Class PolygonIterator

Object
AbstractLiteIterator
PolygonIterator
All Implemented Interfaces:
PathIterator

public final class PolygonIterator extends AbstractLiteIterator
A path iterator for the LiteShape class, specialized to iterate over Polygon objects.
Author:
Andrea Aime, simone giannecchini
  • Constructor Details

    • PolygonIterator

      public PolygonIterator(Polygon p, AffineTransform at)
      Creates a new PolygonIterator object.
      Parameters:
      p - The polygon
      at - The affine transform applied to coordinates during iteration
    • PolygonIterator

      public PolygonIterator(Polygon p, AffineTransform at, boolean generalize)
      Creates a new PolygonIterator object.
      Parameters:
      p - The polygon
      at - The affine transform applied to coordinates during iteration
      generalize - if true apply simple distance based generalization
    • PolygonIterator

      public PolygonIterator(Polygon p, AffineTransform at, boolean generalize, double maxDistance)
      Creates a new PolygonIterator object.
      Parameters:
      p - The polygon
      at - The affine transform applied to coordinates during iteration
      generalize - if true apply simple distance based generalization
      maxDistance - during iteration, a point will be skipped if it's distance from the previous is less than maxDistance
  • Method Details

    • setMaxDistance

      public void setMaxDistance(double distance)
      Sets the distance limit for point skipping during distance based generalization
      Parameters:
      distance - the maximum distance for point skipping
    • getMaxDistance

      public double getMaxDistance()
      Returns the distance limit for point skipping during distance based generalization
      Returns:
      the maximum distance for distance based generalization
    • 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, SEG_QUADTO, SEG_CUBICTO, 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 returns one point, SEG_QUADTO returns two points, SEG_CUBICTO returns 3 points and SEG_CLOSE does not return any points.
      Parameters:
      coords - an array that holds the data returned from this method
      Returns:
      the path-segment type of the current path segment.
      See Also:
    • getWindingRule

      public int getWindingRule()
      Return the winding rule for determining the interior of the path.
      Returns:
      WIND_EVEN_ODD by default.
    • isDone

      public boolean isDone()
      Tests if the iteration is complete.
      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.