gled

The following are current news about the Gled project. Older news ...

The sources of Gled moved from svn to GitHub, into the gled-project organisation.

• gled: the core and the general libsets, with their demos.
• gled-builder: builds Gled with its external software, ROOT included, into one prefix.
• gled-hep: the libsets Alice, AliEnViz and XrdMon.
• gled-attic: the TADemo libset, early design documents and the ChangeLogs of the svn repository.
• gled-papers: papers and talks.
• greed: the Greed documents and the GreedWorld demo launcher.

Gled 2 builds and runs with ROOT 6 and GCC 15 (C++20). Gled is now under the GNU Lesser General Public License, version 3 or later. Each repository starts from a single commit. The svn repository stays at svn.gled.org, read-only.

There are no binary distributions of Gled 2.

Release focus: a couple of minor improvements in Gled and bug-fixes in external software.

• External software updates:
  • root 5.34.07 → 5.34.09
  • apr 1.4.6 → 1.4.8
  • activemq-cpp 3.7.0 → 3.7.1
• IP address resultuion helper Net1::SNetResolver.
• In XrdMonSucker try really hard to resolve clients with numeric IPs (needed as more and more servers are getting configured to not do the reverse lookup).

After a long silence, a new release is available -- but the development has not stopped in the meantime!

• 2010
  • Use FTGL for text rendering.
  • Cleanup usage of various vector / matrix classes - use Gled implementation wherever possible.
  • Improve & optimize Ray emission from ZQueens and handling on views in GUI implementation of the Eye.
  • Eyes are now connected using UNIX sockets.
  • New glass Tmp1::TabletReader for reading of strokes from Wacom tablets, showing them as beads, as WSSeeds or as 3D tube-like GTS surfaces.
  • Proper per-thread signal handling in GThread.
  • Support "detach on exit" flag in GThread.
  • Support cross-thread requests into TRint thread, see TRootXTReq.
  • Generalize iso-surface making in GledGTS.
  • Improve GTS surface coarsening, also work around bugs in GTS itself, see GTSBoolOpHelper.
• 2011
  • Use GSL for ODE integration.
  • New libset XrdMon for collecting and processing of XRootd monitoring data.
  • GTime is now fully portable, streamable and can format itself in many ways.
  • In Numerica add support for calculation of associated Legendre polynoms using GSL.
  • Generate planets from spheres using associated Legendre polynomials.
  • Basic implementation of hierarhically subdivided mesh - HTriMesh.
  • Switch from fltk-1.1 to 1.3.
  • New class ZLog for advanced logging into text files.
  • Support OSX-10.7.
• 2012
  • Most work went into development and improvements of XrdMon libset.
  • Improved thread handling -- allow for a stack of cleanup functions.
  • New classes for message passing and queuing, GQueue and GQueueSet.
  • New libset Net1.
  • Classes for acquring, processing, archiving (to ROOT TTrees) and passing-on-via-TCP of UDP packets.
  • Support running of gled/saturn without a server socket.
  • Add options for redirection of standard output and error streams and of the main Gled log stream.
  • Support running of saturn as a daemon, support pidfile option.
  • Add thread-safe, zero overhead internal clock with precision of one second to GTime (useful for logs etc).
• 2013
  • Minor improvements of XrdMon libset.
  • Support for building of "all inclusive" RPMs for gled-xrdmon.
  • Preliminary version of system config / startup functions. There is also a more generick, multi-instance set of init.d scripts in production at UCSD.

Version 1.3.1 is available for download.

Release highlights:

• Added support for:
  • OSX
  • GLSL
  • stereo rendering
  • Ogg Vorbis audio
• Many additions and improvements in GledCore and Var1 needed for greed-prototype demo:
  • General infrastructure for attachment of controller objects (Spiritios) to Extendios. This includes key and overlay handling.
  • Basic inrastructure for sound effects -- explosions, weapon and engine sounds.
  • It is now possible to take first-person control over a Crawler, drive it around, control turret orientation and shoot other Extendios (buildings, crawlers and flyers). They explode when destroyed.
  • Added land-marks.
• Libset GTS renamed to GledGTS -- needed for library separation on OSX where filesystem is case-insensitive by default.

Version 1.3.0 is available for download.

The main motivation for this release is semi-public announcement of the Greed project. Most of the development over the last few years was devoted to prepartion of basic elements for Greed-world prototype demo.

Release highlights:

• New high-level build environment for building of external software and gled - gled-builder.
• Migration to SVN.
• Build system:
  • Added support for 64-bit compilation.
  • Added support for precompiled headers.
  • Proper install and blob_install targets.
  • Beautified output, control output level via GLED_ECHO_CMDS and GLED_QUIET environment variables.
• GledCore
  • Improved transparency of thread handling. Additional threads parameters are 'nice' value and name.
  • Complete rewrite of internal represesentation of container classes to support different internal tags for contained lenses (as lens pointers, as ints, or as strings). This allowed optimal implementation of new containers glasses ZVector, ZDeque, ZNameMap and ZStringMap.
    The main issue here was to allow all this to work correctly from the Eyes and within the GUI.
  • Separate the Eye and RenderDriver from GUI and OpenGL. Now they can be used in independent threads to: a) observe selected objects and to traverse selected object-graphs; b) send MIRs back into the Gled cluster.
  • Add time support to Eventor class - can feed on system time or use internal time-step.
  • Add overlay and overlay event-hadnling support. This allows for construction of GL-GUI elements, like buttons, pagers etc.
  • Support global scaling of color brightness, point-sizes and line-widths.
  • Introduce usage of frame-buffer objects (used for screen capture).
  • Use GLEW - The OpenGL Extension Wrangler Library.
• Geom1
  • New operator class TimeMaker that applies various transformations to Eventor's internal time and possibly delivers it to registered clients (that must implement the TimeMakerClient interface).
  • Improved implementation and functionality of weaver-symbol classes: connect arbitrary nodes, texture animation, some optimizations.
  • Many improvements to triangle-mesh class TringTvor needed for Greed-demo.
• Numerica
  • ODECrawler - add support for external storage of chunked integration results.
• New libset Var1 - it contains classes for Greed-world simulations of planetoids and solar-systems.
  OPCODE library is used for collision detection.