(In EDITOR) Detecting mouse click position on a plane in world coords using RayCast from camera

Hello,

I am trying to detect where I clicked (mouse position in the world) in order to instantiate objects, while in the scene editor. When I tried that in the game, it was very easy and it worked like a charm, here is the code:

Code (CSharp):

1. Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
2. RaycastHit hit = new RaycastHit();
3.  
4. // This script is attached to the plane, so GetComponents returns the plane's collider
5. if (GetComponent<Collider>().Raycast(ray, out hit, Mathf.Infinity)) {
6.     // do stuff
7. }
8.      

When I wanted this to work inside the editor, I moved my script to the editor folder, I put on the beginning of the class

Code (csharp):

1.  [CustomEditor(typeof(Transform))]

(although I have no idea why did I put that it is a type of transform, I googled it and it just worke).

The script is running in the editor, which I can tell it because it does stuff to the scene, it just doesn't calculate the mouse position correclty.

The exact same code altered for the editor:

Code (csharp):

1.  
2. Ray ray = SceneView.currentDrawingSceneView.camera.ScreenPointToRay(e.mousePosition);
3. RaycastHit hit = new RaycastHit();
4.  
5. // Plane is found using GameObject.Find, so it should be the exact same instance as the one in the first case
6. if (plane.GetComponent<Collider>().Raycast(ray, out hit, Mathf.Infinity)) {
7.   // do stuff
8. }
9.  

In both cases I am using plane as a "floor" against which I am casting the ray. In the editor version it places my objects in the scene, but in the wrong position. It seems to depend on which angle I have the editor / scene camera rotated, but I thought it would be already handled by the camera's ScreenPointToRay function.

 

I've used something like this,

Code (CSharp):

1. Vector3 mouseWorld = Event.current.mousePosition;
2. mouseWorld.y = SceneView.currentDrawingSceneView.camera.pixelHeight - mouseWorld.y;
3. mouseWorld = SceneView.currentDrawingSceneView.camera.ScreenToWorldPoint(mouseWorld);
4. //mouseWorld.z = 0;
5.