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The NetCDF-Java Library is a Java interface to NetCDF files, as well as to many other types of scientific data formats.
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/*
 * Copyright 1998-2014 University Corporation for Atmospheric Research/Unidata
 *
 *   Portions of this software were developed by the Unidata Program at the
 *   University Corporation for Atmospheric Research.
 *
 *   Access and use of this software shall impose the following obligations
 *   and understandings on the user. The user is granted the right, without
 *   any fee or cost, to use, copy, modify, alter, enhance and distribute
 *   this software, and any derivative works thereof, and its supporting
 *   documentation for any purpose whatsoever, provided that this entire
 *   notice appears in all copies of the software, derivative works and
 *   supporting documentation.  Further, UCAR requests that the user credit
 *   UCAR/Unidata in any publications that result from the use of this
 *   software or in any product that includes this software. The names UCAR
 *   and/or Unidata, however, may not be used in any advertising or publicity
 *   to endorse or promote any products or commercial entity unless specific
 *   written permission is obtained from UCAR/Unidata. The user also
 *   understands that UCAR/Unidata is not obligated to provide the user with
 *   any support, consulting, training or assistance of any kind with regard
 *   to the use, operation and performance of this software nor to provide
 *   the user with any updates, revisions, new versions or "bug fixes."
 *
 *   THIS SOFTWARE IS PROVIDED BY UCAR/UNIDATA "AS IS" AND ANY EXPRESS OR
 *   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 *   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 *   DISCLAIMED. IN NO EVENT SHALL UCAR/UNIDATA BE LIABLE FOR ANY SPECIAL,
 *   INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
 *   FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
 *   NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 *   WITH THE ACCESS, USE OR PERFORMANCE OF THIS SOFTWARE.
 */

package ucar.atd.dorade;

import java.io.RandomAccessFile;
import java.util.Calendar;
import java.util.Date;

class DoradeRYIB extends DoradeDescriptor {

  private int sweepNumber;
  private Date rayTime;
  private float azimuth;
  private float elevation;
  private float lastPeakPower; // kW
  private float scanRate; // deg/s
  private int rayStatus; // 0 normal, 1 transition, 2 bad

  public DoradeRYIB(RandomAccessFile file, boolean littleEndianData, DoradeVOLD vold) throws DescriptorException {
    byte[] data = readDescriptor(file, littleEndianData, "RYIB");

    //
    // unpack
    //
    sweepNumber = grabInt(data, 8);
    int julianDay = grabInt(data, 12);
    int hour = grabShort(data, 16);
    int minute = grabShort(data, 18);
    int second = grabShort(data, 20);
    int milliSecond = grabShort(data, 22);
    azimuth = grabFloat(data, 24);
    elevation = grabFloat(data, 28);
    lastPeakPower = grabFloat(data, 32);
    scanRate = grabFloat(data, 36);
    rayStatus = grabInt(data, 40);

    //
    // Assemble the ray time, starting from the volume time, setting the
    // hh:mm:ss, and adjusting up by a day if we crossed a day bound
    // since the beginning of the volume.  Why didn't they just put
    // a complete time here?  Julian day without the year is useless!
    // GRRR...
    //
    Date volumeTime = vold.getVolumeTime();
    Calendar volumeCalendar = Calendar.getInstance(TZ_UTC);
    volumeCalendar.setTime(volumeTime);

    Calendar rayTimeCalendar = (Calendar) volumeCalendar.clone();
    rayTimeCalendar.set(Calendar.HOUR_OF_DAY, hour);
    rayTimeCalendar.set(Calendar.MINUTE, minute);
    rayTimeCalendar.set(Calendar.SECOND, second);
    rayTimeCalendar.set(Calendar.MILLISECOND, milliSecond);

    if (rayTimeCalendar.before(volumeCalendar))
      rayTimeCalendar.add(Calendar.DAY_OF_MONTH, 1);

    rayTime = rayTimeCalendar.getTime();

    //
    // debugging output
    //
    if (verbose)
      System.out.println(this);
  }

  public String toString() {
    String s = "RYIB\n";
    s += "  sweep number: " + sweepNumber + "\n";
    s += "  ray time: " + formatDate(rayTime) + "\n";
    s += "  azimuth: " + azimuth + "\n";
    s += "  elevation: " + elevation + "\n";
    s += "  last peak transmitted power: " + lastPeakPower + "\n";
    s += "  scan rate: " + scanRate + "\n";
    s += "  ray status: " + rayStatus;
    return s;
  }

  public float getAzimuth() {
    return azimuth;
  }

  public float getElevation() {
    return elevation;
  }

  // unidata added
  public Date getRayTime() {
    return rayTime;
  }

}