Package org.geotools.geometry.jts

Class GeomCollectionIterator

Object
AbstractLiteIterator
GeomCollectionIterator
All Implemented Interfaces:
PathIterator
public final class GeomCollectionIterator extends AbstractLiteIterator
A path iterator for the LiteShape class, specialized to iterate over a geometry collection. It can be seen as a composite, since uses in fact other, simpler iterator to carry on its duties.
Author:
Andrea Aime

  • Constructor Details

    • GeomCollectionIterator

      public GeomCollectionIterator()

    • GeomCollectionIterator

      public GeomCollectionIterator(GeometryCollection gc, AffineTransform at, boolean generalize, double maxDistance)
      Creates a new instance of GeomCollectionIterator
      Parameters:
      gc - The geometry collection the iterator will use
      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

    • init

      public void init(GeometryCollection gc, AffineTransform at, boolean generalize, double maxDistance)

    • 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:

    • 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, SEG_QUADTO, SEG_CUBICTO, 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 returns one point, SEG_QUADTO returns two points, SEG_CUBICTO returns 3 points and SEG_CLOSE does not return any points.
      Specified by:
      currentSegment in interface PathIterator
      Overrides:
      currentSegment in class AbstractLiteIterator
      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()
      Returns the winding rule for determining the interior of the path.
      Returns:
      the winding rule.
      See Also:

    • 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.