Beispiel #1
0
  /** Calculate the rectangle occupied by the data */
  protected Rectangle getDataRectangle(Graphics g, Rectangle r) {
    Axis a;
    int waxis;
    int x = r.x;
    int y = r.y;
    int width = r.width;
    int height = r.height;

    for (int i = 0; i < axis.size(); i++) {
      a = ((Axis) axis.elementAt(i));

      waxis = a.getAxisWidth(g);

      switch (a.getAxisPos()) {
        case Axis.LEFT:
          x += waxis;
          width -= waxis;
          break;
        case Axis.RIGHT:
          width -= waxis;
          break;
        case Axis.TOP:
          y += waxis;
          height -= waxis;
          break;
        case Axis.BOTTOM:
          height -= waxis;
          break;
      }
    }

    return new Rectangle(x, y, width, height);
  }
Beispiel #2
0
  /**
   * Detach a previously attached Axis.
   *
   * @param the Axis to dettach.
   */
  public void detachAxis(Axis a) {

    if (a != null) {
      a.detachAll();
      a.g2d = null;
      axis.removeElement(a);
    }
  }
Beispiel #3
0
  /**
   * Create and attach an Axis to the graph. The position of the axis is one of Axis.TOP,
   * Axis.BOTTOM, Axis.LEFT or Axis.RIGHT.
   *
   * @param position Position of the axis in the drawing window.
   */
  public Axis createAxis(int position) {
    Axis a;

    try {
      a = new Axis(position);
      a.g2d = this;
      axis.addElement(a);
    } catch (Exception e) {
      System.out.println("Failed to create Axis");
      e.printStackTrace();
      return null;
    }

    return a;
  }
Beispiel #4
0
  /**
   * Attach a previously created Axis. Only Axes that have been attached will be drawn
   *
   * @param the Axis to attach.
   */
  public void attachAxis(Axis a) {

    if (a == null) return;

    try {
      axis.addElement(a);
      a.g2d = this;
    } catch (Exception e) {
      System.out.println("Failed to attach Axis");
      e.printStackTrace();
    }
  }
Beispiel #5
0
  /**
   * Draw the Axis. As each axis is drawn and aligned less of the canvas is avaliable to plot the
   * data. The returned Rectangle is the canvas area that the data is plotted in.
   */
  protected Rectangle drawAxis(Graphics g, Rectangle r) {
    Axis a;
    int waxis;
    Rectangle dr;
    int x;
    int y;
    int width;
    int height;

    if (square) r = ForceSquare(g, r);

    dr = getDataRectangle(g, r);

    x = dr.x;
    y = dr.y;
    width = dr.width;
    height = dr.height;

    if (clearAll) {
      Color c = g.getColor();
      g.setColor(DataBackground);
      g.fillRect(x, y, width, height);
      g.setColor(c);
    }

    // Draw a frame around the data area (If requested)
    if (frame) drawFrame(g, x, y, width, height);

    // Now draw the axis in the order specified aligning them with the final
    // data area.
    for (int i = 0; i < axis.size(); i++) {
      a = ((Axis) axis.elementAt(i));

      a.data_window = new Dimension(width, height);

      switch (a.getAxisPos()) {
        case Axis.LEFT:
          r.x += a.width;
          r.width -= a.width;
          a.positionAxis(r.x, r.x, y, y + height);
          if (r.x == x) {
            a.gridcolor = gridcolor;
            a.drawgrid = drawgrid;
            a.zerocolor = zerocolor;
            a.drawzero = drawzero;
          }

          a.drawAxis(g);

          a.drawgrid = false;
          a.drawzero = false;

          break;
        case Axis.RIGHT:
          r.width -= a.width;
          a.positionAxis(r.x + r.width, r.x + r.width, y, y + height);
          if (r.x + r.width == x + width) {
            a.gridcolor = gridcolor;
            a.drawgrid = drawgrid;
            a.zerocolor = zerocolor;
            a.drawzero = drawzero;
          }

          a.drawAxis(g);

          a.drawgrid = false;
          a.drawzero = false;

          break;
        case Axis.TOP:
          r.y += a.width;
          r.height -= a.width;
          a.positionAxis(x, x + width, r.y, r.y);
          if (r.y == y) {
            a.gridcolor = gridcolor;
            a.drawgrid = drawgrid;
            a.zerocolor = zerocolor;
            a.drawzero = drawzero;
          }

          a.drawAxis(g);

          a.drawgrid = false;
          a.drawzero = false;

          break;
        case Axis.BOTTOM:
          r.height -= a.width;
          a.positionAxis(x, x + width, r.y + r.height, r.y + r.height);
          if (r.y + r.height == y + height) {
            a.gridcolor = gridcolor;
            a.drawgrid = drawgrid;
            a.zerocolor = zerocolor;
            a.drawzero = drawzero;
          }

          a.drawAxis(g);

          a.drawgrid = false;
          a.drawzero = false;

          break;
      }
    }

    return r;
  }
Beispiel #6
0
  /**
   * Force the plot to have an aspect ratio of 1 by forcing the axes to have the same range. If the
   * range of the axes are very different some extremely odd things can occur. All axes are forced
   * to have the same range, so more than 2 axis is pointless.
   */
  protected Rectangle ForceSquare(Graphics g, Rectangle r) {
    Axis a;
    Rectangle dr;
    int x = r.x;
    int y = r.y;
    int width = r.width;
    int height = r.height;

    double xmin;
    double xmax;
    double ymin;
    double ymax;

    double xrange = 0.0;
    double yrange = 0.0;
    double range;

    double aspect;

    if (dataset == null | dataset.isEmpty()) return r;

    /*
     **          Force all the axis to have the same range. This of course
     **          means that anything other than one xaxis and one yaxis
     **          is a bit pointless.
     */
    for (int i = 0; i < axis.size(); i++) {
      a = (Axis) axis.elementAt(i);
      range = a.maximum - a.minimum;
      if (a.isVertical()) {
        yrange = Math.max(range, yrange);
      } else {
        xrange = Math.max(range, xrange);
      }
    }

    if (xrange <= 0 | yrange <= 0) return r;

    if (xrange > yrange) range = xrange;
    else range = yrange;

    for (int i = 0; i < axis.size(); i++) {
      a = (Axis) axis.elementAt(i);
      a.maximum = a.minimum + range;
    }
    /*
     **          Get the new data rectangle
     */
    dr = getDataRectangle(g, r);
    /*
     **          Modify the data rectangle so that it is square.
     */
    if (dr.width > dr.height) {
      x += (dr.width - dr.height) / 2.0;
      width -= dr.width - dr.height;
    } else {
      y += (dr.height - dr.width) / 2.0;
      height -= dr.height - dr.width;
    }

    return new Rectangle(x, y, width, height);
  }