public float FalloffRange { get; set; }

Public Property FalloffRange As Single
	Get
	Set

public:
property float FalloffRange {
	float get ();
	void set (float value);
}

member FalloffRange : float32 with get, set

Property Value

This value is only used for ImageBasedLight where the Shape is a BoxShape. If this value is 0, the whole box is lit. If this value is 1, the light has full effect in the center and has no effect at the sides of the box. If the value is between 0 and 1, the falloff affects only the outer border; e.g if the FalloffRange is 0.1, the falloff happens only in the outer 10% of the box.

Reference