Exemple #1
0
  public void paintComponent(Graphics g) {
    super.paintComponent(g);

    calcSizes();
    drawAxes(g);
    calcMaxes();
    calcTickIncrements();
    drawXTicks(g);
    drawYTicks(g);

    int t = 0;
    int prevX = 0, prevY1 = 0, prevY2 = 0;

    for (DataPair pair : data) {

      int h = pair.getH();
      int p = pair.getP();

      // calculate where to put the dots
      int x = xVal(t, maxT);
      int y1 = yVal(h, maxH);
      int y2 = yVal(p, maxP);

      // draw herbivore dot
      g.setColor(Color.BLUE);
      g.fillOval(x, y1, 2 * r, 2 * r);

      // draw a line connecting this dot to the last
      if (prevX != 0) {
        g.drawLine(prevX + r, prevY1 + r, x + r, y1 + r);
      }

      // draw predator dot
      g.setColor(Color.RED);
      g.fillOval(x, y2, 2 * r, 2 * r);

      // draw a line connecting this dot to the last
      if (prevX != 0) {
        g.drawLine(prevX + r, prevY2 + r, x + r, y2 + r);
      }

      // remember these dots
      prevX = x;
      prevY1 = y1;
      prevY2 = y2;

      g.setColor(Color.BLACK);

      t++;
    }
  }
Exemple #2
0
  private void calcMaxes() {
    maxH = -1;
    maxP = -1;
    maxT = -1;

    for (DataPair pair : data) {
      int h = pair.getH();
      int p = pair.getP();

      if (h > maxH) maxH = h;
      if (p > maxP) maxP = p;

      maxT++;
    }
  }