Added previousPoint and nextPoint helper properties to BezierPoint

Author: yasirkula

.github/README.md

@@ -79,7 +79,7 @@ End points have the following properties to store their transformational data: `
 
 Positions of control points can be tweaked using the following properties in BezierPoint: `precedingControlPointPosition`, `precedingControlPointLocalPosition`, `followingControlPointPosition` and `followingControlPointLocalPosition`. The local positions are relative to their corresponding end points.
 
-End points also have read-only `spline` and `index` properties.
+End points also have read-only `spline`, `index`, `previousPoint` and `nextPoint` properties.
 
 ```csharp
 // Set first end point's (world) position to 2,3,5

Plugins/BezierSolution/BezierPoint.cs

@@ -309,6 +309,38 @@ public ExtraData extraData
 		public BezierSpline spline { get; internal set; }
 		public int index { get; internal set; }
 
+		public BezierPoint previousPoint
+		{
+			get
+			{
+				if( spline )
+				{
+					if( index > 0 )
+						return spline.endPoints[index - 1];
+					else if( spline.loop )
+						return spline.endPoints[spline.endPoints.Count - 1];
+				}
+
+				return null;
+			}
+		}
+
+		public BezierPoint nextPoint
+		{
+			get
+			{
+				if( spline )
+				{
+					if( index < spline.endPoints.Count - 1 )
+						return spline.endPoints[index + 1];
+					else if( spline.loop )
+						return spline.endPoints[0];
+				}
+
+				return null;
+			}
+		}
+
 		private void Awake()
 		{
 			transform.hasChanged = true;