org.epics.graphene

Class IntensityGraph2DRenderer

java.lang.Object

org.epics.graphene.Graph2DRenderer<Graph2DRendererUpdate>

org.epics.graphene.IntensityGraph2DRenderer

public class IntensityGraph2DRenderer
extends Graph2DRenderer<Graph2DRendererUpdate>

Author:

carcassi, sjdallst, asbarber, jkfeng

Field Summary

Fields

Modifier and Type	Field and Description
protected int	zLabelMargin
protected org.epics.util.array.ListDouble	zReferenceCoords
protected List<String>	zReferenceLabels
protected org.epics.util.array.ListDouble	zReferenceValues

Fields inherited from class org.epics.graphene.Graph2DRenderer

backgroundColor, bottomAreaMargin, bottomMargin, g, labelColor, labelFont, labelFontMetrics, leftAreaMargin, leftMargin, referenceLineColor, rightAreaMargin, rightMargin, topAreaMargin, topMargin, xAreaCoordEnd, xAreaCoordStart, xLabelMargin, xPlotCoordEnd, xPlotCoordStart, xPlotCoordWidth, xPlotValueEnd, xPlotValueStart, xPointMargin, xReferenceCoords, xReferenceLabels, xReferenceValues, yAreaCoordEnd, yAreaCoordStart, yLabelMargin, yPlotCoordEnd, yPlotCoordHeight, yPlotCoordStart, yPlotValueEnd, yPlotValueStart, yPointMargin, yReferenceCoords, yReferenceLabels, yReferenceValues

Constructor Summary

Constructors

Constructor and Description
IntensityGraph2DRenderer() Default Constructor: makes an IntensityGraph2DRenderer of width 300 and height 200.
IntensityGraph2DRenderer(int imageWidth, int imageHeight) Uses constructor specified in super class (Graph2DRenderer)

Method Summary

Methods

Modifier and Type	Method and Description
protected void	calculateZLabels() Sets private variables to account for the space required to draw in labels for the legend.
protected void	calculateZRange(Range zDataRange) Calculates the range of the z values to be graphed based on the previous z range (if there is one).
void	draw(Graphics2D g, Cell2DDataset data) Draws an intensity graph in the given graphics context, using the given data.
protected void	drawZLabels() Draws evenly spaced labels along the legend.
Graph2DRendererUpdate	newUpdate() Creates a new update for the given graph.
protected double	scaledZ(double value) Translates a value's position in the aggregated range to a position on the legend.
void	update(IntensityGraph2DRendererUpdate update) Updates private data by getting new values from update.

Methods inherited from class org.epics.graphene.Graph2DRenderer

calculateGraphArea, calculateLabels, calculateRanges, drawBackground, drawGraphArea, drawHorizontalReferenceLines, drawValueExplicitLine, drawValueLine, drawVerticalReferenceLines, drawXLabels, drawYLabels, getImageHeight, getImageWidth, getXAggregatedRange, getXAxisRange, getXPlotRange, getYAggregatedRange, getYAxisRange, getYPlotRange, processScaledValue, scaledX, scaledY, setClip, setupDataAsAreas, setupDataAsPoints, setupXAsAreas, setupXAsPoints, setupYAsAreas, setupYAsPoints, update

Methods inherited from class java.lang.Object

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

Field Detail

zLabelMargin

protected int zLabelMargin

zReferenceCoords

protected org.epics.util.array.ListDouble zReferenceCoords

zReferenceValues

protected org.epics.util.array.ListDouble zReferenceValues

zReferenceLabels

protected List<String> zReferenceLabels

Constructor Detail

IntensityGraph2DRenderer

public IntensityGraph2DRenderer(int imageWidth,
                        int imageHeight)

Uses constructor specified in super class (Graph2DRenderer)

Parameters:

imageWidth - should be equal to the width of the bufferedImage.

imageHeight - should be equal to the height of the bufferedImage.

IntensityGraph2DRenderer

public IntensityGraph2DRenderer()

Default Constructor: makes an IntensityGraph2DRenderer of width 300 and height 200.

Method Detail

update

public void update(IntensityGraph2DRendererUpdate update)

Updates private data by getting new values from update. Uses update from super class (Graph2DRenderer) for updates that are not specific to IntensityGraph2DRenderer.

Parameters:

update - IntensityGraph2DRendererUpdate

draw

public void draw(Graphics2D g,
        Cell2DDataset data)

Draws an intensity graph in the given graphics context, using the given data. All drawing is done within the bounds specified either at initialization or at update. Different colorSchemes may be specified using the IntensityGraph2DRendererUpdate class, in combination with the update function.

Parameters:

g - Graphics2D object used to perform drawing functions within draw.

data - can not be null

newUpdate

public Graph2DRendererUpdate newUpdate()

Description copied from class: Graph2DRenderer

Creates a new update for the given graph.

Specified by:

newUpdate in class Graph2DRenderer<Graph2DRendererUpdate>

Returns:

a new update object

calculateZRange

protected void calculateZRange(Range zDataRange)

Calculates the range of the z values to be graphed based on the previous z range (if there is one). If there is a previous range, the minimum value can only be lowered and the maximum value can only be raised to match the current range.

Parameters:

zDataRange - current data range.

calculateZLabels

protected void calculateZLabels()

Sets private variables to account for the space required to draw in labels for the legend. Only called if drawLegend is true.

drawZLabels

protected void drawZLabels()

Draws evenly spaced labels along the legend.

scaledZ

protected final double scaledZ(double value)

Translates a value's position in the aggregated range to a position on the legend.

Parameters:

value - raw value

Returns:

double(scaled value)