ROOT Team Meeting

Friday 6 Mar 2009, 11:00 → 12:50 Europe/Zurich

32/1-A24 (CERN)

11:00 → 11:05 News and scope of the meeting

Presentation by all work packages of the short term plans to move/create the web site to drupal.

11:05 → 11:10 Version 5.23/02 post-mortem

11:10 → 11:40 root/drupal site status

Speaker: Fons

11:40 → 11:45 Plans for CORE

Plans for documenting CORE, installation procedures

Speaker: Fons

11:45 → 11:50 Plans for I/O and Trees

Speaker: Philippe

June Release – 2nd revision of data model evolution (fixing issues with class ‘renaming’ in complex split TTree). – Default to Memberwise storing. – Implement merging of TTreeIndex during CloneTree. – Implement (backend of) batch fast merge (pre-selection of the location on file of the baskets). – Bug fixes!

11:50 → 11:55 Plans for CINT/Reflex/LLVM

Speaker: Axel

* CINT5, Reflex, Cintex: no development plans but bug fixes only. * CINT7: connect to Reflex dictionary (with CMS). * cling: update to LLVM's current trunk; if time permits: make reentrant. * prepare talk (cling) + poster (Reflex) for CHEP.

11:55 → 12:00 Plans for MATH

Speaker: Lorenzo

Slides Math_plans_Mar09.pdf TProfileHelper.pdf

12:00 → 12:05 Plans for GUI

Speaker: Bertrand

Slides ROOT_meeting_2009-03-06_GUI.pdf ROOT_meeting_2009-03-06_GUI.ppt

12:05 → 12:10 Plans for 2-d graphics

2-d graphics, asimage, graphviz, histpainter

Speaker: Olivier

Slides ROOT_meeting_2009-03-06_Graphics.pdf ROOT_meeting_2009-03-06_Graphics.ppt

12:10 → 12:15 Plans for PROOF

Speaker: Gerri

12:15 → 12:25 Plans for 3-d graphics, Gl, EVE, 3-D object browser

Speaker: Matevz

Graf3d plans for 5.23/04 see: http://mtadel.home.cern.ch/mtadel/mydoc/root-tm-2009-03-6/graf3d-plan.html This is too optimistic (mostly because of CHEP). But these are the things that are HOT right now. GL Integrate Timur's work for 2D with GL Timur could come in April ... Another pass on plot-painter in TGLViewer Use the GL-axes that are now done for numeric labels (Alja). Run-time detection of GL version Need something like GLEW (GL Extension Wrangler). Need to investigate with Bertrand and Timur if we can incoroprate it easily (one file, one library - if possible, would prefer to swallow it in GL module directly). Plan support for GL-2 -> shaders. Needed for multi-dimensional data-visualization - Timur did some work on this already. Plan support for rendering in a thread. This way we could keep GUI responsive during rendering, run selection (what is below mouse) separately, drop current render pass if it turns out it is not needed. Issues: most drivers can only render into the thread where they were created; Windows (?). EVE Fworks (and CMS in general) is moving to 5.22 Will start using: EVE window-manager Runge-Kutta track extrapolation, esp for muons. This will surely take some time - but Alja will also work on that. Other requests, that I keep on the stack until they become urgent Support composite shapes in extracted-geomtery mode. [ALICE] Support track-propagation in double precision. [NA62] Support 3D transformations / projections (not only 2D). [NA62] Central color-management (switch between dark/bright palettes, including GL viewer background and markup). [CMS] Add transparency support to several (all?) visualization classes (point-set, arrow, ...). 3D Object browser Generalize camera management in GL viewer. Now we have fixed collection of 7 cameras ... should relax this constraint. Then one could store current view into a named camera, move around, and be able to return to previous view. Allow each scene to have additional transforamtion matrix relative to global coordinate system. Make assessment of required changes. Do basic / obvious things. Consider also hierarhical structure - scenes within scenes. This way we will be able to place the object for the 3D browser in separate scenes and move them around, scale them, etc. . .