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package tim.prune.data;
public class FractionalSeconds
{
private final long _numerator;
private final byte _divisorDigits;
public FractionalSeconds(long inDegrees, long inDegFrac, int inDigits)
{
// Limit digits to maximum 13 to stop longs from overflowing
int digits = inDigits;
long degFrac = inDegFrac;
while (digits > 13)
{
digits--;
degFrac = degFrac / 10L;
}
long degDenom = getMultiplier(digits);
_numerator = (inDegrees * degDenom + degFrac) * 60L * 60L;
_divisorDigits = (byte) digits;
}
public FractionalSeconds(long inDegrees, long inMinutes, long inMinFrac, int inDigits)
{
long minDenom = getMultiplier(inDigits);
_numerator = ((inDegrees * 60L + inMinutes) * minDenom + inMinFrac) * 60L;
_divisorDigits = (byte) inDigits;
}
public FractionalSeconds(long inDegrees, long inMinutes, long inSeconds, long inSecFrac, int inDigits)
{
long secDenom = getMultiplier(inDigits);
_numerator = ((inDegrees * 60L + inMinutes) * 60L + inSeconds) * secDenom + inSecFrac;
_divisorDigits = (byte) inDigits;
}
public static FractionalSeconds fromDouble(double inDegrees, int inNumDigits)
{
double value = Math.abs(inDegrees) * getMultiplier(inNumDigits);
long numerator = (long) (value * 60.0 * 60.0);
return new FractionalSeconds(numerator, (byte) inNumDigits);
}
private FractionalSeconds(long inNumerator, byte inNumDigits)
{
_numerator = inNumerator;
_divisorDigits = inNumDigits;
}
public int getTotalSeconds()
{
long seconds = _numerator / getMultiplier(_divisorDigits);
return (int) seconds;
}
public int getWholeDegrees() {
return getTotalSeconds() / 60 / 60;
}
public int getWholeMinutes() {
return (getTotalSeconds() / 60) % 60;
}
public int getWholeSeconds() {
return getTotalSeconds() % 60;
}
public String getFractionDegrees() {
return getFractionString(_numerator / 60L / 60L, _divisorDigits);
}
public String getFractionDegrees(int inNumDigits)
{
if (inNumDigits != _divisorDigits) {
return roundToSeconds(inNumDigits).divideBy(3600L).getFractionSeconds();
}
return getFractionDegrees();
}
public String getFractionMinutes() {
return getFractionString(_numerator / 60L, _divisorDigits);
}
public String getFractionMinutes(int inNumDigits)
{
if (inNumDigits != _divisorDigits) {
return roundToSeconds(inNumDigits).divideBy(60L).getFractionSeconds();
}
return getFractionMinutes();
}
public String getFractionSeconds() {
return getFractionString(_numerator, _divisorDigits);
}
public String getFractionSeconds(int inNumDigits) {
return roundToSeconds(inNumDigits).getFractionSeconds();
}
public double getDouble() {
return _numerator * 1.0 / getMultiplier(_divisorDigits) / 3600.0;
}
public FractionalSeconds roundToDegrees(int inNumDigits) {
return roundTo(60L * 60L, inNumDigits);
}
public FractionalSeconds roundToMinutes(int inNumDigits) {
return roundTo(60L, inNumDigits);
}
public FractionalSeconds roundToSeconds(int inNumDigits) {
return roundTo(1L, inNumDigits);
}
private FractionalSeconds roundTo(long inMultFactor, int inNumDigits)
{
if (inNumDigits > _divisorDigits)
{
long num = _numerator * getMultiplier(inNumDigits - _divisorDigits);
return new FractionalSeconds(num, (byte) inNumDigits);
}
else if (inNumDigits < _divisorDigits)
{
long factor = getMultiplier(_divisorDigits - inNumDigits);
long num = _numerator + factor / 2L * inMultFactor;
return new FractionalSeconds(num / factor, (byte) inNumDigits);
}
return this;
}
private FractionalSeconds divideBy(long divisor) {
return new FractionalSeconds(_numerator / divisor, _divisorDigits);
}
private static String getFractionString(long inNumerator, byte inDivisorDigits)
{
if (inDivisorDigits == 0) {
return "";
}
long factor = getMultiplier(inDivisorDigits);
long remainder = inNumerator % factor;
return String.format("%0" + inDivisorDigits + "d", remainder);
}
/** Return the multiplier given the number of digits */
private static long getMultiplier(int inNumDigits)
{
int numDigits = inNumDigits;
long value = 1L;
while (numDigits > 0) {
numDigits--;
value = value * 10L;
}
return value;
}
public boolean isWithinOneEightyDegrees()
{
final long oneEighty = 180L * 60L * 60L * getMultiplier(_divisorDigits);
return _numerator <= oneEighty;
}
public FractionalSeconds wrapToThreeSixtyDegrees() {
return new FractionalSeconds(_numerator % getThreeSixtyDegrees(), _divisorDigits);
}
private long getThreeSixtyDegrees() {
return 360L * 60L * 60L * getMultiplier(_divisorDigits);
}
public FractionalSeconds invert() {
return new FractionalSeconds(getThreeSixtyDegrees() - _numerator, _divisorDigits);
}
}
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