/**
* Update state by adding all additional states.
*
* @param original original state
* @return updated state, with all additional states included
* @exception PropagationException if one of the providers throws one
* @see #addAdditionalStateProvider(AdditionalStateProvider)
*/
protected SpacecraftState updateAdditionalStates(final SpacecraftState original)
throws PropagationException {
// start with original state,
// which may already contain additional states, for example in interpolated ephemerides
SpacecraftState updated = original;
if (initialState != null) {
// there is an initial state
// (null initial states occur for example in interpolated ephemerides)
// copy the additional states present in initialState but otherwise not managed
for (final Map.Entry<String, double[]> initial :
initialState.getAdditionalStates().entrySet()) {
if (!isAdditionalStateManaged(initial.getKey())) {
// this additional state was in the initial state, but is unknown to the propagator
// we simply copy its initial value as is
updated = updated.addAdditionalState(initial.getKey(), initial.getValue());
}
}
}
// update the additional states managed by providers
for (final AdditionalStateProvider provider : additionalStateProviders) {
updated =
updated.addAdditionalState(provider.getName(), provider.getAdditionalState(updated));
}
return updated;
}
/** {@inheritDoc} */
public boolean isAdditionalStateManaged(final String name) {
for (final AdditionalStateProvider provider : additionalStateProviders) {
if (provider.getName().equals(name)) {
return true;
}
}
return false;
}
/** {@inheritDoc} */
public void addAdditionalStateProvider(final AdditionalStateProvider additionalStateProvider)
throws OrekitException {
// check if the name is already used
if (isAdditionalStateManaged(additionalStateProvider.getName())) {
// this additional state is already registered, complain
throw new OrekitException(
OrekitMessages.ADDITIONAL_STATE_NAME_ALREADY_IN_USE, additionalStateProvider.getName());
}
// this is really a new name, add it
additionalStateProviders.add(additionalStateProvider);
}