v1.1.1

* Verified support for 2019.3.6
* Changed several access modifiers from internal to public for inspectors, SceneGUITools helper class.
* Created new preference for view distance; this controls how far from the SceneView camera the orientation handles are drawn and can be a performance enhancement for large splines

Curves/Scripts/Editor/CurvePreferences.cs

@@ -13,25 +13,97 @@ public static class CurvePreferences
 		/// </summary>
 		public static bool IsDebugEnabled
 		{
-			get { return GetBoolPref(ENABLE_DEBUG_PREF, ENABLE_DEBUG_DEFAULT); }
-			set { EditorPrefs.SetBool(ENABLE_DEBUG_PREF, value); }
+			get
+			{
+				if (!_isDebugEnabled.HasValue)
+				{
+					_isDebugEnabled = GetBoolPref(ENABLE_DEBUG_PREF, ENABLE_DEBUG_DEFAULT);
+				}
+
+				return _isDebugEnabled.Value;
+
+			}
+			set
+			{
+				_isDebugEnabled = value;
+
+				EditorPrefs.SetBool(ENABLE_DEBUG_PREF, value);
+			}
 		}
 
 		/// <summary>
 		/// Returns true if rotation visualization info should be enabled, otherwise false.
 		/// </summary>
 		public static bool ShouldVisualizeRotation
 		{
-			get { return GetBoolPref(SHOW_ROTATION_PREF, SHOW_ROTATION_DEFAULT); }
-			set { EditorPrefs.SetBool(SHOW_ROTATION_PREF, value); }
+			get
+			{
+				if(!_shouldVisualizeRotation.HasValue)
+				{
+					_shouldVisualizeRotation = GetBoolPref(SHOW_ROTATION_PREF, SHOW_ROTATION_DEFAULT);
+				}
+
+				return _shouldVisualizeRotation.Value;
+			}
+			set
+			{
+				_shouldVisualizeRotation = value;
+
+				EditorPrefs.SetBool(SHOW_ROTATION_PREF, value);
+			}
 		}
 
+		/// <summary>
+		/// Returns true if handle movement should be mirrored, otherwise false.
+		/// </summary>
 		public static bool ShouldMirrorHandleMovement
 		{
-			get { return GetBoolPref(MIRROR_HANDLE_MOVEMENT_PREF, MIRROR_HANDLE_MOVEMENT_DEFAULT); }
-			set { EditorPrefs.SetBool(MIRROR_HANDLE_MOVEMENT_PREF, value); }
+			get
+			{
+				if (!_shouldMirrorHandleMovement.HasValue)
+				{
+					_shouldMirrorHandleMovement = GetBoolPref(MIRROR_HANDLE_MOVEMENT_PREF, MIRROR_HANDLE_MOVEMENT_DEFAULT);
+				}
+
+				return _shouldMirrorHandleMovement.Value;
+			}
+			set
+			{
+				_shouldMirrorHandleMovement = value;
+
+				EditorPrefs.SetBool(MIRROR_HANDLE_MOVEMENT_PREF, value);
+			}
+		}
+
+		/// <summary>
+		/// The maximum distance from the SceneView camera at which editor graphics should be drawn for the curve before
+		/// being culled.
+		/// </summary>
+		public static float MaximumViewDistance
+		{
+			get
+			{
+				if (!_maximumViewDistance.HasValue)
+				{
+					_maximumViewDistance = GetFloatPref(MAX_VIEW_DISTANCE_PREF, MAX_VIEW_DISTANCE_DEFAULT);
+				}
+
+				return _maximumViewDistance.Value;
+			}
+			set
+			{
+				_maximumViewDistance = value;
+
+				EditorPrefs.SetFloat(MAX_VIEW_DISTANCE_PREF, value);
+			}
 		}
 
+		// Caching layer
+		private static bool? _isDebugEnabled;
+		private static bool? _shouldVisualizeRotation;
+		private static bool? _shouldMirrorHandleMovement;
+		private static float? _maximumViewDistance;
+
 		// UI
 		private const string PREFERENCES_TITLE_PATH = "Preferences/JCMG Curves";
 		private const string USER_PREFERENCES_HEADER = "User Preferences";
@@ -49,10 +121,12 @@ public static bool ShouldMirrorHandleMovement
 		private const string SHOW_ROTATION_PREF = "JCMG.Curves.ShowRotationVisualization";
 		private const string ENABLE_DEBUG_PREF = "JCMG.Curves.EnableDebug";
 		private const string MIRROR_HANDLE_MOVEMENT_PREF = "JCMG.Curves.MirrorHandleMovement";
+		private const string MAX_VIEW_DISTANCE_PREF = "JCMG.Curves.MaximumViewDistance";
 
 		private const bool SHOW_ROTATION_DEFAULT = true;
 		private const bool ENABLE_DEBUG_DEFAULT = true;
 		private const bool MIRROR_HANDLE_MOVEMENT_DEFAULT = true;
+		private const float MAX_VIEW_DISTANCE_DEFAULT = 200f;
 
 		static CurvePreferences()
 		{
@@ -131,6 +205,25 @@ private static void DrawPersonalPrefsGUI(string value = "")
 					SceneView.RepaintAll();
 				}
 			}
+
+			// Max View Distance
+			EditorGUILayout.Space();
+			EditorGUILayout.HelpBox(
+				"The maximum distance at which the curve orientation and other secondary graphics will be drawn in the " +
+				"SceneView.",
+				MessageType.Info);
+
+			GUI.changed = false;
+			using (new EditorGUILayout.HorizontalScope())
+			{
+				EditorGUILayout.LabelField("Maximum View Distance", MAX_WIDTH);
+				var newViewDistance = Mathf.Max(0, EditorGUILayout.FloatField(MaximumViewDistance, MAX_WIDTH));
+				if (GUI.changed)
+				{
+					MaximumViewDistance = newViewDistance;
+					SceneView.RepaintAll();
+				}
+			}
 		}
 
 		/// <summary>
@@ -148,5 +241,21 @@ private static bool GetBoolPref(string key, bool defaultValue)
 
 			return EditorPrefs.GetBool(key);
 		}
+
+		/// <summary>
+		/// Returns the current float preference; if none exists, the default is set and returned.
+		/// </summary>
+		/// <param name="key"></param>
+		/// <param name="defaultValue"></param>
+		/// <returns></returns>
+		private static float GetFloatPref(string key, float defaultValue)
+		{
+			if (!EditorPrefs.HasKey(key))
+			{
+				EditorPrefs.SetFloat(key, defaultValue);
+			}
+
+			return EditorPrefs.GetFloat(key);
+		}
 	}
 }

Curves/Scripts/Editor/Inspectors/Bezier3DSplineDataInspector.cs

@@ -5,7 +5,7 @@
 namespace JCMG.Curves.Editor
 {
 	[CustomEditor(typeof(Bezier3DSplineData))]
-	internal sealed class Bezier3DSplineDataInspector : UnityEditor.Editor
+	public sealed class Bezier3DSplineDataInspector : UnityEditor.Editor
 	{
 		/// <summary>
 		/// Get or sets whether or not this inspector should be drawing the scene GUI. Default is true.
@@ -32,7 +32,7 @@ public bool ShouldDrawSceneGUI
 		}
 
 		#pragma warning disable 0649
-		public static event Action<IReadOnly3DSplineData> SplineUpdated;
+		public event Action<IReadOnly3DSplineData> SplineUpdated;
 		#pragma warning restore 0649
 
 		private bool _shouldDrawSceneGUI;

Curves/Scripts/Editor/Inspectors/Bezier3DSplineInspector.cs

@@ -4,10 +4,10 @@
 namespace JCMG.Curves.Editor
 {
 	[CustomEditor(typeof(Bezier3DSpline))]
-	internal sealed class Bezier3DSplineInspector : UnityEditor.Editor
+	public sealed class Bezier3DSplineInspector : UnityEditor.Editor
 	{
 		#pragma warning disable 0649
-		public static event Action<IReadOnly3DSplineData> SplineUpdated;
+		public event Action<IReadOnly3DSplineData> SplineUpdated;
 		#pragma warning restore 0649
 
 		private Bezier3DSpline _spline;

Curves/Scripts/Editor/Tools/SceneGUITools.cs

@@ -7,7 +7,7 @@ namespace JCMG.Curves.Editor
 	/// <summary>
 	/// Helper methods for drawing in the scene
 	/// </summary>
-	internal static class SceneGUITools
+	public static class SceneGUITools
 	{
 		public static void DrawCurveLinesHandles(IBezier3DSplineData splineData, Transform transform = null)
 		{
@@ -61,10 +61,18 @@ public static void DrawCurveLinesHandles(IBezier3DSplineData splineData, Transfo
 
 		public static void DrawCurveOrientations(IBezier3DSplineData splineData)
 		{
+			var sceneViewCameraPosition = SceneView.lastActiveSceneView.camera.transform.position;
+			var maxViewDistance = CurvePreferences.MaximumViewDistance;
+
 			for (var dist = 0f; dist < splineData.TotalLength; dist += 1)
 			{
 				var point = splineData.GetPosition(dist);
 
+				if (Vector3.Distance(sceneViewCameraPosition, point) > maxViewDistance)
+				{
+					continue;
+				}
+
 				// Draw Up Vector
 				var up = splineData.GetUp(dist);
 				Handles.color = Handles.yAxisColor;

Curves/Scripts/Tools/SceneGUITools.cs

@@ -5,7 +5,7 @@ namespace JCMG.Curves
 	/// <summary>
 	/// Helper methods for drawing in the scene
 	/// </summary>
-	internal static class SceneGUITools
+	public static class SceneGUITools
 	{
 		public static void DrawCurveLinesGizmos(IBezier3DSplineData splineData, Transform transform = null)
 		{

package.json

@@ -1 +1 @@
-{"name":"com.jeffcampbellmakesgames.curves","displayName":"JCMG Curves","version":"1.0.0","unity":"2019.3","description":"JCMG Curves is a 3D Bezier curve library focused on ease of use in both its API and Unity Editor integration.","keywords":["Curve","Curves"],"category":""}
+{"name":"com.jeffcampbellmakesgames.curves","displayName":"JCMG Curves","version":"1.1.0","unity":"2019.3","description":"JCMG Curves is a 3D Bezier curve library focused on ease of use in both its API and Unity Editor integration.","keywords":["Curve","Curves"],"category":""}