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Brl cad vs free cad7/1/2023 ![]() However, the notes in the BRL-CAD Overview make a pretty strong case for why I should love CSG (and I have to admit that CSG seems more intuitive to me): ![]() Given these facts, I was quick to dismiss BRL-CAD as incapable of representing a large amount of modern CAD data, and therefore somewhat questionable as a common interchange tool. ![]() (Original caption: “Stryker ICV w/ Slat Armor rendered with ADRT/RISE”) BRL-CAD is a CSG-based CAD system developed by the US Army Research Lab. The program has been under continuous development during all that time, although it was only a few years ago that it was released under a free license. This is at least partly because BRL-CAD traces its origins back to 1979 at the US Army Research Laboratory. The more popular system these days is called “Boundary Representation” (BREP) which is what you see in Blender, for example. I advocated building something on top of Blender, which may still be a decent idea.īut I’m starting to think I gave really short shrift to the US Army Research Lab’s BRL-CAD, which has recently released a new version (7.8.0) with support for Windows and a number of user interface and modeling tool improvements.īRL-CAD’s design is based on the idea of “Constructive Solid Geometry” (CSG), a CAD representation model which has become less stylish in recent years. It seems like it’s been almost half a year since I wrote TFME4: Tools of the Trade in which I explored the serious options for 3D CAD on GNU/Linux, and didn’t think we had much.
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