Module io.sf.carte.echosvg.awt
Package io.sf.carte.echosvg.ext.awt.geom

Class Polyline2D

java.lang.Object
io.sf.carte.echosvg.ext.awt.geom.Polyline2D
All Implemented Interfaces:
Shape, Serializable, Cloneable
public class Polyline2D extends Object implements Shape, Cloneable, Serializable
This class has the same behavior than Polygon2D, except that the figure is not closed.
See Also:

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    protected Rectangle2D
    bounds
    Bounds of the Polyline2D.
    int
    npoints
    The total number of points.
    float[]
    xpoints
    The array of x coordinates.
    float[]
    ypoints
    The array of x coordinates.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Polyline2D()
    Creates an empty Polyline2D.
    Polyline2D(float[] xpoints, float[] ypoints, int npoints)
    Constructs and initializes a Polyline2D from the specified parameters.
    Polyline2D(int[] xpoints, int[] ypoints, int npoints)
    Constructs and initializes a Polyline2D from the specified parameters.
    Polyline2D(Line2D line)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    addPoint(float x, float y)
    Appends the specified coordinates to this Polyline2D.
    void
    addPoint(Point2D p)
     
    Object
    clone()
     
    boolean
    contains(double x, double y)
    Determines if the specified coordinates are inside this Polyline2D.
    boolean
    contains(double x, double y, double w, double h)
    Tests if the interior of this Polyline2D entirely contains the specified set of rectangular coordinates.
    boolean
    contains(int x, int y)
    Determines whether the specified coordinates are inside this Polyline2D.
    boolean
    contains(Point2D p)
    Tests if a specified Point2D is inside the boundary of this Polyline2D.
    boolean
    contains(Rectangle2D r)
    Tests if the interior of this Polyline2D entirely contains the specified Rectangle2D.
    boolean
    contains(Point p)
    Determines whether the specified Point is inside this Polyline2D.
    Rectangle
    getBounds()
    Gets the bounding box of this Polyline2D.
    Rectangle2D
    getBounds2D()
    Returns the high precision bounding box of the Shape.
    PathIterator
    getPathIterator(AffineTransform at)
    Returns an iterator object that iterates along the boundary of this Polygon and provides access to the geometry of the outline of this Polygon.
    PathIterator
    getPathIterator(AffineTransform at, double flatness)
    Returns an iterator object that iterates along the boundary of the Shape and provides access to the geometry of the outline of the Shape.
    Polygon2D
    getPolygon2D()
     
    boolean
    intersects(double x, double y, double w, double h)
    Tests if the interior of this Polygon intersects the interior of a specified set of rectangular coordinates.
    boolean
    intersects(Rectangle2D r)
    Tests if the interior of this Polygon intersects the interior of a specified Rectangle2D.
    void
    reset()
    Resets this Polyline2D object to an empty polygon.

    Methods inherited from class java.lang.Object

    equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

    • npoints

      public int npoints
      The total number of points. The value of npoints represents the number of points in this Polyline2D.

    • xpoints

      public float[] xpoints
      The array of x coordinates. The value of npoints is equal to the number of points in this Polyline2D.

    • ypoints

      public float[] ypoints
      The array of x coordinates. The value of npoints is equal to the number of points in this Polyline2D.

    • bounds

      protected Rectangle2D bounds
      Bounds of the Polyline2D.
      See Also:

  • Constructor Details

    • Polyline2D

      public Polyline2D()
      Creates an empty Polyline2D.

    • Polyline2D

      public Polyline2D(float[] xpoints, float[] ypoints, int npoints)
      Constructs and initializes a Polyline2D from the specified parameters.
      Parameters:
      xpoints - an array of x coordinates
      ypoints - an array of y coordinates
      npoints - the total number of points in the Polyline2D
      Throws:
      NegativeArraySizeException - if the value of npoints is negative.
      IndexOutOfBoundsException - if npoints is greater than the length of xpoints or the length of ypoints.
      NullPointerException - if xpoints or ypoints is null.

    • Polyline2D

      public Polyline2D(int[] xpoints, int[] ypoints, int npoints)
      Constructs and initializes a Polyline2D from the specified parameters.
      Parameters:
      xpoints - an array of x coordinates
      ypoints - an array of y coordinates
      npoints - the total number of points in the Polyline2D
      Throws:
      NegativeArraySizeException - if the value of npoints is negative.
      IndexOutOfBoundsException - if npoints is greater than the length of xpoints or the length of ypoints.
      NullPointerException - if xpoints or ypoints is null.

    • Polyline2D

      public Polyline2D(Line2D line)

  • Method Details

    • reset

      public void reset()
      Resets this Polyline2D object to an empty polygon. The coordinate arrays and the data in them are left untouched but the number of points is reset to zero to mark the old vertex data as invalid and to start accumulating new vertex data at the beginning. All internally-cached data relating to the old vertices are discarded. Note that since the coordinate arrays from before the reset are reused, creating a new empty Polyline2D might be more memory efficient than resetting the current one if the number of vertices in the new polyline data is significantly smaller than the number of vertices in the data from before the reset.

    • clone

      public Object clone()
      Overrides:
      clone in class Object

    • addPoint

      public void addPoint(Point2D p)

    • addPoint

      public void addPoint(float x, float y)
      Appends the specified coordinates to this Polyline2D.

      If an operation that calculates the bounding box of this Polyline2D has already been performed, such as getBounds or contains, then this method updates the bounding box.

      Parameters:
      x - the specified x coordinate
      y - the specified y coordinate
      See Also:

    • getBounds

      public Rectangle getBounds()
      Gets the bounding box of this Polyline2D. The bounding box is the smallest Rectangle whose sides are parallel to the x and y axes of the coordinate space, and can completely contain the Polyline2D.
      Specified by:
      getBounds in interface Shape
      Returns:
      a Rectangle that defines the bounds of this Polyline2D.

    • contains

      public boolean contains(Point p)
      Determines whether the specified Point is inside this Polyline2D. This method is required to implement the Shape interface, but in the case of Line2D objects it always returns false since a line contains no area.

    • contains

      public boolean contains(double x, double y)
      Determines if the specified coordinates are inside this Polyline2D. This method is required to implement the Shape interface, but in the case of Line2D objects it always returns false since a line contains no area.
      Specified by:
      contains in interface Shape

    • contains

      public boolean contains(int x, int y)
      Determines whether the specified coordinates are inside this Polyline2D. This method is required to implement the Shape interface, but in the case of Line2D objects it always returns false since a line contains no area.

    • getBounds2D

      public Rectangle2D getBounds2D()
      Returns the high precision bounding box of the Shape.
      Specified by:
      getBounds2D in interface Shape
      Returns:
      a Rectangle2D that precisely bounds the Shape.

    • contains

      public boolean contains(Point2D p)
      Tests if a specified Point2D is inside the boundary of this Polyline2D. This method is required to implement the Shape interface, but in the case of Line2D objects it always returns false since a line contains no area.
      Specified by:
      contains in interface Shape

    • intersects

      public boolean intersects(double x, double y, double w, double h)
      Tests if the interior of this Polygon intersects the interior of a specified set of rectangular coordinates.
      Specified by:
      intersects in interface Shape
      Parameters:
      x - the x coordinate of the specified rectangular shape's top-left corner
      y - the y coordinate of the specified rectangular shape's top-left corner
      w - the width of the specified rectangular shape
      h - the height of the specified rectangular shape
      Returns:
      true if the interior of this Polygon and the interior of the specified set of rectangular coordinates intersect each other; false otherwise.

    • intersects

      public boolean intersects(Rectangle2D r)
      Tests if the interior of this Polygon intersects the interior of a specified Rectangle2D.
      Specified by:
      intersects in interface Shape
      Parameters:
      r - a specified Rectangle2D
      Returns:
      true if this Polygon and the interior of the specified Rectangle2D intersect each other; false otherwise.

    • contains

      public boolean contains(double x, double y, double w, double h)
      Tests if the interior of this Polyline2D entirely contains the specified set of rectangular coordinates. This method is required to implement the Shape interface, but in the case of Line2D objects it always returns false since a line contains no area.
      Specified by:
      contains in interface Shape

    • contains

      public boolean contains(Rectangle2D r)
      Tests if the interior of this Polyline2D entirely contains the specified Rectangle2D. This method is required to implement the Shape interface, but in the case of Line2D objects it always returns false since a line contains no area.
      Specified by:
      contains in interface Shape

    • getPathIterator

      public PathIterator getPathIterator(AffineTransform at)
      Returns an iterator object that iterates along the boundary of this Polygon and provides access to the geometry of the outline of this Polygon. An optional AffineTransform can be specified so that the coordinates returned in the iteration are transformed accordingly.
      Specified by:
      getPathIterator in interface Shape
      Parameters:
      at - an optional AffineTransform to be applied to the coordinates as they are returned in the iteration, or null if untransformed coordinates are desired
      Returns:
      a PathIterator object that provides access to the geometry of this Polygon.

    • getPolygon2D

      public Polygon2D getPolygon2D()

    • getPathIterator

      public PathIterator getPathIterator(AffineTransform at, double flatness)
      Returns an iterator object that iterates along the boundary of the Shape and provides access to the geometry of the outline of the Shape. Only SEG_MOVETO and SEG_LINETO, point types are returned by the iterator. Since polylines are already flat, the flatness parameter is ignored.
      Specified by:
      getPathIterator in interface Shape
      Parameters:
      at - an optional AffineTransform to be applied to the coordinates as they are returned in the iteration, or null if untransformed coordinates are desired
      flatness - the maximum amount that the control points for a given curve can vary from colinear before a subdivided curve is replaced by a straight line connecting the endpoints. Since polygons are already flat the flatness parameter is ignored.
      Returns:
      a PathIterator object that provides access to the Shape object's geometry.