ChangeStep Class Reference

#include <TimeStepControl.h>

Inheritance diagram for ChangeStep:

Collaboration diagram for ChangeStep:

Public Member Functions
	ChangeStep (Solver *s, DriveCaller *pStrategyChangeDrive)
	~ChangeStep (void)
doublereal	dGetNewStepTime (StepIntegrator::StepChange currStep, doublereal iPerformedIters)
void	SetDriveHandler (const DriveHandler *driveHandler)
void	Init (integer iMaxIterations, doublereal dMinTimeStep, const DriveOwner &MaxTimeStep, doublereal dInitialTimeStep)
Public Member Functions inherited from TimeStepControl
	TimeStepControl (void)
virtual	~TimeStepControl (void)

Private Attributes
Solver *	s
DriveCaller *	pStrategyChangeDrive
doublereal	dMinTimeStep
DriveOwner	MaxTimeStep

Additional Inherited Members
Protected Attributes inherited from TimeStepControl
doublereal	dCurrTimeStep

Detailed Description

Definition at line 84 of file TimeStepControl.h.

Constructor & Destructor Documentation

ChangeStep::ChangeStep	(	Solver *	s,
		DriveCaller *	pStrategyChangeDrive
	)

Definition at line 106 of file TimeStepControl.cc.

References NO_OP.

: s(s),
pStrategyChangeDrive(pStrategyChangeDrive),
dMinTimeStep(-1.)
{
        NO_OP;
}

ChangeStep::~ChangeStep ( void  )

inline

Definition at line 93 of file TimeStepControl.h.

References pStrategyChangeDrive, and SAFEDELETE.

                          {
                SAFEDELETE(pStrategyChangeDrive);
        };

Member Function Documentation

doublereal ChangeStep::dGetNewStepTime ( StepIntegrator::StepChange  currStep, doublereal  iPerformedIters  )

virtual

Implements TimeStepControl.

Definition at line 115 of file TimeStepControl.cc.

References TimeStepControl::dCurrTimeStep, DriveOwner::dGet(), DriveCaller::dGet(), dMinTimeStep, MaxTimeStep, pStrategyChangeDrive, and StepIntegrator::REPEATSTEP.

{
        doublereal dNewStep = pStrategyChangeDrive->dGet();
        doublereal dMaxTimeStep = MaxTimeStep.dGet();;

        // are we sure we intend to change the time step if repeat is requested?
        if (currStep == StepIntegrator::REPEATSTEP && dNewStep == dCurrTimeStep) {
                return (dCurrTimeStep = dMinTimeStep/2.);
        }

        return (dCurrTimeStep = std::max(std::min(dNewStep, dMaxTimeStep), dMinTimeStep));
}

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void ChangeStep::Init ( integer  iMaxIterations, doublereal  dMinTimeStep, const DriveOwner &  MaxTimeStep, doublereal  dInitialTimeStep  )

virtual

Implements TimeStepControl.

Definition at line 135 of file TimeStepControl.cc.

References TimeStepControl::dCurrTimeStep, DriveOwner::dGet(), dMinTimeStep, MBDYN_EXCEPT_ARGS, DriveCaller::pCopy(), DriveOwner::pGetDriveCaller(), and DriveOwner::Set().

{
        this->dCurrTimeStep = dInitialTimeStep;
        this->MaxTimeStep.Set(MaxTimeStep.pGetDriveCaller()->pCopy());
        this->dMinTimeStep = dMinTimeStep;

        doublereal dInitialMaxTimeStep ;
        if (typeid(*MaxTimeStep.pGetDriveCaller()) == typeid(PostponedDriveCaller)) {
                dInitialMaxTimeStep = std::numeric_limits<doublereal>::max();

        } else{
                dInitialMaxTimeStep =  MaxTimeStep.dGet();
        }

        if (dMinTimeStep > dInitialMaxTimeStep) {
                silent_cerr("error: minimum time step " << dMinTimeStep << " greater than maximum (initial) time step " << dInitialMaxTimeStep << std::endl);
                throw ErrGeneric(MBDYN_EXCEPT_ARGS);
        }

        if (dInitialTimeStep < dMinTimeStep) {
                silent_cerr("error: initial time step " << dInitialTimeStep << " less than minimum time step " << dMinTimeStep << std::endl);
                throw ErrGeneric(MBDYN_EXCEPT_ARGS);
        }

        if (dInitialTimeStep > dInitialMaxTimeStep) {
                silent_cerr("error: initial time step " << dInitialTimeStep << " greater than maximum (initial) time step " << dInitialMaxTimeStep << std::endl);
                throw ErrGeneric(MBDYN_EXCEPT_ARGS);
        }
}

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void ChangeStep::SetDriveHandler ( const DriveHandler *  driveHandler )

virtual

Implements TimeStepControl.

Definition at line 129 of file TimeStepControl.cc.

References pStrategyChangeDrive, and DriveCaller::SetDrvHdl().

{
        pStrategyChangeDrive->SetDrvHdl(driveHandler);
}

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Member Data Documentation

doublereal ChangeStep::dMinTimeStep

private

Definition at line 88 of file TimeStepControl.h.

Referenced by dGetNewStepTime(), and Init().

DriveOwner ChangeStep::MaxTimeStep

private

Definition at line 89 of file TimeStepControl.h.

Referenced by dGetNewStepTime().

DriveCaller* ChangeStep::pStrategyChangeDrive

private

Definition at line 87 of file TimeStepControl.h.

Referenced by dGetNewStepTime(), SetDriveHandler(), and ~ChangeStep().

Solver* ChangeStep::s

private

Definition at line 86 of file TimeStepControl.h.

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The documentation for this class was generated from the following files:

• TimeStepControl.h
• TimeStepControl.cc