@Override
  public void draw(Graphics2D g) {
    double opacity = get(OPACITY);
    opacity = Math.min(Math.max(0d, opacity), 1d);
    if (opacity != 0d) {
      if (opacity != 1d) {
        Rectangle2D.Double drawingArea = getDrawingArea();

        Rectangle2D clipBounds = g.getClipBounds();
        if (clipBounds != null) {
          Rectangle2D.intersect(drawingArea, clipBounds, drawingArea);
        }

        if (!drawingArea.isEmpty()) {

          BufferedImage buf =
              new BufferedImage(
                  (int) ((2 + drawingArea.width) * g.getTransform().getScaleX()),
                  (int) ((2 + drawingArea.height) * g.getTransform().getScaleY()),
                  BufferedImage.TYPE_INT_ARGB);
          Graphics2D gr = buf.createGraphics();
          gr.scale(g.getTransform().getScaleX(), g.getTransform().getScaleY());
          gr.translate((int) -drawingArea.x, (int) -drawingArea.y);
          gr.setRenderingHints(g.getRenderingHints());
          drawFigure(gr);
          gr.dispose();
          Composite savedComposite = g.getComposite();
          g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, (float) opacity));
          g.drawImage(
              buf,
              (int) drawingArea.x,
              (int) drawingArea.y,
              2 + (int) drawingArea.width,
              2 + (int) drawingArea.height,
              null);
          g.setComposite(savedComposite);
        }
      } else {
        drawFigure(g);
      }
    }
  }
Beispiel #2
0
  public void paintComponent(Graphics g) {
    super.paintComponent(g);

    Graphics2D g2d = (Graphics2D) g;
    RenderingHints rh = g2d.getRenderingHints();
    rh.put(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    rh.put(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
    g2d.setRenderingHints(rh);

    // Background.
    D = this.getSize();
    g.setColor(backgroundColor);
    g.fillRect(0, 0, D.width, D.height);
    Graphics2D g2 = (Graphics2D) g;
    g2.setStroke(lineStroke);

    // Axes, bounding box.
    g.setColor(Color.gray);
    g.drawLine(inset, D.height - inset, D.width - inset, D.height - inset);
    g.drawLine(D.width - inset, inset, D.width - inset, D.height - inset);
    g.drawLine(inset, inset, inset, D.height - inset);
    g.drawLine(inset, inset, D.width - inset, inset);

    double xDelta = (maxX - minX) / numIntervals;

    // X-ticks and labels.
    for (int i = 1; i <= numIntervals; i++) {
      double xTickd = i * xDelta;
      int xTick = (int) (xTickd / (maxX - minX) * (D.width - 2 * inset));
      g.drawLine(inset + xTick, D.height - inset - 5, inset + xTick, D.height - inset + 5);
      double x = minX + i * xDelta;
      g.drawString(df.format(x), xTick + inset - 5, D.height - inset + 20);
    }

    // Y-ticks
    double yDelta = (maxY - minY) / numIntervals;
    for (int i = 0; i < numIntervals; i++) {
      int yTick = (i + 1) * (int) ((D.height - 2 * inset) / (double) numIntervals);
      g.drawLine(inset - 5, D.height - yTick - inset, inset + 5, D.height - yTick - inset);
      double y = minY + (i + 1) * yDelta;
      g.drawString(df.format(y), 1, D.height - yTick - inset);
    }

    // Zoom+move
    Font savedFont = g.getFont();
    g.setFont(plusFont);
    g.drawString("+", D.width - 25, 20);
    g.setFont(minusFont);
    g.drawString("-", D.width - 25, 50);
    drawArrow(g2d, D.width - 70, 20, D.width - 70, 0, 1.0f, lineStroke); // Up
    drawArrow(g2d, D.width - 70, 30, D.width - 70, 50, 1.0f, lineStroke); // Down
    drawArrow(g2d, D.width - 65, 25, D.width - 45, 25, 1.0f, lineStroke); // Right
    drawArrow(g2d, D.width - 75, 25, D.width - 95, 25, 1.0f, lineStroke); // Left
    g.setFont(savedFont);

    // See if standard axes are in the middle.
    g.setColor(Color.gray);
    if ((minX < 0) && (maxX > 0) && (drawMiddleAxes)) {
      // Draw y-axis
      int x = (int) ((0 - minX) / (maxX - minX) * (D.width - 2 * inset));
      g.drawLine(inset + x, D.height - inset, inset + x, inset);
    }
    if ((minY < 0) && (maxY > 0) && (drawMiddleAxes)) {
      // Draw x-axis
      int y = (int) ((0 - minY) / (maxY - minY) * (D.height - 2.0 * inset));
      g.drawLine(inset, D.height - y - inset, D.width - inset, D.height - y - inset);
    }

    // Draw the objects.
    drawObjects(g, points, lines, ovals, rectangles, images, labels, eqnLines);
    if (animationMode) {
      drawObjects(g, animPoints, animLines, animOvals, animRectangles, null, labels, eqnLines);
      // No images in animation mode.
    }

    drawScribbles(g);
  }
Beispiel #3
0
 /** [Advanced] */
 public RenderingHints getRenderingHints() {
   Graphics2D g = getG();
   return g == null ? null : g.getRenderingHints();
 }