Class Graph1D

  • All Implemented Interfaces:
    Computable, java.io.Serializable

    public class Graph1D
    extends Drawable
    implements Computable
    A Graph1D represents the graph of a function of one variable, to be displayed in a given CoordinateRect. A Graph1D is a Computable. The data for the graph is recomputed when its compute() method is called. It will also be recomputed, before it is drawn, if the coordinate rect has changed in some way.
    See Also:
    Serialized Form
    • Constructor Summary

      Constructors 
      Constructor Description
      Graph1D()
      Create a Graph1D with no function to graph.
      Graph1D​(Function func)
      Create a graph of the specified function.
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void compute()
      Recompute data for the graph and make sure that the area of the display canvas that shows the graph is redrawn.
      void draw​(java.awt.Graphics g, boolean coordsChanged)
      Draw the graph (possibly recomputing the data if the CoordinateRect has changed).
      java.awt.Color getColor()
      Get the color that is used to draw the graph.
      Function getFunction()
      Get the (possibly null) function whose graph is drawn.
      void setColor​(java.awt.Color c)
      Set the color to be used for drawing the graph.
      void setFunction​(Function f)
      Set the function to be graphed.
      • Methods inherited from class java.lang.Object

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

      • Graph1D

        public Graph1D()
        Create a Graph1D with no function to graph. One can be set later with setFunction();
      • Graph1D

        public Graph1D​(Function func)
        Create a graph of the specified function.
        Parameters:
        func - The function to be graphed. If func is null, nothing is drawn. If func is non-null, it must be a function of one variable.
    • Method Detail

      • setColor

        public void setColor​(java.awt.Color c)
        Set the color to be used for drawing the graph. The default color is magenta.
      • getColor

        public java.awt.Color getColor()
        Get the color that is used to draw the graph.
      • setFunction

        public void setFunction​(Function f)
        Set the function to be graphed. If it is null, nothing is drawn. If it is non-null, it must be a function of one variable, or an error will occur.
      • getFunction

        public Function getFunction()
        Get the (possibly null) function whose graph is drawn.
      • compute

        public void compute()
        Recompute data for the graph and make sure that the area of the display canvas that shows the graph is redrawn. This method is ordinarily called by a Controller.
        Specified by:
        compute in interface Computable
      • draw

        public void draw​(java.awt.Graphics g,
                         boolean coordsChanged)
        Draw the graph (possibly recomputing the data if the CoordinateRect has changed). This is not usually called directly.
        Specified by:
        draw in class Drawable
        Parameters:
        g - The graphics context in which the Drawble is to be drawn. (The drawing can change the color in g, but should not permanently change font, painting mode, etc. Thus, every drawable is responsible for setting the color it wants to use.)
        coordsChanged - Indicates whether the CoordinateRect has changed.