org.diirt.graphene

Class LineGraph2DRenderer

java.lang.Object

org.diirt.graphene.Graph2DRenderer<LineGraph2DRendererUpdate>

org.diirt.graphene.LineGraph2DRenderer

public class LineGraph2DRenderer
extends Graph2DRenderer<LineGraph2DRendererUpdate>

Renderer for a line graph.

Author:

carcassi

Field Summary

Fields

Modifier and Type	Field and Description
static List<InterpolationScheme>	supportedInterpolationScheme
static List<ReductionScheme>	supportedReductionScheme

Fields inherited from class org.diirt.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, xValueScale, yAreaCoordEnd, yAreaCoordStart, yLabelMargin, yPlotCoordEnd, yPlotCoordHeight, yPlotCoordStart, yPlotValueEnd, yPlotValueStart, yPointMargin, yReferenceCoords, yReferenceLabels, yReferenceValues, yValueScale

Constructor Summary

Constructors

Constructor and Description
LineGraph2DRenderer(int imageWidth, int imageHeight) Creates a new line graph renderer.

Method Summary

Modifier and Type	Method and Description
void	draw(GraphBuffer buffer, Point2DDataset data)
void	draw(Graphics2D g, List<Point2DDataset> data) Draws a graph with multiple lines, each pertaining to a different set of data.
void	draw(Graphics2D g, Point2DDataset data) Draws the graph on the given graphics context.
Integer	getFocusPixelX() Current x-position(pixel) of the value that the mouse is focused on.
int	getFocusValueIndex() Current index of the value that the mouse is focused on.
InterpolationScheme	getInterpolation() The current interpolation used for the line.
boolean	isHighlightFocusValue() Current state of highlightFocusValue.
LineGraph2DRendererUpdate	newUpdate() Creates a new update for the given graph.
protected void	processScaledValue(int index, double valueX, double valueY, double scaledX, double scaledY) Empty function, designed to be implemented in sub-classes.
void	update(LineGraph2DRendererUpdate update) Applies the update to the renderer.

Methods inherited from class org.diirt.graphene.Graph2DRenderer

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

Methods inherited from class java.lang.Object

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

Field Detail

supportedInterpolationScheme

public static List<InterpolationScheme> supportedInterpolationScheme

supportedReductionScheme

public static List<ReductionScheme> supportedReductionScheme

Constructor Detail

LineGraph2DRenderer

public LineGraph2DRenderer(int imageWidth,
                           int imageHeight)

Creates a new line graph renderer.

Parameters:

imageWidth - the graph width

imageHeight - the graph height

Method Detail

newUpdate

public LineGraph2DRendererUpdate newUpdate()

Description copied from class: Graph2DRenderer

Creates a new update for the given graph.

Specified by:

newUpdate in class Graph2DRenderer<LineGraph2DRendererUpdate>

Returns:

a new update object

getInterpolation

public InterpolationScheme getInterpolation()

The current interpolation used for the line.

Returns:

the current interpolation

isHighlightFocusValue

public boolean isHighlightFocusValue()

Current state of highlightFocusValue.

• True - highlight and show the value the mouse is on.
• False - Avoid calculation involved with finding the highlighted value/ do not highlight the value.

Returns:

true or false

getFocusValueIndex

public int getFocusValueIndex()

Current index of the value that the mouse is focused on.

Returns:

focused index (in the dataset).

getFocusPixelX

public Integer getFocusPixelX()

Current x-position(pixel) of the value that the mouse is focused on.

Returns:

the x position that the mouse is focused on in the graph (pixel).

update

public void update(LineGraph2DRendererUpdate update)

Description copied from class: Graph2DRenderer

Applies the update to the renderer.

When sub-classing, one should re-implement this method by first calling it and then applying all the updates specific to the sub-class.

Overrides:

update in class Graph2DRenderer<LineGraph2DRendererUpdate>

Parameters:

update - the update to apply

draw

public void draw(Graphics2D g,
                 Point2DDataset data)

Draws the graph on the given graphics context.

Parameters:

g - the graphics on which to display the data

data - the data to display

draw

public void draw(GraphBuffer buffer,
                 Point2DDataset data)

draw

public void draw(Graphics2D g,
                 List<Point2DDataset> data)

Draws a graph with multiple lines, each pertaining to a different set of data.

Parameters:

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

data - can not be null

processScaledValue

protected void processScaledValue(int index,
                                  double valueX,
                                  double valueY,
                                  double scaledX,
                                  double scaledY)

Description copied from class: Graph2DRenderer

Empty function, designed to be implemented in sub-classes.

Used on every value in a dataset.

Overrides:

processScaledValue in class Graph2DRenderer<LineGraph2DRendererUpdate>

Parameters:

index - the index of the value

valueX - the x value

valueY - the y value

scaledX - the x pixel

scaledY - the y pixel