vertex snapping refactor corrections

Source/Editor/SceneGraph/Actors/StaticModelNode.cs

@@ -23,20 +23,23 @@ namespace FlaxEditor.SceneGraph.Actors
         : base(actor)
         {
         }
+        
 
         /// <inheritdoc />
-        public override bool OnVertexSnap(ref Vector3 point, out Vector3 result)
+        public override bool OnVertexSnap(ref Ray ray, float hitDistance, out Vector3 result)
         {
-            result = point;
+            // Find the closest vertex to bounding box point (collision detection approximation)
+
+            result = ray.GetPoint(hitDistance);
             var model = ((StaticModel)Actor).Model;
             if (model && !model.WaitForLoaded())
             {
                 // TODO: move to C++ and use cached vertex buffer internally inside the Mesh
                 if (_vertices == null)
                     _vertices = new();
-                var pointLocal = (Float3)Actor.Transform.WorldToLocal(point);
+                var pointLocal = (Float3)Actor.Transform.WorldToLocal(result);
                 var minDistance = float.MaxValue;
-                foreach (var lod in model.LODs)
+                foreach (var lod in model.LODs) //[ToDo] fix it [Nori_SC note] this is wrong it should get current lod level going it throw all lods will create ghost snaping points
                 {
                     var hit = false;
                     foreach (var mesh in lod.Meshes)

Source/Editor/SceneGraph/SceneGraphNode.cs

@@ -94,18 +94,6 @@ namespace FlaxEditor.SceneGraph
         /// </summary>
         public virtual bool CanTransform => true;
 
-        /// <summary>
-        /// Gets a value indicating whether this node can be used for the vertex snapping feature.
-        /// </summary>
-        public bool CanVertexSnap
-        {
-            get
-            {
-                var v = Vector3.Zero;
-                return OnVertexSnap(ref v, out _);
-            }
-        }
-
         /// <summary>
         /// Gets a value indicating whether this <see cref="SceneGraphNode"/> is active.
         /// </summary>
@@ -365,14 +353,15 @@ namespace FlaxEditor.SceneGraph
         }
 
         /// <summary>
-        /// Performs the vertex snapping of a given point on the object surface that is closest to a given location.
+        /// Performs the vertex snapping for a given ray and hitDistance.
         /// </summary>
-        /// <param name="point">The position to snap.</param>
+        /// <param name="ray">Raycasted ray</param>
+        /// <param name="hitDistance">Hit distance from ray to object bounding box</param>
         /// <param name="result">The result point on the object mesh that is closest to the specified location.</param>
         /// <returns>True if got a valid result value, otherwise false (eg. if missing data or not initialized).</returns>
-        public virtual bool OnVertexSnap(ref Vector3 point, out Vector3 result)
+        public virtual bool OnVertexSnap(ref Ray ray,float hitDistance, out Vector3 result) // [NoriSC note] ray and hit Distance will be needed for a future use, in mesh types for proper collision detection
         {
-            result = point;
+            result = Vector3.Zero;
             return false;
         }