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Class EDU.emporia.mathbeans.MathGrid

Object
   |
   +----Component
           |
           +----Container
                   |
                   +----JComponent
                           |
                           +----JPanel
                                   |
                                   +----EDU.emporia.mathbeans.MathGrid

public class MathGrid

extends JPanel

GRIDCOARSE

Static constant used for value of gridLines that correponds to a coarse grid.

GRIDFINE

Static constant used for value of gridLines that correponds to a fine grid.

GRIDNORMAL

Static constant used for value of gridLines that correponds to the default grid.

GRIDOFF

Static used for value of gridLines that correponds no gridlines.

SHOWPOINT

Static used for value of zoomMode that correponds to the show point mode.

ZOOMBOX

Static used for value of zoomMode that correponds to the zoom box mode.

ZOOMIN

Static used for value of zoomMode that correponds to the zoom in mode.

ZOOMOFF

Static used for value of zoomMode that correponds to the zoom off mode.

ZOOMOUT

Static used for value of zoomMode that correponds to the zoom out mode.

axesColor

axesColor will designate the color in which the axes will be drawn The default will be black.

dragging

This will be true when the mouse is dragging in zoomBox mode

fm

FontMetrics object for the current font

fontHeight

fontHeight will contain the height of the font.

gridBorder

gridBorder will provide a border for the Coordinate Grid It will be a TitledBorder so that it can contain a title.

gridColor

gridColor will designate the color in which the grid lines will be drawn.

gridInsets

gridInsets will tell the amount of inset on each side for the border.

gridLines

gridLines will designate the approximate number of gridLines that will be drawn in each direction.

height

height will contain the height of the coordinate system in pixels.

innerBorder

The inner border that will be used to display the upper title

justZoomed

This will be true immediately after a zoom

message

This will be the message that will be displayed at the top of the graph

outerBorder

The outer border that will be used to display the lower title

theFont

The current font used for drawing.

title

title will provide a title for the graph

width

width will contain the width of the coordinate system in pixels.

xBorder

xBorder will contain the number of pixels to be designated for the border in the x direction that will be added, when necessary, to leave room for the labels.

xFontWidth

xFontWidth contains the width of the largest string to be displayed along the x axis.

xHashMark

xHashMark will contain the mathematical distance between the hash marks on the x axis

xHashMarkPixel

xHashMarkPixel will contain the pixel distance between the hash marks on the x axis

xLabel

xLabel will contain the label to be displayed for the x-axis

xMark

xMark will be the mathematical distance between gridlines on the x-axis.

xMarkPixel

xMarkPixel is be the pixel version of xMark

xMax

xMax will contain the default numerical value of the largest x-coordinate displayed

xMaxCurrent

This will hold the current parameter for the grid that will be used for drawing.

xMaxPixel

The pixel version of xMaxCurrent

xMin

xMin will contain the default numerical value of the smallest x-coordinate displayed

xMinCurrent

This will hold the current parameter for the grid that will be used for drawing.

xMinPixel

The pixel version of xMinCurrent

xRange

xRange will contain the mathematical width of the coordinate system.

xValue1

Used to hold the coordinates of the rectange used when dragging the mouse in zoom box mode

xValue2

Used to hold the coordinates of the rectange used when dragging the mouse in zoom box mode

xZeroMath

xZeroMath is the math version of the x-coordinate of the "origin".

xZeroPixel

xZeroPixel is the pixel version of the x-coordinate of the "origin".

yBorder

yBorder will contain the number of pixels to be designated for the border in the y direction that will be added, when necessary, to leave room for the labels.

yFontWidth

yFontWidth contains the width of the largest string to be displayed along the y axis.

yHashMark

yHashMarks will contain the mathematical distance between the hash marks on the y axis

yHashMarkPixel

yHashMarkPixel will contain the pixel distance between the hash marks on the y axis

yLabel

yLabel will contain the label to be displayed for the y-axis

yMark

yMark will be the mathematical distance between gridlines on the y-axis.

yMarkPixel

yMarkPixel is be the pixel version of yMark

yMax

yMax will contain the default numerical value of the largest y-coordinate displayed

yMaxCurrent

This will hold the current parameter for the grid that will be used for drawing.

yMaxPixel

The pixel version of yMaxCurrent

yMin

yMin will contain the default numerical value of the smallest y-coordinate displayed

yMinCurrent

This will hold the current parameter for the grid that will be used for drawing.

yMinPixel

The pixel version of yMinCurrent

yRange

yRange will contain the mathematical height of the coordinate system.

yValue1

Used to hold the coordinates of the rectange used when dragging the mouse in zoom box mode

yValue2

Used to hold the coordinates of the rectange used when dragging the mouse in zoom box mode

yZeroMath

yZeroMath is the math version of the y-coordinate of the "origin".

yZeroPixel

yZeroPixel is the pixel version of the y-coordinate of the "origin".

zoomFactor

This will determine the factor by which you zoom in or out

zoomMode

the value of zoomMode will determine how the Grid will respond to a mouse-click.

EDU.emporia.mathbeans.MathGrid()

adjustBorders()

This method will adjust the borders to make sure that there is room to display the labels

getAxesColor()

Gets the color that will be used to draw the axes.

getGridColor()

Gets the color to be used for the gridlines

getGridLines()

Gets the approximate number of gridlines to be drawn.

getMessage()

Gets the message that will appear at the top of the grid.

getTitle()

Gets the title that is displayed at the bottom of the grid.

getXLabel()

Gets the label that will be used for the x-axis.

getXMax()

Gets the value of xMax

getXMin()

Gets the value of xMin

getYLabel()

Gets the Label to be used for the y-axis

getYMax()

Gets the value of yMax

getYMin()

Gets the value of YMin

getZoomFactor()

Gets the factor that will be used in Zoom In or Zoom Out mode.

getZoomMode()

Gets the value of zoomMode

main(String[])

paintComponent(Graphics)

Paints the Grid

reshape(int, int, int, int)

This method has been deprecated and should be removed when possible.

resize(int, int)

This method has been deprecated and should be removed when possible.

setAxesColor(Color)

Sets the color that will be used to draw the axes.

setBounds(int, int, int, int)

overrides the setBounds method so that it will update the parameters before redrawing.

setBounds(Rectangle)

overrides the setBounds method so that it will update the parameters before redrawing.

setGridColor(Color)

Sets the color to be used for the gridlines.

setGridLines(int)

Sets the approximate number of gridlines to be drawn.

setMessage(String)

Sets the message that will be displayed at the top of the grid.

setSize(Dimension)

Overrides the setSize method so that it will update the parmeters before redrawing.

setSize(int, int)

Overrides the setSize method so that it will update the parameters before redrawing.

setTitle(String)

Sets the title that will be displayed at the bottom of the graph.

setXLabel(String)

Sets the label to be used for the x-axis.

setXMax(double)

Sets the value of xMax

setXMin(double)

Sets the value of xMin

setYLabel(String)

Sets the label to be used for the y-axis.

setYMax(double)

Sets the value of yMax

setYMin(double)

Sets the value of yMin

setZoomFactor(int)

Sets the factor that will be used for zooming in Zoom In, or Zoom Out mode.

setZoomMode(int)

This sets the zoom mode by assigning a value to the parameter zoomMode.

toString()

Gives a String description of the coordinate system

updateParameters()

This method will update the parameters to reflect any changes made in xMin, xMax, yMin, yMax, or the overall size of the MathGrid.

xMathToPixel(double)

Converts a math x coordinate into its corresponding coordinate in pixels.

xPixelToMath(int)

Converts the pixel version of an x-coordinate into its corresponding math coordinate

yMathToPixel(double)

Converts a math y coordinate into its corresponding coordinate in pixels.

yPixelToMath(int)

Converts the pixel version of the y-coordinate into the mathematical one

public static final int GRIDCOARSE

Static constant used for value of gridLines that correponds to a coarse grid.

public static final int GRIDFINE

Static constant used for value of gridLines that correponds to a fine grid.

public static final int GRIDNORMAL

Static constant used for value of gridLines that correponds to the default grid.

public static final int GRIDOFF

Static used for value of gridLines that correponds no gridlines.

public static final int SHOWPOINT

Static used for value of zoomMode that correponds to the show point mode.

public static final int ZOOMBOX

Static used for value of zoomMode that correponds to the zoom box mode.

public static final int ZOOMIN

Static used for value of zoomMode that correponds to the zoom in mode.

public static final int ZOOMOFF

Static used for value of zoomMode that correponds to the zoom off mode.

public static final int ZOOMOUT

Static used for value of zoomMode that correponds to the zoom out mode.

protected java.awt.Color axesColor

axesColor will designate the color in which the axes will be drawn The default will be black.

protected boolean dragging

This will be true when the mouse is dragging in zoomBox mode

protected java.awt.FontMetrics fm

FontMetrics object for the current font

protected int fontHeight

fontHeight will contain the height of the font. This will be used to adjust the bottom border so that there is room to display the labels.

protected javax.swing.border.TitledBorder gridBorder

gridBorder will provide a border for the Coordinate Grid It will be a TitledBorder so that it can contain a title.

protected java.awt.Color gridColor

gridColor will designate the color in which the grid lines will be drawn. The default will be white.

protected java.awt.Insets gridInsets

gridInsets will tell the amount of inset on each side for the border.

protected int gridLines

gridLines will designate the approximate number of gridLines that will be drawn in each direction. It may not be precise due to rounding.

protected int height

height will contain the height of the coordinate system in pixels.

protected javax.swing.border.TitledBorder innerBorder

The inner border that will be used to display the upper title

protected boolean justZoomed

This will be true immediately after a zoom

protected java.lang.String message

This will be the message that will be displayed at the top of the graph

protected javax.swing.border.TitledBorder outerBorder

The outer border that will be used to display the lower title

protected java.awt.Font theFont

The current font used for drawing.

protected java.lang.String title

title will provide a title for the graph

protected int width

width will contain the width of the coordinate system in pixels.

protected int xBorder

xBorder will contain the number of pixels to be designated for the border in the x direction that will be added, when necessary, to leave room for the labels.

protected int xFontWidth

xFontWidth contains the width of the largest string to be displayed along the x axis.

protected double xHashMark

xHashMark will contain the mathematical distance between the hash marks on the x axis

protected int xHashMarkPixel

xHashMarkPixel will contain the pixel distance between the hash marks on the x axis

protected java.lang.String xLabel

xLabel will contain the label to be displayed for the x-axis

protected double xMark

xMark will be the mathematical distance between gridlines on the x-axis.

protected int xMarkPixel

xMarkPixel is be the pixel version of xMark

protected double xMax

xMax will contain the default numerical value of the largest x-coordinate displayed

protected double xMaxCurrent

This will hold the current parameter for the grid that will be used for drawing. When in zoomIn or zoomOut mode it may differ from xMax which will be used to preserve the default values.

protected int xMaxPixel

The pixel version of xMaxCurrent

protected double xMin

xMin will contain the default numerical value of the smallest x-coordinate displayed

protected double xMinCurrent

This will hold the current parameter for the grid that will be used for drawing. When in zoomIn or zoomOut mode it may differ from xMin which will be used to preserve the default values.

protected int xMinPixel

The pixel version of xMinCurrent

protected double xRange

xRange will contain the mathematical width of the coordinate system. (as opposed to the pixel width.)

protected int xValue1

Used to hold the coordinates of the rectange used when dragging the mouse in zoom box mode

protected int xValue2

Used to hold the coordinates of the rectange used when dragging the mouse in zoom box mode

protected double xZeroMath

xZeroMath is the math version of the x-coordinate of the "origin". This will correspond to x=0, if possible, but, in general, it will be where the axes cross.

protected int xZeroPixel

xZeroPixel is the pixel version of the x-coordinate of the "origin". This will correspond to x=0, if possible, but, in general, it will be where the axes cross.

protected int yBorder

yBorder will contain the number of pixels to be designated for the border in the y direction that will be added, when necessary, to leave room for the labels.

protected int yFontWidth

yFontWidth contains the width of the largest string to be displayed along the y axis.

protected double yHashMark

yHashMarks will contain the mathematical distance between the hash marks on the y axis

protected int yHashMarkPixel

yHashMarkPixel will contain the pixel distance between the hash marks on the y axis

protected java.lang.String yLabel

yLabel will contain the label to be displayed for the y-axis

protected double yMark

yMark will be the mathematical distance between gridlines on the y-axis.

protected int yMarkPixel

yMarkPixel is be the pixel version of yMark

protected double yMax

yMax will contain the default numerical value of the largest y-coordinate displayed

protected double yMaxCurrent

This will hold the current parameter for the grid that will be used for drawing. When in zoomIn or zoomOut mode it may differ from yMax which will be used to preserve the default values.

protected int yMaxPixel

The pixel version of yMaxCurrent

protected double yMin

yMin will contain the default numerical value of the smallest y-coordinate displayed

protected double yMinCurrent

This will hold the current parameter for the grid that will be used for drawing. When in zoomIn or zoomOut mode it may differ from yMin which will be used to preserve the default values.

protected int yMinPixel

The pixel version of yMinCurrent

protected double yRange

yRange will contain the mathematical height of the coordinate system. (as opposed to the pixel height.)

protected int yValue1

Used to hold the coordinates of the rectange used when dragging the mouse in zoom box mode

protected int yValue2

Used to hold the coordinates of the rectange used when dragging the mouse in zoom box mode

protected double yZeroMath

yZeroMath is the math version of the y-coordinate of the "origin". This will correspond to y=0, if possible, but, in general, it will be where the axes cross.

protected int yZeroPixel

yZeroPixel is the pixel version of the y-coordinate of the "origin". This will correspond to y=0, if possible, but, in general, it will be where the axes cross.

protected int zoomFactor

This will determine the factor by which you zoom in or out

protected int zoomMode

the value of zoomMode will determine how the Grid will respond to a mouse-click. It will either do nothing, zoom in, zoom out, zoom in on a box, or display the coordinates of the point depending on the mode.

public MathGrid()

protected void adjustBorders()

This method will adjust the borders to make sure that there is room to display the labels

public java.awt.Color getAxesColor()

Gets the color that will be used to draw the axes. The default is black

Returns:

The color of the axes

public java.awt.Color getGridColor()

Gets the color to be used for the gridlines

Returns:

The color of the gridlines.

public int getGridLines()

Gets the approximate number of gridlines to be drawn.

Returns:

The value of gridLines, which is used to determine the approximate number of gridlines to be drawn.

public java.lang.String getMessage()

Gets the message that will appear at the top of the grid.

Returns:

The message that will appear at the top of the grid.

public java.lang.String getTitle()

Gets the title that is displayed at the bottom of the grid.

Returns:

The title that is displayed at the bottom of the grid.

public java.lang.String getXLabel()

Gets the label that will be used for the x-axis.

Returns:

The label for the x-axis.

public double getXMax()

Gets the value of xMax

Returns:

The largest x-value on the x-axis.

public double getXMin()

Gets the value of xMin

Returns:

The smallest value on the x-axis

public java.lang.String getYLabel()

Gets the Label to be used for the y-axis

Returns:

The label for the y-axis.

public double getYMax()

Gets the value of yMax

Returns:

The largest y-value on the y-axis

public double getYMin()

Gets the value of YMin

Returns:

The smallest y-value on the y-axis

public int getZoomFactor()

Gets the factor that will be used in Zoom In or Zoom Out mode.

Returns:

The factor that will be used in Zoom In or Zoom Out mode.

public int getZoomMode()

Gets the value of zoomMode

Returns:

The value of zoomMode which determines the zoom mode for the MathGrid.

public static void main(String[] argv)

public void paintComponent(Graphics a)

Paints the Grid

Parameters:

a - The Graphics context used to paint the grid

Overrides:

paintComponent in class JComponent

public void reshape(int x,
                    int y,
                    int width,
                    int height)

This method has been deprecated and should be removed when possible. It was put in because the VC environment appeared to use it

Parameters:

x - x coordinate

y - y coordinate

width - Width

height - Height

Overrides:

reshape in class JComponent

public void resize(int width,
                   int height)

This method has been deprecated and should be removed when possible. It was put in because the VC environment appeared to use it

Parameters:

width - The width of the region

height - The height of the region

Overrides:

resize in class Component

public void setAxesColor(Color axesColor)

Sets the color that will be used to draw the axes.

Parameters:

axesColor - The color for the axes.

public void setBounds(int x,
                      int y,
                      int width,
                      int height)

overrides the setBounds method so that it will update the parameters before redrawing.

Parameters:

x - The x-coordinate of the upper left hand corner of the MathGrid in its new location in the container.

y - The y-coordinate of the upper left hand corner of the MathGrid in its new location in its container.

width - The width in pixels.

height - The height in pixels

Overrides:

setBounds in class Component

public void setBounds(Rectangle r)

overrides the setBounds method so that it will update the parameters before redrawing.

Parameters:

r - The rectangle correponding to the new bounds

Overrides:

setBounds in class Component

public void setGridColor(Color gridColor)

Sets the color to be used for the gridlines. The default is white.

Parameters:

gridColor - The color of the gridlines.

public void setGridLines(int gridLines)

Sets the approximate number of gridlines to be drawn. Static variables GRIDOFF, GRIDCOARSE, GRIDNORMAL, and GRIDFINE, correspond to approximately 0, 10, 20, and 30 lines, respectively.

Parameters:

gridLines - The approximate number of gridlines to be drawn. (It may be adjusted to make the gridlines appear at nicer numbers)

public void setMessage(String message)

Sets the message that will be displayed at the top of the grid.

Parameters:

message - Gets the message that is displayed at the bottom of the grid.

public void setSize(Dimension d)

Overrides the setSize method so that it will update the parmeters before redrawing.

Parameters:

d - The dimension object that determines the new size.

Overrides:

setSize in class Component

public void setSize(int w,
                    int h)

Overrides the setSize method so that it will update the parameters before redrawing.

Parameters:

w - The width in pixels of the new size.

h - The height in pixels of the new size

Overrides:

setSize in class Component

public void setTitle(String title)

Sets the title that will be displayed at the bottom of the graph.

Parameters:

title - The title that will be displayed at the bottom of the grid.

public void setXLabel(String xLabel)

Sets the label to be used for the x-axis.

Parameters:

xLabel - The label for the x-axis. The default is "x".

public void setXMax(double xMax)

Sets the value of xMax

Parameters:

xMax - The largest value on the x-axis

public void setXMin(double xMin)

Sets the value of xMin

Parameters:

xMin - The smallest value represented on the x-axis.

public void setYLabel(String yLabel)

Sets the label to be used for the y-axis.

Parameters:

yLabel - The label for the y-axis. The default is "y".

public void setYMax(double yMax)

Sets the value of yMax

Parameters:

yMax - The largest y-value on the y-axis.

public void setYMin(double yMin)

Sets the value of yMin

Parameters:

yMin - The smallest value on the y-axis

public void setZoomFactor(int zoomFactor)

Sets the factor that will be used for zooming in Zoom In, or Zoom Out mode. In Zoom In mode it will divide by this factor and in Zoom Out mode it will multiply by it to determine the new range of x and y values.

Parameters:

zoomFactor - The factor that will be used in zooming. Any number smaller than one will be ignored.

public void setZoomMode(int zoomMode)

This sets the zoom mode by assigning a value to the parameter zoomMode. Depending on the value of zoomMode the MathGrid will zoom in, zoom out show the coordinates of a point, redraw in the coordinates of a box drawn by clicking and dragging, or disable zooming.

Parameters:

zoomMode - The integer that will determine the zoom mode. Static constants ZOOMIN, ZOOMOUT, ZOOMBOX, SHOWPOINT, ZOOMOFF are provided.

See Also:

ZOOMOUT, ZOOMIN, ZOOMBOX, SHOWPOINT, ZOOMOFF

public java.lang.String toString()

Gives a String description of the coordinate system

Returns:

A string description of the coordinate system.

Overrides:

toString in class Component

protected void updateParameters()

This method will update the parameters to reflect any changes made in xMin, xMax, yMin, yMax, or the overall size of the MathGrid.

public int xMathToPixel(double x)

Converts a math x coordinate into its corresponding coordinate in pixels.

Parameters:

x - The x-coordinate to be converted.

Returns:

The distance in pixels from the left side of the MathGrid of the point with this x-coordinate

public double xPixelToMath(int p)

Converts the pixel version of an x-coordinate into its corresponding math coordinate

Parameters:

p - The distance in pixels from the left hand side of the MathGrid

Returns:

The double precsion floating point value that corresponds to this x-coordinate of this in the plane.

public int yMathToPixel(double y)

Converts a math y coordinate into its corresponding coordinate in pixels.

Parameters:

y - The y-coordinate to be converted.

Returns:

The distance in pixels from the top of the MathGrid of the point with this y-coordinate

public double yPixelToMath(int p)

Converts the pixel version of the y-coordinate into the mathematical one

Parameters:

p - The distance in pixels from the top of the MathGrid of a point.

Returns:

The double-precision floating point number that gives the y-coordinate in the plane of a point at that location.

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