TGDuration.java

/*
 * Created on 29-nov-2005
 * 
 * TODO To change the template for this generated file go to Window -
 * Preferences - Java - Code Style - Code Templates
 */
package org.herac.tuxguitar.song.models;

/**
 * @author julian
 * 
 *         TODO To change the template for this generated type comment go to
 *         Window - Preferences - Java - Code Style - Code Templates
 */
public class TGDuration {
  /**
   * Corchea.
   */
  public static final int EIGHTH = 8;
  /**
   * Blanca.
   */
  public static final int HALF = 2;

  /**
   * Negra.
   */
  public static final int QUARTER = 4;

  /**
   * tiempo por defecto de la Negra.
   */
  public static final long QUARTER_TIME = 960;

  /**
   * Semi-Corchea.
   */
  public static final int SIXTEENTH = 16;

  /**
   * Semi-Fusa.
   */
  public static final int SIXTY_FOURTH = 64;

  /**
   * Fusa.
   */
  public static final int THIRTY_SECOND = 32;

  /**
   * Redonda.
   */
  public static final int WHOLE = 1;

  public static TGDuration fromTime(long time) {
    TGDuration duration = new TGDuration();
    duration.setValue(TGDuration.SIXTY_FOURTH);
    duration.setDotted(false);
    duration.setDoubleDotted(false);
    duration.setDivision(TGDivisionType.DEFAULT);
    return fromTime(time, duration);
  }

  public static TGDuration fromTime(long time, TGDuration minDuration) {
    return fromTime(time, minDuration, 10);
  }

  public static TGDuration fromTime(long time, TGDuration minimum, int diff) {
    TGDuration duration = minimum.clone();
    TGDuration tmpDuration = new TGDuration();
    tmpDuration.setValue(TGDuration.WHOLE);
    tmpDuration.setDotted(true);
    boolean finish = false;
    while (!finish) {
      long tmpTime = tmpDuration.getTime();
      if (tmpTime - diff <= time) {
        // if(tmpTime > duration.getTime()){
        if (Math.abs(tmpTime - time) < Math.abs(duration.getTime() - time)) {
          duration = tmpDuration.clone();
        }
      }
      if (tmpDuration.isDotted()) {
        tmpDuration.setDotted(false);
      } else if (tmpDuration.getDivision().isEqual(TGDivisionType.NORMAL)) {
        tmpDuration.setDivision(TGDivisionType.DEFAULT);
      } else {
        tmpDuration.setValue(tmpDuration.getValue() * 2);
        tmpDuration.setDotted(true);
        tmpDuration.setDivision(TGDivisionType.NORMAL);

      }
      if (tmpDuration.getValue() > TGDuration.SIXTY_FOURTH) {
        finish = true;
      }
    }
    return duration;
  }

  /**
   * DivisionType.
   */
  private TGDivisionType divisionType = TGDivisionType.NORMAL;

  /**
   * Puntillo.
   */
  private boolean dotted = false;

  /**
   * Doble Puntillo.
   */
  private boolean doubleDotted = false;

  /**
   * Valor.
   */
  private int value = QUARTER;

  @Override
  public TGDuration clone() {
    TGDuration duration = new TGDuration();

    duration.setValue(this.value);
    duration.setDotted(this.dotted);
    duration.setDoubleDotted(this.doubleDotted);
    duration.setDivision(this.divisionType);

    return duration;
  }

  public void setDivision(final TGDivisionType newDivision) {
    this.divisionType = newDivision;
  }

  public TGDivisionType getDivision() {
    return this.divisionType;
  }

  /*
   * public int log2(){ return (int)((Math.log(getValue() ) / Math.log(2.0)) +
   * 0.5f ); }
   */
  public int getIndex() {
    int index = 0;
    int value = this.value;
    while ((value = (value >> 1)) > 0) {
      index++;
    }
    return index;
  }

  public long getTime() {
    long time = (long) (QUARTER_TIME * (4.0f / this.value));
    if (this.dotted) {
      time += time / 2;
    } else if (this.doubleDotted) {
      time += ((time / 4) * 3);
    }
    return this.divisionType.convertTime(time);
  }

  public int getValue() {
    return this.value;
  }

  public boolean isDotted() {
    return this.dotted;
  }

  public boolean isDoubleDotted() {
    return this.doubleDotted;
  }

  public boolean isEqual(TGDuration d) {
    return (getValue() == d.getValue() && isDotted() == d.isDotted()
        && isDoubleDotted() == d.isDoubleDotted() && getDivision().isEqual(
        d.getDivision()));
  }

  public void setDotted(boolean dotted) {
    this.dotted = dotted;
  }

  public void setDoubleDotted(boolean doubleDotted) {
    this.doubleDotted = doubleDotted;
  }

  // TODO should TGDuration be an Enum?
  public void setValue(int value) {
    this.value = value;
  }

}