Package nz.org.riskscape.engine.steps

Class EnlargeStep

java.lang.Object

nz.org.riskscape.engine.steps.BaseStep<EnlargeStep.Params>

nz.org.riskscape.engine.steps.EnlargeStep

All Implemented Interfaces:

nz.org.riskscape.engine.Identified, nz.org.riskscape.engine.pipeline.Step

public class EnlargeStep
extends BaseStep<EnlargeStep.Params>

Step to enlarge (buffer) a geometry member.

Mainly intended for use with lines that represent road centre lines.

May optionally remove overlaps from the enlarged geometries. For each overlap (between two geometries) the whole overlap will be removed from one of those geometries. As such overlap removal is not likely to be completely fair. But for the intended use of enlarging road centrelines this should be sufficient.

This functionality has been added as a step to work around not having a means to replace struct members in the expression language. If that had been available enlarging (without overlap removal) could be done in a function or an aggregation function when removing overlaps. Using expression language functions is always preferred to added special purpose steps.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	EnlargeStep.EnlargeMode
static class	EnlargeStep.Params

Field Summary

Fields

Modifier and Type	Field	Description
static final String	PROCESS_METRIC_NAME

Fields inherited from interface nz.org.riskscape.engine.pipeline.Step

FUNCTOR_INTERFACES

Constructor Summary

Constructors

Constructor	Description
EnlargeStep(nz.org.riskscape.engine.Engine engine)

Method Summary

Modifier and Type	Method	Description
nz.org.riskscape.problem.ResultOrProblems<? extends nz.org.riskscape.engine.pipeline.Realized>	realize(EnlargeStep.Params parameters)

Methods inherited from class nz.org.riskscape.engine.steps.BaseStep

bindInputs, bindParameters, buildParametersObject, equals, findParameterClass, getDescription, getEngine, getId, getInputArity, getInputNames, getParamContext, getParameterSet, hashCode, realize, realizeSimple, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface nz.org.riskscape.engine.Identified

getIdentifiedClass

Methods inherited from interface nz.org.riskscape.engine.pipeline.Step

getDeclaredParameter, getDeclaredParameterNames, getDeclaredParameters, getDefaultInputName, hasNamedInput

Field Details

PROCESS_METRIC_NAME

public static final String PROCESS_METRIC_NAME

See Also:

• Constant Field Values

Constructor Details

EnlargeStep

public EnlargeStep(nz.org.riskscape.engine.Engine engine)

Method Details

realize

public nz.org.riskscape.problem.ResultOrProblems<? extends nz.org.riskscape.engine.pipeline.Realized> realize(EnlargeStep.Params parameters)

Specified by:

realize in class BaseStep<EnlargeStep.Params>