Gizmos.DrawFrustum
static function DrawFrustum(center: Vector3, fov: float, maxRange: float, minRange: float, aspect: float): void;
Parameters

center The apex of the truncated pyramid.
fov Vertical field of view (ie, the angle at the apex).
maxRange Distance of the frustum's far plane.
minRange Distance of the frustum's near plane.
aspect Width/height ratio.
Description

Draw a camera frustum using the currently set Gizmos.matrix for it's location and rotation.