Class FillPixer

java.lang.Object
uk.ac.starlink.ttools.plot2.layer.FillPixer
All Implemented Interfaces:
Pixer

public class FillPixer extends Object implements Pixer
Pixer that iterates over all points inside a polygon. Should handle all polygons (convex, concave, re-entrant). I think(?) the algorithm is about as efficient as it's going to get for a single-threaded implementation. Memory consumption is low.
Since:
6 Oct 2021
Author:
Mark Taylor
See Also:
  • Constructor Summary

    Constructors
    Constructor
    Description
    FillPixer(int[] xs, int[] ys, int np, Rectangle bounds)
    Constructor.
  • Method Summary

    Modifier and Type
    Method
    Description
    int
    Returns the X coordinate of the current point.
    int
    Returns the Y coordinate of the current point.
    boolean
    Advances to the next point to be dispensed by this iterator.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
  • Constructor Details

    • FillPixer

      public FillPixer(int[] xs, int[] ys, int np, Rectangle bounds)
      Constructor.
      Parameters:
      xs - np-element array giving graphics X vertex coordinates
      ys - np-element array giving graphics Y vertex coordinates
      np - number of vertices
      bounds - actual bounds within which pixels are required, or null for all pixels
  • Method Details

    • next

      public boolean next()
      Description copied from interface: Pixer
      Advances to the next point to be dispensed by this iterator. Must be called before any calls to getX/getY.
      Specified by:
      next in interface Pixer
      Returns:
      true iff there is another point
    • getX

      public int getX()
      Description copied from interface: Pixer
      Returns the X coordinate of the current point.
      Specified by:
      getX in interface Pixer
      Returns:
      X coordinate
    • getY

      public int getY()
      Description copied from interface: Pixer
      Returns the Y coordinate of the current point.
      Specified by:
      getY in interface Pixer
      Returns:
      Y coordinate