org.opensourcephysics.display2d
Class TriangularByteLattice

java.lang.Object
  org.opensourcephysics.display2d.TriangularByteLattice

All Implemented Interfaces:

Drawable, Measurable

public class TriangularByteLattice
extends java.lang.Object
implements Measurable

A TriangularByteLattice is an array where each array element can assume one of 256 values. Values can be set between -128 and 127. Because byte values larger than 127 overflow to negative, values can also be set between 0 and 255.

Version:

1.0

Author:

Joshua Gould, Wolfgang Christian

Constructor Summary

TriangularByteLattice(int _row, int _col)
Constructs a byte lattice with the given size.

Method Summary

void	draw(DrawingPanel panel, java.awt.Graphics g) Draws the lattice.
int	getCell(int row, int col) Gets a lattice cell value.
double	getXMax() Gets the maximum x needed to draw this object.
double	getXMin() Gets the minimum x needed to draw this object.
double	getYMax() Gets the maximum y needed to draw this object.
double	getYMin() Gets the minimum y needed to draw this object.
boolean	isMeasured() Determines if information is available to set min/max values.
void	randomize() Ranomizes the lattice values.
void	setBlock(int row_offset, int col_offset, byte[][] val) Sets a block of cells to new values.
void	setCell(int row, int col, byte val) Sets a lattice cell to a new value.
void	setCol(int row_offset, int col, byte[] val) Sets a column of cells to new values.
void	setColorPalette(java.awt.Color[] colors) Sets the color palette.
void	setIndexedColor(int i, java.awt.Color color) Sets the color for a single index.
void	setMinMax(double xmin, double xmax, double ymin, double ymax)
void	setRow(int row, int col_offset, byte[] val) Sets a row of cells to new values.
void	showLegend() Shows the color associated with each value.

Methods inherited from class java.lang.Object

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

Constructor Detail

TriangularByteLattice

public TriangularByteLattice(int _row,
                             int _col)

Constructs a byte lattice with the given size. Cell values are -128 to 127.

Parameters:

_row - the number of rows

_col - the number of columns

Method Detail

setMinMax

public void setMinMax(double xmin,
                      double xmax,
                      double ymin,
                      double ymax)

draw

public void draw(DrawingPanel panel,
                 java.awt.Graphics g)

Draws the lattice.

Specified by:

draw in interface Drawable

Parameters:

panel -

g -

setBlock

public void setBlock(int row_offset,
                     int col_offset,
                     byte[][] val)

Sets a block of cells to new values.

Parameters:

row_offset -

col_offset -

val -

setCol

public void setCol(int row_offset,
                   int col,
                   byte[] val)

Sets a column of cells to new values.

Parameters:

row_offset -

col -

val -

setRow

public void setRow(int row,
                   int col_offset,
                   byte[] val)

Sets a row of cells to new values.

Parameters:

row -

col_offset -

val -

setCell

public void setCell(int row,
                    int col,
                    byte val)

Sets a lattice cell to a new value.

Parameters:

row -

col -

val -

getCell

public int getCell(int row,
                   int col)

Gets a lattice cell value.

Parameters:

row -

col -

Returns:

the cell value.

randomize

public void randomize()

Ranomizes the lattice values.

showLegend

public void showLegend()

Shows the color associated with each value.

setColorPalette

public void setColorPalette(java.awt.Color[] colors)

Sets the color palette.

Parameters:

colors -

setIndexedColor

public void setIndexedColor(int i,
                            java.awt.Color color)

Sets the color for a single index.

Parameters:

i -

color -

isMeasured

public boolean isMeasured()

Description copied from interface: Measurable

Determines if information is available to set min/max values. Objects that store data should return false if data is null.

Specified by:

isMeasured in interface Measurable

Returns:

true if min/max values are valid

getXMin

public double getXMin()

Description copied from interface: Measurable

Gets the minimum x needed to draw this object.

Specified by:

getXMin in interface Measurable

Returns:

minimum

getYMin

public double getYMin()

Description copied from interface: Measurable

Gets the minimum y needed to draw this object.

Specified by:

getYMin in interface Measurable

Returns:

minimum

getXMax

public double getXMax()

Description copied from interface: Measurable

Gets the maximum x needed to draw this object.

Specified by:

getXMax in interface Measurable

Returns:

maximum

getYMax

public double getYMax()

Description copied from interface: Measurable

Gets the maximum y needed to draw this object.

Specified by:

getYMax in interface Measurable

Returns:

minimum