Examples of java.awt.Polygon

java.awt.Polygon
The Polygon class encapsulates a description of a closed, two-dimensional region within a coordinate space. This region is bounded by an arbitrary number of line segments, each of which is one side of the polygon. Internally, a polygon comprises of a list of {@code (x,y)}coordinate pairs, where each pair defines a vertex of the polygon, and two successive pairs are the endpoints of a line that is a side of the polygon. The first and final pairs of {@code (x,y)} points are joined by a line segment that closes the polygon. This Polygon is defined with an even-odd winding rule. See {@link java.awt.geom.PathIterator#WIND_EVEN_ODD WIND_EVEN_ODD}for a definition of the even-odd winding rule. This class's hit-testing methods, which include the contains, intersects and inside methods, use the insideness definition described in the {@link Shape} class comments. @version 1.26, 07/24/98 @author Sami Shaio @see Shape @author Herb Jellinek @since 1.0

      g.setColor(oldColor);
    }


    private Polygon getArrow() {
      if (mArrow == null) {
        mArrow = new Polygon();
        if (mDirection == ScrollDirection.UP) {
          mArrow.addPoint((int) (getSize().width / 2.0 - 6.0 + 0.5), (int) (getSize().height / 2.0 + 3.0 + 0.5));
          mArrow.addPoint((int) (getSize().width / 2.0 + 6.0 + 0.5), (int) (getSize().height / 2.0 + 3.0 + 0.5));
          mArrow.addPoint((int) (getSize().width / 2.0 + 0.5), (int) (getSize().height / 2.0 - 4.0 + 0.5));
        } else {

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  /**
   * @see Graphics#drawPolygon(int[], int[], int)
   */
  public void drawPolygon(final int[] xPoints, final int[] yPoints, final int nPoints)
  {
    final Polygon poly = new Polygon();
    for (int i = 0; i < nPoints; i++)
    {
      poly.addPoint(xPoints[i], yPoints[i]);
    }
    draw(poly);
  }

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  /**
   * @see Graphics#fillPolygon(int[], int[], int)
   */
  public void fillPolygon(final int[] xPoints, final int[] yPoints, final int nPoints)
  {
    final Polygon poly = new Polygon();
    for (int i = 0; i < nPoints; i++)
    {
      poly.addPoint(xPoints[i], yPoints[i]);
    }
    fill(poly);
  }

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   * @see Graphics#drawPolyline
   */
  public void drawPolygon(final int[] xPoints, final int[] yPoints,
                          final int nPoints)
  {
    parent.draw(new Polygon(xPoints, yPoints, nPoints));
  }

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   * @see Graphics#drawPolygon(int[], int[], int)
   */
  public void fillPolygon(final int[] xPoints, final int[] yPoints,
                          final int nPoints)
  {
    parent.fill(new Polygon(xPoints, yPoints, nPoints));
  }

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                this(n, d, xp, yp, (AffineTransform) null);
            }


            public Poly(String n, String d, int[] xp, int[] yp,
                    AffineTransform af) {
                super(n, d, new Polygon(xp, yp, xp.length), af);
            }

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            /*
             * very crude technique just break each segment up into
             * steps lines
             */
            Polygon p = new Polygon();
            p.addPoint((int) Math.round(X[0].eval(0)),
                    (int) Math.round(Y[0].eval(0)));
            for (int i = 0; i < X.length; i++) {
                for (int j = 1; j <= steps; j++) {
                    float u = j / (float) steps;
                    p.addPoint(Math.round(X[i].eval(u)),
                            Math.round(Y[i].eval(u)));
                }
            }


            // copy polygon points to the return array

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            /*
             * very crude technique just break each segment up into
             * steps lines
             */
            Polygon p = new Polygon();
            p.addPoint((int) Math.round(X[0].eval(0)),
                    (int) Math.round(Y[0].eval(0)));
            for (int i = 0; i < X.length; i++) {
                for (int j = 1; j <= steps; j++) {
                    float u = j / (float) steps;
                    p.addPoint(Math.round(X[i].eval(u)),
                            Math.round(Y[i].eval(u)));
                }
            }


            res = new float[p.npoints * 2];

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                height = fm.getAscent();
                descent = 0;
            }


            int nLines = parsedData.length;
            polyBounds = new Polygon();


            computeStringWidths(fm);


            int baselineOffset = 0; // baseline == BASELINE_BOTTOM,
            // normal.

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        g.setStroke(stroke);
        g.drawLine(0, middleY, width, middleY);


        int upTip = (int) ((float) height * .25);
        int downTip = (int) ((float) height * .75);
        Polygon poly = null;
        if (arrowHeadType == OMArrowHead.ARROWHEAD_DIRECTION_FORWARD
                || arrowHeadType == OMArrowHead.ARROWHEAD_DIRECTION_BOTH) {
            int rightWingX = (int) ((float) width * .75);
            poly = new Polygon(new int[] { width, rightWingX, rightWingX }, new int[] {
                    middleY, upTip, downTip }, 3);
            g.fill(poly);
            g.draw(poly); // Seems to help with rendering problem.
        }


        if (arrowHeadType == OMArrowHead.ARROWHEAD_DIRECTION_BACKWARD
                || arrowHeadType == OMArrowHead.ARROWHEAD_DIRECTION_BOTH) {
            int leftWingX = (int) ((float) width * .25);
            poly = new Polygon(new int[] { 0, leftWingX, leftWingX }, new int[] {
                    middleY, upTip, downTip }, 3);
            g.fill(poly);
            g.draw(poly); // Seems to help with rendering problem.
        }

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