de.gsi.chart.renderer.spi

Class ContourDataSetRenderer

java.lang.Object

de.gsi.chart.renderer.spi.AbstractDataSetManagement<ContourDataSetRenderer>

de.gsi.chart.renderer.spi.ContourDataSetRenderer

All Implemented Interfaces:

Renderer

public class ContourDataSetRenderer
extends AbstractDataSetManagement<ContourDataSetRenderer>
implements Renderer

https://en.wikipedia.org/wiki/Marching_squares#Isoline

Author:

rstein

Property Summary

Type	Property and Description
ObjectProperty<ColorGradient>	colorGradient Color gradient (linear) used to encode data point values.
BooleanProperty	computeLocalRange Indicates if the chart should compute the min/max z-Axis for the local (true) or global (false) visible range
ObjectProperty<ContourType>	contourType Indicates if the chart should plot contours (true) or color gradient map (false)
IntegerProperty	maxContourSegments
IntegerProperty	minHexTileSize
IntegerProperty	quantisationLevels
BooleanProperty	smooth Indicates if the chart should smooth colors between data points or render each data point as a rectangle with uniform color.

Properties inherited from class de.gsi.chart.renderer.spi.AbstractDataSetManagement

showInLegendProperty

Properties inherited from interface de.gsi.chart.renderer.Renderer

showInLegendProperty

Field Summary

Fields

Modifier and Type	Field and Description
protected Rectangle	gradientRect

Fields inherited from class de.gsi.chart.renderer.spi.AbstractDataSetManagement

showInLegend

Constructor Summary

Constructors

Constructor and Description
ContourDataSetRenderer()

Method Summary

Modifier and Type	Method and Description
ObjectProperty<ColorGradient>	colorGradientProperty() Color gradient (linear) used to encode data point values.
boolean	computeLocalRange() Returns the value of the computeLocalRangeProperty().
BooleanProperty	computeLocalRangeProperty() Indicates if the chart should compute the min/max z-Axis for the local (true) or global (false) visible range
ObjectProperty<ContourType>	contourTypeProperty() Indicates if the chart should plot contours (true) or color gradient map (false)
static double	convolution(double[][] pixelMatrix)
Canvas	drawLegendSymbol(DataSet dataSet, int dsIndex, int width, int height)
static double	erosionConvolution(double[][] pixelMatrix)
static double	erosionConvolution2(double[][] pixelMatrix)
ColorGradient	getColorGradient() Returns the value of the colorGradientProperty().
ContourType	getContourType() Returns the value of the contourTypeProperty().
int	getMaxContourSegments()
int	getMinHexTileSizeProperty()
int	getNumberQuantisationLevels()
protected ContourDataSetRenderer	getThis()
Axis	getZAxis()
boolean	isSmooth() Returns the value of the smoothProperty().
protected void	layoutZAxis(Axis zAxis, de.gsi.chart.renderer.spi.ContourDataSetRenderer.Cache lCache)
IntegerProperty	maxContourSegmentsProperty()
IntegerProperty	minHexTileSizeProperty()
IntegerProperty	quantisationLevelsProperty()
void	render(GraphicsContext gc, Chart chart, int dataSetOffset, ObservableList<DataSet> datasets)
void	setColorGradient(ColorGradient value) Sets the value of the colorGradientProperty().
void	setComputeLocalRange(boolean value) Sets the value of the computeLocalRangeProperty().
void	setContourType(ContourType value) Sets the value of the contourTypeProperty().
ContourDataSetRenderer	setMaxContourSegments(int nSegments) suppresses contour segments being drawn that have more than the specified number of sub-segments
ContourDataSetRenderer	setMinHexTileSizeProperty(int minSize)
ContourDataSetRenderer	setNumberQuantisationLevels(int nQuantisation)
void	setSmooth(boolean value) Sets the value of the smoothProperty().
void	shiftZAxisToLeft()
void	shiftZAxisToRight()
BooleanProperty	smoothProperty() Indicates if the chart should smooth colors between data points or render each data point as a rectangle with uniform color.

Methods inherited from class de.gsi.chart.renderer.spi.AbstractDataSetManagement

copyMetaData, getAxes, getDataSetCopy, getDatasets, getDatasetsCopy, getDatasetsCopy, getErrorDataSetCopy, getFirstAxis, setShowInLegend, showInLegend, showInLegendProperty

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.gsi.chart.renderer.Renderer

getAxes, getDatasets, getDatasetsCopy, setShowInLegend, showInLegend, showInLegendProperty

Property Detail

colorGradient

public ObjectProperty<ColorGradient> colorGradientProperty

Color gradient (linear) used to encode data point values.

See Also:

getColorGradient(), setColorGradient(ColorGradient)

computeLocalRange

public BooleanProperty computeLocalRangeProperty

Indicates if the chart should compute the min/max z-Axis for the local (true) or global (false) visible range

See Also:

setComputeLocalRange(boolean)

contourType

public ObjectProperty<ContourType> contourTypeProperty

Indicates if the chart should plot contours (true) or color gradient map (false)

See Also:

getContourType(), setContourType(ContourType)

maxContourSegments

public IntegerProperty maxContourSegmentsProperty

Returns:

the property controlling the maximum number of sub-segments allowed for a contour to be drawn.

minHexTileSize

public IntegerProperty minHexTileSizeProperty

quantisationLevels

public IntegerProperty quantisationLevelsProperty

smooth

public BooleanProperty smoothProperty

Indicates if the chart should smooth colors between data points or render each data point as a rectangle with uniform color.

By default smoothing is disabled.

See Also:

isSmooth(), setSmooth(boolean)

Field Detail

gradientRect

protected final Rectangle gradientRect

Constructor Detail

ContourDataSetRenderer

public ContourDataSetRenderer()

Method Detail

colorGradientProperty

public ObjectProperty<ColorGradient> colorGradientProperty()

Color gradient (linear) used to encode data point values.

See Also:

getColorGradient(), setColorGradient(ColorGradient)

computeLocalRange

public boolean computeLocalRange()

Returns the value of the computeLocalRangeProperty().

Returns:

true if the local range calculation is applied, false otherwise

computeLocalRangeProperty

public BooleanProperty computeLocalRangeProperty()

Indicates if the chart should compute the min/max z-Axis for the local (true) or global (false) visible range

See Also:

setComputeLocalRange(boolean)

contourTypeProperty

public ObjectProperty<ContourType> contourTypeProperty()

Indicates if the chart should plot contours (true) or color gradient map (false)

See Also:

getContourType(), setContourType(ContourType)

drawLegendSymbol

public Canvas drawLegendSymbol(DataSet dataSet,
                               int dsIndex,
                               int width,
                               int height)

Specified by:

drawLegendSymbol in interface Renderer

Parameters:

dataSet - the data set for which the representative icon should be generated

dsIndex - index within renderer set

width - requested width of the returning Canvas

height - requested height of the returning Canvas

Returns:

a graphical icon representation of the given data sets

getColorGradient

public ColorGradient getColorGradient()

Returns the value of the colorGradientProperty().

Returns:

the color gradient used for encoding data values

getContourType

public ContourType getContourType()

Returns the value of the contourTypeProperty().

Returns:

if the chart should plot contours (true) or color gradient map (false)

getMaxContourSegments

public int getMaxContourSegments()

Returns:

the maximum number of segments for which a contour is being drawn

getMinHexTileSizeProperty

public int getMinHexTileSizeProperty()

getNumberQuantisationLevels

public int getNumberQuantisationLevels()

getThis

protected ContourDataSetRenderer getThis()

Specified by:

getThis in class AbstractDataSetManagement<ContourDataSetRenderer>

Returns:

the instance of this ContourDataSetRenderer.

getZAxis

public Axis getZAxis()

isSmooth

public boolean isSmooth()

Returns the value of the smoothProperty().

Returns:

true if the smoothing should be applied, false otherwise

layoutZAxis

protected void layoutZAxis(Axis zAxis,
                           de.gsi.chart.renderer.spi.ContourDataSetRenderer.Cache lCache)

maxContourSegmentsProperty

public IntegerProperty maxContourSegmentsProperty()

Returns:

the property controlling the maximum number of sub-segments allowed for a contour to be drawn.

minHexTileSizeProperty

public IntegerProperty minHexTileSizeProperty()

quantisationLevelsProperty

public IntegerProperty quantisationLevelsProperty()

render

public void render(GraphicsContext gc,
                   Chart chart,
                   int dataSetOffset,
                   ObservableList<DataSet> datasets)

Specified by:

render in interface Renderer

setColorGradient

public void setColorGradient(ColorGradient value)

Sets the value of the colorGradientProperty().

Parameters:

value - the gradient to be used

setComputeLocalRange

public void setComputeLocalRange(boolean value)

Sets the value of the computeLocalRangeProperty().

Parameters:

value - true if the local range calculation is applied, false otherwise

setContourType

public void setContourType(ContourType value)

Sets the value of the contourTypeProperty().

Parameters:

value - if the chart should plot contours (true) or color gradient map (false)

setMaxContourSegments

public ContourDataSetRenderer setMaxContourSegments(int nSegments)

suppresses contour segments being drawn that have more than the specified number of sub-segments

Parameters:

nSegments - the maximum number of segments

Returns:

itself

setMinHexTileSizeProperty

public ContourDataSetRenderer setMinHexTileSizeProperty(int minSize)

setNumberQuantisationLevels

public ContourDataSetRenderer setNumberQuantisationLevels(int nQuantisation)

setSmooth

public void setSmooth(boolean value)

Sets the value of the smoothProperty().

Parameters:

value - true to enable smoothing

shiftZAxisToLeft

public void shiftZAxisToLeft()

shiftZAxisToRight

public void shiftZAxisToRight()

smoothProperty

public BooleanProperty smoothProperty()

Indicates if the chart should smooth colors between data points or render each data point as a rectangle with uniform color.

By default smoothing is disabled.

See Also:

isSmooth(), setSmooth(boolean)

convolution

public static double convolution(double[][] pixelMatrix)

erosionConvolution

public static double erosionConvolution(double[][] pixelMatrix)

erosionConvolution2

public static double erosionConvolution2(double[][] pixelMatrix)