Open Source Java CAD Software for BSD

GeomSS is a geometry modeling and scripting system in Java. Write scripts that create and analyze complex geometry including NURBS curves and surfaces. This is especially useful for tasks that must be repeated with small or parametric variations.

Impact is an explicit Finite Element Program Suite which simulates dynamic impact events. It has a range of elements, contact handling and different material laws. Models can be created, solved and analyzed with the included pre- and postprocessor. Impact is based on an Explicit Time stepping algorithm. These kind of codes are used to simulate dynamic phenomena such as car crashes and similar, usually involving large deformations.

Parametric analysis is often needed for exploring design options, especially when a global optimization method is not available, or the optimization result is in doubt. Parametric analysis can also be applied to all design variables simultaneously, which forms an exhaustive search that, providing that the search grid is fine enough, will guarantee a global optimum solution. In order to perform complex parametric analyses on multiple parameters with more than a handful of alternative values each, a tool to generate commands for the simulation model to run, and to collect results afterwards will be needed. jEPlus has been developed as such a parametric tool for EnergyPlus. To see jEPlus in action, check out this video: http://youtu.be/jBA7Q7npNK4 The source code of the jEPlus project is now hosted on GitHub: https://github.com/jeplus/jEPlus/

Line-drawing and polygon-filling rasterization algorithms in Java. Simple 2D package and more complex 3D package with Z-buffering. Texture mapping not supported at the moment. Color interpolation for lines, Gouraud shading for polygons fully supported. Floating point vertex coordinates, not integer. Pixel-level aliasing, not endpoint aliasing. Doesn't use Bresenham line style! Works with all Java versions. No external dependencies. Suitable for study in academic institutions, especially as related to line-drawing accuracy. Particular attention to detail concerning chopping of accumulation errors, using a cast from 64 bit to 32 bit strategy, in the interval [1.0,2.0). Individual pixel errors with overlapping polygons or line segments are about one in a billion, but I can't reproduce any errors at the moment by using random number generation with tens of millions of cases. Emphasis not only on correctness, but also on performance for real-world use or hardware implementation.

COPanno is now at http://download.tuxfamily.org/copanno/ COPanno is a small utility to find the best solution for cutting rectangular panels in a defined-size sheet. * v1.2 Introduce multi-threading (calculation is up to 8 times faster) and internationalization support. English and French translations are done. * v1.3 Add per panel orientation keeping Copanno est un utilitaire de calepinage donnant la meilleure manière de découper des panneaux rectangulaire dans une feuille de dimension définie. * v1.2 Le calcul parallèle permet d'accélérer le traitement sur les ordinateurs multi-cœurs. La traduction en Français et en Anglais est réalisée. * v1.3 La conservation de l'orientation des panneaux (le fil) peut être définie pour chaque élément.

Library to manage DXF file Format.

The PARSEC CEE is the primary achievement of several years of effort at NASA's Marshall Space Flight Center. The CEE was developed to allow engineers in the Advanced Concepts Department to rapidly prototype launch vehicle and spacecraft concepts.

VRforCAD developed in Java and Java3D API, combines two systems: Computer-aided design (CAD) system and Virtual Reality system with its special equipments for visualization and manipulation. See more at: http://www.vrforcad.org

Software application, firmware and U.I. for 4-motors 3-axis milling machine, open hardware, software and mechanics. See also project in details for schematics and images on http://www.contesti.eu/opensource/xyz-dc-motor-controller

Clothes - sewing CAD for creation of models of clothes. Based on the new concept of the automated designing of clothes with use of parametrical model. Creates a base design of model of clothes and allows to change it depending on necessity of updating.