Java java.awt.geom Class FlatteningPathIterator（JDK8）

Constructor Detail

• FlatteningPathIterator

  public FlatteningPathIterator(PathIterator src,
                                double flatness)

  Constructs a new FlatteningPathIterator object that flattens a path as it iterates over it. The iterator does not subdivide any curve read from the source iterator to more than 10 levels of subdivision which yields a maximum of 1024 line segments per curve.

  Parameters:

  src - the original unflattened path being iterated over

  flatness - the maximum allowable distance between the control points and the flattened curve

• FlatteningPathIterator

  public FlatteningPathIterator(PathIterator src,
                                double flatness,
                                int limit)

  Constructs a new FlatteningPathIterator object that flattens a path as it iterates over it. The limit parameter allows you to control the maximum number of recursive subdivisions that the iterator can make before it assumes that the curve is flat enough without measuring against the flatness parameter. The flattened iteration therefore never generates more than a maximum of (2^limit) line segments per curve.

  Parameters:

  src - the original unflattened path being iterated over

  flatness - the maximum allowable distance between the control points and the flattened curve

  limit - the maximum number of recursive subdivisions allowed for any curved segment

  Throws:

  IllegalArgumentException - if flatness or limit is less than zero

Method Detail

• getFlatness

  public double getFlatness()

  Returns the flatness of this iterator.

  Returns:

  the flatness of this FlatteningPathIterator.

• getRecursionLimit

  public int getRecursionLimit()

  Returns the recursion limit of this iterator.

  Returns:

  the recursion limit of this FlatteningPathIterator.

• getWindingRule

  public int getWindingRule()

  Returns the winding rule for determining the interior of the path.

  Specified by:

  getWindingRule in interface PathIterator

  Returns:

  the winding rule of the original unflattened path being iterated over.

  See Also:

  PathIterator.WIND_EVEN_ODD, PathIterator.WIND_NON_ZERO

• isDone

  public boolean isDone()

  Tests if the iteration is complete.

  Specified by:

  isDone in interface PathIterator

  Returns:

  true if all the segments have been read; false otherwise.

• next

  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.

  Specified by:

  next in interface PathIterator

• currentSegment

  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, or SEG_CLOSE. A float array of length 6 must be passed in and can 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 return one point, and SEG_CLOSE does not return any points.

  Specified by:

  currentSegment in interface PathIterator

  Parameters:

  coords - an array that holds the data returned from this method

  Returns:

  the path segment type of the current path segment.

  Throws:

  NoSuchElementException - if there are no more elements in the flattening path to be returned.

  See Also:

  PathIterator.SEG_MOVETO, PathIterator.SEG_LINETO, PathIterator.SEG_CLOSE

• currentSegment

  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, or SEG_CLOSE. A double array of length 6 must be passed in and can 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 return one point, and SEG_CLOSE does not return any points.

  Specified by:

  currentSegment in interface PathIterator

  Parameters:

  coords - an array that holds the data returned from this method

  Returns:

  the path segment type of the current path segment.

  Throws:

  NoSuchElementException - if there are no more elements in the flattening path to be returned.

  See Also:

  PathIterator.SEG_MOVETO, PathIterator.SEG_LINETO, PathIterator.SEG_CLOSE