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Comprehensive BRL-CAD Primitive Database
Contractor rept. 16 Jun-29 Aug 2014
ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD SURVIVABILITY-LETHALITY ANALYSIS DIRECTORATE
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Ballistic Research Laboratory Computer-Aided Design BRL-CAD is an open-source computer-aided design tool that uses constructive solid geometry CSG to create models of primitive shapes. However, no database of all primitive shapes exists in BRl-CAD. The goal of this project was to create a database containing one instance of every primitive shape supported by BRL-CAD. The database includes special cases of other primitive shapes , such as a rectangular parallelepiped rpp , an arbitrary convex solid with 8 vertices arb8 . After the database was completed, a tool was created to perform the same task automatically. The primitive-shape database provides the target describers of BRL-CAD with a representative example of each primitives shape and its properties. In addition to the database, part of BRL-CADs large code base was debugged, specifically the hypersampling feature in rtarea and the error checking in rtweight were corrected by taking into account the sampling rate.
APPROVED FOR PUBLIC RELEASE