Package org.geotools.renderer.lite.gridcoverage2d

Class GradientColorMapGenerator

Object

GradientColorMapGenerator

public class GradientColorMapGenerator
extends Object

A class mainly used to parse an SVG file and create a ColorMap on top of the LinearGradientEntry contained on it, or create a ColorMap on top of a ";" separated values list of colors such as: rgb(0,0,255);rgb(0,255,0);rgb(255,0,0);... or #0000FF;#00FF00;#FF0000 as an instance. *

Author:

Daniele Romagnoli, GeoSolutions SAS

Field Summary

Fields

Modifier and Type	Field	Description
static final String	HEX_INLINEVALUE_MARKER
static final String	HEX2_INLINEVALUE_MARKER
static final String	RGB_INLINEVALUE_MARKER
static final String	RGBA_INLINEVALUE_MARKER

Method Summary

Modifier and Type	Method	Description
ColorMap	generateColorMap(double min, double max)	Generate a ColorMap object, by updating the ColorMapEntries quantities on top of the min and max values reported here.
static GradientColorMapGenerator	getColorMapGenerator(File file)	Get an SVG ColorMap generator for the specified file
static GradientColorMapGenerator	getColorMapGenerator(String colorValues)	Get an SVG ColorMap generator for the specified file
static Color	hex2Rgb(String colorStr)	Convert an hex color representation to a Color
void	setAfterColor(Color color)	Sets the color to be used after the max value.
void	setAfterColor(String color)	Sets the color to be used after the max value, as a string, it accepts the same syntax as getColorMapGenerator(String)
void	setBeforeColor(Color color)	Sets the color to be used before the min value.
void	setBeforeColor(String color)	Sets the color to be used before the min value, as a string, it accepts the same syntax as getColorMapGenerator(String)

Methods inherited from class Object

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

Field Details

RGB_INLINEVALUE_MARKER

public static final String RGB_INLINEVALUE_MARKER

See Also:

• Constant Field Values

RGBA_INLINEVALUE_MARKER

public static final String RGBA_INLINEVALUE_MARKER

See Also:

• Constant Field Values

HEX_INLINEVALUE_MARKER

public static final String HEX_INLINEVALUE_MARKER

See Also:

• Constant Field Values

HEX2_INLINEVALUE_MARKER

public static final String HEX2_INLINEVALUE_MARKER

See Also:

• Constant Field Values

Method Details

setBeforeColor

public void setBeforeColor(Color color)

Sets the color to be used before the min value. By default it's transparent

setBeforeColor

public void setBeforeColor(String color)

Sets the color to be used before the min value, as a string, it accepts the same syntax as getColorMapGenerator(String)

setAfterColor

public void setAfterColor(Color color)

Sets the color to be used after the max value. By default it's transparent

setAfterColor

public void setAfterColor(String color)

Sets the color to be used after the max value, as a string, it accepts the same syntax as getColorMapGenerator(String)

generateColorMap

public ColorMap generateColorMap(double min,
 double max)

Generate a ColorMap object, by updating the ColorMapEntries quantities on top of the min and max values reported here.

getColorMapGenerator

public static GradientColorMapGenerator getColorMapGenerator(File file)
                                                      throws SAXException,
IOException,
ParserConfigurationException

Get an SVG ColorMap generator for the specified file

Throws:

SAXException

IOException

ParserConfigurationException

getColorMapGenerator

public static GradientColorMapGenerator getColorMapGenerator(String colorValues)
                                                      throws IOException,
ParserConfigurationException

Get an SVG ColorMap generator for the specified file

Parameters:

colorValues - ";" separated list of colors in the form c1;c2;c3;... where each color can use syntaxes as rgb(r0,g0,b0), rgba(r0,g0,b0,alpha_0_to_1), #RRGGBB or 0xRRGGBB

Throws:

IOException

ParserConfigurationException

hex2Rgb

public static Color hex2Rgb(String colorStr)

Convert an hex color representation to a Color

Returns:

the Color instance related to that color HEX string