AdamsBashforthIntegratorBuilder.java

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package org.orekit.propagation.conversion;

import org.hipparchus.ode.AbstractIntegrator;
import org.hipparchus.ode.nonstiff.AdamsBashforthIntegrator;
import org.orekit.orbits.Orbit;
import org.orekit.orbits.OrbitType;
import org.orekit.propagation.numerical.NumericalPropagator;

/** Builder for AdamsBashforthIntegrator.
 * @author Pascal Parraud
 * @since 6.0
 */
public class AdamsBashforthIntegratorBuilder extends AbstractVariableStepIntegratorBuilder {

    /** Number of steps. */
    private final int nSteps;

    /** Build a new instance. Should only use this constructor with {@link Orbit}.
     * @param nSteps number of steps
     * @param minStep minimum step size (s)
     * @param maxStep maximum step size (s)
     * @param dP position error (m)
     * @see AdamsBashforthIntegrator
     * @see NumericalPropagator#tolerances(double, Orbit, OrbitType)
     */
    public AdamsBashforthIntegratorBuilder(final int nSteps, final double minStep,
                                           final double maxStep, final double dP) {
        super(minStep, maxStep, dP);
        this.nSteps  = nSteps;
    }

    /** Build a new instance.
     * @param nSteps number of steps
     * @param minStep minimum step size (s)
     * @param maxStep maximum step size (s)
     * @param dP position error (m)
     * @param dV velocity error (m/s)
     *
     * @since 12.2
     * @see AdamsBashforthIntegrator
     * @see NumericalPropagator#tolerances(double, Orbit, OrbitType)
     */
    public AdamsBashforthIntegratorBuilder(final int nSteps, final double minStep,
                                           final double maxStep, final double dP, final double dV) {
        super(minStep, maxStep, dP, dV);
        this.nSteps  = nSteps;
    }

    /** {@inheritDoc} */
    @Override
    public AbstractIntegrator buildIntegrator(final Orbit orbit, final OrbitType orbitType) {
        final double[][] tol = getTolerances(orbit, orbitType);
        return new AdamsBashforthIntegrator(nSteps, minStep, maxStep, tol[0], tol[1]);
    }

}