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The Apache Commons Codec package contains simple encoder and decoders for various formats such as Base64 and Hexadecimal. In addition to these widely used encoders and decoders, the codec package also maintains a collection of phonetic encoding utilities.
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/*
 *  ====================================================================
 *    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.
 * ====================================================================
 */

package org.apache.poi.xddf.usermodel.chart;

import org.apache.poi.ooxml.util.POIXMLUnits;
import org.apache.poi.util.Internal;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTView3D;

public class XDDFView3D {
    private final CTView3D view3D;

    @Internal
    protected XDDFView3D(CTView3D view3D) {
        this.view3D = view3D;
    }

    public Byte getXRotationAngle() {
        if (view3D.isSetRotX()) {
            return view3D.getRotX().getVal();
        } else {
            return null;
        }
    }

    public void setXRotationAngle(Byte rotation) {
        if (rotation == null) {
            if (view3D.isSetRotX()) {
                view3D.unsetRotX();
            }
        } else {
            if (rotation < -90 || 90 < rotation) {
                throw new IllegalArgumentException("rotation must be between -90 and 90");
            }
            if (view3D.isSetRotX()) {
                view3D.getRotX().setVal(rotation);
            } else {
                view3D.addNewRotX().setVal(rotation);
            }
        }
    }

    public Integer getYRotationAngle() {
        if (view3D.isSetRotY()) {
            return view3D.getRotY().getVal();
        } else {
            return null;
        }
    }

    public void setYRotationAngle(Integer rotation) {
        if (rotation == null) {
            if (view3D.isSetRotY()) {
                view3D.unsetRotY();
            }
        } else {
            if (rotation < 0 || 360 < rotation) {
                throw new IllegalArgumentException("rotation must be between 0 and 360");
            }
            if (view3D.isSetRotY()) {
                view3D.getRotY().setVal(rotation);
            } else {
                view3D.addNewRotY().setVal(rotation);
            }
        }
    }

    public Boolean hasRightAngleAxes() {
        if (view3D.isSetRAngAx()) {
            return view3D.getRAngAx().getVal();
        } else {
            return null;
        }
    }

    public void setRightAngleAxes(Boolean rightAngles) {
        if (rightAngles == null) {
            if (view3D.isSetRAngAx()) {
                view3D.unsetRAngAx();
            }
        } else {
            if (view3D.isSetRAngAx()) {
                view3D.getRAngAx().setVal(rightAngles);
            } else {
                view3D.addNewRAngAx().setVal(rightAngles);
            }
        }
    }

    public Short getPerspectiveAngle() {
        if (view3D.isSetPerspective()) {
            return view3D.getPerspective().getVal();
        } else {
            return null;
        }
    }

    public void setPerspectiveAngle(Short perspective) {
        if (perspective == null) {
            if (view3D.isSetPerspective()) {
                view3D.unsetPerspective();
            }
        } else {
            if (perspective < 0 || 240 < perspective) {
                throw new IllegalArgumentException("perspective must be between 0 and 240");
            }
            if (view3D.isSetPerspective()) {
                view3D.getPerspective().setVal(perspective);
            } else {
                view3D.addNewPerspective().setVal(perspective);
            }
        }
    }

    public Integer getDepthPercent() {
        return (view3D.isSetDepthPercent()) ? POIXMLUnits.parsePercent(view3D.getDepthPercent().xgetVal()) : null;
    }

    public void setDepthPercent(Integer percent) {
        if (percent == null) {
            if (view3D.isSetDepthPercent()) {
                view3D.unsetDepthPercent();
            }
        } else {
            if (percent < 20 || 2000 < percent) {
                throw new IllegalArgumentException("percent must be between 20 and 2000");
            }
            if (view3D.isSetDepthPercent()) {
                view3D.getDepthPercent().setVal(percent);
            } else {
                view3D.addNewDepthPercent().setVal(percent);
            }
        }
    }

    public Integer getHPercent() {
        return (view3D.isSetHPercent()) ? POIXMLUnits.parsePercent(view3D.getHPercent().xgetVal()) : null;
    }

    public void setHPercent(Integer percent) {
        if (percent == null) {
            if (view3D.isSetHPercent()) {
                view3D.unsetHPercent();
            }
        } else {
            if (percent < 5 || 500 < percent) {
                throw new IllegalArgumentException("percent must be between 5 and 500");
            }
            if (view3D.isSetHPercent()) {
                view3D.getHPercent().setVal(percent);
            } else {
                view3D.addNewHPercent().setVal(percent);
            }
        }
    }

}