Package org.geotools.process
Interface RenderingProcess
- All Superinterfaces:
Process
An interface to be implemented by processes meant to be integrated as feature collection/grid coverage
transformations in a rendering chain.
The method provide information about how the data is altered so that the renderer can query the appropriate part of the input data that will feed the process
- Author:
- Andrea Aime - GeoSolutions
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Method Summary
Modifier and TypeMethodDescriptiondefault boolean
clipOnRenderingArea
(Map<String, Object> input) Returns true if the code should be given a raster input that is clipped to the rendering area, false if the input can also contain data outside the rendering area (e.g., for interpolation).default GeneralParameterValue[]
customizeReadParams
(Map<String, Object> input, GridCoverageReader reader, GeneralParameterValue[] params) Allows the transformation to customize the read parameters (aslinvertGridGeometry
(Map<String, Object> input, Query targetQuery, GridGeometry targetGridGeometry) Given a target query and a target grid geometry returns the grid geometry to be used to read the input data of the process involved in rendering.invertQuery
(Map<String, Object> input, Query targetQuery, GridGeometry gridGeometry) Given a target query and a target grid geometry returns the query to be used to read the input data of the process involved in rendering.
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Method Details
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invertQuery
Query invertQuery(Map<String, Object> input, Query targetQuery, GridGeometry gridGeometry) throws ProcessExceptionGiven a target query and a target grid geometry returns the query to be used to read the input data of the process involved in rendering. This method will be called only if the input data is a feature collection.- Parameters:
input
- The process inputstargetQuery
- The query against the transformation outputsgridGeometry
- The grid geometry desired for the outputs of the transformation- Returns:
- The transformed query, or null if no inversion is possible/meaningful
- Throws:
ProcessException
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invertGridGeometry
GridGeometry invertGridGeometry(Map<String, Object> input, Query targetQuery, GridGeometry targetGridGeometry) throws ProcessExceptionGiven a target query and a target grid geometry returns the grid geometry to be used to read the input data of the process involved in rendering. This method will be called only if the input data is a grid coverage or a grid coverage reader- Parameters:
input
- The process inputstargetQuery
- The query against the transformation outputstargetGridGeometry
- The grid geometry desired for the outputs of the transformation- Returns:
- The transformed query, or null if no inversion is possible/meaningful
- Throws:
ProcessException
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customizeReadParams
default GeneralParameterValue[] customizeReadParams(Map<String, Object> input, GridCoverageReader reader, GeneralParameterValue[] params) Allows the transformation to customize the read parameters (asl- Parameters:
input
- The process inputsreader
- The reader involvedparams
- The current parameters- Returns:
- The original parameters, or a customized version of them
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clipOnRenderingArea
Returns true if the code should be given a raster input that is clipped to the rendering area, false if the input can also contain data outside the rendering area (e.g., for interpolation). Applies only to transformations taking a raster input. Default implementation returns false- Parameters:
input
- The process input parameters- Returns:
- True if the input should be clipped to the rendering area, false otherwise
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