BRL-CAD is a powerful cross-platform open source combinatorial
solid modeling system that includes an interactive 3D solid geometry
editor, a network-distributed symmetric multiprocessing (SMP)
high-performance ray-tracer with support for rendering and geometric
analysis, image and signal-processing tools, a system performance
analysis benchmark suite, a flexible geometry scripting interface,
and a high-performance geometric representation and analysis library.
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Recent Releases
7.40.017 Oct 2024 12:45
major feature:
This major release of BRL-CAD improves the robustness of the facetize
Command. Building on work begun in 7.38.0, for the first time BRL-CAD
is able to successfully facetize all of BRL-CAD's example geometries.
This involves a major change to the processing pipeline of the
Facetize command, allowing handling of individual primitives to be
Fault tolerant and automatically attempting fallback methods.
Historically BRL-CAD facetize has attempted to produce output meshes
Even when individual operations fail by silently skipping over failing
Inputs, but now this behavior is changed to a stricter policy of
Halting when individual elements of the process do not succeed.
This release also incorporates the tool 'gist' for generating a one.
Page graphical overview and summary of the contents of a.g database.
This tool is the culmination of work by multiple student teams from
Texas A M University and incorporates automatic layout features to
Produce geometry-appropriate visual arrangements.
Also new in this release are capabilities for testing and repairing.
Triangle meshes. The lint command will now validate solid BoT
Behavior with the raytracer, and the 'bot repair' command is able to
Perform hole filling operations on some categories of non-manifold
BoTs. Another related new feature allows users to generate explicit
Volumetric BoTs using plate mode BoTs as inputs via the 'bot extrude'
Command.
This release introduces a major change in the management of 3rd party.
Dependencies. The src/other directory has been replaced by an
External repository specifically tasked with the job of managing 3rd
Party libraries. By default BRL-CAD will download and build necessary
Dependencies as part of its build automatically. However, note that
an internet connection is required by default to access this
Repository. See the INSTALL file for more details and options for
Preparing to build without internet availability.
Developers requiring only a subset of BRL-CAD (for example,
7.38.221 Mar 2024 04:45
minor feature:
Added "rtsurf" exterior surface area tool prototype - Sean Morrison.
Updated sqlite3 to version 3.45.1 - Cliff Yapp.
Updated libpng to version 1.6.43 - Cliff Yapp.
Updated zlib to version 1.3.1 - Cliff Yapp.
Updated and corrected dbconcat man page - Cliff Yapp.
Improved ambient occlusion rt during -k cut planes - Sean Morrison.
Changed rt ambient occlusion randomization default - Sean Morrison.
Added ambient occlusion example to rt manual pages - Sean Morrison.
Rtweight output display inside MGED - Chris McGregor.
Added shipping container example geometry model - Josh Baker.
Added traffic light example geometry model - Chris McGregor.
Improved rtwizard command-line option reporting - Sean Morrison.
Added self-intersecting torus ray tracing support - Sean Morrison.
rt crash rendering to -F/dev/null - Sean Morrison.
Added mater man page density table example - Chris McGregor.
Adjusted default ghosting intensity in rtwizard - Josh Baker.
MGED command line handling of objects named 'y' - Cliff Yapp.
Double printing of last 'search -exec' result - Chris McGregor.
Improve 'search -v' to support multiple levels - Chris McGregor.
Update 'search -v' to report # of objects found - Chris McGregor.
Added a "bots only" mode to conversion.sh script - Cliff Yapp.
Asc2g/g2asc support for brep primitives - Cliff Yapp.
Added brep and bot versions of pinewood.g model - Josh Baker.
Added new.g example file "Annual Gift Man" - Josh Baker.
Dsp terrain file data loading for relative paths - Cliff Yapp.
Updated Manifold lib for improved facetize robustness - Cliff Yapp.
7.38.006 Jan 2024 16:45
minor feature:
This major release of BRL-CAD introduces significant improvements to
the robustness of the facetize command by leveraging the Manifold
library for boolean evaluation of meshes. Facetization is an operation
that converts boolean CSG hierarchies to evaluated triangle meshes,
commonly used as a preliminary step in geometry export. As an
example, the following results show before-and-after differences when
processing high level assemblies in BRL-CAD's example geometry files:
success, old: 88.9 (249 of 280) Time elapsed: 7256 seconds
success, new: 98.9 (277 of 280) Time elapsed: 1044 seconds
* add 'brep dump' subcommand to write out brep objects - Cliff Yapp
* improve 'x' default behavior in MGED - Chris McGregor
* fixed 'edcolor' and 'color -e' on Windows - Chris McGregor
* ported fbcolor, fblabel, fbpoint, fbzoom to Windows - Sean Morrison
* new 'gist' tool for generating 1-page geometry info summary reports
- Allyson Hoskinson, Andrew Plant, Mark Sturtevant,
- Danny Chen, Michael Tao, Sean Morrison
* add support for dbconcat -O (overwrite) - Chris McGregor
* improved 'lc' -d and -m interactions with aircodes - Chris McGregor
* fixed 'make bot' inverted face normals - Chris McGregor
* fixed 'l' evaluation for pathed objects - Chris McGregor
* improved MGED faceplate params control, added font_size - Cliff Yapp
* fix MGED 'brep' command crashing without database open - Cliff Yapp
* fix MGED 'pnts read' and 'make_pnts' commands - Chris McGregor
* improved NURBS editing functionality - Gregory Li
* fix MGED 'listval' crashing with max path lengths - Chris McGregor
* fixed garbage_collect MGED command on Windows - Cliff Yapp
* fixed archer crashing with 'make' command - Cliff Yapp
* improved and restructured rtwizard's manual page - Sean Morrison
* fixed E command in MGED - Cliff Yapp
* made improvements to a variety of manual pages - Josh Baker
* remove bundled burst tool (DEPRECATED 7.32) - Cliff Yapp
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