gdalalg_raster_tpi.h

/******************************************************************************
 *
 * Project:  GDAL
 * Purpose:  "tpi" step of "raster pipeline"
 * Author:   Even Rouault <even dot rouault at spatialys.com>
 *
 ******************************************************************************
 * Copyright (c) 2025, Even Rouault <even dot rouault at spatialys.com>
 *
 * SPDX-License-Identifier: MIT
 ****************************************************************************/
 
#ifndef GDALALG_RASTER_TPI_INCLUDED
#define GDALALG_RASTER_TPI_INCLUDED
 
#include "gdalalg_raster_pipeline.h"
 
#include <limits>

 
/************************************************************************/
/*                         GDALRasterTPIAlgorithm                       */
/************************************************************************/
 
class GDALRasterTPIAlgorithm /* non final */
    : public GDALRasterPipelineStepAlgorithm
{
  public:
    static constexpr const char *NAME = "tpi";
    static constexpr const char *DESCRIPTION =
        "Generate a Topographic Position Index (TPI) map";
    static constexpr const char *HELP_URL = "/programs/gdal_raster_tpi.html";
 
    explicit GDALRasterTPIAlgorithm(bool standaloneStep = false);
 
  private:
    bool RunStep(GDALPipelineStepRunContext &ctxt) override;
 
    int m_band = 1;
    bool m_noEdges = false;
};
 
/************************************************************************/
/*                    GDALRasterTPIAlgorithmStandalone                  */
/************************************************************************/
 
class GDALRasterTPIAlgorithmStandalone final : public GDALRasterTPIAlgorithm
{
  public:
    GDALRasterTPIAlgorithmStandalone()
        : GDALRasterTPIAlgorithm(/* standaloneStep = */ true)
    {
    }
 
    ~GDALRasterTPIAlgorithmStandalone() override;
};

 
#endif /* GDALALG_RASTER_TPI_INCLUDED */