getNormal 

Returns the plane's normal. 

getOrigin 

Returns the origin point of this plane.
 

getXVector 

Returns the direction vector of the X-axis for this plane.
 

getYVector 

Returns the direction vector of the Y-axis for this plane.
 

set 

Sets the parameters for this plane from the input plane.
 

set 

Sets the parameters for this Plane according to the arguments, and returns error code.