org.eclipse.nebula.visualization.widgets.datadefinition

Class ColorMap

java.lang.Object

org.eclipse.nebula.visualization.widgets.datadefinition.ColorMap

public class ColorMap
extends java.lang.Object

Color Map data type.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ColorMap.PredefinedColorMap

Constructor Summary

Constructors

Constructor and Description
ColorMap()
ColorMap(ColorMap.PredefinedColorMap predefinedColorMap, boolean autoScale, boolean interpolate)

Method Summary

Modifier and Type	Method and Description
org.eclipse.swt.graphics.ImageData	drawImage(double[] dataArray, int dataWidth, int dataHeight, double max, double min) Calculate the image data from source data based on the color map.
org.eclipse.swt.graphics.ImageData	drawImage(IPrimaryArrayWrapper dataArray, int dataWidth, int dataHeight, double max, double min, org.eclipse.swt.graphics.ImageData imageData, boolean shrink) Calculate the image data from source data based on the color map.
org.eclipse.swt.graphics.RGB[]	getColorsLookupTable() Get a colors lookup table from 0 to 255.
java.util.LinkedHashMap<java.lang.Double,org.eclipse.swt.graphics.RGB>	getMap()
org.eclipse.swt.graphics.PaletteData	getPalette()
ColorMap.PredefinedColorMap	getPredefinedColorMap()
org.eclipse.swt.graphics.RGB	getValueRGB(ColorTuple[] colorTupleArray, double[] keyArray, double value)
boolean	isAutoScale()
boolean	isInterpolate()
void	setAutoScale(boolean autoScale)
void	setColorMap(java.util.LinkedHashMap<java.lang.Double,org.eclipse.swt.graphics.RGB> colorMap) Set a new map.
void	setInterpolate(boolean interpolate)
void	setPredefinedColorMap(ColorMap.PredefinedColorMap predefinedColorMap)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ColorMap

public ColorMap()

ColorMap

public ColorMap(ColorMap.PredefinedColorMap predefinedColorMap,
                boolean autoScale,
                boolean interpolate)

Method Detail

getMap

public java.util.LinkedHashMap<java.lang.Double,org.eclipse.swt.graphics.RGB> getMap()

Returns:

the map which back up the ColorMap

setColorMap

public void setColorMap(java.util.LinkedHashMap<java.lang.Double,org.eclipse.swt.graphics.RGB> colorMap)

Set a new map.

Parameters:

colorMap - the new map.

setAutoScale

public void setAutoScale(boolean autoScale)

Parameters:

autoScale - the autoScale to set

isAutoScale

public boolean isAutoScale()

Returns:

the autoScale

setInterpolate

public void setInterpolate(boolean interpolate)

Parameters:

interpolate - the interpolate to set

isInterpolate

public boolean isInterpolate()

Returns:

the interpolate

setPredefinedColorMap

public void setPredefinedColorMap(ColorMap.PredefinedColorMap predefinedColorMap)

Parameters:

predefinedColorMap - the predefinedColorMap to set

getPredefinedColorMap

public ColorMap.PredefinedColorMap getPredefinedColorMap()

Returns:

the predefinedColorMap

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

drawImage

public org.eclipse.swt.graphics.ImageData drawImage(IPrimaryArrayWrapper dataArray,
                                                    int dataWidth,
                                                    int dataHeight,
                                                    double max,
                                                    double min,
                                                    org.eclipse.swt.graphics.ImageData imageData,
                                                    boolean shrink)

Calculate the image data from source data based on the color map.

Parameters:

dataArray - the source data

dataWidth - number of columns of dataArray; This will be the width of image data.

dataHeight - number of rows of dataArray; This will be the height of image data.

max - the upper limit of the data in dataArray

min - the lower limit of the data in dataArray

imageData - the imageData to be filled. null if a new instance should be created.

shrink - true if area size of image data is smaller than dataWidth*dataHeight. If this is true, it will use the nearest neighbor iamge scaling algorithm as described at http://tech-algorithm.com/articles/nearest-neighbor-image-scaling/.

Returns:

the image data. null if dataWidth or dataHeight is less than 1.

drawImage

public org.eclipse.swt.graphics.ImageData drawImage(double[] dataArray,
                                                    int dataWidth,
                                                    int dataHeight,
                                                    double max,
                                                    double min)

Calculate the image data from source data based on the color map.

Parameters:

dataArray - the source data

dataWidth - number of columns of dataArray; This will be the width of image data.

dataHeight - number of rows of dataArray; This will be the height of image data.

max - the upper limit of the data in dataArray

min - the lower limit of the data in dataArray

imageData - the imageData to be filled. null if a new instance should be created.

Returns:

the image data. null if dataWidth or dataHeight is less than 1.

getValueRGB

public org.eclipse.swt.graphics.RGB getValueRGB(ColorTuple[] colorTupleArray,
                                                double[] keyArray,
                                                double value)

Parameters:

colorTupleArray -

keyArray -

value - the value which has been scaled or not based on the autoScale flag.

min -

max -

Returns:

getColorsLookupTable

public org.eclipse.swt.graphics.RGB[] getColorsLookupTable()

Get a colors lookup table from 0 to 255. This only works for autoScale is true;

Returns:

the colorsLookupTable a array of 256 colors corresponding to the value from min to max

getPalette

public org.eclipse.swt.graphics.PaletteData getPalette()