org.apache.fop.afp.modca.AxisOrientation Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.
*/
/* $Id$ */
package org.apache.fop.afp.modca;
import java.io.IOException;
import java.io.OutputStream;
/**
* Represents the 4 bytes that specify the axis-area rotation reference coordinate system
*/
public enum AxisOrientation {
RIGHT_HANDED_0(Rotation.ROTATION_0, Rotation.ROTATION_90),
RIGHT_HANDED_90(Rotation.ROTATION_90, Rotation.ROTATION_180),
RIGHT_HANDED_180(Rotation.ROTATION_180, Rotation.ROTATION_270),
RIGHT_HANDED_270(Rotation.ROTATION_270, Rotation.ROTATION_0);
/**
* The object area's X-axis rotation from the X axis of the reference coordinate system
*/
private final Rotation xoaOrent;
/**
* The object area's Y-axis rotation from the Y axis of the reference coordinate system
*/
private final Rotation yoaOrent;
public void writeTo(byte[] out, int offset) {
xoaOrent.writeTo(out, offset);
yoaOrent.writeTo(out, offset + 2);
}
private AxisOrientation(Rotation xoaOrent, Rotation yoaOrent) {
this.xoaOrent = xoaOrent;
this.yoaOrent = yoaOrent;
}
/**
* Writes the axis orientation area bytes to the output stream.
*
* @param stream the output stream to write to
* @throws IOException if an I/O error occurs
*/
public void writeTo(OutputStream stream) throws IOException {
byte[] data = new byte[4];
writeTo(data, 0);
stream.write(data);
}
/**
* Gets the right-handed axis orientation object for a given orientation in degrees.
*
* @param orientation the orientation in degrees
* @return the {@link AxisOrientation} object
*/
public static AxisOrientation getRightHandedAxisOrientationFor(int orientation) {
switch (orientation) {
case 0: return RIGHT_HANDED_0;
case 90: return RIGHT_HANDED_90;
case 180: return RIGHT_HANDED_180;
case 270: return RIGHT_HANDED_270;
default: throw new IllegalArgumentException(
"The orientation must be one of the values 0, 90, 180, 270");
}
}
}