LCOV - code coverage report
Current view: top level - apps - gdalalg_raster_aspect.cpp (source / functions) Hit Total Coverage
Test: gdal_filtered.info Lines: 38 38 100.0 %
Date: 2025-06-19 12:30:01 Functions: 2 2 100.0 %

          Line data    Source code
       1             : /******************************************************************************
       2             :  *
       3             :  * Project:  GDAL
       4             :  * Purpose:  "aspect" step of "raster pipeline"
       5             :  * Author:   Even Rouault <even dot rouault at spatialys.com>
       6             :  *
       7             :  ******************************************************************************
       8             :  * Copyright (c) 2025, Even Rouault <even dot rouault at spatialys.com>
       9             :  *
      10             :  * SPDX-License-Identifier: MIT
      11             :  ****************************************************************************/
      12             : 
      13             : #include "gdalalg_raster_aspect.h"
      14             : 
      15             : #include "gdal_priv.h"
      16             : #include "gdal_utils.h"
      17             : 
      18             : #include <cmath>
      19             : 
      20             : //! @cond Doxygen_Suppress
      21             : 
      22             : #ifndef _
      23             : #define _(x) (x)
      24             : #endif
      25             : 
      26             : /************************************************************************/
      27             : /*         GDALRasterAspectAlgorithm::GDALRasterAspectAlgorithm()       */
      28             : /************************************************************************/
      29             : 
      30          37 : GDALRasterAspectAlgorithm::GDALRasterAspectAlgorithm(bool standaloneStep)
      31             :     : GDALRasterPipelineStepAlgorithm(NAME, DESCRIPTION, HELP_URL,
      32          37 :                                       standaloneStep)
      33             : {
      34          37 :     SetOutputVRTCompatible(false);
      35             : 
      36          37 :     AddBandArg(&m_band).SetDefault(m_band);
      37          74 :     AddArg("convention", 0, _("Convention for output angles"), &m_convention)
      38          37 :         .SetChoices("azimuth", "trigonometric-angle")
      39          37 :         .SetDefault(m_convention);
      40             :     AddArg("gradient-alg", 0, _("Algorithm used to compute terrain gradient"),
      41          74 :            &m_gradientAlg)
      42          37 :         .SetChoices("Horn", "ZevenbergenThorne")
      43          37 :         .SetDefault(m_gradientAlg);
      44             :     AddArg("zero-for-flat", 0, _("Whether to output zero for flat areas"),
      45          37 :            &m_zeroForFlat);
      46             :     AddArg("no-edges", 0,
      47             :            _("Do not try to interpolate values at dataset edges or close to "
      48             :              "nodata values"),
      49          37 :            &m_noEdges);
      50          37 : }
      51             : 
      52             : /************************************************************************/
      53             : /*                GDALRasterAspectAlgorithm::RunStep()                  */
      54             : /************************************************************************/
      55             : 
      56          10 : bool GDALRasterAspectAlgorithm::RunStep(GDALPipelineStepRunContext &)
      57             : {
      58          10 :     const auto poSrcDS = m_inputDataset[0].GetDatasetRef();
      59          10 :     CPLAssert(poSrcDS);
      60          10 :     CPLAssert(m_outputDataset.GetName().empty());
      61          10 :     CPLAssert(!m_outputDataset.GetDatasetRef());
      62             : 
      63          20 :     CPLStringList aosOptions;
      64          10 :     aosOptions.AddString("-of");
      65          10 :     aosOptions.AddString("stream");
      66          10 :     aosOptions.AddString("-b");
      67          10 :     aosOptions.AddString(CPLSPrintf("%d", m_band));
      68          10 :     if (m_convention == "trigonometric-angle")
      69           1 :         aosOptions.AddString("-trigonometric");
      70          10 :     aosOptions.AddString("-alg");
      71          10 :     aosOptions.AddString(m_gradientAlg.c_str());
      72          10 :     if (m_zeroForFlat)
      73           1 :         aosOptions.AddString("-zero_for_flat");
      74          10 :     if (!m_noEdges)
      75           8 :         aosOptions.AddString("-compute_edges");
      76             : 
      77             :     GDALDEMProcessingOptions *psOptions =
      78          10 :         GDALDEMProcessingOptionsNew(aosOptions.List(), nullptr);
      79             : 
      80             :     auto poOutDS = std::unique_ptr<GDALDataset>(GDALDataset::FromHandle(
      81             :         GDALDEMProcessing("", GDALDataset::ToHandle(poSrcDS), "aspect", nullptr,
      82          10 :                           psOptions, nullptr)));
      83          10 :     GDALDEMProcessingOptionsFree(psOptions);
      84          10 :     const bool bRet = poOutDS != nullptr;
      85          10 :     if (poOutDS)
      86             :     {
      87          10 :         m_outputDataset.Set(std::move(poOutDS));
      88             :     }
      89             : 
      90          20 :     return bRet;
      91             : }
      92             : 
      93             : GDALRasterAspectAlgorithmStandalone::~GDALRasterAspectAlgorithmStandalone() =
      94             :     default;
      95             : 
      96             : //! @endcond

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