/**
 * This type was created in VisualAge.
 */
class GearChart {
  private double tireWidth = 0;
  private double tireSection = 0;
  private double tireDiameter = 0;
  private int[] gearSets = new int[14];
  private double[] gearRatios = new double[7];
  private double[][] mphAtRpm = new double[6][36];
  private int maxg = 0;
  private boolean m928 = false;
  private String boxName = null;
/**
 * GearChart constructor comment.
 */
public GearChart() {

  // initialize all variables
  
  tireWidth = 0.0;
  tireSection = 0.0;
  tireDiameter = 0.0;
  for (int i = 0; i < gearSets.length; i++)
    gearSets[i] = 0;
  for (int i = 0; i < gearRatios.length; i++)
    gearRatios[i] = 0.0;
  for (int i = 0; i < gearRatios.length - 1; i++) {
    for (int j = 0; j < 36; j++)
      mphAtRpm[i][j] = 0.0;
  }
  maxg = 0;
  m928 = false;
}
/**
 * This method was created in VisualAge.
 */
public void compute(boolean sets) throws BadGearChartValue {
  double numer, denom;

  // check for valid variables

  if (tireWidth < 100.0)          // invalid tire width
    throw new BadGearChartValue("Tire Width Invalid");
  if (tireSection < 10.0)         // invalid tire section
    throw new BadGearChartValue("Tire Section Invalid");
  if (tireDiameter < 10.0)        // invalid tire diameter
    throw new BadGearChartValue("Tire Diameter Invalid");

  if (sets) {
    
    // check for valid entries
    
    for (int i = 0; i < 8; i++)     // check for at least four gears entered
      if (gearSets[i] == 0) throw new BadGearChartValue("Gear Set " + i + "Invalid");
    if (gearSets[12] == 0 || gearSets[13] == 0)   // check for non-zero final drive
      throw new BadGearChartValue("Final Drive Invalid");

  // fill in gear ratio array

    for (int i = 0, j = 0; i < 7; i++) {
      if (gearSets[j] == 0) {           // no more gears
        gearRatios[i] = 0.0;
        j += 2;
        continue;
      }
      numer = (double) gearSets[j];
      denom = (double) gearSets[j+1];
      if (m928 && i < 5) {            // 1-4 drive through 5th
        numer = numer * (double) gearSets[9]; // multiply by 5th gear denominator
        denom = denom * (double) gearSets[8]; // nultiply by 5th gear numerator
      }
      gearRatios[i] = numer / denom;
      j += 2;
    }
  } else {
    for (int i = 0; i < 4; i++)
      if (gearRatios[i] < 0.01) throw new BadGearChartValue("Gear " + i + "Invalid");
  }

  // calculate tire section decimal (from percentage) 
  double ar = tireSection / 100.0;

  // check if a fifth and/or sixth gear has been entered
  maxg = 0;
  if (sets) {
    if (gearSets[8] == 0)
      maxg = 4;
    else if (gearSets[10] == 0)
        maxg = 5;
       else maxg = 6;
  } else {
    if (gearRatios[4] <= 0.01)
      maxg = 4;
    else if (gearRatios[5] <= 0.01)
        maxg = 5;
       else maxg = 6;
  }

  // main body of calculation to fill in mph values for each rpm from 1000 to 8000
  // in increments of 200 rpm, for each gear.

  boolean adjustGrat = false;
  if (gearRatios[0] > 1.0)  // 1st gear should be > 1, need to reverse ratio
    adjustGrat = true;
  
  for (int rpm = 1000, j = 0; rpm <= 8000; j++) {
    for (int i = 0; i < maxg; i++) {
      double grat = gearRatios[i];
      double rpmile = (20168.0 / (((tireWidth * ar) / 12.7) + (tireDiameter - 0.62)));
      if (adjustGrat)
        mphAtRpm[i][j] = (((rpm * (1/grat) * (1/gearRatios[6])) / rpmile) * 60.0);
      else
        mphAtRpm[i][j] = (((rpm * grat * gearRatios[6]) / rpmile) * 60.0);
    }
    rpm += 200;
  }
}
/**
 * This method was created in VisualAge.
 * @return java.lang.String
 */
public String getBoxName() {
  return boxName;
}
/**
 * This method was created in VisualAge.
 * @return double
 * @param i int
 */
public double getGearRatios(int i) {
  return gearRatios[i];
}
/**
 * This method was created in VisualAge.
 * @return int
 * @param i int
 */
public int getGearSets(int i) {
  return gearSets[i];
}
/**
 * This method was created in VisualAge.
 * @return boolean
 */
public boolean getM928() {
  return m928;
}
/**
 * This method was created in VisualAge.
 * @return int
 */
public int getMaxg() {
  return maxg;
}
/**
 * This method was created in VisualAge.
 * @return double
 * @param row int
 * @param col int
 */
public double getMphAtRpm(int col, int row) {
  return mphAtRpm[col][row];
}
/**
 * This method was created in VisualAge.
 * @return double
 */
public double getTireDiameter() {
  return tireDiameter;
}
/**
 * This method was created in VisualAge.
 * @return double
 */
public double getTireSection() {
  return tireSection;
}
/**
 * This method was created in VisualAge.
 * @return double
 */
public double getTireWidth() {
  return tireWidth;
}
/**
 * This method was created in VisualAge.
 * @param s java.lang.String
 */
public void setBoxName(String s) {
  boxName = new String(s);
}
/**
 * This method was created in VisualAge.
 * @param i int
 * @param value int
 */
public void setGearRatios(int i, double value) {
  if (i < gearRatios.length)
    gearRatios[i] = value;
}
/**
 * This method was created in VisualAge.
 * @param i int
 * @param value int
 */
public void setGearSets(int i, int value) {
  if (i < gearSets.length)
    gearSets[i] = value;
}
/**
 * This method was created in VisualAge.
 * @param flag boolean
 */
public void setM928(boolean flag) {
  m928 = flag;
}
/**
 * This method was created in VisualAge.
 * @param diameter double
 */
public void setTireDiameter(double diameter) {
  tireDiameter = diameter;
}
/**
 * This method was created in VisualAge.
 * @param section double
 */
public void setTireSection(double section) {
  tireSection = section;
}
/**
 * This method was created in VisualAge.
 * @param width double
 */
public void setTireWidth(double width) {
  tireWidth = width;
}
}