org.geotools.renderer.lite.gridcoverage2d

Class ChannelSelectionUpdateStyleVisitor

Object

DuplicatingStyleVisitor

ChannelSelectionUpdateStyleVisitor

All Implemented Interfaces:

StyleVisitor

public class ChannelSelectionUpdateStyleVisitor
extends DuplicatingStyleVisitor

ChannelSelectionUpdateStyleVisitor is a DuplicatingStyleVisitor that is used to "reset" style symbolizer's selection channel order when the GridCoverageReader used to read a coverage supports band selection. If a reader supports band selection then channel ordering is done by band selection from the reader, so symbolizer does not need to re-apply selection channel order.

Also, see AbstractGridFormat.BANDS for the reader band selection parameter description.

Field Summary

Fields inherited from class DuplicatingStyleVisitor

copyFilter, ff, pages, sf, STRICT

Constructor Summary

Constructors

Constructor and Description
ChannelSelectionUpdateStyleVisitor(SelectedChannelType[] channels)

Method Summary

Modifier and Type	Method and Description
protected ChannelSelection	copy(ChannelSelection channelSelection)
static int[]	getBandIndicesFromSelectionChannels(RasterSymbolizer symbolizer) Returns an int[] containing the indices of the coverage bands that are used for the symbolizer's selection channels

Methods inherited from class DuplicatingStyleVisitor

copy, copy, copy, copy, copy, copy, copy, copy, copy, copy, copy, copy, copy, copy, copy, copy, copy, copy, copy, copy, copy, copy, copy, copy, copy, copy, copyExpressions, copyFonts, getCopy, setStrict, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

Methods inherited from class Object

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

Constructor Detail

ChannelSelectionUpdateStyleVisitor

public ChannelSelectionUpdateStyleVisitor(SelectedChannelType[] channels)

Method Detail

copy

protected ChannelSelection copy(ChannelSelection channelSelection)

Overrides:

copy in class DuplicatingStyleVisitor

getBandIndicesFromSelectionChannels

public static int[] getBandIndicesFromSelectionChannels(RasterSymbolizer symbolizer)

Returns an int[] containing the indices of the coverage bands that are used for the symbolizer's selection channels

Parameters:

symbolizer - The input symbolizer

Returns:

the band indices array (null if no channel selection was present in symbolizer)