Class PolygonShape

java.lang.Object
uk.ac.starlink.ttools.plot2.layer.PolygonShape

@Equality public abstract class PolygonShape extends Object
Object that knows how to draw a polygon.
Since:
5 Oct 2021
Author:
Mark Taylor
  • Field Details

    • POLYSHAPES

      public static final PolygonShape[] POLYSHAPES
      Array of known shape instances.
  • Constructor Details

    • PolygonShape

      protected PolygonShape(String name, String description)
      Constructor.
      Parameters:
      name - name
      description - short human-readable description
  • Method Details

    • createPolygonGlyph

      public abstract Glyph createPolygonGlyph(int x0, int y0, int[] xs, int[] ys, int np)
      Returns a glyph representing a polygon with the given vertices.
      Parameters:
      x0 - X coordinate of nominal center
      y0 - Y coordinate of nominal center
      xs - X coordinates of vertices
      ys - Y coordinates of vertices
      np - number of vertices
    • toThicker

      public abstract PolygonShape toThicker(int nthick)
      Returns a version of this shape with thicker lines; may be this object if line thickening would have no effect.
      Parameters:
      nthick - line thickness index >=0
      Returns:
      thicker shape
    • getName

      public String getName()
      Returns this shape's name.
      Returns:
      name
    • getDescription

      public String getDescription()
      Returns a short description for this shape.
      Returns:
      human-readable plain-text description
    • toString

      public String toString()
      Overrides:
      toString in class Object