Class GridReaderLayer
- Direct Known Subclasses:
WMSLayer
,WMTSMapLayer
GridCoverage2DReader
.
Direct access to the AbstractGridCoverage2DReader
is available using getReader()
, the outline of
the raster is also available via toFeatureCollection()
for vector based rendering systems.
- Since:
- 2.7
- Author:
- Jody Garnett
-
Field Summary
FieldsModifier and TypeFieldDescriptionprotected GeneralParameterValue[]
Optional parameters to control the rendering process.protected GridCoverage2DReader
Grid coverage reader allowing direct access to raster content.Fields inherited from class RasterLayer
source
Fields inherited from class StyleLayer
style
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Constructor Summary
ConstructorsConstructorDescriptionGridReaderLayer
(GridCoverage2DReader reader, Style style) Create a lyaer to draw the provided grid coverage reader.GridReaderLayer
(GridCoverage2DReader reader, Style style, String title) Create a layer to draw the provided grid coverage reader.GridReaderLayer
(GridCoverage2DReader reader, Style style, String title, GeneralParameterValue[] params) Create layer title and optional parameters used to control the rendering process.GridReaderLayer
(GridCoverage2DReader reader, Style style, GeneralParameterValue[] params) Create a layer with optional parameters to control the rendering process. -
Method Summary
Modifier and TypeMethodDescriptionvoid
dispose()
Allows a Layer to clean up any listeners, or internal caches or resources it has added during use.The bounds of the Layer content (if known).Parameter values used when reading.Reader used for efficient access to raster content.Supply a FeatureCollection indicating where the raster is located, we ask that the features use the same coordinate reference system as your raster data and form an outline or foot print of the information you have available.Methods inherited from class RasterLayer
getFeatureSource
Methods inherited from class StyleLayer
getStyle, setStyle
Methods inherited from class Layer
addMapLayerListener, connectDataListener, finalize, fireMapLayerListenerLayerChanged, fireMapLayerListenerLayerDeselected, fireMapLayerListenerLayerHidden, fireMapLayerListenerLayerPreDispose, fireMapLayerListenerLayerSelected, fireMapLayerListenerLayerShown, getQuery, getTitle, getUserData, isSelected, isVisible, preDispose, removeMapLayerListener, setSelected, setTitle, setVisible, toString
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Field Details
-
reader
Grid coverage reader allowing direct access to raster content. -
params
Optional parameters to control the rendering process.
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Constructor Details
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GridReaderLayer
Create a lyaer to draw the provided grid coverage reader.- Parameters:
reader
- a reader with the new layer that will be added
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GridReaderLayer
Create a layer to draw the provided grid coverage reader.- Parameters:
reader
- a reader with the new layer that will be added.
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GridReaderLayer
Create a layer with optional parameters to control the rendering process.- Parameters:
reader
- a reader with the new layer that will be added.
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GridReaderLayer
public GridReaderLayer(GridCoverage2DReader reader, Style style, String title, GeneralParameterValue[] params) Create layer title and optional parameters used to control the rendering process.- Parameters:
reader
- a reader with the new layer that will be added.params
- GeneralParameterValue[] that describe how theAbstractGridCoverage2DReader
shall read the images
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Method Details
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dispose
public void dispose()Description copied from class:Layer
Allows a Layer to clean up any listeners, or internal caches or resources it has added during use.- Overrides:
dispose
in classRasterLayer
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getBounds
Description copied from class:Layer
The bounds of the Layer content (if known). The bounds can be used to determine if any of the layers content is "on screen" when rendering the map; however often it is expensive to calculate a layers bounds up front so we are allowing this value to be optional.The returned bounds are a ReferencedEnvelope using the same CoordinateReferenceSystem as the layers contents.
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getReader
Reader used for efficient access to raster content. -
getParams
Parameter values used when reading.- Returns:
- parameters used when reader
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toFeatureCollection
Description copied from class:RasterLayer
Supply a FeatureCollection indicating where the raster is located, we ask that the features use the same coordinate reference system as your raster data and form an outline or foot print of the information you have available.This is an interesting method for a RasterLayer to have; some of the rendering systems are willing to render your raster content as an outline; for this to work they need this method to supply a feature collection indicating where the content is located. The information may also be used to determine if any of your raster content is on screen (and thus needs to be rendered).
Note this is a feature collection to allow for raster content that contains more than one image; and is not based bounding boxes (as sometimes rasters are rotated or stretched into position).
You may find the
FeatureUtilities
useful in wrapping up your raster content.- Specified by:
toFeatureCollection
in classRasterLayer
- Returns:
- SimpleFeatureCollection indicating the location of raster content
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