ITK/Release 4/Wrapping: Difference between revisions

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'''Wrapping'''
'''Wrapping'''


= Requirements =
= High-Level Goals =


* Avoid unnecessary dependencies
SIMPLIFY ITK by allowing easy access of the toolkit from other languages, especially scripting languages, hiding some difficulties (templates, compilation ...) along the way.
* Wrap +80% of the toolkit
* Have ITK look similar to the native wrapped language


= Tools =
== Metrics and goals ==
 
* Avoid unnecessary dependencies (see Modular ITK)
* WrapITK. For installing WrapITK with ITK follow [[/ITK_Release_4/Wrapping/WrapITK_Installation|here]]
* FASTER
* Swig
** faster compilation
* CableSwig
** limited compilation ( see [[ ITK_Release_4/Modularization | modular itk v4 ]] )
* MUMMY
** faster re-compile (touching a given .h should not trigger a full re-compilation)
 
* Wrap 80%+ of the toolkit
= Languages =
* Have ITK behaves in the different languages as close to the native code as possible
 
** ITK Image to/from target language array conversion
What languages to wrap
** Target language inheritance (SWIG directors)
** Automatic type selection in Python
* Binary distribution
* Automatic Inline documentation


== Languages ==
* Java
* Python
* Python
* Lua ?
* Lua ?
* Tcl ?
* Tcl ?
* see simpleITK


= Parallel Build Status =
[[/Examples|Comparative Examples]]


* [[ITK_Release_4/Wrapping/Parallel_Build_Status|Parallel Build Status]]
= Required Tools and Technology =


= Discussions =
Installation is detailled [[/WrapITK_Installation|here]]


== Tcon July 19 2010 ==
== tools ==
* WrapITK.
* Swig
* GccXML


* Dropping CableSwig
== WrapITK Configuration and Build Process Internals ==
* Using Swig Directly
** Along with GCC_XML


* Two Levels of Wrapping
* [[/BuildProcess | Build Process for Dummies ]]
** Wrapping the Simplified Layer (many wrapping tools will do)
** Wrapping the Templated Layer (WrapITK,GCC_XML)


* Managing multiple component images
== Parallel Build Status ==
** Microscopy use cases
** Remote Sensing cases
** itkVectorImage ?
** need a "component-by-component" filter driver ?


* Make easy to add new types (e.g. another pixel type for the image...)
* [[ITK_Release_4/Wrapping/Parallel_Build_Status|Parallel Build Status]]
** Run time binding may help here (along with the internal finder)
 
* Make possible (easy?) to distribute binaries of the wrapping.
** Maybe use the package manager (Ryppl ?).
** The same goes for the C++ version.
 
* Remove (or deprecate) itkSetVectorMacro and itkGetVectorMacro
they make the generated methods unusable in the target languages, and are not used that much in ITK
 
[glehmann@gbook build]$ grep -r etVectorMacro ~/src/Insight/Code/*/*.h | wc -l
    34
 
They are used in two quite common filters - ChangeInformationImageFilter and PadImageFilter - and this makes this filter at least partly unusable in the target languages.
 
 
== Tcon 808310 ==
=== Agenda 081310 ===
 
* gccxml maintenance
 
who does it?
migration to CLang?
 
* migrating to WrapITK 0.3
* recode igenerator.py in C++
* languages support
** keep python 2
** keep java
** add C#
** add Python 3?
** remove Tcl?
* redefine the WrapITK libraries (grouping of classes)
 
It seems to be tightly linked to [[ITK_Release_4/Modularization]].
 
* Default wrapped types and abbreviated naming scheme
 
Some choices are already made for [[ITK_Release_4/SimpleITK | SimpleITK]]
 
* Wrapping coverage
 
100% filters coverage?
 
* Binary distribution
* ITK Image to/from target language array conversion
* Automatic Inline documentation
* Target language inheritance (SWIG directors)
* Automatic type selection in Python
* Improve 64bits support in ITK — surely done elsewhere already
* GDCM wrapping integration?
 
=== Minutes 081310 ===
 
==== Attendees ====
 
* Luis Ibañez
* Gabe Hart
* Gaëtan Lehmann
* Brad King
 
==== Topics ====
 
* gccxml maintenance
 
Brad working on it. Getting harder with newer compiler. Will probably possible for the next couple of years.
 
CLang must be explored as a replacement.
 
* migrating to WrapITK 0.3
* recode igenerator.py in C++
 
reuse cable code. already read gccxml output.
 
* languages support
** keep python 2
** keep java
** add C#
** add Python 3? maybe
** remove Tcl? sure
 
* redefine the WrapITK libraries (grouping of classes)
 
use the same module organization than in ITK
 
* Default wrapped types and abbreviated naming scheme
* Wrapping coverage
* Binary distribution
 
distribute binary for now next move to ryppl
 
* ITK Image to/from target language array conversion
* Automatic Inline documentation
* Target language inheritance (SWIG directors)
* Automatic type selection in Python
* Improve 64bits support in ITK — surely done elsewhere already
 
remove 64 bit pixel type


rework filter using unsigned long type
= Discussions and TConfs =


* GDCM wrapping integration?
* 19-07-2010 - NoAgenda                                      - [[/19072010_Minutes|Minutes]]
* 13-08-2010 - [[/13082010_Agenda|Agenda]] - [[/13082010_Minutes|Minutes]]


add interfaces in ITK classes and wrap those classes
== Pending Tasks ==
* [http://www.vtk.org/Wiki/ITK_Release_4/Wrapping/Tasks here]

Latest revision as of 16:00, 9 December 2011

Wrapping

High-Level Goals

SIMPLIFY ITK by allowing easy access of the toolkit from other languages, especially scripting languages, hiding some difficulties (templates, compilation ...) along the way.

Metrics and goals

  • Avoid unnecessary dependencies (see Modular ITK)
  • FASTER
    • faster compilation
    • limited compilation ( see modular itk v4 )
    • faster re-compile (touching a given .h should not trigger a full re-compilation)
  • Wrap 80%+ of the toolkit
  • Have ITK behaves in the different languages as close to the native code as possible
    • ITK Image to/from target language array conversion
    • Target language inheritance (SWIG directors)
    • Automatic type selection in Python
  • Binary distribution
  • Automatic Inline documentation

Languages

  • Java
  • Python
  • Lua ?
  • Tcl ?
  • see simpleITK

Comparative Examples

Required Tools and Technology

Installation is detailled here

tools

  • WrapITK.
  • Swig
  • GccXML

WrapITK Configuration and Build Process Internals

Parallel Build Status

Discussions and TConfs

Pending Tasks

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