.clang-format

+---
+Language:        Cpp
+BasedOnStyle:  Mozilla
+AccessModifierOffset: -2
+AlignAfterOpenBracket: Align
+AlignConsecutiveAssignments: false
+AlignConsecutiveDeclarations: true
+AlignEscapedNewlinesLeft: true
+AlignOperands:   true
+AlignTrailingComments: true
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: Inline
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterReturnType: All
+AlwaysBreakBeforeMultilineStrings: true
+AlwaysBreakTemplateDeclarations: true
+BinPackArguments: false
+BinPackParameters: true
+BraceWrapping:
+  AfterClass:      true
+  AfterControlStatement: true
+  AfterEnum:       true
+  AfterFunction:   true
+  AfterNamespace:  true
+  AfterObjCDeclaration: true
+  AfterStruct:     true
+  AfterUnion:      true
+  BeforeCatch:     true
+  BeforeElse:      true
+  IndentBraces:    true
+BreakBeforeBinaryOperators: None
+BreakBeforeBraces: GNU
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializersBeforeComma: true
+BreakAfterJavaFieldAnnotations: false
+BreakStringLiterals: true
+ColumnLimit:     200
+# ColumnLimit:     80
+CommentPragmas:  '^ IWYU pragma:'
+ConstructorInitializerAllOnOneLineOrOnePerLine: false
+ConstructorInitializerIndentWidth: 2
+ContinuationIndentWidth: 2
+Cpp11BracedListStyle: false
+DerivePointerAlignment: false
+DisableFormat:   false
+ExperimentalAutoDetectBinPacking: false
+ForEachMacros:   [ foreach, Q_FOREACH, BOOST_FOREACH ]
+IncludeCategories:
+  - Regex:           '^"(llvm|llvm-c|clang|clang-c)/'
+    Priority:        2
+  - Regex:           '^(<|"(gtest|isl|json)/)'
+    Priority:        3
+  - Regex:           '.*'
+    Priority:        1
+IncludeIsMainRegex: '$'
+IndentCaseLabels: true
+IndentWidth:     2
+IndentWrappedFunctionNames: false
+JavaScriptQuotes: Leave
+JavaScriptWrapImports: true
+KeepEmptyLinesAtTheStartOfBlocks: false
+MacroBlockBegin: ''
+MacroBlockEnd:   ''
+MaxEmptyLinesToKeep: 2
+NamespaceIndentation: None
+ObjCBlockIndentWidth: 2
+ObjCSpaceAfterProperty: true
+ObjCSpaceBeforeProtocolList: false
+PenaltyBreakBeforeFirstCallParameter: 19
+PenaltyBreakComment: 300
+PenaltyBreakFirstLessLess: 120
+PenaltyBreakString: 1000
+PenaltyExcessCharacter: 1000000
+PenaltyReturnTypeOnItsOwnLine: 0
+PointerAlignment: Left
+ReflowComments:  true
+SortIncludes:    true
+SpaceAfterCStyleCast: false
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeParens: ControlStatements
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 1
+SpacesInAngles:  true
+SpacesInCStyleCastParentheses: false
+SpacesInContainerLiterals: true
+SpacesInParentheses: true
+SpacesInSquareBrackets: false
+Standard:        Cpp03
+TabWidth:        2
+UseTab:          Never
+...

.editorconfig

+# http://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Apply to all code files
+[*]
+# A newline ending every file
+insert_final_newline = true
+
+# Set default charset
+charset = utf-8
+
+# 4 space indentation
+indent_style = space
+indent_size = 2
+
+# Various options
+trim_trailing_whitespace = true

.gitlab/merge_request_templates/request_for_changes.md

-### Summary
+#### Summary
 
 Gives a short summary of the changes.
 
-### Rationale
+#### Rationale
 
 Explain the rationale for the changes (possible link to a Request For Comments or to an issue).
 
-### Implementation Details
-
-#### Classes and files
+#### Implementation Details
 
+<!---
+##### Classes and files
 Give an overview of the implementation: main changes made to classes, files and modules. Do not paste complete diff, as it is available in the merge request already.
+-->
 
-#### Applications
-
+<!--- 
+##### Applications
 Describe any changes made to existing applications, or new applications that have been added.
+-->
 
-#### Tests
-
+<!---
+##### Tests
 Describe the testing strategy for new features.
+-->
 
-### Documentation
-
+<!---
+##### Documentation
 List or link documentation modifications that were made (doxygen, example, Software Guide, application documentation, CookBook).
+-->
+
+#### Additional notes
 
-### Additional notes
+<!--- List remaining open issues if any, and additional notes. -->
 
-List remaining open issues if any, and additional notes.
+#### Copyright
 
-### Copyright
+The copyright owner is *COPYRIGHT OWNER (OR OWNER'S AGENT)* and has signed the ORFEO ToolBox Contributor License Agreement.
 
-The copyright owner is *COPYRIGHT OWNER (OR OWNER'S AGENT)* and has signed the ORFEO ToolBox Contributor License Agreement
+<hr>
+***Check before merging:***
+- All discussions are resolved
+- At least 2 :thumbsup: votes from core developers, no :thumbsdown: vote.
+- The feature branch is (reasonably) up-to-date with the base branch
+- Dashboard is green
+- Copyright owner has signed the ORFEO ToolBox Contributor License Agreement
\ No newline at end of file

Documentation/Cookbook/rst/AdvancedUse.rst

@@ -11,11 +11,29 @@ that they only affect default values, and that settings in extended
 filenames, applications, monteverdi or custom C++ code might override
 those values.
 
-* ``OTB_DEM_DIRECTORY``: Default directory were DEM tiles are stored. It should only contain ```.hgt`` or or georeferenced ``.tif`` files. Empty if not set (no directory set)
-* ``OTB_GEOID_FILE``: Default path to the geoid file that will be used to retrieve height of DEM above ellipsoid. Empty if not set (no geoid set)
-* ``OTB_MAX_RAM_HINT``: Default maximum memory that OTB should use for processing, in MB. If not set, default value is 128 MB.
-* ``OTB_LOGGER_LEVEL``: Default level of logging for OTB. Should be one of  ``DEBUG``, ``INFO``, ``WARNING``, ``CRITICAL`` or ``FATAL``, by increasing order of priority. Only messages with a higher priority than the level of logging will be displayed. If not set, default level is ``INFO``.
-
+* ``OTB_DEM_DIRECTORY``: Default directory were DEM tiles are
+  stored. It should only contain ```.hgt`` or or georeferenced
+  ``.tif`` files. Empty if not set (no directory set)
+* ``OTB_GEOID_FILE``: Default path to the geoid file that will be used
+  to retrieve height of DEM above ellipsoid. Empty if not set (no
+  geoid set)
+* ``OTB_MAX_RAM_HINT``: Default maximum memory that OTB should use for
+  processing, in MB. If not set, default value is 128 MB.
+* ``OTB_LOGGER_LEVEL``: Default level of logging for OTB. Should be
+  one of ``DEBUG``, ``INFO``, ``WARNING``, ``CRITICAL`` or ``FATAL``,
+  by increasing order of priority. Only messages with a higher
+  priority than the level of logging will be displayed. If not set,
+  default level is ``INFO``.
+
+In addition to OTB specific environment variables, the following
+environment variable are parsed by third party libraries and also
+affect how OTB works:
+
+* ``GDAL_CACHEMAX``: Gdal has an internal cache mechanism to avoid reading or decoding again image chunks. This environnement variable controls how much memory Gdal can use for caching. By default, Gdal can use up to 5 percents of available RAM on system, which may be a lot. Moreover, caching is only needed if the processing chain is likely to request the same chunk several times, which is not likely  to happen for a standard pixel based OTB pipeline. Setting a lower value allows to allocate more memory to OTB itself (using applications ``-ram`` parameter or ``OTB_MAX_RAM_HINT`` environment variable). If value is small (less than 100 000, it is assumed to be in megabytes, otherwise, it is assumed to be in bytes.
+* ``GDAL_NUM_THREADS``: Gdal can take advantage of multi-threading to decode some formats. This variable controls the number of threads Gdal is allowed to use.
+* ``OPJ_NUM_THREADS``: OpenJpeg can take advantage of mutli-threading when decoding images. This variable controls the number of threads OpenJpeg is allowed to use.
+* ``ITK_GLOBAL_DEFAULT_NUMBER_OF_THREADS``: This variable allows to control the number of threads used by ITK for processing. 
+  
 .. _extended-filenames:
 
 Extended filenames

Examples/Application/ApplicationExample.cxx

@@ -97,7 +97,7 @@ private:
   //  \code{DoInit()} method contains class information and description, parameter set up, and example values.
   //  Software Guide : EndLatex
 
-  void DoInit() ITK_OVERRIDE
+  void DoInit() override
   {
 
     // Software Guide : BeginLatex

Examples/ChangeDetection/ChangeDetectionFrameworkExample.cxx

@@ -141,7 +141,7 @@ public:
 
 protected:
   MyChangeDetectorImageFilter() {}
-  ~MyChangeDetectorImageFilter() ITK_OVERRIDE {}
+  ~MyChangeDetectorImageFilter() override {}
 
 private:
   MyChangeDetectorImageFilter(const Self &); //purposely not implemented

Examples/Filtering/CompositeFilterExample.cxx

@@ -96,7 +96,7 @@ public:
   itkTypeMacro(CompositeExampleImageFilter, itk::ImageToImageFilter);
 
   /** Display */
-  void PrintSelf(std::ostream& os, itk::Indent indent) const ITK_OVERRIDE;
+  void PrintSelf(std::ostream& os, itk::Indent indent) const override;
 
 //  Software Guide : BeginLatex
 //
@@ -135,7 +135,7 @@ protected:
   RescalerType;
 //  Software Guide : EndCodeSnippet
 
-  void GenerateData() ITK_OVERRIDE;
+  void GenerateData() override;
 
 private:
 

Examples/Filtering/GeometriesChangeSpatialReference.cxx

@@ -65,7 +65,7 @@ private:
 otb::ogr::UniqueGeometryPtr
 ReprojectTransformationFunctor::operator()(OGRGeometry const* in) const
 {
-  otb::ogr::UniqueGeometryPtr out(in ? in->clone() : ITK_NULLPTR);
+  otb::ogr::UniqueGeometryPtr out(in ? in->clone() : nullptr);
   if (out)
     {
     const OGRErr err = out->transform(m_reprojector.get());
@@ -102,11 +102,11 @@ protected:
   /** Default constructor. */
   MyReprojectionFilter(){ }
   /** Destructor. */
-  ~MyReprojectionFilter() ITK_OVERRIDE{ }
+  ~MyReprojectionFilter() override{ }
 
 private:
 
-  OGRSpatialReference*     DoDefineNewLayerSpatialReference(otb::ogr::Layer const& itkNotUsed(source)) const ITK_OVERRIDE
+  OGRSpatialReference*     DoDefineNewLayerSpatialReference(otb::ogr::Layer const& itkNotUsed(source)) const override
     {
     return m_osr.get();
     }
@@ -207,7 +207,7 @@ int main (int argc, char **argv)
 
     otb::ogr::DataSource::Pointer output
       = options.workingInplace ? input
-      : options.outputIsStdout ? ITK_NULLPTR
+      : options.outputIsStdout ? nullptr
       : otb::ogr::DataSource::New( options.outputFile, otb::ogr::DataSource::Modes::Update_LayerCreateOnly);
     std::cout << "input: " << otb::ogr::version_proxy::GetFileListAsStringVector(&input->ogr())[0] << " should be: " << options.inputFile << "\n";
     if (output)
@@ -234,7 +234,7 @@ int main (int argc, char **argv)
       }
     else
       {
-      filter->UpdateOutputData(ITK_NULLPTR);
+      filter->UpdateOutputData(nullptr);
       assert(filter->GetOutput() && "output not set");
       filter->GetOutput()->Print(std::cout, 0);
       }

Examples/Filtering/GeometriesFilter.cxx

@@ -35,7 +35,7 @@ struct SwapXYFunctor
   typedef OGRGeometry TransformedElementType;
   otb::ogr::UniqueGeometryPtr operator()(OGRGeometry const* in) const
     {
-    otb::ogr::UniqueGeometryPtr out(in ? in->clone() : ITK_NULLPTR);
+    otb::ogr::UniqueGeometryPtr out(in ? in->clone() : nullptr);
     if (out)
       {
 #if GDAL_VERSION_NUM >= 1900
@@ -74,7 +74,7 @@ int main (int argc, char **argv)
 
     otb::ogr::DataSource::Pointer output
       = workingInplace ? input
-      : outputIsStdout ? ITK_NULLPTR
+      : outputIsStdout ? nullptr
       :                  otb::ogr::DataSource::New( outputFile, otb::ogr::DataSource::Modes::Update_LayerCreateOnly);
     std::cout << "input: " << otb::ogr::version_proxy::GetFileListAsStringVector(&input->ogr())[0] << " should be: " << inputFile << "\n";
     if (output)
@@ -97,7 +97,7 @@ int main (int argc, char **argv)
       }
     else
       {
-      filter->UpdateOutputData(ITK_NULLPTR);
+      filter->UpdateOutputData(nullptr);
       assert(filter->GetOutput() && "output not set");
       filter->GetOutput()->Print(std::cout, 0);
       }

Examples/IO/OGRWrappersExample.cxx

@@ -109,7 +109,7 @@ int main(int argc, char * argv[])
     otb::ogr::DataSource::Pointer destination = otb::ogr::DataSource::New(
       argv[2], otb::ogr::DataSource::Modes::Update_LayerCreateOnly);
     otb::ogr::Layer destLayer = destination->CreateLayer(
-      argv[2], ITK_NULLPTR, wkbMultiPolygon);
+      argv[2], nullptr, wkbMultiPolygon);
 // Software Guide : EndCodeSnippet
 
 // Software Guide : BeginLatex

Examples/Learning/SEMModelEstimatorExample.cxx

@@ -102,7 +102,7 @@ int main(int argc, char * argv[])
 //  Software Guide : EndCodeSnippet
 
     char * fileNameIn = argv[1];
-    char * fileNameImgInit = ITK_NULLPTR;
+    char * fileNameImgInit = nullptr;
     char * fileNameOut = argv[2];
     int    numberOfClasses = atoi(argv[3]);
     int    numberOfIteration = atoi(argv[4]);
@@ -148,7 +148,7 @@ int main(int argc, char * argv[])
 //  Software Guide : EndLatex
 
 //  Software Guide : BeginCodeSnippet
-    if (fileNameImgInit != ITK_NULLPTR)
+    if (fileNameImgInit != nullptr)
       {
       typedef otb::ImageFileReader<OutputImageType> ImgInitReaderType;
       ImgInitReaderType::Pointer segReader = ImgInitReaderType::New();

Examples/Learning/SOMExample.cxx

@@ -408,7 +408,7 @@ int main(int itkNotUsed(argc), char* argv[])
 //  Software Guide : EndLatex
 
 // Software Guide : BeginCodeSnippet
-  if (actMapFileName != ITK_NULLPTR)
+  if (actMapFileName != nullptr)
     {
     ActivationWriterType::Pointer actWriter = ActivationWriterType::New();
     actWriter->SetFileName(actMapFileName);