+node example

1 files changed, 567 insertions, 0 deletions

diff --git a/Other/NodeEditorExamples/Assets/xNode-examples/Scripts/Editor/NodeEditorGUI.cs b/Other/NodeEditorExamples/Assets/xNode-examples/Scripts/Editor/NodeEditorGUI.cs
new file mode 100644
index 00000000..41f1d9ca
--- /dev/null
+++ b/Other/NodeEditorExamples/Assets/xNode-examples/Scripts/Editor/NodeEditorGUI.cs
@@ -0,0 +1,567 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using UnityEditor;
+using UnityEngine;
+using XNodeEditor.Internal;
+
+namespace XNodeEditor {
+    /// <summary> Contains GUI methods </summary>
+    public partial class NodeEditorWindow {
+        public NodeGraphEditor graphEditor;
+        private List<UnityEngine.Object> selectionCache;
+        private List<XNode.Node> culledNodes;
+        /// <summary> 19 if docked, 22 if not </summary>
+        private int topPadding { get { return isDocked() ? 19 : 22; } }
+        /// <summary> Executed after all other window GUI. Useful if Zoom is ruining your day. Automatically resets after being run.</summary>
+        public event Action onLateGUI;
+        private static readonly Vector3[] polyLineTempArray = new Vector3[2];
+
+        protected virtual void OnGUI() {
+            Event e = Event.current;
+            Matrix4x4 m = GUI.matrix;
+            if (graph == null) return;
+            ValidateGraphEditor();
+            Controls();
+
+            DrawGrid(position, zoom, panOffset);
+            DrawConnections();
+            DrawDraggedConnection();
+            DrawNodes();
+            DrawSelectionBox();
+            DrawTooltip();
+            graphEditor.OnGUI();
+
+            // Run and reset onLateGUI
+            if (onLateGUI != null) {
+                onLateGUI();
+                onLateGUI = null;
+            }
+
+            GUI.matrix = m;
+        }
+
+        public static void BeginZoomed(Rect rect, float zoom, float topPadding) {
+            GUI.EndClip();
+
+            GUIUtility.ScaleAroundPivot(Vector2.one / zoom, rect.size * 0.5f);
+            Vector4 padding = new Vector4(0, topPadding, 0, 0);
+            padding *= zoom;
+            GUI.BeginClip(new Rect(-((rect.width * zoom) - rect.width) * 0.5f, -(((rect.height * zoom) - rect.height) * 0.5f) + (topPadding * zoom),
+                rect.width * zoom,
+                rect.height * zoom));
+        }
+
+        public static void EndZoomed(Rect rect, float zoom, float topPadding) {
+            GUIUtility.ScaleAroundPivot(Vector2.one * zoom, rect.size * 0.5f);
+            Vector3 offset = new Vector3(
+                (((rect.width * zoom) - rect.width) * 0.5f),
+                (((rect.height * zoom) - rect.height) * 0.5f) + (-topPadding * zoom) + topPadding,
+                0);
+            GUI.matrix = Matrix4x4.TRS(offset, Quaternion.identity, Vector3.one);
+        }
+
+        public void DrawGrid(Rect rect, float zoom, Vector2 panOffset) {
+
+            rect.position = Vector2.zero;
+
+            Vector2 center = rect.size / 2f;
+            Texture2D gridTex = graphEditor.GetGridTexture();
+            Texture2D crossTex = graphEditor.GetSecondaryGridTexture();
+
+            // Offset from origin in tile units
+            float xOffset = -(center.x * zoom + panOffset.x) / gridTex.width;
+            float yOffset = ((center.y - rect.size.y) * zoom + panOffset.y) / gridTex.height;
+
+            Vector2 tileOffset = new Vector2(xOffset, yOffset);
+
+            // Amount of tiles
+            float tileAmountX = Mathf.Round(rect.size.x * zoom) / gridTex.width;
+            float tileAmountY = Mathf.Round(rect.size.y * zoom) / gridTex.height;
+
+            Vector2 tileAmount = new Vector2(tileAmountX, tileAmountY);
+
+            // Draw tiled background
+            GUI.DrawTextureWithTexCoords(rect, gridTex, new Rect(tileOffset, tileAmount));
+            GUI.DrawTextureWithTexCoords(rect, crossTex, new Rect(tileOffset + new Vector2(0.5f, 0.5f), tileAmount));
+        }
+
+        public void DrawSelectionBox() {
+            if (currentActivity == NodeActivity.DragGrid) {
+                Vector2 curPos = WindowToGridPosition(Event.current.mousePosition);
+                Vector2 size = curPos - dragBoxStart;
+                Rect r = new Rect(dragBoxStart, size);
+                r.position = GridToWindowPosition(r.position);
+                r.size /= zoom;
+                Handles.DrawSolidRectangleWithOutline(r, new Color(0, 0, 0, 0.1f), new Color(1, 1, 1, 0.6f));
+            }
+        }
+
+        public static bool DropdownButton(string name, float width) {
+            return GUILayout.Button(name, EditorStyles.toolbarDropDown, GUILayout.Width(width));
+        }
+
+        /// <summary> Show right-click context menu for hovered reroute </summary>
+        void ShowRerouteContextMenu(RerouteReference reroute) {
+            GenericMenu contextMenu = new GenericMenu();
+            contextMenu.AddItem(new GUIContent("Remove"), false, () => reroute.RemovePoint());
+            contextMenu.DropDown(new Rect(Event.current.mousePosition, Vector2.zero));
+            if (NodeEditorPreferences.GetSettings().autoSave) AssetDatabase.SaveAssets();
+        }
+
+        /// <summary> Show right-click context menu for hovered port </summary>
+        void ShowPortContextMenu(XNode.NodePort hoveredPort) {
+            GenericMenu contextMenu = new GenericMenu();
+            contextMenu.AddItem(new GUIContent("Clear Connections"), false, () => hoveredPort.ClearConnections());
+            contextMenu.DropDown(new Rect(Event.current.mousePosition, Vector2.zero));
+            if (NodeEditorPreferences.GetSettings().autoSave) AssetDatabase.SaveAssets();
+        }
+
+        static Vector2 CalculateBezierPoint(Vector2 p0, Vector2 p1, Vector2 p2, Vector2 p3, float t) {
+            float u = 1 - t;
+            float tt = t * t, uu = u * u;
+            float uuu = uu * u, ttt = tt * t;
+            return new Vector2(
+                (uuu * p0.x) + (3 * uu * t * p1.x) + (3 * u * tt * p2.x) + (ttt * p3.x),
+                (uuu * p0.y) + (3 * uu * t * p1.y) + (3 * u * tt * p2.y) + (ttt * p3.y)
+            );
+        }
+
+        /// <summary> Draws a line segment without allocating temporary arrays </summary>
+        static void DrawAAPolyLineNonAlloc(float thickness, Vector2 p0, Vector2 p1) {
+            polyLineTempArray[0].x = p0.x;
+            polyLineTempArray[0].y = p0.y;
+            polyLineTempArray[1].x = p1.x;
+            polyLineTempArray[1].y = p1.y;
+            Handles.DrawAAPolyLine(thickness, polyLineTempArray);
+        }
+
+        /// <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) {
+            // convert grid points to window points
+            for (int i = 0; i < gridPoints.Count; ++i)
+                gridPoints[i] = GridToWindowPosition(gridPoints[i]);
+
+            Color originalHandlesColor = Handles.color;
+            Handles.color = gradient.Evaluate(0f);
+            int length = gridPoints.Count;
+            switch (path) {
+                case NoodlePath.Curvy:
+                    Vector2 outputTangent = Vector2.right;
+                    for (int i = 0; i < length - 1; i++) {
+                        Vector2 inputTangent;
+                        // Cached most variables that repeat themselves here to avoid so many indexer calls :p
+                        Vector2 point_a = gridPoints[i];
+                        Vector2 point_b = gridPoints[i + 1];
+                        float dist_ab = Vector2.Distance(point_a, point_b);
+                        if (i == 0) outputTangent = zoom * dist_ab * 0.01f * Vector2.right;
+                        if (i < length - 2) {
+                            Vector2 point_c = gridPoints[i + 2];
+                            Vector2 ab = (point_b - point_a).normalized;
+                            Vector2 cb = (point_b - point_c).normalized;
+                            Vector2 ac = (point_c - point_a).normalized;
+                            Vector2 p = (ab + cb) * 0.5f;
+                            float tangentLength = (dist_ab + Vector2.Distance(point_b, point_c)) * 0.005f * zoom;
+                            float side = ((ac.x * (point_b.y - point_a.y)) - (ac.y * (point_b.x - point_a.x)));
+
+                            p = tangentLength * Mathf.Sign(side) * new Vector2(-p.y, p.x);
+                            inputTangent = p;
+                        } else {
+                            inputTangent = zoom * dist_ab * 0.01f * Vector2.left;
+                        }
+
+                        // Calculates the tangents for the bezier's curves.
+                        float zoomCoef = 50 / zoom;
+                        Vector2 tangent_a = point_a + outputTangent * zoomCoef;
+                        Vector2 tangent_b = point_b + inputTangent * zoomCoef;
+                        // Hover effect.
+                        int division = Mathf.RoundToInt(.2f * dist_ab) + 3;
+                        // Coloring and bezier drawing.
+                        int draw = 0;
+                        Vector2 bezierPrevious = point_a;
+                        for (int j = 1; j <= division; ++j) {
+                            if (stroke == NoodleStroke.Dashed) {
+                                draw++;
+                                if (draw >= 2) draw = -2;
+                                if (draw < 0) continue;
+                                if (draw == 0) bezierPrevious = CalculateBezierPoint(point_a, tangent_a, tangent_b, point_b, (j - 1f) / (float) division);
+                            }
+                            if (i == length - 2)
+                                Handles.color = gradient.Evaluate((j + 1f) / division);
+                            Vector2 bezierNext = CalculateBezierPoint(point_a, tangent_a, tangent_b, point_b, j / (float) division);
+                            DrawAAPolyLineNonAlloc(thickness, bezierPrevious, bezierNext);
+                            bezierPrevious = bezierNext;
+                        }
+                        outputTangent = -inputTangent;
+                    }
+                    break;
+                case NoodlePath.Straight:
+                    for (int i = 0; i < length - 1; i++) {
+                        Vector2 point_a = gridPoints[i];
+                        Vector2 point_b = gridPoints[i + 1];
+                        // Draws the line with the coloring.
+                        Vector2 prev_point = point_a;
+                        // Approximately one segment per 5 pixels
+                        int segments = (int) Vector2.Distance(point_a, point_b) / 5;
+                        segments = Math.Max(segments, 1);
+
+                        int draw = 0;
+                        for (int j = 0; j <= segments; j++) {
+                            draw++;
+                            float t = j / (float) segments;
+                            Vector2 lerp = Vector2.Lerp(point_a, point_b, t);
+                            if (draw > 0) {
+                                if (i == length - 2) Handles.color = gradient.Evaluate(t);
+                                DrawAAPolyLineNonAlloc(thickness, prev_point, lerp);
+                            }
+                            prev_point = lerp;
+                            if (stroke == NoodleStroke.Dashed && draw >= 2) draw = -2;
+                        }
+                    }
+                    break;
+                case NoodlePath.Angled:
+                    for (int i = 0; i < length - 1; i++) {
+                        if (i == length - 1) continue; // Skip last index
+                        if (gridPoints[i].x <= gridPoints[i + 1].x - (50 / zoom)) {
+                            float midpoint = (gridPoints[i].x + gridPoints[i + 1].x) * 0.5f;
+                            Vector2 start_1 = gridPoints[i];
+                            Vector2 end_1 = gridPoints[i + 1];
+                            start_1.x = midpoint;
+                            end_1.x = midpoint;
+                            if (i == length - 2) {
+                                DrawAAPolyLineNonAlloc(thickness, gridPoints[i], start_1);
+                                Handles.color = gradient.Evaluate(0.5f);
+                                DrawAAPolyLineNonAlloc(thickness, start_1, end_1);
+                                Handles.color = gradient.Evaluate(1f);
+                                DrawAAPolyLineNonAlloc(thickness, end_1, gridPoints[i + 1]);
+                            } else {
+                                DrawAAPolyLineNonAlloc(thickness, gridPoints[i], start_1);
+                                DrawAAPolyLineNonAlloc(thickness, start_1, end_1);
+                                DrawAAPolyLineNonAlloc(thickness, end_1, gridPoints[i + 1]);
+                            }
+                        } else {
+                            float midpoint = (gridPoints[i].y + gridPoints[i + 1].y) * 0.5f;
+                            Vector2 start_1 = gridPoints[i];
+                            Vector2 end_1 = gridPoints[i + 1];
+                            start_1.x += 25 / zoom;
+                            end_1.x -= 25 / zoom;
+                            Vector2 start_2 = start_1;
+                            Vector2 end_2 = end_1;
+                            start_2.y = midpoint;
+                            end_2.y = midpoint;
+                            if (i == length - 2) {
+                                DrawAAPolyLineNonAlloc(thickness, gridPoints[i], start_1);
+                                Handles.color = gradient.Evaluate(0.25f);
+                                DrawAAPolyLineNonAlloc(thickness, start_1, start_2);
+                                Handles.color = gradient.Evaluate(0.5f);
+                                DrawAAPolyLineNonAlloc(thickness, start_2, end_2);
+                                Handles.color = gradient.Evaluate(0.75f);
+                                DrawAAPolyLineNonAlloc(thickness, end_2, end_1);
+                                Handles.color = gradient.Evaluate(1f);
+                                DrawAAPolyLineNonAlloc(thickness, end_1, gridPoints[i + 1]);
+                            } else {
+                                DrawAAPolyLineNonAlloc(thickness, gridPoints[i], start_1);
+                                DrawAAPolyLineNonAlloc(thickness, start_1, start_2);
+                                DrawAAPolyLineNonAlloc(thickness, start_2, end_2);
+                                DrawAAPolyLineNonAlloc(thickness, end_2, end_1);
+                                DrawAAPolyLineNonAlloc(thickness, end_1, gridPoints[i + 1]);
+                            }
+                        }
+                    }
+                    break;
+                case NoodlePath.ShaderLab:
+                    Vector2 start = gridPoints[0];
+                    Vector2 end = gridPoints[length - 1];
+                    //Modify first and last point in array so we can loop trough them nicely.
+                    gridPoints[0] = gridPoints[0] + Vector2.right * (20 / zoom);
+                    gridPoints[length - 1] = gridPoints[length - 1] + Vector2.left * (20 / zoom);
+                    //Draw first vertical lines going out from nodes
+                    Handles.color = gradient.Evaluate(0f);
+                    DrawAAPolyLineNonAlloc(thickness, start, gridPoints[0]);
+                    Handles.color = gradient.Evaluate(1f);
+                    DrawAAPolyLineNonAlloc(thickness, end, gridPoints[length - 1]);
+                    for (int i = 0; i < length - 1; i++) {
+                        Vector2 point_a = gridPoints[i];
+                        Vector2 point_b = gridPoints[i + 1];
+                        // Draws the line with the coloring.
+                        Vector2 prev_point = point_a;
+                        // Approximately one segment per 5 pixels
+                        int segments = (int) Vector2.Distance(point_a, point_b) / 5;
+                        segments = Math.Max(segments, 1);
+
+                        int draw = 0;
+                        for (int j = 0; j <= segments; j++) {
+                            draw++;
+                            float t = j / (float) segments;
+                            Vector2 lerp = Vector2.Lerp(point_a, point_b, t);
+                            if (draw > 0) {
+                                if (i == length - 2) Handles.color = gradient.Evaluate(t);
+                                DrawAAPolyLineNonAlloc(thickness, prev_point, lerp);
+                            }
+                            prev_point = lerp;
+                            if (stroke == NoodleStroke.Dashed && draw >= 2) draw = -2;
+                        }
+                    }
+                    gridPoints[0] = start;
+                    gridPoints[length - 1] = end;
+                    break;
+            }
+            Handles.color = originalHandlesColor;
+        }
+
+        /// <summary> Draws all connections </summary>
+        public void DrawConnections() {
+            Vector2 mousePos = Event.current.mousePosition;
+            List<RerouteReference> selection = preBoxSelectionReroute != null ? new List<RerouteReference>(preBoxSelectionReroute) : new List<RerouteReference>();
+            hoveredReroute = new RerouteReference();
+
+            List<Vector2> gridPoints = new List<Vector2>(2);
+
+            Color col = GUI.color;
+            foreach (XNode.Node node in graph.nodes) {
+                //If a null node is found, return. This can happen if the nodes associated script is deleted. It is currently not possible in Unity to delete a null asset.
+                if (node == null) continue;
+
+                // Draw full connections and output > reroute
+                foreach (XNode.NodePort output in node.Outputs) {
+                    //Needs cleanup. Null checks are ugly
+                    Rect fromRect;
+                    if (!_portConnectionPoints.TryGetValue(output, out fromRect)) continue;
+
+                    Color portColor = graphEditor.GetPortColor(output);
+                    for (int k = 0; k < output.ConnectionCount; k++) {
+                        XNode.NodePort input = output.GetConnection(k);
+
+                        Gradient noodleGradient = graphEditor.GetNoodleGradient(output, input);
+                        float noodleThickness = graphEditor.GetNoodleThickness(output, input);
+                        NoodlePath noodlePath = graphEditor.GetNoodlePath(output, input);
+                        NoodleStroke noodleStroke = graphEditor.GetNoodleStroke(output, input);
+
+                        // Error handling
+                        if (input == null) continue; //If a script has been updated and the port doesn't exist, it is removed and null is returned. If this happens, return.
+                        if (!input.IsConnectedTo(output)) input.Connect(output);
+                        Rect toRect;
+                        if (!_portConnectionPoints.TryGetValue(input, out toRect)) continue;
+
+                        List<Vector2> reroutePoints = output.GetReroutePoints(k);
+
+                        gridPoints.Clear();
+                        gridPoints.Add(fromRect.center);
+                        gridPoints.AddRange(reroutePoints);
+                        gridPoints.Add(toRect.center);
+                        DrawNoodle(noodleGradient, noodlePath, noodleStroke, noodleThickness, gridPoints);
+
+                        // Loop through reroute points again and draw the points
+                        for (int i = 0; i < reroutePoints.Count; i++) {
+                            RerouteReference rerouteRef = new RerouteReference(output, k, i);
+                            // Draw reroute point at position
+                            Rect rect = new Rect(reroutePoints[i], new Vector2(12, 12));
+                            rect.position = new Vector2(rect.position.x - 6, rect.position.y - 6);
+                            rect = GridToWindowRect(rect);
+
+                            // Draw selected reroute points with an outline
+                            if (selectedReroutes.Contains(rerouteRef)) {
+                                GUI.color = NodeEditorPreferences.GetSettings().highlightColor;
+                                GUI.DrawTexture(rect, NodeEditorResources.dotOuter);
+                            }
+
+                            GUI.color = portColor;
+                            GUI.DrawTexture(rect, NodeEditorResources.dot);
+                            if (rect.Overlaps(selectionBox)) selection.Add(rerouteRef);
+                            if (rect.Contains(mousePos)) hoveredReroute = rerouteRef;
+
+                        }
+                    }
+                }
+            }
+            GUI.color = col;
+            if (Event.current.type != EventType.Layout && currentActivity == NodeActivity.DragGrid) selectedReroutes = selection;
+        }
+
+        private void DrawNodes() {
+            Event e = Event.current;
+            if (e.type == EventType.Layout) {
+                selectionCache = new List<UnityEngine.Object>(Selection.objects);
+            }
+
+            System.Reflection.MethodInfo onValidate = null;
+            if (Selection.activeObject != null && Selection.activeObject is XNode.Node) {
+                onValidate = Selection.activeObject.GetType().GetMethod("OnValidate");
+                if (onValidate != null) EditorGUI.BeginChangeCheck();
+            }
+
+            BeginZoomed(position, zoom, topPadding);
+
+            Vector2 mousePos = Event.current.mousePosition;
+
+            if (e.type != EventType.Layout) {
+                hoveredNode = null;
+                hoveredPort = null;
+            }
+
+            List<UnityEngine.Object> preSelection = preBoxSelection != null ? new List<UnityEngine.Object>(preBoxSelection) : new List<UnityEngine.Object>();
+
+            // Selection box stuff
+            Vector2 boxStartPos = GridToWindowPositionNoClipped(dragBoxStart);
+            Vector2 boxSize = mousePos - boxStartPos;
+            if (boxSize.x < 0) { boxStartPos.x += boxSize.x; boxSize.x = Mathf.Abs(boxSize.x); }
+            if (boxSize.y < 0) { boxStartPos.y += boxSize.y; boxSize.y = Mathf.Abs(boxSize.y); }
+            Rect selectionBox = new Rect(boxStartPos, boxSize);
+
+            //Save guiColor so we can revert it
+            Color guiColor = GUI.color;
+
+            List<XNode.NodePort> removeEntries = new List<XNode.NodePort>();
+
+            if (e.type == EventType.Layout) culledNodes = new List<XNode.Node>();
+
+            for (int n = 0; n < graph.nodes.Count; n++) {
+                // Skip null nodes. The user could be in the process of renaming scripts, so removing them at this point is not advisable.
+                if (graph.nodes[n] == null) continue;
+                if (n >= graph.nodes.Count) return;
+                XNode.Node node = graph.nodes[n];
+
+                // Culling
+                if (e.type == EventType.Layout) {
+                    // Cull unselected nodes outside view
+                    if (!Selection.Contains(node) && ShouldBeCulled(node)) {
+                        culledNodes.Add(node);
+                        continue;
+                    }
+                } else if (culledNodes.Contains(node)) continue;
+
+                if (e.type == EventType.Repaint) {
+                    removeEntries.Clear();
+                    foreach (var kvp in _portConnectionPoints)
+                        if (kvp.Key.node == node) removeEntries.Add(kvp.Key);
+                    foreach (var k in removeEntries) _portConnectionPoints.Remove(k);
+                }
+
+                NodeEditor nodeEditor = NodeEditor.GetEditor(node, this);
+
+                NodeEditor.portPositions.Clear();
+
+                // Set default label width. This is potentially overridden in OnBodyGUI
+                EditorGUIUtility.labelWidth = 84;
+
+                //Get node position
+                Vector2 nodePos = GridToWindowPositionNoClipped(node.position);
+
+                GUILayout.BeginArea(new Rect(nodePos, new Vector2(nodeEditor.GetWidth(), 4000)));
+
+                bool selected = selectionCache.Contains(graph.nodes[n]);
+
+                if (selected) {
+                    GUIStyle style = new GUIStyle(nodeEditor.GetBodyStyle());
+                    GUIStyle highlightStyle = new GUIStyle(nodeEditor.GetBodyHighlightStyle());
+                    highlightStyle.padding = style.padding;
+                    style.padding = new RectOffset();
+                    GUI.color = nodeEditor.GetTint();
+                    GUILayout.BeginVertical(style);
+                    GUI.color = NodeEditorPreferences.GetSettings().highlightColor;
+                    GUILayout.BeginVertical(new GUIStyle(highlightStyle));
+                } else {
+                    GUIStyle style = new GUIStyle(nodeEditor.GetBodyStyle());
+                    GUI.color = nodeEditor.GetTint();
+                    GUILayout.BeginVertical(style);
+                }
+
+                GUI.color = guiColor;
+                EditorGUI.BeginChangeCheck();
+
+                //Draw node contents
+                nodeEditor.OnHeaderGUI();
+                nodeEditor.OnBodyGUI();
+
+                //If user changed a value, notify other scripts through onUpdateNode
+                if (EditorGUI.EndChangeCheck()) {
+                    if (NodeEditor.onUpdateNode != null) NodeEditor.onUpdateNode(node);
+                    EditorUtility.SetDirty(node);
+                    nodeEditor.serializedObject.ApplyModifiedProperties();
+                }
+
+                GUILayout.EndVertical();
+
+                //Cache data about the node for next frame
+                if (e.type == EventType.Repaint) {
+                    Vector2 size = GUILayoutUtility.GetLastRect().size;
+                    if (nodeSizes.ContainsKey(node)) nodeSizes[node] = size;
+                    else nodeSizes.Add(node, size);
+
+                    foreach (var kvp in NodeEditor.portPositions) {
+                        Vector2 portHandlePos = kvp.Value;
+                        portHandlePos += node.position;
+                        Rect rect = new Rect(portHandlePos.x - 8, portHandlePos.y - 8, 16, 16);
+                        portConnectionPoints[kvp.Key] = rect;
+                    }
+                }
+
+                if (selected) GUILayout.EndVertical();
+
+                if (e.type != EventType.Layout) {
+                    //Check if we are hovering this node
+                    Vector2 nodeSize = GUILayoutUtility.GetLastRect().size;
+                    Rect windowRect = new Rect(nodePos, nodeSize);
+                    if (windowRect.Contains(mousePos)) hoveredNode = node;
+
+                    //If dragging a selection box, add nodes inside to selection
+                    if (currentActivity == NodeActivity.DragGrid) {
+                        if (windowRect.Overlaps(selectionBox)) preSelection.Add(node);
+                    }
+
+                    //Check if we are hovering any of this nodes ports
+                    //Check input ports
+                    foreach (XNode.NodePort input in node.Inputs) {
+                        //Check if port rect is available
+                        if (!portConnectionPoints.ContainsKey(input)) continue;
+                        Rect r = GridToWindowRectNoClipped(portConnectionPoints[input]);
+                        if (r.Contains(mousePos)) hoveredPort = input;
+                    }
+                    //Check all output ports
+                    foreach (XNode.NodePort output in node.Outputs) {
+                        //Check if port rect is available
+                        if (!portConnectionPoints.ContainsKey(output)) continue;
+                        Rect r = GridToWindowRectNoClipped(portConnectionPoints[output]);
+                        if (r.Contains(mousePos)) hoveredPort = output;
+                    }
+                }
+
+                GUILayout.EndArea();
+            }
+
+            if (e.type != EventType.Layout && currentActivity == NodeActivity.DragGrid) Selection.objects = preSelection.ToArray();
+            EndZoomed(position, zoom, topPadding);
+
+            //If a change in is detected in the selected node, call OnValidate method. 
+            //This is done through reflection because OnValidate is only relevant in editor, 
+            //and thus, the code should not be included in build.
+            if (onValidate != null && EditorGUI.EndChangeCheck()) onValidate.Invoke(Selection.activeObject, null);
+        }
+
+        private bool ShouldBeCulled(XNode.Node node) {
+
+            Vector2 nodePos = GridToWindowPositionNoClipped(node.position);
+            if (nodePos.x / _zoom > position.width) return true; // Right
+            else if (nodePos.y / _zoom > position.height) return true; // Bottom
+            else if (nodeSizes.ContainsKey(node)) {
+                Vector2 size = nodeSizes[node];
+                if (nodePos.x + size.x < 0) return true; // Left
+                else if (nodePos.y + size.y < 0) return true; // Top
+            }
+            return false;
+        }
+
+        private void DrawTooltip() {
+            if (hoveredPort != null && NodeEditorPreferences.GetSettings().portTooltips && graphEditor != null) {
+                string tooltip = graphEditor.GetPortTooltip(hoveredPort);
+                if (string.IsNullOrEmpty(tooltip)) return;
+                GUIContent content = new GUIContent(tooltip);
+                Vector2 size = NodeEditorResources.styles.tooltip.CalcSize(content);
+                size.x += 8;
+                Rect rect = new Rect(Event.current.mousePosition - (size), size);
+                EditorGUI.LabelField(rect, content, NodeEditorResources.styles.tooltip);
+                Repaint();
+            }
+        }
+    }
+}