ArcHandle

Definition

• Type: Class
• Namespace: UnityEditor.IMGUI.Controls
• Assembly: UnityEditor.CoreModule

public class ArcHandle

Remarks

using UnityEngine;public class ProjectileExample : MonoBehaviour{    public float elevationAngle { get { return m_ElevationAngle; } set { m_ElevationAngle = value; } }    [SerializeField]    float m_ElevationAngle = 45f;    public float impulse { get { return m_Impulse; } set { m_Impulse = value; } }    [SerializeField]    float m_Impulse = 20f;    public Vector3 facingDirection    {        get        {            Vector3 result = transform.forward;            result.y = 0f;            return result.sqrMagnitude == 0f ? Vector3.forward : result.normalized;        }    }    protected virtual void Start()    {        GameObject ball = GameObject.CreatePrimitive(PrimitiveType.Sphere);        Vector3 direction = facingDirection;        direction = Quaternion.AngleAxis(elevationAngle, Vector3.Cross(direction, Vector3.up)) * direction;        ball.AddComponent<Rigidbody>().AddForce(direction  * impulse, ForceMode.Impulse);    }}

using UnityEditor;using UnityEditor.IMGUI.Controls;using UnityEngine;[CustomEditor(typeof(ProjectileExample))]public class ProjectileExampleEditor : Editor{    ArcHandle m_ArcHandle = new ArcHandle();    protected virtual void OnEnable()    {        // arc handle has no radius handle by default        m_ArcHandle.SetColorWithRadiusHandle(Color.white, 0.1f);    }    // the OnSceneGUI callback uses the Scene view camera for drawing handles by default    protected virtual void OnSceneGUI()    {        ProjectileExample projectileExample = (ProjectileExample)target;        // copy the target object's data to the handle        m_ArcHandle.angle = projectileExample.elevationAngle;        m_ArcHandle.radius = projectileExample.impulse;        // set the handle matrix so that angle extends upward from target's facing direction along ground        Vector3 handleDirection = projectileExample.facingDirection;        Vector3 handleNormal = Vector3.Cross(handleDirection, Vector3.up);        Matrix4x4 handleMatrix = Matrix4x4.TRS(            projectileExample.transform.position,            Quaternion.LookRotation(handleDirection, handleNormal),            Vector3.one        );        using (new Handles.DrawingScope(handleMatrix))        {            // draw the handle            EditorGUI.BeginChangeCheck();            m_ArcHandle.DrawHandle();            if (EditorGUI.EndChangeCheck())            {                // record the target object before setting new values so changes can be undone/redone                Undo.RecordObject(projectileExample, "Change Projectile Properties");                // copy the handle's updated data back to the target object                projectileExample.elevationAngle = m_ArcHandle.angle;                projectileExample.impulse = m_ArcHandle.radius;            }        }    }}

Constructors

Properties

Methods

Static Methods