Static functions and variables?

Unity Engine
1

I understand that I cannot access non-static variables with static functions.

So, how do I create a custom editor script with static functions (init, drawGizmo) and access non-static variables?

I need non-static variables for undo functionality.

Code is below, I want to use the variable “sliderValue” for the static drawGizmo function, but how?:

using UnityEditor;
using UnityEngine;

public class sliderTester2 : EditorWindow{

    [SerializeField]		float sliderValue = 1f;
	
    GameObject selectedObject;

    [MenuItem("Slider Tester/ Slider Test v2")]
    static void Init() {
	
        sliderTester2 myWindow = (sliderTester2)EditorWindow.GetWindow(typeof(sliderTester2));
        myWindow.autoRepaintOnSceneChange = true;
		
    }

    void OnGUI(){

        GUILayout.Label("Test Slider");
        sliderValue = EditorGUILayout.Slider(sliderValue, .1f, 5f);

    } // on GUI
	
	[DrawGizmo (GizmoType.SelectedOrChild | GizmoType.NotSelected)]
	static void RenderVisibleVertices (Transform obj, GizmoType gizmoType){
	
		Handles.color = Color.red;
		
		if(selectedObject)	{		
		
			Handles.DrawWireDisc(selectedObject.transform.position, Vector3.up, sliderValue);		
			
			}
		
	}
	
	}
} // class definition
2

Ok, so I managed to get the window by calling:

sliderTester2 myWindow = (sliderTester2)EditorWindow.GetWindow(typeof(sliderTester2));

Handles.DrawWireDisc(myWindow.selectedObject.transform.position, Vector3.up, myWindow.sliderValue);

But this never allows me to close the window, since it is constantly grabbing it.

Any ideas how to do this properly?

3

Trying to destroy the window manually just throws errors; Is there something simple I’m missing?

4

not sure exactly what you are doing here, but you can access non-static variables from a static context, you just have to have a static reference to the non-static object. Below is an example of how you might do it, though I don;t know if it applies to what you want to do:
ALso, note that it is conventional to have a class name be Capitalized and an instance be lowercased… for clarity you should rename sliderTester2 to SliderTester2.

public class sliderTester2 : EditorWindow{
  static sliderTester2 instance;
  float sliderValue = 1f;
...
    static void Init() {	
        instance = (sliderTester2)EditorWindow.GetWindow(typeof(sliderTester2));
        instance.autoRepaintOnSceneChange = true;
        //example of access an instance variabel from a static context:
       Debug.Log("sliderValue is "+instance.sliderValue);		
    }

then you can access any variable of that instance as instance.variable from a static context. Look-up “singleton” for better examples

5

Thanks for the reply.

OK, I got it to work using this example, but it never seems to clear the instance. I draw a gizmo attached to the selected Object, and now when I close the sliderValue window, the gizmo persists…

Shouldn’t it be destroyed in OnDestroy()?

///EDIT

Ha, OK got it working by inserting :

 if(instance){ do the gizmo code; }

pakfront Thanks!