Parameters
| center | The center of the circle. |
| normal | The normal of the circle. |
| from | The direction of the point on the circle circumference, relative to the center, where the arc begins. |
| angle | The angle of the arc, in degrees. |
| radius | The radius of the circle Note: Use HandleUtility.GetHandleSize where you might want to have constant screen-sized handles. |
Description
Draw a circular arc in 3D space.
Wire Arc in the Scene View.
To use this example, save this script in the Assets/Editor folder:
using UnityEngine; using UnityEditor;
[CustomEditor( typeof( DrawWireArc ) )] public class DrawWireArcEditor : Editor { void OnSceneGUI( ) { DrawWireArc t = target as DrawWireArc;
Handles.color = Color.blue; Handles.Label( t.transform.position + Vector3.up * 2, t.transform.position.ToString( ) + "\nShieldArea: " + t.shieldArea.ToString( ) );
Handles.BeginGUI( ); GUILayout.BeginArea( new Rect( Screen.width - 100, Screen.height - 80, 90, 50 ) );
if( GUILayout.Button( "Reset Area" ) ) t.shieldArea = 5;
GUILayout.EndArea( ); Handles.EndGUI( );
Handles.color = new Color( 1, 1, 1, 0.2f ); Handles.DrawWireArc( t.transform.position, t.transform.up, -t.transform.right, 180, t.shieldArea );
Handles.color = Color.white; t.shieldArea = Handles.ScaleValueHandle( t.shieldArea, t.transform.position + t.transform.forward * t.shieldArea, t.transform.rotation, 1, Handles.ConeCap, 1 ); } }
...and place this script on the object where you want the arc to appear:
using UnityEngine;
[ExecuteInEditMode] public class DrawWireArc : MonoBehaviour { public float shieldArea = 5; }