Implement this OnDrawGizmosSelected if you want to draw gizmos only if the object is selected.

Gizmos are drawn only when the object is selected. Gizmos are not pickable. This is used to ease setup. For example an explosion script could draw a sphere showing the explosion radius.
	var explosionRadius : float = 5.0;

function OnDrawGizmosSelected () { // Display the explosion radius when selected Gizmos.color = Color.white; Gizmos.DrawSphere (transform.position, explosionRadius); }