Examples of Arc2D

com.google.code.appengine.awt.geom.Arc2D
java.awt.geom.Arc2D
Arc2D is the abstract superclass for all objects that store a 2D arc defined by a framing rectangle, start angle, angular extent (length of the arc), and a closure type (OPEN, CHORD, or PIE).
The arc is a partial section of a full ellipse which inscribes the framing rectangle of its parent {@link RectangularShape}. The angles are specified relative to the non-square framing rectangle such that 45 degrees always falls on the line from the center of the ellipse to the upper right corner of the framing rectangle. As a result, if the framing rectangle is noticeably longer along one axis than the other, the angles to the start and end of the arc segment will be skewed farther along the longer axis of the frame.
The actual storage representation of the coordinates is left to the subclass. @version 10 Feb 1997 @author Jim Graham @since 1.2

Examples of java.awt.geom.Arc2D

            // arc and ask for it's end angle and get the tangent there.
            Point2D prevEndPoint = 
                getSegmentTerminatingPoint(prev, prevSegType);
            boolean large   = (curr[3]!=0.);
            boolean goLeft = (curr[4]!=0.);
            Arc2D arc = ExtendedGeneralPath.computeArc
                (prevEndPoint.getX(), prevEndPoint.getY(),
                 curr[0], curr[1], curr[2],
                 large, goLeft, curr[5], curr[6]);
            double theta = arc.getAngleStart()+arc.getAngleExtent();
            theta = Math.toRadians(theta);
            dx = -arc.getWidth()/2.0*Math.sin(theta);
            dy = arc.getHeight()/2.0*Math.cos(theta);


            // System.out.println("In  Theta:  " + Math.toDegrees(theta) +  
            //                    " Dx/Dy: " + dx + "/" + dy);
            if (curr[2] != 0) {
                double ang = Math.toRadians(-curr[2]);

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Examples of java.awt.geom.Arc2D

        case ExtendedPathIterator.SEG_ARCTO: {
            // If the current segment is an ARCTO then we build the
            // arc and ask for it's end angle and get the tangent there.
            boolean large   = (next[3]!=0.);
            boolean goLeft = (next[4]!=0.);
            Arc2D arc = ExtendedGeneralPath.computeArc
                (currEndPoint.getX(), currEndPoint.getY(),
                 next[0], next[1], next[2],
                 large, goLeft, next[5], next[6]);
            double theta = arc.getAngleStart();
            theta = Math.toRadians(theta);
            dx = -arc.getWidth()/2.0*Math.sin(theta);
            dy = arc.getHeight()/2.0*Math.cos(theta);
            // System.out.println("Out Theta:  " + Math.toDegrees(theta) +  
            //                    " Dx/Dy: " + dx + "/" + dy);
            if (next[2] != 0) {
                double ang = Math.toRadians(-next[2]);
                double sinA = Math.sin(ang);

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Examples of java.awt.geom.Arc2D

     *                    relative to the start angle.
     * @see         java.awt.Graphics#fillArc
     */
    public void drawArc(int x, int y, int width, int height,
                        int startAngle, int arcAngle){
        Arc2D arc = new Arc2D.Float(x, y, width, height, startAngle, arcAngle, Arc2D.OPEN);
        draw(arc);
    }

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Examples of java.awt.geom.Arc2D

     *                    relative to the start angle.
     * @see         java.awt.Graphics#drawArc
     */
    public void fillArc(int x, int y, int width, int height,
                        int startAngle, int arcAngle){
        Arc2D arc = new Arc2D.Float(x, y, width, height, startAngle, arcAngle, Arc2D.PIE);
        fill(arc);
    }

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Examples of java.awt.geom.Arc2D

   * 
   * @param harness  the test harness (<code>null</code> not permitted).
   */
  public void test(TestHarness harness)      
  {
    Arc2D arc = new Arc2D.Double();
    Rectangle2D b = arc.getBounds2D();
    harness.check(b.getX(), 0.0);
    harness.check(b.getY(), 0.0);
    harness.check(b.getWidth(), 0.0);
    harness.check(b.getHeight(), 0.0);
  
    arc = new Arc2D.Double(
      new Rectangle2D.Double(0.0, 0.0, 1.0, 1.0), 90, 90, Arc2D.PIE
    );
    b = arc.getBounds2D();
    harness.check(b.getX(), 0.0);
    harness.check(b.getY(), 0.0);
    harness.check(b.getWidth(), 0.5);
    harness.check(b.getHeight(), 0.5);
  }

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Examples of java.awt.geom.Arc2D

   * @param harness  the test harness (<code>null</code> not permitted).
   */
  public void test(TestHarness harness)       
  {
    // setAngleStart(double)
    Arc2D arc = new Arc2D.Double(0.0, 0.0, 1.0, 1.0, 0.0, 90.0, Arc2D.PIE);
    arc.setAngleStart(85.0);
    harness.check(arc.getAngleStart(), 85.0);
    
    // setAngleStart(Point2D)
    arc.setAngleStart(new Point2D.Double(1.0, 1.0));
    harness.check(arc.getAngleStart(), -45.0);
    boolean pass = false;
    try
    {
      arc.setAngleStart(null);
    }
    catch (NullPointerException e) 
    {
      pass = true;
    }

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Examples of java.awt.geom.Arc2D

   * 
   * @param harness  the test harness (<code>null</code> not permitted).
   */
  public void test(TestHarness harness)      
  {
    Arc2D arc = new Arc2D.Double();
    harness.check(!arc.intersects(0.0, 0.0, 0.0, 0.0));
    harness.check(!arc.intersects(1.0, 2.0, 3.0, 4.0));


    arc = new Arc2D.Double(-1.0, -1.0, 2.0, 2.0, 0.0, 90.0, Arc2D.PIE);
    harness.check(arc.intersects(-1.0, 0.0, 1.0, 1.0));
    harness.check(arc.intersects(-1.0, -1.0, 1.0, 1.0));
    harness.check(arc.intersects(0.0, 0.0, 1.0, 1.0));
    harness.check(arc.intersects(0.0, -1.0, 1.0, 1.0));
    harness.check(!arc.intersects(5.0, 5.0, 1.0, 1.0));
    
    arc = new Arc2D.Double();
    harness.check(!arc.intersects(new Rectangle2D.Double(0.0, 0.0, 0.0, 0.0)));
    boolean pass = false;
    try {
        arc.intersects(null);
    }
    catch (NullPointerException e) {
        pass = true;
    }
    harness.check(pass);

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Examples of java.awt.geom.Arc2D

   * 
   * @param harness  the test harness (<code>null</code> not permitted).
   */
  public void test(TestHarness harness)      
  {
    Arc2D arc = new Arc2D.Double();
    arc.setArcType(Arc2D.OPEN);
    harness.check(arc.getArcType() == Arc2D.OPEN);
    arc.setArcType(Arc2D.CHORD);
    harness.check(arc.getArcType() == Arc2D.CHORD);
    arc.setArcType(Arc2D.PIE);
    harness.check(arc.getArcType() == Arc2D.PIE);
    
    boolean pass = false;
    try {
      arc.setArcType(99);
    }
    catch (IllegalArgumentException e) {
      pass = true;
    }
    harness.check(pass);

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Examples of java.awt.geom.Arc2D

   * 
   * @param harness  the test harness (<code>null</code> not permitted).
   */
  public void test(TestHarness harness)       
  {
    Arc2D arc = new Arc2D.Double(0.0, 0.0, 1.0, 1.0, 0.0, 90.0, Arc2D.PIE);
    arc.setFrame(1.0, 2.0, 3.0, 4.0);
    harness.check(arc.getX(), 1.0);
    harness.check(arc.getY(), 2.0);
    harness.check(arc.getWidth(), 3.0);
    harness.check(arc.getHeight(), 4.0);
  }

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Examples of java.awt.geom.Arc2D

   * 
   * @param harness  the test harness (<code>null</code> not permitted).
   */
  public void test(TestHarness harness) 
  {
    Arc2D arc1 = new Arc2D.Float(1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f, Arc2D.PIE);
    Arc2D arc2 = null;
    arc2 = (Arc2D) arc1.clone();
    harness.check(arc1.getX() == arc2.getX());
    harness.check(arc1.getY() == arc2.getY());
    harness.check(arc1.getWidth() == arc2.getWidth());
    harness.check(arc1.getHeight() == arc2.getHeight());
    harness.check(arc1.getAngleStart(), arc2.getAngleStart());
    harness.check(arc1.getAngleExtent(), arc2.getAngleExtent());
    harness.check(arc1.getArcType() == arc2.getArcType());
    harness.check(arc1.getClass() == arc2.getClass());
    harness.check(arc1 != arc2);
  }

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