Handles.ArrowHandleCap

Parameters

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
            );
        }
    }
}