org.geotools.mbstyle.function

Class ExponentialFunction

Object

ExpressionAbstract

FunctionImpl

ExponentialFunction

All Implemented Interfaces:

Expression, Function

public class ExponentialFunction
extends FunctionImpl

Generate an output by interpolating between stops just less than and just greater than the function input. The domain must be numeric.

Parameters:

0. The interpolation input
1. The base of the interpolation
2. (...n) The remaining args are interpreted as pairs of stop values (input, output) for the interpolation. There must be an even number.

Author:

Jody Garnett (Boundless)

Field Summary

Fields

Modifier and Type	Field and Description
static FunctionName	NAME

Fields inherited from class FunctionImpl

functionName

Fields inherited from interface Expression

NIL

Constructor Summary

Constructors

Constructor and Description
ExponentialFunction()

Method Summary

Modifier and Type	Method and Description
Object	evaluate(Object object) Default implementation simply returns the fallbackValue.
<T> T	evaluate(Object object, Class<T> context) Default implementation delegates handling of context conversion to Converters utility class.
List<ExponentialFunction.Stop>	getStops(List<Expression> parameters)

Methods inherited from class FunctionImpl

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

Methods inherited from class Object

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

Field Detail

NAME

public static final FunctionName NAME

Constructor Detail

ExponentialFunction

public ExponentialFunction()

Method Detail

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

evaluate

public <T> T evaluate(Object object,
                      Class<T> context)

Description copied from class: ExpressionAbstract

Default implementation delegates handling of context conversion to Converters utility class.

Subclasses are expected to make use of the Converters utility class (as the easiest way to provide value morphing in conformance with the Filter specification).

Specified by:

evaluate in interface Expression

Overrides:

evaluate in class ExpressionAbstract

Type Parameters:

T - The type of the returned object.

Parameters:

object - The object to evaluate the expression against.

context - The type of the resulting value of the expression.

Returns:

Evaluates the given expression based on the content of the given object an an instance of context.

getStops

public List<ExponentialFunction.Stop> getStops(List<Expression> parameters)