Difference between revisions of "ESA Summer of Code in Space/Project Ideas"

 
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{|align="center" width="62%"
 
{|align="center" width="62%"
  |align="center" |[http://brlcad.org/w/index.php?title=Google_Summer_of_Code/Project_Ideas#BRL-CAD_Projects http://brlcad.org/images/logo/BRL-CAD_gear_logo_w_name_256.png]
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  |align="center" |[http://brlcad.org/w/index.php?title=Google_Summer_of_Code/Project_Ideas#BRL-CAD_Projects http://brlcad.org/images/logo/cutout_sticker_256.png]
 
  |colspan=2 align="center" |Under development for 30+ years, it's big, it's complicated, it's powerful.  BRL-CAD will consider just about any project that relates to computer graphics or existing infrastructure.
 
  |colspan=2 align="center" |Under development for 30+ years, it's big, it's complicated, it's powerful.  BRL-CAD will consider just about any project that relates to computer graphics or existing infrastructure.
 
  |}
 
  |}
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= BRL-CAD Projects =
 
= BRL-CAD Projects =
  
== Web Development ==
+
== High Priority Topics ==
 +
 
 +
{| bgcolor=#fff width=100%
 +
!
 +
!align=center|Languages
 +
!align=center|Difficulty
 +
|-
 +
|align=left width=62%|'''[[Convert MGED from Tk to Qt]]:'''  Transition BRL-CAD's graphical applications from the Tk toolkit to the Qt toolkit. 
 +
|align=center|C/C++/Tcl/Qt
 +
|align=center|MEDIUM
 +
|-
 +
|width=62%|'''[[Annotations]]:'''  Implement support for 2D annotations, labels that can be added to geometry.
 +
|align=center|C/C++
 +
|align=center|MEDIUM
 +
|}
 +
 
 +
 
 +
== Rendering & Scientific Analysis ==
  
 
{| bgcolor=#fff
 
{| bgcolor=#fff
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!align=center|Languages
 
!align=center|Languages
 
!align=center|Difficulty
 
!align=center|Difficulty
!align=center|Contacts
 
 
|-
 
|-
|width=62%|'''[[Benchmark Performance Database]]:'''  BRL-CAD's Benchmark has been used for two decades to compare performance  across configurations.  Build a database website.  
+
|width=62%|'''[[Shader Enhancements]]:'''  We have a functioning custom shader system in BRL-CAD, but there are now folks that specialize and there's lot of room for improvements.
|Depends (likely PHP or Python)
+
|align=center|C
 
|align=center|EASY
 
|align=center|EASY
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
 
 
|-
 
|-
|width=62%|'''[[Synchronize Wiki with Docbook]]:'''  We use Docbook for most of our user documentation but find editing a wiki page much easier to use.  Set up a system so the two are always in sync.
+
|width=62%|'''[[Material and Shader Objects]]:'''  This one is a biggie but easy.  Implement new object entities for describing shaders and material properties, use them during ray tracing.
|Depends (likely PHP or Python)
+
|align=center|C
 +
|align=center|EASY
 +
|-
 +
|width=62%|'''[[GUI Integration of Analysis Tools]]:''' There are a ''lot'' of visualization tools in BRL-CAD, but most aren't integrated with the GUI.  Visualizing directly within the GUI would improve usability.
 +
|align=center|C
 
|align=center|MEDIUM
 
|align=center|MEDIUM
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Yapp]]
 
 
|-
 
|-
|width=62%|'''[[Online Geometry Viewer Interface]]:'''  Continuation of existing work, improve our interface for viewing geometry onlineFocus on the front-end usability.
+
|width=62%|'''[[Generalized abstracted spacial partitioning capability]]:''' Need more be said? If you're familiar with BSPs, KD trees, and grid structures, then this one is for you.
|Depends (likely PHP or Python)
+
|align=center|C
 +
|align=center|HARD
 +
|-
 +
|width=62%|'''[[High Dynamic Range Support]]:''' We don't have displays supporting this yet, but that's never stopped us before.  Implement support for images with more than 8-bits per channel.
 +
|align=center|C and/or C++
 +
|align=center|EASY
 +
|-
 +
|width=62%|'''[[Analysis Library]]:'''  There are various tools in BRL-CAD for calculating weights, moments of inertia, and more.  They're stand-alone applications.  Turn them into a library.
 +
|align=center|C
 +
|align=center|HARD
 +
|-
 +
|width=62%|'''[[Celestial mechanics particle system]]:'''  Simulate solar systems and galaxies.
 +
|align=center|C/C++
 
|align=center|MEDIUM
 
|align=center|MEDIUM
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
 
 
|-
 
|-
|width=62%|'''[[Online Geometry Viewer Back-end]]:'''  Continuation of existing work, improve our interface for viewing geometry onlineFocus on the back-end infrastructure.
+
|width=62%|'''[[Non-vacuum gravity simulator]]:'''  Simulate falling to earth.
|Depends (likely PHP or Python)
+
|align=center|C/C++
 +
|align=center|MEDIUM
 +
|-
 +
|width=62%|'''[[Polarization]]:'''  We already do multispectral ray tracing, but don't simulate polarization effectsImplement ray splitting and filtering.
 +
|align=center|C
 
|align=center|HARD
 
|align=center|HARD
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
 
 
|-
 
|-
|width=62%|'''[[Mediawiki 3D Geometry Extension]]:'''  Write an extension for Mediawiki that will visualize our .g filesMaybe leverage LLVM C->Javascript translation.  
+
|width=62%|'''[[Density functions]]:'''  Accurately represent everything from atmosphere to boneImplement support for parametric density functions for homogenous materials.
|Depends (likely PHP or Python)
+
|align=center|C
 
|align=center|HARD
 
|align=center|HARD
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
+
|-
 +
|width=62%|'''[[Bending light]]:'''  Think gravity wells and satellite cameras.
 +
|align=center|C
 +
|align=center|MEDIUM
 +
|-
 +
|width=62%|'''[[Appleseed renderer integration]]:'''  Appleseed is rendering infrastructure used by the film industry to make pretty pictures.  Make it shoot rays at our native geometry with our ray trace library.
 +
|align=center|C
 +
|align=center|MEDIUM
 +
|}
 +
 
 +
 
 +
== Web Development ==
 +
 
 +
{| bgcolor=#fff
 +
!
 +
!align=center|Languages
 +
!align=center|Difficulty
 +
|-
 +
|width=62%|'''[[Benchmark Performance Database]]:'''  BRL-CAD's Benchmark has been used for two decades to compare performance  across configurations.  Build a database website.
 +
|Depends (likely PHP or Python)
 +
|align=center|EASY
 
|-
 
|-
 
|width=62%|'''[[Materials Database]]:'''  Create a Materials Database web site for collecting, managing, and providing programmatic interfaces to material properties.
 
|width=62%|'''[[Materials Database]]:'''  Create a Materials Database web site for collecting, managing, and providing programmatic interfaces to material properties.
 
|Depends (likely PHP or Python)
 
|Depends (likely PHP or Python)
 
|align=center|MEDIUM
 
|align=center|MEDIUM
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison, Yapp]]
 
 
|}
 
|}
 +
  
 
== Geometry ==
 
== Geometry ==
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!align=center|Languages
 
!align=center|Languages
 
!align=center|Difficulty
 
!align=center|Difficulty
!align=center|Contacts
 
 
|-
 
|-
 
|align=left width=62%|'''[[NURBS Editing Support]]:'''  BRL-CAD doesn't currently have support for editing NURBS primitives.  Fix that.
 
|align=left width=62%|'''[[NURBS Editing Support]]:'''  BRL-CAD doesn't currently have support for editing NURBS primitives.  Fix that.
 
|align=center|C/Tcl
 
|align=center|C/Tcl
 
|align=center|MEDIUM
 
|align=center|MEDIUM
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Yapp]]
 
 
|-
 
|-
 
|width=62%|'''[[Overlap tool]]:''' Resolving geometric interferences (aka overlaps) is a common geometry editing activity.  Design an awesome GUI for resolving conflicts.
 
|width=62%|'''[[Overlap tool]]:''' Resolving geometric interferences (aka overlaps) is a common geometry editing activity.  Design an awesome GUI for resolving conflicts.
 
|align=center|Tcl
 
|align=center|Tcl
 
|align=center|EASY
 
|align=center|EASY
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Yapp, Morrison, Greenwald]]
 
 
|-
 
|-
 
|align=left width=62%|'''[[Vector Drawings from NURBS]]:'''  Huge impact here if you can update one or more of our raytracers to provide vector output instead of raster.  Perhaps render directly to PDF or SVG.
 
|align=left width=62%|'''[[Vector Drawings from NURBS]]:'''  Huge impact here if you can update one or more of our raytracers to provide vector output instead of raster.  Perhaps render directly to PDF or SVG.
 
|align=center|C and/or C++
 
|align=center|C and/or C++
 
|align=center|EASY
 
|align=center|EASY
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Rossberg]]
 
|-
 
|width=62%|'''[[NMG Editing]]:'''  Our structured polygonal mesh geometry (N-Manifold Geometry = NMG) is a common export format, but our NMG edit support is non-existent.  We need something.
 
|align=center|C
 
|align=center|HARD
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison, Rossberg]]
 
|-
 
|width=62%|'''[[Visualizing Constructive Solid Geometry (CSG)]]:'''  CSG forms a directed acyclic graph.  Tree view widgets show a simple hierarchical representation, but we need something better.
 
|align=center|C/C++
 
|align=center|EASY
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
 
 
|-
 
|-
 
|align=left width=62%|'''[[Plate Mode NURBS raytracing]]:'''  Imported NURBS geometry often does NOT enclose space (i.e., not solid), so add support for specifying an implicit thickness.
 
|align=left width=62%|'''[[Plate Mode NURBS raytracing]]:'''  Imported NURBS geometry often does NOT enclose space (i.e., not solid), so add support for specifying an implicit thickness.
 
|align=center|C/C++
 
|align=center|C/C++
 
|align=center|HARD
 
|align=center|HARD
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
 
 
|-
 
|-
 
|width=62%|'''[[STEP exporter]]:'''  We have an importer, we need a comprehensive exporter with support for implicit CSG, NURBS, or polygonal mesh geometry.
 
|width=62%|'''[[STEP exporter]]:'''  We have an importer, we need a comprehensive exporter with support for implicit CSG, NURBS, or polygonal mesh geometry.
 
|align=center|C/C++
 
|align=center|C/C++
 
|align=center|EASY
 
|align=center|EASY
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Yapp, Morrison]]
 
 
|-
 
|-
 
|width=62%|'''[[STEP importer improvements]]:'''  We have an importer, but it's preliminary.  Add support for importing hierarchy information, polygonal geometry, and implicit geometry.
 
|width=62%|'''[[STEP importer improvements]]:'''  We have an importer, but it's preliminary.  Add support for importing hierarchy information, polygonal geometry, and implicit geometry.
 
|align=center|C/C++
 
|align=center|C/C++
 
|align=center|MEDIUM
 
|align=center|MEDIUM
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Yapp]]
 
 
|-  
 
|-  
 
|width=62%|'''[[STEP AP 242 Parser]]:'''  We already parse a subset of AP203, but the new kid on the block is AP242.  Make AP242 work with BRL-CAD's step-g importer.  
 
|width=62%|'''[[STEP AP 242 Parser]]:'''  We already parse a subset of AP203, but the new kid on the block is AP242.  Make AP242 work with BRL-CAD's step-g importer.  
 
|align=center|C++
 
|align=center|C++
 
|align=center|HARD
 
|align=center|HARD
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Mark, Charlie, Yapp]]
 
|-
 
|width=62%|'''[[Convert BoT to Pipe]]:'''  Command line interface to convert facetted fluid/electrical line geometry into BRL-CAD native pipe solids.
 
|align=center|C/C++/Tcl
 
|align=center|MEDIUM
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
 
 
|-
 
|-
 
|width=62%|'''[[IGES import improvements]]:'''  We have extensive support for the International Geometry Exchange Standard (IGES) with our g-iges and iges-g converters, but they need updating.
 
|width=62%|'''[[IGES import improvements]]:'''  We have extensive support for the International Geometry Exchange Standard (IGES) with our g-iges and iges-g converters, but they need updating.
 
|align=center|C
 
|align=center|C
 
|align=center|MEDIUM
 
|align=center|MEDIUM
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
 
 
|-
 
|-
 
|width=62%|'''[[Geometry Conversion Library]]:'''  Probably our biggest open source asset is our extensive collection of importers and exporters.  Turn them all into a universal conversion library.  
 
|width=62%|'''[[Geometry Conversion Library]]:'''  Probably our biggest open source asset is our extensive collection of importers and exporters.  Turn them all into a universal conversion library.  
 
|align=center|C/C++
 
|align=center|C/C++
 
|align=center|EASY
 
|align=center|EASY
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Greenwald, Morrison, Rossberg]]
 
 
|-
 
|-
 
|width=62%|'''[[Voxelize]] command:'''  Convert geometry into voxel data sets by shooting a grid of rays.  The finite element analysis and volumetric rendering folks will love you.
 
|width=62%|'''[[Voxelize]] command:'''  Convert geometry into voxel data sets by shooting a grid of rays.  The finite element analysis and volumetric rendering folks will love you.
 
|align=center|C
 
|align=center|C
 
|align=center|EASY
 
|align=center|EASY
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Greenwald, Morrison, Rossberg]]
 
 
|-
 
|-
 
|width=62%|'''[[COLLADA Importer]]:'''  Create an importer for the COLLADA file format.
 
|width=62%|'''[[COLLADA Importer]]:'''  Create an importer for the COLLADA file format.
 
|align=center|C/C++
 
|align=center|C/C++
 
|align=center|MEDIUM
 
|align=center|MEDIUM
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
 
 
|-
 
|-
 
|width=62%|'''[[X3D Importer]]:'''  Create an importer for the X3D file format.
 
|width=62%|'''[[X3D Importer]]:'''  Create an importer for the X3D file format.
 
|align=center|C/C++
 
|align=center|C/C++
 
|align=center|MEDIUM
 
|align=center|MEDIUM
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
 
 
|-
 
|-
 
|width=62%|'''[[OpenSCAD Importer]]:'''  Create an importer for OpenSCAD's format.
 
|width=62%|'''[[OpenSCAD Importer]]:'''  Create an importer for OpenSCAD's format.
 
|align=center|C/C++
 
|align=center|C/C++
 
|align=center|EASY
 
|align=center|EASY
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
 
 
|-
 
|-
 
|width=62%|'''[[OpenSCAD Exporter]]:'''  Create an exporter for OpenSCAD's format.
 
|width=62%|'''[[OpenSCAD Exporter]]:'''  Create an exporter for OpenSCAD's format.
 
|align=center|C/C++
 
|align=center|C/C++
 
|align=center|EASY
 
|align=center|EASY
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
 
|-
 
|width=62%|'''[[Python Geometry]]:'''  Wrap BRL-CAD's primitives in Python, make it easier to script geometry creation.
 
|align=center|Python
 
|align=center|Easy
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
 
|-
 
|width=62%|'''[[Perl Geometry]]:'''  Wrap BRL-CAD's primitives in Perl, make it easier to script geometry creation.
 
|align=center|Perl
 
|align=center|Easy
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Browder]]
 
 
|}
 
|}
 +
  
 
== Performance & Quality ==
 
== Performance & Quality ==
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!align=center|Languages
 
!align=center|Languages
 
!align=center|Difficulty
 
!align=center|Difficulty
!align=center|Contacts
 
 
|-
 
|-
 
|align=left width=62%|'''[[OpenCL GPGPU Raytracing]]:''' We have about two dozen primitives that need to have a ray-object intersection function converted from C to OpenCL.
 
|align=left width=62%|'''[[OpenCL GPGPU Raytracing]]:''' We have about two dozen primitives that need to have a ray-object intersection function converted from C to OpenCL.
 
|align=center|C/C++
 
|align=center|C/C++
 
|align=center|MEDIUM
 
|align=center|MEDIUM
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison, Rossberg]]
 
 
|-
 
|-
 
|align=left width=62%|'''[[Coherent Raytracing]]:''' Our current raytrace pipeline dispatches and processes one ray at a time.  Send bundles and convert the pipeline into phases.  
 
|align=left width=62%|'''[[Coherent Raytracing]]:''' Our current raytrace pipeline dispatches and processes one ray at a time.  Send bundles and convert the pipeline into phases.  
 
|align=center|C/C++
 
|align=center|C/C++
 
|align=center|MEDIUM
 
|align=center|MEDIUM
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison, Rossberg]]
 
 
|-
 
|-
 
|align=left width=62%|'''[[NURBS Booleans]]:'''  We have NURBS surface-surface intersections working.  Now we're using them to create evaluated forms of our CSG geometry.  Make it more robust and faster.
 
|align=left width=62%|'''[[NURBS Booleans]]:'''  We have NURBS surface-surface intersections working.  Now we're using them to create evaluated forms of our CSG geometry.  Make it more robust and faster.
 
|align=center|C/C++
 
|align=center|C/C++
 
|align=center|HARD
 
|align=center|HARD
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Yapp, Rossberg]]
 
 
|-
 
|-
 
|align=left width=62%|'''[[NURBS Optimization and Cleanup]]:'''  We have a fantastic implementation of NURBS evaluation but haven't gone back to clean up or speed it up.  Make it pretty and fast.
 
|align=left width=62%|'''[[NURBS Optimization and Cleanup]]:'''  We have a fantastic implementation of NURBS evaluation but haven't gone back to clean up or speed it up.  Make it pretty and fast.
 
|align=center|C/C++
 
|align=center|C/C++
 
|align=center|MEDIUM
 
|align=center|MEDIUM
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Yapp, Morrison]]
 
|-
 
|width=62%|'''[[Fix Bugs]]:'''  We take pride in our breadth of functionality and time-tested stability.  We still have bugs.  Identify some and fix them!
 
|align=center|C
 
|align=center|EASY
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Browder]]
 
|-
 
|width=62%|'''[[NMG Raytracing Performance Improvement]]:'''  BRL-CAD's structured mesh geometry (N-Manifold Geometry = NMG) needs some time in a profiler.  Malloc during raytracing is bad.
 
|align=center|C
 
|align=center|HARD
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison, Greenwald]]
 
|-
 
|width=62%|'''[[Mesh library cleanup]]:'''  BRL-CAD has an extensive n-manifold polygonal mesh library that needs some refactoring, testing, and optimization rework.
 
|align=center|C
 
|align=center|MEDIUM
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison, Rossberg]]
 
|-
 
|width=62%|'''[[Space Partitioning for Tessellation]]:'''  Technically an optimization task, make our geometry converters run an order of magnitude faster by using spatial partitioning during tessellation.
 
|align=center|C
 
|align=center|HARD
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Greenwald, Yapp, Morrison]]
 
|-
 
|width=62%|'''[[Code Reduction]]:'''  BRL-CAD is more than 1M lines of code.  Approximately 10% of that is duplication.  Help reduce that percentage.
 
|align=center|C
 
|align=center|EASY
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Greenwald, Morrison]]
 
|-
 
|width=62%|'''[[Header Restructuring]]:'''  BRL-CAD has about two dozen libraries with a single header declaring the entire public API.  Break up those monster headers into modular sub-headers.
 
|align=center|C
 
|align=center|EASY
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Greenwald, Morrison]]
 
 
|}
 
|}
 +
  
 
== Infrastructure ==
 
== Infrastructure ==
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!align=center|Languages
 
!align=center|Languages
 
!align=center|Difficulty
 
!align=center|Difficulty
!align=center|Contacts
 
|-
 
|width=62%|'''[[New Cross-Platform 3D Display Manager]]:'''  BRL-CAD uses '''''display managers''''' for visualizing 3D geometry in a window.  We want one that uses a cross-platform toolkit such as Qt + OGRE.
 
|align=center|C/C++
 
|align=center|MEDIUM
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
 
|-
 
|width=62%|'''[[New Cross-Platform 2D Framebuffer]]:'''  BRL-CAD uses '''''framebuffers''''' to display 2D imagery.  The merits of having a single interface for most platforms is self-evident.
 
|align=center|C/C++
 
|align=center|EASY
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison, Yapp]]
 
|-
 
|width=62%|'''[[Advanced Sketch Primitive Editor]]:'''  BRL-CAD has a 2D sketch primitive, but our handling of editing sketches doesn't incorporate parametric constraints.  There are potentially applicable codes in the open source community we can leverage for this, or we can roll our own solution.
 
|align=center|C/C++
 
|align=center|MEDIUM
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Yapp]]
 
 
|-
 
|-
 
|width=62%|'''[[Geometric Constraint Solver]]:'''  Our LIBPC parametric constraint library is the work-in-progress foundation of being able to validate and describe geometry relationships.
 
|width=62%|'''[[Geometric Constraint Solver]]:'''  Our LIBPC parametric constraint library is the work-in-progress foundation of being able to validate and describe geometry relationships.
 
|align=center|C/C++
 
|align=center|C/C++
 
|align=center|HARD
 
|align=center|HARD
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
 
|-
 
|width=62%|'''[[MGED to Archer Command Migration]]:'''  Our next-generation editor (Archer) needs to have the same (700+) commands that are in MGED.  Help make our next CAD interface awesome.
 
|align=center|C and Tcl
 
|align=center|EASY
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Yapp]]
 
|-
 
|width=62%|'''[[General Tree Walker]]:'''  We have a half dozen or more functions that will traverse a geometry hierarchy in different ways.  There only needs to be one.
 
|align=center|C
 
|align=center|EASY
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Greenwald, Yapp, Morrison]]
 
|-
 
|width=62%|'''[[Rework of libbu/libbn to not require Tcl]]:'''  Tcl's '''''C API''''' is used throughout BRL-CAD providing great abstractions, but we want our basic utility and numeric libraries (LIBBU & LIBBN) to stand alone.
 
|align=center|C
 
|align=center|EASY
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison, Yapp, Greenwald]]
 
 
|-
 
|-
 
|width=62%|'''[[Consolidate image processing]]:'''  We have 100+ image processing tools that independently read and write file data.  Needs much reuse love.
 
|width=62%|'''[[Consolidate image processing]]:'''  We have 100+ image processing tools that independently read and write file data.  Needs much reuse love.
 
|align=center|C
 
|align=center|C
 
|align=center|EASY
 
|align=center|EASY
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Greenwald]]
 
|-
 
|width=62%|'''[[GED Transactions]]:''' Migrating functionality from our MGED geometry editor into our LIBGED library provided excellent code reuse, but now we need transactions so that actions can be undone.
 
|align=center|C
 
|align=center|EASY
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
 
|-
 
|width=62%|'''[[Add exec option to search]]:'''  Our LIBGED library provides a ''search'' command very similar to the UNIX ''find'' command for scanning through geometry.  Implement the -exec option.
 
|align=center|C
 
|align=center|EASY
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Yapp]]
 
|-
 
|width=62%|'''[[Geometry Selection Functionality]]:'''  Implement a new selection command that lets you temporarily group objects based on spatial, attribute, or geometric properties.
 
|align=center|C
 
|align=center|EASY
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
 
 
|-
 
|-
 
|width=62%|'''[[Astronomical units]]:'''  We already go "big", but accurately modeling at a galactic scale redefines that notion...
 
|width=62%|'''[[Astronomical units]]:'''  We already go "big", but accurately modeling at a galactic scale redefines that notion...
 
|align=center|C
 
|align=center|C
 
|align=center|EASY
 
|align=center|EASY
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison, Greenwald]]
 
|-
 
|width=62%|'''[[Object-oriented interfaces|Object-oriented C++ Geometry API]]:'''  Extend our C++ library which provides a simple interface to BRL-CAD's core functionality.  Kickstart start a new geometry kernel.
 
|align=center|C++
 
|align=center|MEDIUM
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Rossberg]]
 
 
|-
 
|-
 
|width=62%|'''[[Point Clouds]]:'''  BRL-CAD has a basic point cloud primitive.  Beef it up, make it faster, maybe integrate with the Point Cloud Library (PCL) for evaluation.
 
|width=62%|'''[[Point Clouds]]:'''  BRL-CAD has a basic point cloud primitive.  Beef it up, make it faster, maybe integrate with the Point Cloud Library (PCL) for evaluation.
 
|align=center|C/C++
 
|align=center|C/C++
 
|align=center|MEDIUM
 
|align=center|MEDIUM
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Browder]]
 
 
|-
 
|-
 
|width=62%|'''[[Annotations]]:'''  Implement support for 2D annotations, labels that can be added to geometry.
 
|width=62%|'''[[Annotations]]:'''  Implement support for 2D annotations, labels that can be added to geometry.
 
|align=center|Perl
 
|align=center|Perl
 
|align=center|EASY
 
|align=center|EASY
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Browder]]
 
|-
 
|width=62%|'''[[Python Bindings]]:'''  With or without SWIG, wrap BRL-CAD's command library API so you can issue our creation and editing commands from Python.
 
|align=center|Python
 
|align=center|EASY
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
 
|-
 
|width=62%|'''[[Perl Bindings]]:'''  With SWIG, wrap BRL-CAD's ray-tracing library API so you can issue calls to librt ray-tracing functions from Perl.
 
|align=center|Perl
 
|align=center|EASY
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Browder]]
 
 
|}
 
|}
  
== Rendering & Scientific Analysis ==
 
 
{| bgcolor=#fff
 
!
 
!align=center|Languages
 
!align=center|Difficulty
 
!align=center|Contacts
 
|-
 
|width=62%|'''[[Shader Enhancements]]:'''  We have a functioning custom shader system in BRL-CAD, but there are now folks that specialize and there's lot of room for improvements.
 
|align=center|C
 
|align=center|EASY
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison, Greenwald]]
 
|-
 
|width=62%|'''[[Material and Shader Objects]]:'''  This one is a biggie but easy.  Implement new object entities for describing shaders and material properties, use them during ray tracing.
 
|align=center|C
 
|align=center|EASY
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
 
|-
 
|width=62%|'''[[GUI Integration of Analysis Tools]]:'''  There are a ''lot'' of visualization tools in BRL-CAD, but most aren't integrated with the GUI.  Visualizing directly within the GUI would improve usability.
 
|align=center|C
 
|align=center|MEDIUM
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Rossberg]]
 
|-
 
|width=62%|'''[[Generalized abstracted spacial partitioning capability]]:''' Need more be said?  If you're familiar with BSPs, KD trees, and grid structures, then this one is for you.
 
|align=center|C
 
|align=center|HARD
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Greenwald, Morrison]]
 
|-
 
|width=62%|'''[[High Dynamic Range Support]]:'''  We don't have displays supporting this yet, but that's never stopped us before.  Implement support for images with more than 8-bits per channel.
 
|align=center|C and/or C++
 
|align=center|EASY
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Greenwald, Yapp]]
 
|-
 
|width=62%|'''[[Analysis Library]]:'''  There are various tools in BRL-CAD for calculating weights, moments of inertia, and more.  They're stand-alone applications.  Turn them into a library.
 
|align=center|C
 
|align=center|HARD
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Yapp, Morrison]]
 
|-
 
|width=62%|'''[[Celestial mechanics particle system]]:'''  Simulate solar systems and galaxies.
 
|align=center|C/C++
 
|align=center|MEDIUM
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Greenwald]]
 
|-
 
|width=62%|'''[[Non-vacuum gravity simulator]]:'''  Simulate falling to earth.
 
|align=center|C/C++
 
|align=center|MEDIUM
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Greenwald, Morrison, Yapp]]
 
|-
 
|width=62%|'''[[Polarization]]:'''  We already do multispectral ray tracing, but don't simulate polarization effects.  Implement ray splitting and filtering.
 
|align=center|C
 
|align=center|HARD
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison, Rossberg]]
 
|-
 
|width=62%|'''[[Density functions]]:'''  Accurately represent everything from atmosphere to bone.  Implement support for parametric density functions for homogenous materials.
 
|align=center|C
 
|align=center|HARD
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Rossberg, Morrison]]
 
|-
 
|width=62%|'''[[Bending light]]:'''  Think gravity wells and satellite cameras.
 
|align=center|C
 
|align=center|MEDIUM
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
 
|-
 
|width=62%|'''[[Appleseed renderer integration]]:'''  Appleseed is rendering infrastructure used by the film industry to make pretty pictures.  Make it shoot rays at our native geometry with our ray trace library.
 
|align=center|C
 
|align=center|MEDIUM
 
|align=center|[[Google_Summer_of_Code/Project_Ideas#Mentors|Morrison]]
 
|}
 
  
 
== <An Idea of Your Own> ==
 
== <An Idea of Your Own> ==
Line 390: Line 235:
 
= Mentors =
 
= Mentors =
  
BRL-CAD operates under group mentorship.  That means you can contact anyone, not just the person assigned to you, for assistance.  The mailing list and IRC channel are the preferred communication methods.
+
Contact Sean on the brlcad-devel mailing list or via IRC to begin discussing your SOCIS project proposal:
  
 
* Christopher Sean Morrison
 
* Christopher Sean Morrison
 
** brlcad on irc.freenode.net
 
** brlcad on irc.freenode.net
** Org admin, BRL-CAD open source project lead
 
 
* Erik Greenwald
 
** ``Erik on irc.freenode.net
 
** Org admin, BRL-CAD core dev
 
 
* Cliff Yapp
 
** starseeker on irc.freenode.net
 
** BRL-CAD Mentor, core dev
 
 
* Daniel Rossberg
 
** d_rossberg on irc.freenode.net
 
** BRL-CAD Mentor, core dev, math expert
 
 
* H.S. Rai
 
** hsrai on irc.freenode.net
 
** BRL-CAD Mentor, math expert
 
 
* Tom Browder
 
** BRL-CAD Mentor, analysis expert
 
 
* Bryan Bishop
 
** BRL-CAD Mentor, python guru
 

Latest revision as of 22:05, 3 May 2017

If you want to work on computer-aided design (CAD), geometry, simulation, analysis, or graphics, you've come to the right place! Help us improve open source CAx.

cutout_sticker_256.png Under development for 30+ years, it's big, it's complicated, it's powerful. BRL-CAD will consider just about any project that relates to computer graphics or existing infrastructure.

We consider proposals for all skill levels ranging from simple to crazy hard and everything in between. Introduce yourself, and we'll help you plan one right for you.

Remember that project descriptions are just initial ideas. You must expand with considerably more detail. Change the goals to fit your experience and interests. See our checklist to get started.

Project titles link to a page with more details.

BRL-CAD Projects[edit]

High Priority Topics[edit]

Languages Difficulty
Convert MGED from Tk to Qt: Transition BRL-CAD's graphical applications from the Tk toolkit to the Qt toolkit. C/C++/Tcl/Qt MEDIUM
Annotations: Implement support for 2D annotations, labels that can be added to geometry. C/C++ MEDIUM


Rendering & Scientific Analysis[edit]

Languages Difficulty
Shader Enhancements: We have a functioning custom shader system in BRL-CAD, but there are now folks that specialize and there's lot of room for improvements. C EASY
Material and Shader Objects: This one is a biggie but easy. Implement new object entities for describing shaders and material properties, use them during ray tracing. C EASY
GUI Integration of Analysis Tools: There are a lot of visualization tools in BRL-CAD, but most aren't integrated with the GUI. Visualizing directly within the GUI would improve usability. C MEDIUM
Generalized abstracted spacial partitioning capability: Need more be said? If you're familiar with BSPs, KD trees, and grid structures, then this one is for you. C HARD
High Dynamic Range Support: We don't have displays supporting this yet, but that's never stopped us before. Implement support for images with more than 8-bits per channel. C and/or C++ EASY
Analysis Library: There are various tools in BRL-CAD for calculating weights, moments of inertia, and more. They're stand-alone applications. Turn them into a library. C HARD
Celestial mechanics particle system: Simulate solar systems and galaxies. C/C++ MEDIUM
Non-vacuum gravity simulator: Simulate falling to earth. C/C++ MEDIUM
Polarization: We already do multispectral ray tracing, but don't simulate polarization effects. Implement ray splitting and filtering. C HARD
Density functions: Accurately represent everything from atmosphere to bone. Implement support for parametric density functions for homogenous materials. C HARD
Bending light: Think gravity wells and satellite cameras. C MEDIUM
Appleseed renderer integration: Appleseed is rendering infrastructure used by the film industry to make pretty pictures. Make it shoot rays at our native geometry with our ray trace library. C MEDIUM


Web Development[edit]

Languages Difficulty
Benchmark Performance Database: BRL-CAD's Benchmark has been used for two decades to compare performance across configurations. Build a database website. Depends (likely PHP or Python) EASY
Materials Database: Create a Materials Database web site for collecting, managing, and providing programmatic interfaces to material properties. Depends (likely PHP or Python) MEDIUM


Geometry[edit]

Languages Difficulty
NURBS Editing Support: BRL-CAD doesn't currently have support for editing NURBS primitives. Fix that. C/Tcl MEDIUM
Overlap tool: Resolving geometric interferences (aka overlaps) is a common geometry editing activity. Design an awesome GUI for resolving conflicts. Tcl EASY
Vector Drawings from NURBS: Huge impact here if you can update one or more of our raytracers to provide vector output instead of raster. Perhaps render directly to PDF or SVG. C and/or C++ EASY
Plate Mode NURBS raytracing: Imported NURBS geometry often does NOT enclose space (i.e., not solid), so add support for specifying an implicit thickness. C/C++ HARD
STEP exporter: We have an importer, we need a comprehensive exporter with support for implicit CSG, NURBS, or polygonal mesh geometry. C/C++ EASY
STEP importer improvements: We have an importer, but it's preliminary. Add support for importing hierarchy information, polygonal geometry, and implicit geometry. C/C++ MEDIUM
STEP AP 242 Parser: We already parse a subset of AP203, but the new kid on the block is AP242. Make AP242 work with BRL-CAD's step-g importer. C++ HARD
IGES import improvements: We have extensive support for the International Geometry Exchange Standard (IGES) with our g-iges and iges-g converters, but they need updating. C MEDIUM
Geometry Conversion Library: Probably our biggest open source asset is our extensive collection of importers and exporters. Turn them all into a universal conversion library. C/C++ EASY
Voxelize command: Convert geometry into voxel data sets by shooting a grid of rays. The finite element analysis and volumetric rendering folks will love you. C EASY
COLLADA Importer: Create an importer for the COLLADA file format. C/C++ MEDIUM
X3D Importer: Create an importer for the X3D file format. C/C++ MEDIUM
OpenSCAD Importer: Create an importer for OpenSCAD's format. C/C++ EASY
OpenSCAD Exporter: Create an exporter for OpenSCAD's format. C/C++ EASY


Performance & Quality[edit]

Languages Difficulty
OpenCL GPGPU Raytracing: We have about two dozen primitives that need to have a ray-object intersection function converted from C to OpenCL. C/C++ MEDIUM
Coherent Raytracing: Our current raytrace pipeline dispatches and processes one ray at a time. Send bundles and convert the pipeline into phases. C/C++ MEDIUM
NURBS Booleans: We have NURBS surface-surface intersections working. Now we're using them to create evaluated forms of our CSG geometry. Make it more robust and faster. C/C++ HARD
NURBS Optimization and Cleanup: We have a fantastic implementation of NURBS evaluation but haven't gone back to clean up or speed it up. Make it pretty and fast. C/C++ MEDIUM


Infrastructure[edit]

Languages Difficulty
Geometric Constraint Solver: Our LIBPC parametric constraint library is the work-in-progress foundation of being able to validate and describe geometry relationships. C/C++ HARD
Consolidate image processing: We have 100+ image processing tools that independently read and write file data. Needs much reuse love. C EASY
Astronomical units: We already go "big", but accurately modeling at a galactic scale redefines that notion... C EASY
Point Clouds: BRL-CAD has a basic point cloud primitive. Beef it up, make it faster, maybe integrate with the Point Cloud Library (PCL) for evaluation. C/C++ MEDIUM
Annotations: Implement support for 2D annotations, labels that can be added to geometry. Perl EASY


<An Idea of Your Own>[edit]

Do you have an idea of your own? Maybe you need more ideas to inspire you? We're very open to areas of academic research, industry applications, and ideas that get you hooked on open source CAD development.

Requirements:

  • Passion for the task being suggested


Mentors[edit]

Contact Sean on the brlcad-devel mailing list or via IRC to begin discussing your SOCIS project proposal:

  • Christopher Sean Morrison
    • brlcad on irc.freenode.net