LineIteratorpublic class LineIterator extends Object implements PathIterator| A utility class to iterate over the path segments of a line segment
through the PathIterator interface. |
| Fields Summary |
|---|
| Line2D | line | | AffineTransform | affine | | int | index |
| 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.
if (isDone()) {
throw new NoSuchElementException("line iterator out of bounds");
}
int type;
if (index == 0) {
coords[0] = (float) line.getX1();
coords[1] = (float) line.getY1();
type = SEG_MOVETO;
} else {
coords[0] = (float) line.getX2();
coords[1] = (float) line.getY2();
type = SEG_LINETO;
}
if (affine != null) {
affine.transform(coords, 0, coords, 0, 1);
}
return type;
| | 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.
if (isDone()) {
throw new NoSuchElementException("line iterator out of bounds");
}
int type;
if (index == 0) {
coords[0] = line.getX1();
coords[1] = line.getY1();
type = SEG_MOVETO;
} else {
coords[0] = line.getX2();
coords[1] = line.getY2();
type = SEG_LINETO;
}
if (affine != null) {
affine.transform(coords, 0, coords, 0, 1);
}
return type;
| | public int | getWindingRule()Return the winding rule for determining the insideness of the
path.
return WIND_NON_ZERO;
| | public boolean | isDone()Tests if there are more points to read.
return (index > 1);
| | 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++;
|
|
