PerfectClockModel.java

/* Copyright 2022-2025 Thales Alenia Space
 * Licensed to CS GROUP (CS) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * CS licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
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 */
package org.orekit.time;

import org.hipparchus.CalculusFieldElement;

/** Clock model for perfect clock with constant zero offset.
 * @author Luc Maisonobe
 * @since 12.1
 */
public class PerfectClockModel implements ClockModel {

    /** {@inheritDoc} */
    @Override
    public AbsoluteDate getValidityStart() {
        return AbsoluteDate.PAST_INFINITY;
    }

    /** {@inheritDoc} */
    @Override
    public AbsoluteDate getValidityEnd() {
        return AbsoluteDate.FUTURE_INFINITY;
    }

    /** {@inheritDoc} */
    @Override
    public ClockOffset getOffset(final AbsoluteDate date) {
        return new ClockOffset(date, 0, 0, 0);
    }

    /** {@inheritDoc} */
    @Override
    public <T extends CalculusFieldElement<T>> FieldClockOffset<T> getOffset(final FieldAbsoluteDate<T> date) {
        final T zero = date.getField().getZero();
        return new FieldClockOffset<>(date, zero, zero, zero);
    }

}