")]
+        private static void SortByOffsetY(MenuCommand command)
+        {
+            var target = command.context as VRMSpringBoneColliderGroup;
+            if (target == null) return;
+
+            Undo.RecordObject(target, "Sort Colliders by Offset Y");
+
+            target.Colliders = target.Colliders.OrderBy(x => -x.Offset.y).ToArray();
+        }
     }
 }