Examples of java.awt.geom.Line2D

java.awt.geom.Line2D
sun.com/j2se/1.3/docs/guide/2d/spec/j2d-intro.fm2.html#61857"> Coordinate Systems section of the Java 2D Programmer's Guide.
This class is only the abstract superclass for all objects that store a 2D line segment. The actual storage representation of the coordinates is left to the subclass. @version 1.31, 02/24/06 @author Jim Graham @since 1.2


    final StyleSheet styleSheet = node.getStyleSheet();
    final boolean draw = styleSheet.getBooleanStyleProperty(ElementStyleKeys.DRAW_SHAPE);
    if (draw && shape instanceof Line2D)
    {
      final Line2D line = (Line2D) shape;


      final boolean vertical = line.getX1() == line.getX2();
      final boolean horizontal = line.getY1() == line.getY2();
      if (vertical && horizontal)
      {
        // not a valid line ..
        return;
      }
      if (vertical == false && horizontal == false)
      {
        // not a valid line ..
        return;
      }
      if (retval == null)
      {
        retval = new CellBackground();
      }
      final BorderEdge edge = ProcessUtility.produceBorderEdge(styleSheet);
      if (edge == null)
      {
        return;
      }
      if (vertical)
      {
        if (line.getX1() == 0)
        {
          if ((backgroundHint & BACKGROUND_LEFT) == BACKGROUND_LEFT)
          {
            retval.setLeft(edge);
          }
          else if ((backgroundHint & BACKGROUND_RIGHT) == BACKGROUND_RIGHT)
          {
            final RenderBox nodeParent = node.getParent();
            if (nodeParent != null && (nodeParent.getX() + nodeParent.getWidth()) == (nodeX + nodeWidth))
            {
              retval.setRight(edge);
            }
          }
        }
        else
        {
          if ((backgroundHint & BACKGROUND_RIGHT) == BACKGROUND_RIGHT)
          {
            retval.setRight(edge);
          }
        }
      }
      else
      {
        if (line.getY1() == 0)
        {
          if ((backgroundHint & BACKGROUND_TOP) == BACKGROUND_TOP)
          {
            retval.setTop(edge);
          }

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    final boolean draw = styleSheet.getBooleanStyleProperty(ElementStyleKeys.DRAW_SHAPE);
    if (draw && rawObject instanceof Line2D)
    {
      final int lineType;
      final long coordinate;
      final Line2D line = (Line2D) rawObject;


      final boolean vertical = line.getX1() == line.getX2();
      final boolean horizontal = line.getY1() == line.getY2();
      if (vertical && horizontal)
      {
        return null;
      }
      if (vertical)
      {
        lineType = SheetLayoutTableCellDefinition.LINE_HINT_VERTICAL;
        coordinate = StrictGeomUtility.toInternalValue(line.getX1()) + box.getX();
      }
      else if (horizontal)
      {
        lineType = SheetLayoutTableCellDefinition.LINE_HINT_HORIZONTAL;
        coordinate = StrictGeomUtility.toInternalValue(line.getY1()) + box.getY() + shift;
      }
      else
      {
        return null;
      }

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   * @param x2 the second point's <i>x</i> coordinate.
   * @param y2 the second point's <i>y</i> coordinate.
   */
  public void drawLine(final int x1, final int y1, final int x2, final int y2)
  {
    final Line2D line = new Line2D.Double((double) x1, (double) y1, (double) x2, (double) y2);
    draw(line);
  }

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   * @see java.awt.Graphics#drawPolygon(int[], int[], int)
   * @since JDK1.1
   */
  public void drawPolyline(final int[] x, final int[] y, final int nPoints)
  {
    final Line2D line = new Line2D.Double(x[0], y[0], x[0], y[0]);
    for (int i = 1; i < nPoints; i++)
    {
      line.setLine(line.getX2(), line.getY2(), x[i], y[i]);
      draw(line);
    }
  }

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   */
  private static Line2D resizeLine(final Line2D line,
                                   final double width,
                                   final double height)
  {
    final Line2D newLine = getNormalizedLine(line);
    final Point2D p1 = newLine.getP1();
    final Point2D p2 = newLine.getP2();
    final double normPointX = (p1.getX() - p2.getX());
    final double normPointY = (p1.getY() - p2.getY());
    final double scaleX = (normPointX == 0) ? 1 : width / Math.abs(normPointX);
    final double scaleY = (normPointY == 0) ? 1 : height / Math.abs(normPointY);
    p2.setLocation((p2.getX() - p1.getX()) * scaleX + p1.getX(),
        (p2.getY() - p1.getY()) * scaleY + p1.getY());
    newLine.setLine(p1, p2);
    return newLine;
  }

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   * @param line the original line
   * @return the normalized line
   */
  private static Line2D getNormalizedLine(final Line2D line)
  {
    final Line2D lineClone = (Line2D) line.clone();


    final Point2D p1 = line.getP1();
    final Point2D p2 = line.getP2();
    if (p1.getX() < p2.getX())
    {
      return lineClone;
    }
    if (p1.getX() > p2.getX())
    {
      lineClone.setLine(p2, p1);
      return lineClone;
    }
    if (p1.getY() < p2.getY())
    {
      return lineClone;
    }
    lineClone.setLine(p2, p1);
    return lineClone;
  }

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   */
  public static Shape performCliping(final Shape s, final Rectangle2D bounds)
  {
    if (s instanceof Line2D)
    {
      final Line2D line = (Line2D) s;
      final Point2D[] clipped = getClipped
          (line.getX1(), line.getY1(), line.getX2(), line.getY2(),
              -DELTA, DELTA + bounds.getWidth(),
              -DELTA, DELTA + bounds.getHeight());
      if (clipped == null)
      {
        return new GeneralPath();

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      retval.setFrame(retval.getX() + x, retval.getY() + y, retval.getWidth(), retval.getHeight());
      return retval;
    }
    if (s instanceof Line2D)
    {
      final Line2D line = (Line2D) s;
      final Line2D retval = (Line2D) line.clone();
      retval.setLine(retval.getX1() + x, retval.getY1() + y,
          retval.getX2() + x, retval.getY2() + y);
      return retval;
    }


    final AffineTransform af = AffineTransform.getTranslateInstance(x, y);
    return af.createTransformedShape(s);

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      final int UnderlineThickness = 50;
      //
      final double d = PdfGraphics2D.asPoints((double) UnderlineThickness, (int) fontSize);
      setStroke(new BasicStroke((float) d));
      y = (float) ((double) (y) + PdfGraphics2D.asPoints((double) (UnderlineThickness), (int) fontSize));
      final Line2D line = new Line2D.Double((double) x, (double) y, (width + x), (double) y);
      draw(line);
    }
  }

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  /**
   * @see Graphics#drawLine(int, int, int, int)
   */
  public void drawLine(final int x1, final int y1, final int x2, final int y2)
  {
    final Line2D line = new Line2D.Double((double) x1, (double) y1, (double) x2, (double) y2);
    draw(line);
  }

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