Handles.DrawWireArc

Parameters

Description

Draw a circular arc in 3D space.

Wire Arc in the Scene View.

#pragma strict
// Creates a 180 degrees wire arc with a ScaleValueHandle attached
// that lets you modify the shieldArea var in the "Shield" script.
// Also displays a text label and a reset button.
@CustomEditor(Shield)
public class ShieldEditor extends Editor {
	function OnSceneGUI() {
		// cast & store references
		var shield: Shield = (target as Shield);
		var transform: Transform = shield.transform;
		// 3D UI: arc and scale handle
		Handles.color = Color.blue;
		Handles.DrawWireArc(transform.position, transform.up, -transform.right, 180, shield.shieldArea);
		shield.shieldArea = Handles.ScaleValueHandle(shield.shieldArea, transform.position + transform.forward * shield.shieldArea, transform.rotation, 1, Handles.ConeCap, 1);
		// start of 2D UI section
		Handles.BeginGUI();
		// information label
		Handles.Label(transform.position + Vector3.right * 2, "Shield Area: " + shield.shieldArea);
		// reset button:
		GUILayout.BeginArea(new Rect(Screen.width - 100, Screen.height - 80, 90, 50));
		if (GUILayout.Button("Reset Area")) {
			shield.shieldArea = 5;
		}
		GUILayout.EndArea();
		// end of 2D UI section
		Handles.EndGUI();
	}
}
// Create a 180 degrees wire arc with a ScaleValueHandle attached to the disc
// that lets you modify the "shieldArea" var in the WireArcExample.js
@CustomEditor(WireArcExample)
public class DrawWireArc extends Editor {
	function OnSceneGUI() {
		Handles.color = Color.red;
		var myObj: WireArcExample = WireArcExampletarget;
		Handles.DrawWireArc(myObj.transform.position, myObj.transform.up, -myObj.transform.right, 180, myObj.shieldArea);
		myObj.shieldArea = floatHandles.ScaleValueHandle(myObj.shieldArea, myObj.transform.position + myObj.transform.forward * myObj.shieldArea, myObj.transform.rotation, 1, Handles.ConeCap, 1);
	}
}

using UnityEditor;
using UnityEngine;
using UnityEditor;
using System.Collections;

// Creates a 180 degrees wire arc with a ScaleValueHandle attached
// that lets you modify the shieldArea var in the "Shield" script.
// Also displays a text label and a reset button.

[CustomEditor (typeof(Shield))]
public class ShieldEditor : Editor {

	void OnSceneGUI () {
		
		// cast & store references
		Shield shield = (target as Shield);
		Transform transform = shield.transform;
		
		// 3D UI: arc and scale handle
		Handles.color = Color.blue;
		Handles.DrawWireArc(transform.position, transform.up, -transform.right, 180, shield.shieldArea);
		shield.shieldArea = Handles.ScaleValueHandle( shield.shieldArea, transform.position + transform.forward*shield.shieldArea, transform.rotation, 1, Handles.ConeCap, 1);
		
		// start of 2D UI section
		Handles.BeginGUI();
		
		// information label
		Handles.Label(transform.position + Vector3.right*2, "Shield Area: " +shield.shieldArea);
	
		// reset button:
		GUILayout.BeginArea(new Rect(Screen.width - 100, Screen.height - 80, 90,50));
		if(GUILayout.Button("Reset Area")) { shield.shieldArea = 5; }
		GUILayout.EndArea();
		
		// end of 2D UI section
		Handles.EndGUI();
		
	}
}

// Create a 180 degrees wire arc with a ScaleValueHandle attached to the disc
// that lets you modify the "shieldArea" var in the WireArcExample.js
[CustomEditor(typeof(WireArcExample))]
public class DrawWireArc : Editor {
    void OnSceneGUI() {
        Handles.color = Color.red;
        WireArcExample myObj = (WireArcExample) target;
        Handles.DrawWireArc(myObj.transform.position, myObj.transform.up, -myObj.transform.right, 180, myObj.shieldArea);
		myObj.shieldArea = (float) Handles.ScaleValueHandle(myObj.shieldArea, myObj.transform.position + myObj.transform.forward * myObj.shieldArea, myObj.transform.rotation, 1, Handles.ConeCap, 1);
    }
}

And the script attached to the Game Object which should have the custom handles:

	// WireArcExample.js
	
	var shieldArea : float = 5;