Package org.opensourcephysics.display

Class Arrow

java.lang.Object
org.opensourcephysics.display.Arrow
All Implemented Interfaces:
Drawable
public class Arrow extends Object implements Drawable
A Drawable arrow that uses Java 2D drawing.
Version:
1.0
Author:
Wolfgang Christian

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    protected double
    a
     
    protected double
    b
     
    protected Color
    color
     
    protected float
    headSize
     
    protected double
    x
     
    protected double
    y
     

  • Constructor Summary

    Constructors
    Constructor
    Description
    Arrow(double _x, double _y, double _a, double _b)
    Constructs an Arrow with the given postion and components.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    draw(DrawingPanel panel, Graphics g)
    Draws the arrow.
    protected Shape
    getHead(Point2D.Double ptA, double theta)
    Gets the arrowhead shape.
    float
    getHeadSize()
    Gets the headsize for the arrow.
    static XML.ObjectLoader
    getLoader()
    Gets a loader that allows a Circle to be represented as XML data.
    double
    getX()
    Gets the x coordinate.
    double
    getXlength()
    Gets the horizontal component.
    double
    getY()
    Gets the y coordinate.
    double
    getYlength()
    Gets the vertical component.
    void
    setColor(Color c)
    Sets the arrow's color.
    void
    setHeadSize(float size)
    Sets the headsize for the arrow.
    void
    setX(double x)
    Sets the x coordinate.
    void
    setXlength(double dx)
    Sets the arrow's horizontal component.
    void
    setXY(double x, double y)
    Sets the x and y coordinates.
    void
    setY(double y)
    Sets the y coordinate.
    void
    setYlength(double dy)
    Sets the arrows vertical component.

    Methods inherited from class java.lang.Object

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

    Methods inherited from interface org.opensourcephysics.display.Drawable

    isInteractive

  • Field Details

    • headSize

      protected float headSize

    • color

      protected Color color

    • x

      protected double x

    • y

      protected double y

    • a

      protected double a

    • b

      protected double b

  • Constructor Details

    • Arrow

      public Arrow(double _x, double _y, double _a, double _b)
      Constructs an Arrow with the given postion and components.
      Parameters:
      _x - postion
      _y - position
      _a - horizontal component
      _b - vertical component

  • Method Details

    • getX

      public double getX()
      Gets the x coordinate.
      Returns:
      double x

    • setX

      public void setX(double x)
      Sets the x coordinate.
      Parameters:
      x -

    • getY

      public double getY()
      Gets the y coordinate.
      Returns:
      double y

    • setY

      public void setY(double y)
      Sets the y coordinate.
      Parameters:
      y -

    • setXY

      public void setXY(double x, double y)
      Sets the x and y coordinates.
      Parameters:
      y -

    • setColor

      public void setColor(Color c)
      Sets the arrow's color.
      Parameters:
      c -

    • setXlength

      public void setXlength(double dx)
      Sets the arrow's horizontal component.
      Parameters:
      dx -

    • setYlength

      public void setYlength(double dy)
      Sets the arrows vertical component.
      Parameters:
      dy -

    • getXlength

      public double getXlength()
      Gets the horizontal component.
      Returns:
      horizontal

    • getYlength

      public double getYlength()
      Gets the vertical component.
      Returns:
      vertical

    • getHeadSize

      public float getHeadSize()
      Gets the headsize for the arrow.
      Returns:
      float

    • setHeadSize

      public void setHeadSize(float size)
      Sets the headsize for the arrow.
      Parameters:
      size - float the head size in pixels.

    • draw

      public void draw(DrawingPanel panel, Graphics g)
      Draws the arrow.
      Specified by:
      draw in interface Drawable
      Parameters:
      panel - the drawing panel in which the arrow is viewed
      g - the graphics context upon which to draw

    • getHead

      protected Shape getHead(Point2D.Double ptA, double theta)
      Gets the arrowhead shape.
      Parameters:
      ptA2 -
      theta - double the angle of the arrow
      Returns:
      Shape

    • getLoader

      public static XML.ObjectLoader getLoader()
      Gets a loader that allows a Circle to be represented as XML data. Objects without XML loaders cannot be saved and retrieved from an XML file.
      Returns:
      ObjectLoader