Version: 2022.1
LanguageEnglish
  • C#

Handles.ArrowHandleCap

Suggest a change

Success!

Thank you for helping us improve the quality of Unity Documentation. Although we cannot accept all submissions, we do read each suggested change from our users and will make updates where applicable.

Close

Submission failed

For some reason your suggested change could not be submitted. Please <a>try again</a> in a few minutes. And thank you for taking the time to help us improve the quality of Unity Documentation.

Close

Cancel

Declaration

public static void ArrowHandleCap(int controlID, Vector3 position, Quaternion rotation, float size, EventType eventType);

Parameters

controlID The control ID for the handle.
position The position of the handle in the space of Handles.matrix.
rotation The rotation of the handle in the space of Handles.matrix.
size The size of the handle in the space of Handles.matrix. Use HandleUtility.GetHandleSize if you want a constant screen-space size.
eventType Event type for the handle to act upon. By design it handles EventType.Layout and EventType.Repaint events.

Description

Draw an arrow like those used by the move tool.

On EventType.Layout event, calculates handle distance to mouse and calls HandleUtility.AddControl accordingly.

On EventType.Repaint event, draws the handle shape.

Arrow Handle Cap in the Scene View.

Add the following script to your Assets folder as ArrowExample.cs and add the ArrowExample component to an object in a Scene.

using UnityEngine;

public class ArrowExample : MonoBehaviour {}

Add the following script to Assets/Editor as ArrowExampleEditor.cs and select the object with the ArrowExample component.

using UnityEditor;
using UnityEngine;

[CustomEditor(typeof(ArrowExample))] public class ArrowExampleEditor : Editor { float size = 1f;

protected virtual void OnSceneGUI() { if (Event.current.type == EventType.Repaint) { Transform transform = ((ArrowExample)target).transform; Handles.color = Handles.xAxisColor; Handles.ArrowHandleCap( 0, transform.position + new Vector3(3f, 0f, 0f), transform.rotation * Quaternion.LookRotation(Vector3.right), size, EventType.Repaint ); Handles.color = Handles.yAxisColor; Handles.ArrowHandleCap( 0, transform.position + new Vector3(0f, 3f, 0f), transform.rotation * Quaternion.LookRotation(Vector3.up), size, EventType.Repaint ); Handles.color = Handles.zAxisColor; Handles.ArrowHandleCap( 0, transform.position + new Vector3(0f, 0f, 3f), transform.rotation * Quaternion.LookRotation(Vector3.forward), size, EventType.Repaint ); } } }