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Assets/Plugins/RootMotion/Editor/FinalIK/RotationLimitInspector.cs

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+using UnityEditor;
+using UnityEngine;
+using System.Collections;
+
+namespace RootMotion.FinalIK
+{
+
+    /*
+	 * Base class for all RotationLimitInspector containing common helper methods and drawing instructions
+	 * */
+    public class RotationLimitInspector : Editor
+    {
+
+        #region Public methods
+
+        // Universal color pallettes
+        public static Color colorDefault { get { return new Color(0.0f, 1.0f, 1.0f, 1.0f); } }
+
+        public static Color colorDefaultTransparent
+        {
+            get
+            {
+                Color d = colorDefault;
+                return new Color(d.r, d.g, d.b, 0.2f);
+            }
+        }
+
+        public static Color colorHandles { get { return new Color(1.0f, 0.5f, 0.25f, 1.0f); } }
+        public static Color colorRotationSphere { get { return new Color(1.0f, 1.0f, 1.0f, 0.1f); } }
+        public static Color colorInvalid { get { return new Color(1.0f, 0.3f, 0.3f, 1.0f); } }
+        public static Color colorValid { get { return new Color(0.2f, 1.0f, 0.2f, 1.0f); } }
+
+        /*
+		 * Draws the default rotation limit sphere to the scene
+		 * */
+        public static void DrawRotationSphere(Vector3 position)
+        {
+            Handles.color = colorRotationSphere;
+            Inspector.SphereCap(0, position, Quaternion.identity, 2.0f);
+            Handles.color = Color.white;
+        }
+
+        /*
+		 * Draws a custom arrow to the scene
+		 * */
+        public static void DrawArrow(Vector3 position, Vector3 direction, Color color, string label = "", float size = 0.01f)
+        {
+            Handles.color = color;
+            Handles.DrawLine(position, position + direction);
+            Inspector.SphereCap(0, position + direction, Quaternion.identity, size);
+            Handles.color = Color.white;
+
+            if (label != "")
+            {
+                GUI.color = color;
+                Handles.Label(position + direction, label);
+                GUI.color = Color.white;
+            }
+        }
+
+        /*
+		 * Draws a handle for adjusting rotation limits in the scene
+		 * */
+        public static float DrawLimitHandle(float limit, Vector3 position, Quaternion rotation, float radius, string label, float openingValue)
+        {
+            limit = Inspector.ScaleValueHandleSphere(limit, position, rotation, radius, 1);
+
+            string labelInfo = label + ": " + limit.ToString();
+
+            // If value is 0, draw a button to 'open' the value, because we cant scale 0
+            if (limit == 0)
+            {
+                labelInfo = "Open " + label;
+
+                if (Inspector.SphereButton(position, rotation, radius * 0.2f, radius * 0.07f))
+                {
+                    limit = openingValue;
+                }
+            }
+
+            Handles.Label(position, labelInfo);
+
+            return limit;
+        }
+
+        #endregion
+    }
+}