net.sf.jaer.util.chart
Class Series

java.lang.Object
  net.sf.jaer.util.chart.Series

Direct Known Subclasses:

VectorSeries

public class Series
extends java.lang.Object

The Series class. A Series is a data series in a chart; its view is a Category object. The data are cached and then transferred to an OpenGL device.

Field Summary

protected java.nio.FloatBuffer	cache A buffer to cache new data points before they are transfered to the OpenGL device - if buffer extension available.
protected int	capacity The max number of data points in the series.
protected static int	DEFAULT_CAPACITY Default capacity of series
protected int	dimension The dimension of the elements (=vertices)
protected int	elementsCount number of flushed elements (= dimension * verticesCount)
protected int	elementSize number of bytes per element
protected javax.media.opengl.GL	gl The interface to opengl
protected java.nio.FloatBuffer	vertices Local buffer that holds charted points in case buffer extension not available.

Constructor Summary

Series(int dimensions)
Create a new Series object with default capacity.

Series(int dimensions, int capacity)
Create a new Series object with capacity.

Method Summary

void	add(float x, float y) Add a data item to the series cache.
void	add(float x, float y, float z) Add a data item to the series cache.
void	clear() Clears points.
void	draw(javax.media.opengl.GL gl, int method) Flushes data to opengl graphics device and draws the vertices.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_CAPACITY

protected static final int DEFAULT_CAPACITY

Default capacity of series

See Also:

Constant Field Values

dimension

protected int dimension

The dimension of the elements (=vertices)

capacity

protected int capacity

The max number of data points in the series.

elementSize

protected final int elementSize

number of bytes per element

elementsCount

protected int elementsCount

number of flushed elements (= dimension * verticesCount)

cache

protected java.nio.FloatBuffer cache

A buffer to cache new data points before they are transfered to the OpenGL device - if buffer extension available.

vertices

protected java.nio.FloatBuffer vertices

Local buffer that holds charted points in case buffer extension not available.

gl

protected javax.media.opengl.GL gl

The interface to opengl

Constructor Detail

Series

public Series(int dimensions,
              int capacity)

Create a new Series object with capacity.

Parameters:

dimensions - the number of dimensions (2 or 3)

capacity - max number of points

Series

public Series(int dimensions)

Create a new Series object with default capacity.

Parameters:

dimensions - the number of dimensions (2 or 3)

Method Detail

add

public void add(float x,
                float y)

Add a data item to the series cache.

Parameters:

x - the x value

y - the y value

add

public void add(float x,
                float y,
                float z)

Add a data item to the series cache.

clear

public void clear()

Clears points.

draw

public void draw(javax.media.opengl.GL gl,
                 int method)

Flushes data to opengl graphics device and draws the vertices. The gl object must be always the same.

Parameters:

gl - the OpenGL context (must be identical betweeen calls)

method - the method of drawing the series line segments, e.g. GL.GL_LINE_STRIP.