RenderingTransformation (Geotools modules 32-SNAPSHOT API)

All Superinterfaces:

Expression, Function

All Known Subinterfaces:

CoverageReadingTransformation

All Known Implementing Classes:

FootprintsTransformation
```
public interface RenderingTransformation
extends Function
```
An interface to be implemented by processes or by filter functions meant to be integrated as feature collection/grid coverage transformations in a rendering chain.
These functions are meant to take one layer (raster or vector) and apply transformations on top of it
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/function

Author:

Andrea Aime - GeoSolutions

Field Summary
- Fields inherited from interface Expression
  NIL

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default GeneralParameterValue[]`	`customizeReadParams(GridCoverageReader reader, GeneralParameterValue... params)`	Allows the transformation to customize the read
`GridGeometry`	`invertGridGeometry(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 function involved in rendering.
`Query`	`invertQuery(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 function This method will be called only if the input data is a feature collection.

Methods inherited from interface Expression
accept, evaluate, evaluate

Methods inherited from interface Function
getFallbackValue, getFunctionName, getName, getParameters

- Method Detail
  - invertQuery
```
Query invertQuery(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 function This method will be called only if the input data is a feature collection.
    
    Returns:
    
    The transformed query, or null if no inversion is possible/meaningful
  - invertGridGeometry
```
GridGeometry invertGridGeometry(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 function involved in rendering. This method will be called only if the input data is a grid coverage or a grid coverage reader
    
    Returns:
    
    The transformed query, or null if no inversion is possible/meaningful
  - customizeReadParams
```
default GeneralParameterValue[] customizeReadParams(GridCoverageReader reader,
                                                    GeneralParameterValue... params)
```
    Allows the transformation to customize the read