Instance Property


A Boolean value that determines whether the field’s area of effect is shaped like a box or ellipsoid.


@property(nonatomic) BOOL usesEllipsoidalExtent;


If this value is NO (the default), the field’s area of effect is the box-shaped region of space defined by its halfExtent property and the position property of the node containing the field.

If this value is YES, the field’s area of effect is the ellipsoid bounded by this box-shaped region. That is, if all components of the half-extent vector are equal, the field has a spherical area of effect.

See Also

Specifying a Field’s Area of Effect


A location marking the end of the field’s area of effect.


The area affected by the field, either inside or outside its region.


The offset of the field’s center within its area of effect.


The field’s directional axis.