##' QGIS Algorithm provided by GRASS r.out.pov (grass:r.out.pov). Converts a raster map layer into a height-field file for POV-Ray
##'
##' @title QGIS algorithm - r.out.pov
##'
##' @param input `raster` - Input raster. Path to a raster layer.
##' @param hftype `number` - Height-field type (0=actual heights 1=normalized). A numeric value. field:FIELD_NAME to use a data defined value taken from the FIELD_NAME field. expression:SOME EXPRESSION to use a data defined value calculated using a custom QGIS expression.
##' @param bias `number` - Elevation bias. A numeric value. field:FIELD_NAME to use a data defined value taken from the FIELD_NAME field. expression:SOME EXPRESSION to use a data defined value calculated using a custom QGIS expression.
##' @param scale `number` - Vertical scaling factor. A numeric value. field:FIELD_NAME to use a data defined value taken from the FIELD_NAME field. expression:SOME EXPRESSION to use a data defined value calculated using a custom QGIS expression.
##' @param output `fileDestination` - Name of output povray file (TGA height field file). Path for new file.
##' @param GRASS_REGION_PARAMETER `extent` - GRASS GIS region extent. A comma delimited string of x min, x max, y min, y max. E.g. '4,10,101,105'. Path to a layer. The extent of the layer is used..
##' @param GRASS_REGION_CELLSIZE_PARAMETER `number` - GRASS GIS region cellsize (leave 0 for default). A numeric value. field:FIELD_NAME to use a data defined value taken from the FIELD_NAME field. expression:SOME EXPRESSION to use a data defined value calculated using a custom QGIS expression.
##' @param ... further parameters passed to `qgisprocess::qgis_run_algorithm()`
##' @param .complete_output logical specifying if complete out of `qgisprocess::qgis_run_algorithm()` should be used (`TRUE`) or first output (most likely the main) should read (`FALSE`). Default value is `TRUE`.
##' @param .quiet logical specifying if parameter `.quiet` for `qgisprocess::qgis_run_algorithm()` Default value is `TRUE`.
##' @param .messages logical specifying if messages from `qgisprocess::qgis_run_algorithm()` should be printed (`TRUE`) or not (`FALSE`). Default value is `FALSE`.
##'
##' @details
##' ## Outputs description
##' * output - outputFile - Name of output povray file (TGA height field file)
##'
##'
##' @export
##' @md
##' @importFrom qgisprocess qgis_run_algorithm
grass_r_out_pov <- function(input = qgisprocess:::qgis_default_value(), hftype = qgisprocess:::qgis_default_value(), bias = qgisprocess:::qgis_default_value(), scale = qgisprocess:::qgis_default_value(), output = qgisprocess:::qgis_default_value(), GRASS_REGION_PARAMETER = qgisprocess:::qgis_default_value(), GRASS_REGION_CELLSIZE_PARAMETER = qgisprocess:::qgis_default_value(),..., .complete_output = .complete_output_option(), .quiet = .quiet_option(), .messages = .message_option()) {
check_algorithm_necessities("grass:r.out.pov")
if (.messages){
output <- qgisprocess::qgis_run_algorithm("grass:r.out.pov", `input` = input, `hftype` = hftype, `bias` = bias, `scale` = scale, `output` = output, `GRASS_REGION_PARAMETER` = GRASS_REGION_PARAMETER, `GRASS_REGION_CELLSIZE_PARAMETER` = GRASS_REGION_CELLSIZE_PARAMETER,..., .quiet = .quiet)
} else {
suppressMessages(
output <- qgisprocess::qgis_run_algorithm("grass:r.out.pov", `input` = input, `hftype` = hftype, `bias` = bias, `scale` = scale, `output` = output, `GRASS_REGION_PARAMETER` = GRASS_REGION_PARAMETER, `GRASS_REGION_CELLSIZE_PARAMETER` = GRASS_REGION_CELLSIZE_PARAMETER,..., .quiet = .quiet)
)
}
if (.complete_output) {
return(output)
}
else{
qgisprocess::qgis_extract_output(output, "output")
}
}
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