From 83843f4bbc063b2a093613596ca7bb3398aa4e06 Mon Sep 17 00:00:00 2001
From: Brice Vandemoortele <brice@starberry.games>
Date: Wed, 30 Sep 2020 10:48:16 +0200
Subject: [PATCH] applyWindowCulling condition to skip edge rendering

---
 Scripts/Editor/NodeEditorGUI.cs | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/Scripts/Editor/NodeEditorGUI.cs b/Scripts/Editor/NodeEditorGUI.cs
index 21d6d0f..fe9279d 100755
--- a/Scripts/Editor/NodeEditorGUI.cs
+++ b/Scripts/Editor/NodeEditorGUI.cs
@@ -142,11 +142,21 @@ namespace XNodeEditor {
         }
 
         /// <summary> Draw a bezier from output to input in grid coordinates </summary>
-        public void DrawNoodle(Gradient gradient, NoodlePath path, NoodleStroke stroke, float thickness, List<Vector2> gridPoints) {
+        public void DrawNoodle(Gradient gradient, NoodlePath path, NoodleStroke stroke, float thickness, List<Vector2> gridPoints, bool applyWindowCulling = false) {
             // convert grid points to window points
             for (int i = 0; i < gridPoints.Count; ++i)
                 gridPoints[i] = GridToWindowPosition(gridPoints[i]);
 
+            if (applyWindowCulling)
+            {
+                var p0 = gridPoints[0];
+                var p1 = gridPoints[1];
+
+                var windowRect = new Rect(Vector2.zero, new Vector2(position.width, position.height));
+
+                if (!windowRect.Contains(p0) && !windowRect.Contains(p1)) return;
+            }
+
             Color originalHandlesColor = Handles.color;
             Handles.color = gradient.Evaluate(0f);
             int length = gridPoints.Count;
@@ -354,7 +364,7 @@ namespace XNodeEditor {
                         gridPoints.Add(fromRect.center);
                         gridPoints.AddRange(reroutePoints);
                         gridPoints.Add(toRect.center);
-                        DrawNoodle(noodleGradient, noodlePath, noodleStroke, noodleThickness, gridPoints);
+                        DrawNoodle(noodleGradient, noodlePath, noodleStroke, noodleThickness, gridPoints, true);
 
                         // Loop through reroute points again and draw the points
                         for (int i = 0; i < reroutePoints.Count; i++) {