jabble
Class Multigrid.VCycle

java.lang.Object
  jabble.Evolver
      jabble.Multigrid.VCycle

Enclosing class:

Multigrid

public class Multigrid.VCycle
extends Evolver

Field Summary

Fields inherited from class jabble.Evolver

constantsMap, dDirs, fieldArrayMap, fieldMap, grid, stopTrigger

Constructor Summary

Multigrid.VCycle()

Method Summary

protected void	calculateNewFields() Implements the multi grid method.
void	evolve(java.util.List<Slice> slices) Evolves the data in the list of slices of one time step.
int	evolve(java.util.List<Slice> slices, int maxIterations, Trigger stopTrigger) Evolves the slices using multi grid methods and the evolver given through the constructor.
int	getNPreviousSlicesNeeded() The number of slices needed by MultiGrid is the same number of slices needed by the evolver.
java.lang.String	toString() The String representation of the MultiGrid evolver, which include the toString() of the wrapped evolver.

Methods inherited from class jabble.Evolver

evolve, initializeFieldArray, initializeFieldArray, skipBoundaryPoint

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Multigrid.VCycle

public Multigrid.VCycle()

Method Detail

getNPreviousSlicesNeeded

public int getNPreviousSlicesNeeded()

The number of slices needed by MultiGrid is the same number of slices needed by the evolver.

Overrides:

getNPreviousSlicesNeeded in class Evolver

Returns:

the slices needed by the evolver

evolve

public void evolve(java.util.List<Slice> slices)

Description copied from class: Evolver

Evolves the data in the list of slices of one time step.

An EllipticSolver will work by continuing to refine the solution at each iteration over the Grid. At each iteration, the solver will determine what was the best improvement (that is F[n](P) - F[n-1](P)) and if it's less than the truncation error it will return. The solver will not go past the maxIterations limit.

The solver will return the solution by modifying the data contained in the Slice, or by removing and adding Fields accordingly.

Overrides:

evolve in class Evolver

Parameters:

slices - The slices containing the data to work on; first slice is the most recent in time of iterations performed by the solver.

evolve

public int evolve(java.util.List<Slice> slices,
                  int maxIterations,
                  Trigger stopTrigger)

Evolves the slices using multi grid methods and the evolver given through the constructor.

Overrides:

evolve in class Evolver

Parameters:

slices - the slices with the data to evolve

maxIterations - the maximum number of iterations (on any grid)

stopTrigger - stop condition for the evolver

Returns:

the number of iteration actually performed

calculateNewFields

protected void calculateNewFields()

Implements the multi grid method.

Specified by:

calculateNewFields in class Evolver

toString

public java.lang.String toString()

The String representation of the MultiGrid evolver, which include the toString() of the wrapped evolver.

Overrides:

toString in class java.lang.Object

Returns:

String representation of the evolver