static function BeginGUI () : void

static function BeginGUI (position : Rect) : void

Description

Begin a 2D GUI block inside the 3D handle GUI.

Begin a 2D GUI block on top of the current handle camera.

See Also: Handles.EndGUI.

GUI in the Scene View.

// Create a 180 degrees wire arc with a ScaleValueHandle attached to the disc
// that lets you modify the "shieldArea" var in the WireArcExample.js, also
// lets you visualize some info of the transform and finally lets you 
// reset the shield area value to 5 by clicking on a button

@CustomEditor (DummyButtonScript)
class GUIButtonHandle extends Editor {
    function OnSceneGUI () {
        Handles.color = Color.blue;
         Handles.Label(target.transform.position + Vector3.up*2,
                 target.transform.position.ToString() + "\nShieldArea: " +
                 target.shieldArea.ToString());
         Handles.BeginGUI(Rect(Screen.width - 100, Screen.height - 80, 90,50));
         if(GUILayout.Button("Reset Area"))
             target.shieldArea = 5;
         Handles.EndGUI();
         
        Handles.DrawWireArc(target.transform.position, 
                target.transform.up, 
                -target.transform.right, 
                180, 
                target.shieldArea);
        target.shieldArea = 
        Handles.ScaleValueHandle(target.shieldArea,
                            target.transform.position + target.transform.forward*target.shieldArea,
                        target.transform.rotation,
                        1,
                        Handles.ConeCap,
                        1);
    }
}

And the script attached to this Handle:

// DummyButtonScript.js

var shieldArea : float = 5;