ConstantOffsetTimeScale.java
/* Copyright 2002-2024 Luc Maisonobe
* 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
* limitations under the License.
*/
package org.orekit.time;
import org.hipparchus.CalculusFieldElement;
/** Base class for time scales with constant offset with respecto to TAI.
* @author Luc Maisonobe
* @since 12.1
*/
public class ConstantOffsetTimeScale implements TimeScale {
/** Serializable UID. */
private static final long serialVersionUID = 20240321L;
/** Name of the time scale. */
private final String name;
/** Offset from TAI. */
private final double offset;
/** Simple constructor.
* @param name name of the time scale
* @param offset offset from TAI
*/
protected ConstantOffsetTimeScale(final String name, final double offset) {
this.name = name;
this.offset = offset;
}
/** {@inheritDoc} */
@Override
public double offsetFromTAI(final AbsoluteDate date) {
return offset;
}
/** {@inheritDoc} */
@Override
public <T extends CalculusFieldElement<T>> T offsetFromTAI(final FieldAbsoluteDate<T> date) {
return date.getField().getZero().newInstance(offset);
}
/** {@inheritDoc} */
@Override
public double offsetToTAI(final DateComponents date, final TimeComponents time) {
return -offset;
}
/** {@inheritDoc} */
public String getName() {
return name;
}
/** {@inheritDoc} */
public String toString() {
return getName();
}
}