| Generating Coils in BRL-CAD |
Apr 2012 |
26 pages |
| Authors:
Clifford Yapp; QUANTUM RESEARCH INTERNATIONAL INC BEL AIR MD
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 | Springs, shock absorbers, and other parts found in many modern mechanical systems can be described geometrically using a cylindrical coil. BRL-CAD is able to produce coils using the Constructive Solid Geometry (CSG) pipe primitive, but manually inserting enough pipe control points needed to create specific individual coils is a time-consuming process. The coil procedural tool automates most of this process by procedurally generating pipe primitives to describe coil shapes defined ... |
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| A CMake-Based Cross Platform Build System for Tcl/Tk |
Nov 2011 |
18 pages |
| Authors:
Clifford Yapp; QUANTUM RESEARCH INTERNATIONAL INC BEL AIR MD
|
| Defining build logic for a large software package in multiple software development environments entails a large up-front implementation cost and an ongoing maintenance burden. CMake is an open source cross-platform build tool that allows developers to define relatively abstract build logic that is automatically translated into a variety of build system formats, reducing the burden of supporting multiple development environments. BRL-CAD's integration of Tcl/Tk as a sub-build motivated the development ... |
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| Interactive Raytracing: The nirt Command |
Apr-2009 |
58 pages |
| Authors:
Clifford Yapp; QUANTUM RESEARCH INTERNATIONAL INC BEL AIR MD
|
| The nirt command casts individual rays, according to user-specified options, and reports back a wide variety of information about the model along the specified ray. It is extremely useful for tasks such as measuring the thickness of objects and identifying gaps between objects. When used within the multi-device graphics editor environment, NIRT will produce a visible ray path, coloring the ray according to the geometry encountered along the ray. It ... |
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| Vehicle Tire and Wheel Creation in BRL-CAD |
Apr-2009 |
26 pages |
| Authors:
Clifford Yapp; QUANTUM RESEARCH INTERNATIONAL INC BEL AIR MD
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| Vehicle wheels are often approximated in BRL-CAD models with tori, cylinders, or other basic geometric shapes that represent a very rough visual and geometric approximation of a tire/wheel combination. The tire modeling tool written for BRL-CAD provides users with the ability to rapidly generate complex tire and wheel structures with standard dimensional input information. |
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