void OnSceneGUI()
{
LightSource source = (LightSource)target;
Handles.color = Color.white;
Handles.DrawWireArc(source.transform.position, Vector3.back, Vector3.up, 360, (source.size / 2));
Vector3 pa = source.DirFromAngle(source.angle / 2, false) * (source.size / 2);
Vector3 pb = source.DirFromAngle(source.angle / -2, false) * (source.size / 2);
pa.z = source.transform.position.z;
pb.z = source.transform.position.z;
Handles.color = new Color(0.5f, 0.5f, 0.5f, 0.2f);
Handles.DrawSolidArc(source.transform.position, Vector3.back, pa, source.angle, (source.size / 2));
Handles.color = Color.white;
Handles.DrawLine(source.transform.position, source.transform.position + pa);
Handles.DrawLine(source.transform.position, source.transform.position + pb);
}