@pre A control module has been added to this noise module via a
call to SetSourceMod() or SetControlMod().
@throw new noise::ExceptionNoMod See the preconditions for more
information.
The control module determines the weight of the blending
operation. Negative values weigh the blend towards the output
value from the source module with an index value of 0. Positive
values weigh the blend towards the output value from the source
module with an index value of 1.
Returns the control module.
@returns A reference to the control module.
@pre A control module has been added to this noise module via a call to SetSourceMod() or SetControlMod().
@throw new noise::ExceptionNoMod See the preconditions for more information.
The control module determines the weight of the blending operation. Negative values weigh the blend towards the output value from the source module with an index value of 0. Positive values weigh the blend towards the output value from the source module with an index value of 1.