File	Doc	Category	Size	Date	Package
EllipseIterator.java	API Doc	Java SE 5 API	4942	Fri Aug 26 14:56:52 BST 2005	java.awt.geom

EllipseIterator

• java.lang.Object

Fields Summary
double	x
double	y
double	w
double	h
AffineTransform	affine
int	index
public static final double	CtrlVal
private static final double	pcv
private static final double	ncv
private static double[]	ctrlpts

Constructors Summary
EllipseIterator(Ellipse2D e, AffineTransform at) this.x = e.getX(); this.y = e.getY(); this.w = e.getWidth(); this.h = e.getHeight(); this.affine = at; if (w < 0 || h < 0) { index = 6; }

Methods Summary
public int	currentSegment(float[] coords) Returns the coordinates and type of the current path segment in the iteration. The return value is the path segment type: SEG_MOVETO, SEG_LINETO, SEG_QUADTO, SEG_CUBICTO, or SEG_CLOSE. A float array of length 6 must be passed in and may be used to store the coordinates of the point(s). Each point is stored as a pair of float x,y coordinates. SEG_MOVETO and SEG_LINETO types will return one point, SEG_QUADTO will return two points, SEG_CUBICTO will return 3 points and SEG_CLOSE will not return any points. see #SEG_MOVETO see #SEG_LINETO see #SEG_QUADTO see #SEG_CUBICTO see #SEG_CLOSE if (isDone()) { throw new NoSuchElementException("ellipse iterator out of bounds"); } if (index == 5) { return SEG_CLOSE; } if (index == 0) { double ctrls[] = ctrlpts[3]; coords[0] = (float) (x + ctrls[4] * w); coords[1] = (float) (y + ctrls[5] * h); if (affine != null) { affine.transform(coords, 0, coords, 0, 1); } return SEG_MOVETO; } double ctrls[] = ctrlpts[index - 1]; coords[0] = (float) (x + ctrls[0] * w); coords[1] = (float) (y + ctrls[1] * h); coords[2] = (float) (x + ctrls[2] * w); coords[3] = (float) (y + ctrls[3] * h); coords[4] = (float) (x + ctrls[4] * w); coords[5] = (float) (y + ctrls[5] * h); if (affine != null) { affine.transform(coords, 0, coords, 0, 3); } return SEG_CUBICTO;
public int	currentSegment(double[] coords) Returns the coordinates and type of the current path segment in the iteration. The return value is the path segment type: SEG_MOVETO, SEG_LINETO, SEG_QUADTO, SEG_CUBICTO, or SEG_CLOSE. A double array of length 6 must be passed in and may be used to store the coordinates of the point(s). Each point is stored as a pair of double x,y coordinates. SEG_MOVETO and SEG_LINETO types will return one point, SEG_QUADTO will return two points, SEG_CUBICTO will return 3 points and SEG_CLOSE will not return any points. see #SEG_MOVETO see #SEG_LINETO see #SEG_QUADTO see #SEG_CUBICTO see #SEG_CLOSE if (isDone()) { throw new NoSuchElementException("ellipse iterator out of bounds"); } if (index == 5) { return SEG_CLOSE; } if (index == 0) { double ctrls[] = ctrlpts[3]; coords[0] = x + ctrls[4] * w; coords[1] = y + ctrls[5] * h; if (affine != null) { affine.transform(coords, 0, coords, 0, 1); } return SEG_MOVETO; } double ctrls[] = ctrlpts[index - 1]; coords[0] = x + ctrls[0] * w; coords[1] = y + ctrls[1] * h; coords[2] = x + ctrls[2] * w; coords[3] = y + ctrls[3] * h; coords[4] = x + ctrls[4] * w; coords[5] = y + ctrls[5] * h; if (affine != null) { affine.transform(coords, 0, coords, 0, 3); } return SEG_CUBICTO;
public int	getWindingRule() Return the winding rule for determining the insideness of the path. see #WIND_EVEN_ODD see #WIND_NON_ZERO return WIND_NON_ZERO;
public boolean	isDone() Tests if there are more points to read. return true if there are more points to read return index > 5;
public void	next() Moves the iterator to the next segment of the path forwards along the primary direction of traversal as long as there are more points in that direction. index++;