org.opensourcephysics.display2d
Class CellLatticePC

java.lang.Object
  org.opensourcephysics.display.MeasuredImage
      org.opensourcephysics.display2d.CellLatticePC

All Implemented Interfaces:

Drawable, Measurable, ByteLattice

public class CellLatticePC
extends MeasuredImage
implements ByteLattice

A CellLattice displays an array where each array element can assume one of 256 values. Array values are drawn using an image raster. Each cell is a single pixel using an image that mathches the the lattice dimension. The image is then scaled so that every pixel is drawn as a rectangle. 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. The lattice is drawn as an array of rectangles to distinguish between the two possible values.

Version:

1.0

Author:

Wolfgang Christian

Constructor Summary

CellLatticePC()
Constructs a cell lattice.

CellLatticePC(int _nx, int _ny)
Constructs a cell lattice with the given size.

Method Summary

void	createDefaultColors() Creates the default palette.
SiteLattice	createSiteLattice() Creates a new SiteLattice containing the same data as this lattice.
void	draw(DrawingPanel panel, java.awt.Graphics g) Draws the lattice and the grid.
int	getNx() Gets the number of x entries.
int	getNy() Gets the number of y entries.
byte	getValue(int ix, int iy) Gets a value from the given location.
int	indexFromPoint(double x, double y) Determines the lattice index (row-major order) from given x and y world coordinates Returns -1 if the world coordinates are outside the lattice.
void	randomize() Randomizes the lattice values.
void	resizeLattice(int _nx, int _ny) Resizes the lattice using the given number of x and y entries.
void	setAll(byte[][] val) Sets a block of data to new values.
void	setAll(byte[][] val, double xmin, double xmax, double ymin, double ymax) Sets the lattice values and scale.
void	setBlock(byte[][] val) Sets a block of data starting at (0,0) to new values.
void	setBlock(int ix_offset, int iy_offset, byte[][] val) Sets a block of data to byte values.
void	setBlock(int ix_offset, int iy_offset, int[][] val) Sets a block of data to integer values.
void	setCol(int ix, int iy_offset, byte[] val) Sets a column to new values.
void	setColorPalette(java.awt.Color[] colors) Sets the color palette.
void	setGridLineColor(java.awt.Color color) Sets the grid color.
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) Assigns a scale to the lattice in world units.
void	setRow(int iy, int ix_offset, byte[] val) Sets a row to new values.
void	setShowGridLines(boolean showGridLines) Outlines the lattice boundaries with a grid.
void	setValue(int ix, int iy, byte val) Sets the given x,y location to a value.
void	setXMax(double _value) Sets xmax.
void	setXMin(double _value) Sets xmin.
void	setYMax(double _value) Sets ymax.
void	setYMin(double _value) Sets ymin.
javax.swing.JFrame	showLegend() Shows the color associated with each value.
int	xToIndex(double x) Gets closest index from the given x world coordinate.
int	yToIndex(double y) Gets closest index from the given y world coordinate.

Methods inherited from class org.opensourcephysics.display.MeasuredImage

getImage, getXMax, getXMin, getYMax, getYMin, isMeasured, setImage, setVisible

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.opensourcephysics.display2d.ByteLattice

setVisible

Methods inherited from interface org.opensourcephysics.display.Measurable

getXMax, getXMin, getYMax, getYMin, isMeasured

Constructor Detail

CellLatticePC

public CellLatticePC()

Constructs a cell lattice. Cell values are -128 to 127.

CellLatticePC

public CellLatticePC(int _nx,
                     int _ny)

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

Parameters:

_nx - the number of values in x direction

_ny - the number of values in y direction

Method Detail

createSiteLattice

public SiteLattice createSiteLattice()

Creates a new SiteLattice containing the same data as this lattice.

resizeLattice

public void resizeLattice(int _nx,
                          int _ny)

Resizes the lattice using the given number of x and y entries.

Specified by:

resizeLattice in interface ByteLattice

Parameters:

_nx - the number of x entries

_ny - the number of y entries

setXMin

public void setXMin(double _value)

Description copied from interface: ByteLattice

Sets xmin.

Specified by:

setXMin in interface ByteLattice

Overrides:

setXMin in class MeasuredImage

Parameters:

_value - double

setXMax

public void setXMax(double _value)

Description copied from interface: ByteLattice

Sets xmax.

Specified by:

setXMax in interface ByteLattice

Overrides:

setXMax in class MeasuredImage

Parameters:

_value - double

setYMin

public void setYMin(double _value)

Description copied from interface: ByteLattice

Sets ymin.

Specified by:

setYMin in interface ByteLattice

Overrides:

setYMin in class MeasuredImage

Parameters:

_value - double

setYMax

public void setYMax(double _value)

Description copied from interface: ByteLattice

Sets ymax.

Specified by:

setYMax in interface ByteLattice

Overrides:

setYMax in class MeasuredImage

Parameters:

_value - double

getNx

public int getNx()

Gets the number of x entries.

Specified by:

getNx in interface ByteLattice

Returns:

nx

getNy

public int getNy()

Gets the number of y entries.

Specified by:

getNy in interface ByteLattice

Returns:

ny

setMinMax

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

Assigns a scale to the lattice in world units. This method does not change lattice values; it assigns units corners of the lattice.

Specified by:

setMinMax in interface ByteLattice

Overrides:

setMinMax in class MeasuredImage

Parameters:

xmin -

xmax -

ymin -

ymax -

draw

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

Draws the lattice and the grid.

Specified by:

draw in interface Drawable

Overrides:

draw in class MeasuredImage

Parameters:

panel -

g -

setAll

public void setAll(byte[][] val)

Sets a block of data to new values. The lattice is resized to fit the new data if needed.

Parameters:

val -

setAll

public void setAll(byte[][] val,
                   double xmin,
                   double xmax,
                   double ymin,
                   double ymax)

Sets the lattice values and scale. The lattice is resized to fit the new data if needed.

Specified by:

setAll in interface ByteLattice

Parameters:

val - int[][] the new values

xmin - double

xmax - double

ymin - double

ymax - double

setBlock

public void setBlock(byte[][] val)

Sets a block of data starting at (0,0) to new values.

Specified by:

setBlock in interface ByteLattice

Parameters:

val -

setBlock

public void setBlock(int ix_offset,
                     int iy_offset,
                     byte[][] val)

Sets a block of data to byte values.

Specified by:

setBlock in interface ByteLattice

Parameters:

ix_offset - the x offset into the lattice

iy_offset - the y offset into the lattice

val - the new values

setBlock

public void setBlock(int ix_offset,
                     int iy_offset,
                     int[][] val)

Sets a block of data to integer values.

Parameters:

ix_offset - the x offset into the lattice

iy_offset - the y offset into the lattice

val - the new values

setCol

public void setCol(int ix,
                   int iy_offset,
                   byte[] val)

Sets a column to new values.

Specified by:

setCol in interface ByteLattice

Parameters:

ix - the x index of the column

iy_offset - the y offset in the column

val - values in column

setRow

public void setRow(int iy,
                   int ix_offset,
                   byte[] val)

Sets a row to new values.

Specified by:

setRow in interface ByteLattice

Parameters:

iy - the y index of the row

ix_offset - the x offset in the row

val -

setValue

public void setValue(int ix,
                     int iy,
                     byte val)

Sets the given x,y location to a value.

Specified by:

setValue in interface ByteLattice

Parameters:

ix -

iy -

val -

getValue

public byte getValue(int ix,
                     int iy)

Gets a value from the given location.

Specified by:

getValue in interface ByteLattice

Parameters:

ix -

iy -

Returns:

the value.

indexFromPoint

public int indexFromPoint(double x,
                          double y)

Determines the lattice index (row-major order) from given x and y world coordinates Returns -1 if the world coordinates are outside the lattice.

Specified by:

indexFromPoint in interface ByteLattice

Parameters:

x -

y -

Returns:

index

xToIndex

public int xToIndex(double x)

Gets closest index from the given x world coordinate.

Specified by:

xToIndex in interface ByteLattice

Parameters:

x - double the coordinate

Returns:

int the index

yToIndex

public int yToIndex(double y)

Gets closest index from the given y world coordinate.

Specified by:

yToIndex in interface ByteLattice

Parameters:

y - double the coordinate

Returns:

int the index

setShowGridLines

public void setShowGridLines(boolean showGridLines)

Outlines the lattice boundaries with a grid.

Specified by:

setShowGridLines in interface ByteLattice

Parameters:

showGridLines -

randomize

public void randomize()

Randomizes the lattice values.

Specified by:

randomize in interface ByteLattice

showLegend

public javax.swing.JFrame showLegend()

Shows the color associated with each value.

Specified by:

showLegend in interface ByteLattice

Returns:

the JFrame containing the legend

setColorPalette

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

Sets the color palette.

Specified by:

setColorPalette in interface ByteLattice

Parameters:

colors -

setGridLineColor

public void setGridLineColor(java.awt.Color color)

Sets the grid color.

Specified by:

setGridLineColor in interface ByteLattice

Parameters:

color -

setIndexedColor

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

Sets the color for a single index.

Specified by:

setIndexedColor in interface ByteLattice

Parameters:

i -

color -

createDefaultColors

public void createDefaultColors()

Creates the default palette.

Specified by:

createDefaultColors in interface ByteLattice