Handles.DrawSolidArc

Parameters

Description

Draw a circular sector (pie piece) in 3D space.

Solid Arc in the Scene View.

using UnityEditor;
using UnityEngine;

static class ArcExample
{
    static Vector3 m_Angle = new Vector3(1.5f, .66f, 0f);

    // Create an arc at 0, 0, 0 in the Scene view and a slider that changes thes angle of the arc.
    [InitializeOnLoadMethod]
    static void Init() => SceneView.duringSceneGui += view =>
    {
        Handles.DrawLine(new Vector3(1.5f, 0f, 0f), new Vector3(1.5f, 1f, 0f));
        var handleSize = HandleUtility.GetHandleSize(m_Angle) * .1f;
        m_Angle = Handles.Slider(m_Angle, Vector3.up, handleSize, Handles.DotHandleCap, EditorSnapSettings.move.x);
        m_Angle.y = Mathf.Clamp(m_Angle.y, 0f, 1f);
        Handles.Label(m_Angle + Vector3.right * handleSize * 2f, $"Angle {m_Angle.y * 360f}");

        Handles.DrawSolidArc(Vector3.zero, Vector3.forward, Vector3.up, m_Angle.y * -360f, 1f);
    };
}