Package org.geotools.filter.function.color

Class GrayscaleFunction

Object

ExpressionAbstract

FunctionImpl

GrayscaleFunction

All Implemented Interfaces:

Expression, Function

public class GrayscaleFunction
extends FunctionImpl

Tint lesscss.org color function. Takes one colors and mixes it with white based on a weight (and their eventual alpha)

Author:

Andrea Aime - GeoSolutions

Field Summary

Fields

Modifier and Type	Field	Description
static FunctionName	NAME

Fields inherited from class FunctionImpl

functionName

Fields inherited from interface Expression

NIL

Constructor Summary

Constructors

Constructor	Description
GrayscaleFunction()

Method Summary

Modifier and Type	Method	Description
Object	evaluate(Object object)	Default implementation simply returns the fallbackValue.
String	toString()	Creates a String representation of this Function with the function name and the arguments.

Methods inherited from class FunctionImpl

accept, dispatchArguments, equals, functionName, getFallbackValue, getFunctionName, getName, getParameters, getParameterValue, getParameterValue, hashCode, setFallbackValue, setName, setParameters

Methods inherited from class ExpressionAbstract

evaluate

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface Expression

evaluate

Field Details

NAME

public static FunctionName NAME

Constructor Details

GrayscaleFunction

public GrayscaleFunction()

Method Details

evaluate

public Object evaluate(Object object)

Description copied from class: FunctionImpl

Default implementation simply returns the fallbackValue.

Please override this method to produce a value based on the provided arguments.

Specified by:

evaluate in interface Expression

Overrides:

evaluate in class FunctionImpl

Parameters:

object - Object being evaluated; often a Feature

Returns:

value for the provided object

toString

public String toString()

Creates a String representation of this Function with the function name and the arguments.

Overrides:

toString in class FunctionImpl