org.epics.graphene

Class GraphBuffer

java.lang.Object

org.epics.graphene.GraphBuffer

public class GraphBuffer
extends Object

Author:

carcassi, sjdallst, asbarber, jkfeng

Constructor Summary

Constructors

Constructor and Description
GraphBuffer(Graph2DRenderer<?> renderer)
GraphBuffer(int width, int height)

Method Summary

Methods

Modifier and Type	Method and Description
void	drawDataImage(int xStartPoint, int yStartPoint, int[] xPointToDataMap, int[] yPointToDataMap, Cell2DDataset data, NumberColorMapInstance colorMap)
Graphics2D	getGraphicsContext()
BufferedImage	getImage()
void	setPixel(int x, int y, int color)
void	setXScaleAsCell(Range range, int xMinPixel, int xMaxPixel, ValueScale xValueScale) Sets the scaling data for the x axis assuming values are going to represent cells.
void	setXScaleAsPoint(Range range, int xMinPixel, int xMaxPixel, ValueScale xValueScale) Sets the scaling data for the x axis assuming values are going to represent points.
void	setYScaleAsCell(Range range, int yMinPixel, int yMaxPixel, ValueScale yValueScale) Sets the scaling data for the y axis assuming values are going to represent cells.
void	setYScaleAsPoint(Range range, int yMinPixel, int yMaxPixel, ValueScale yValueScale) Sets the scaling data for the y axis assuming values are going to represent points.
int	xValueToPixel(double value) Converts the given value to the pixel position.
int	yValueToPixel(double value) Converts the given value to the pixel position.

Methods inherited from class java.lang.Object

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

Constructor Detail

GraphBuffer

public GraphBuffer(int width,
           int height)

GraphBuffer

public GraphBuffer(Graph2DRenderer<?> renderer)

Method Detail

setPixel

public void setPixel(int x,
            int y,
            int color)

getImage

public BufferedImage getImage()

getGraphicsContext

public Graphics2D getGraphicsContext()

drawDataImage

public void drawDataImage(int xStartPoint,
                 int yStartPoint,
                 int[] xPointToDataMap,
                 int[] yPointToDataMap,
                 Cell2DDataset data,
                 NumberColorMapInstance colorMap)

setXScaleAsCell

public void setXScaleAsCell(Range range,
                   int xMinPixel,
                   int xMaxPixel,
                   ValueScale xValueScale)

Sets the scaling data for the x axis assuming values are going to represent cells. The minimum value is going to be positioned at the left of the xMinPixel while the maximum value is going to be position at the right of the xMaxPixel.

Parameters:

range - the range to be displayed

xMinPixel - the pixel corresponding to the minimum

xMaxPixel - the pixel corresponding to the maximum

xValueScale - the scale used to transform values to pixel

setXScaleAsPoint

public void setXScaleAsPoint(Range range,
                    int xMinPixel,
                    int xMaxPixel,
                    ValueScale xValueScale)

Sets the scaling data for the x axis assuming values are going to represent points. The minimum value is going to be positioned in the center of the xMinPixel while the maximum value is going to be position in the middle of the xMaxPixel.

Parameters:

range - the range to be displayed

xMinPixel - the pixel corresponding to the minimum

xMaxPixel - the pixel corresponding to the maximum

xValueScale - the scale used to transform values to pixel

xValueToPixel

public int xValueToPixel(double value)

Converts the given value to the pixel position.

Parameters:

value - the value

Returns:

the pixel where the value should be mapped

setYScaleAsCell

public void setYScaleAsCell(Range range,
                   int yMinPixel,
                   int yMaxPixel,
                   ValueScale yValueScale)

Sets the scaling data for the y axis assuming values are going to represent cells. The minimum value is going to be positioned at the bottom of the yMinPixel while the maximum value is going to be position at the top of the yMaxPixel.

Parameters:

range - the range to be displayed

yMinPixel - the pixel corresponding to the minimum

yMaxPixel - the pixel corresponding to the maximum

yValueScale - the scale used to transform values to pixel

setYScaleAsPoint

public void setYScaleAsPoint(Range range,
                    int yMinPixel,
                    int yMaxPixel,
                    ValueScale yValueScale)

Sets the scaling data for the y axis assuming values are going to represent points. The minimum value is going to be positioned in the center of the yMinPixel while the maximum value is going to be position in the center of the yMaxPixel.

Parameters:

range - the range to be displayed

yMinPixel - the pixel corresponding to the minimum

yMaxPixel - the pixel corresponding to the maximum

yValueScale - the scale used to transform values to pixel

yValueToPixel

public int yValueToPixel(double value)

Converts the given value to the pixel position.

Parameters:

value - the value

Returns:

the pixel where the value should be mapped