Integrate a set of ordinary differential equations (initial value problem) in time.
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#include <vtkInitialValueProblemSolver.h>
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virtual int | IsA (const char *type) |
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vtkInitialValueProblemSolver * | NewInstance () const |
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virtual void | PrintSelf (ostream &os, vtkIndent indent) |
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virtual int | IsAdaptive () |
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virtual int | ComputeNextStep (double *xprev, double *xnext, double t, double &delT, double maxError, double &error) |
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virtual int | ComputeNextStep (double *xprev, double *dxprev, double *xnext, double t, double &delT, double maxError, double &error) |
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virtual int | ComputeNextStep (double *xprev, double *xnext, double t, double &delT, double &delTActual, double minStep, double maxStep, double maxError, double &error) |
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virtual int | ComputeNextStep (double *xprev, double *dxprev, double *xnext, double t, double &delT, double &delTActual, double minStep, double maxStep, double maxError, double &error)=0 |
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virtual void | SetFunctionSet (vtkFunctionSet *functionset) |
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virtual vtkFunctionSet * | GetFunctionSet () |
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Integrate a set of ordinary differential equations (initial value problem) in time.
Given a vtkFunctionSet which returns dF_i(x_j, t)/dt given x_j and t, vtkInitialValueProblemSolver computes the value of F_i at t+deltat.
- Warning
- vtkInitialValueProblemSolver and it's subclasses are not thread-safe. You should create a new integrator for each thread.
- See Also
- vtkRungeKutta2 vtkRungeKutta4
Definition at line 39 of file vtkInitialValueProblemSolver.h.
vtkInitialValueProblemSolver::vtkInitialValueProblemSolver |
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vtkInitialValueProblemSolver::~vtkInitialValueProblemSolver |
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static int vtkInitialValueProblemSolver::IsTypeOf |
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const char * |
type | ) |
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virtual int vtkInitialValueProblemSolver::IsA |
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const char * |
type | ) |
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virtual vtkObjectBase* vtkInitialValueProblemSolver::NewInstanceInternal |
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const |
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virtual void vtkInitialValueProblemSolver::PrintSelf |
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ostream & |
os, |
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vtkIndent |
indent |
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virtual int vtkInitialValueProblemSolver::ComputeNextStep |
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double * |
xprev, |
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double * |
xnext, |
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double |
t, |
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double & |
delT, |
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double |
maxError, |
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double & |
error |
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inlinevirtual |
Given initial values, xprev , initial time, t and a requested time interval, delT calculate values of x at t+delTActual (xnext). For certain concrete sub-classes delTActual != delT. This occurs when the solver supports adaptive stepsize control. If this is the case, the solver tries to change to stepsize such that the (estimated) error of the integration is less than maxError. The solver will not set the stepsize smaller than minStep or larger than maxStep. Also note that delT is an in/out argument. Adaptive solvers will modify delT to reflect the best (estimated) size for the next integration step. An estimated value for the error is returned (by reference) in error. Note that only some concrete sub-classes support this. Otherwise, the error is set to 0. This method returns an error code representing the nature of the failure: OutOfDomain = 1, NotInitialized = 2, UnexpectedValue = 3
Reimplemented in vtkRungeKutta45, vtkRungeKutta4, and vtkRungeKutta2.
Definition at line 60 of file vtkInitialValueProblemSolver.h.
virtual int vtkInitialValueProblemSolver::ComputeNextStep |
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double * |
xprev, |
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double * |
dxprev, |
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double * |
xnext, |
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double |
t, |
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double & |
delT, |
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double |
maxError, |
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double & |
error |
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inlinevirtual |
Given initial values, xprev , initial time, t and a requested time interval, delT calculate values of x at t+delTActual (xnext). For certain concrete sub-classes delTActual != delT. This occurs when the solver supports adaptive stepsize control. If this is the case, the solver tries to change to stepsize such that the (estimated) error of the integration is less than maxError. The solver will not set the stepsize smaller than minStep or larger than maxStep. Also note that delT is an in/out argument. Adaptive solvers will modify delT to reflect the best (estimated) size for the next integration step. An estimated value for the error is returned (by reference) in error. Note that only some concrete sub-classes support this. Otherwise, the error is set to 0. This method returns an error code representing the nature of the failure: OutOfDomain = 1, NotInitialized = 2, UnexpectedValue = 3
Reimplemented in vtkRungeKutta45, vtkRungeKutta4, and vtkRungeKutta2.
Definition at line 70 of file vtkInitialValueProblemSolver.h.
virtual int vtkInitialValueProblemSolver::ComputeNextStep |
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double * |
xprev, |
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double * |
xnext, |
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double |
t, |
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double & |
delT, |
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double & |
delTActual, |
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double |
minStep, |
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double |
maxStep, |
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double |
maxError, |
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double & |
error |
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inlinevirtual |
Given initial values, xprev , initial time, t and a requested time interval, delT calculate values of x at t+delTActual (xnext). For certain concrete sub-classes delTActual != delT. This occurs when the solver supports adaptive stepsize control. If this is the case, the solver tries to change to stepsize such that the (estimated) error of the integration is less than maxError. The solver will not set the stepsize smaller than minStep or larger than maxStep. Also note that delT is an in/out argument. Adaptive solvers will modify delT to reflect the best (estimated) size for the next integration step. An estimated value for the error is returned (by reference) in error. Note that only some concrete sub-classes support this. Otherwise, the error is set to 0. This method returns an error code representing the nature of the failure: OutOfDomain = 1, NotInitialized = 2, UnexpectedValue = 3
Reimplemented in vtkRungeKutta45, vtkRungeKutta4, and vtkRungeKutta2.
Definition at line 80 of file vtkInitialValueProblemSolver.h.
virtual int vtkInitialValueProblemSolver::ComputeNextStep |
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double * |
xprev, |
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double * |
dxprev, |
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double * |
xnext, |
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double |
t, |
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double & |
delT, |
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double & |
delTActual, |
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double |
minStep, |
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double |
maxStep, |
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double |
maxError, |
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double & |
error |
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pure virtual |
Given initial values, xprev , initial time, t and a requested time interval, delT calculate values of x at t+delTActual (xnext). For certain concrete sub-classes delTActual != delT. This occurs when the solver supports adaptive stepsize control. If this is the case, the solver tries to change to stepsize such that the (estimated) error of the integration is less than maxError. The solver will not set the stepsize smaller than minStep or larger than maxStep. Also note that delT is an in/out argument. Adaptive solvers will modify delT to reflect the best (estimated) size for the next integration step. An estimated value for the error is returned (by reference) in error. Note that only some concrete sub-classes support this. Otherwise, the error is set to 0. This method returns an error code representing the nature of the failure: OutOfDomain = 1, NotInitialized = 2, UnexpectedValue = 3
Implemented in vtkRungeKutta45, vtkRungeKutta4, and vtkRungeKutta2.
virtual void vtkInitialValueProblemSolver::SetFunctionSet |
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vtkFunctionSet * |
functionset | ) |
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Set / get the dataset used for the implicit function evaluation.
virtual vtkFunctionSet* vtkInitialValueProblemSolver::GetFunctionSet |
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Set / get the dataset used for the implicit function evaluation.
virtual int vtkInitialValueProblemSolver::IsAdaptive |
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virtual void vtkInitialValueProblemSolver::Initialize |
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double* vtkInitialValueProblemSolver::Vals |
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double* vtkInitialValueProblemSolver::Derivs |
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int vtkInitialValueProblemSolver::Initialized |
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int vtkInitialValueProblemSolver::Adaptive |
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The documentation for this class was generated from the following file: