Open Source C++ Simulation Software

Founded in 1997, FlightGear is developed by a worldwide group of volunteers, brought together by a shared ambition to create the most realistic flight simulator possible that is free to use, modify and distribute. FlightGear is used all over the world by desktop flight simulator enthusiasts, for research in universities and for interactive exhibits in museums. FlightGear features more than 400 aircraft, a worldwide scenery database, a multi-player environment, detailed sky modelling, a flexible and open aircraft modelling system, varied networking options, multiple display support, a powerful scripting language and an open architecture. Best of all, being open-source, the simulator is owned by the community and everyone is encouraged to contribute.

GLUI is a GLUT-based C++ user interface library which provides controls such as buttons, checkboxes, radio buttons, and spinners to OpenGL applications. It is window-system independent, using GLUT or FreeGLUT.

PlaTec is a 2D terrain generator that uses a simplified model of plate tectonics to produce realistic heightmaps in real time. The simulator starts with a flat fractal map and splits it randomly into plates. Plates are moved around the map. If continents of two plates collide, they fold creating mountain belts. If oceanic crust of one plate collides with another plate, subduction occurs resulting in coastal mountain ranges or island chains. This project is part of my Bachelor of Engineering thesis in Metropolia University of Applied Sciences, Helsinki, Finland. The thesis is freely downloadable from http://urn.fi/URN:NBN:fi:amk-201204023993 . A Youtube video showing the simulator in action is available at http://www.youtube.com/watch?v=bi4b45tMEPE .

surfit is an open source and free gridding and contouring software. surfit can do interpolation/approximation of points, contours and surfaces, can take fault lines and trend surfaces into account, can use inequalities and other conditions. Supports a lo

30 modules, 300+ Synthedit prefabs ranging from subcontrol circuits to synths, fsu effects, drum sequencers, near complete copy/paste/save/load system for xox style patterns. 2 complete vst effects, and one vst synth.

Palomino was an unfinished action/combat flight simulator. Air-to-air combat mode was never implemented. However, it does have a land-on-carrier and shoot-SAMs missions. Requires OpenSceneGraph. Optional: SDL, FLTK.

A parametric, feature-based, sketch-driven 3D CAD application, built around a geometrical constraint solving engine. Project is in early development stage. The FreeSG library (http://freesg.org/) is required.

slab3d is a real-time virtual acoustic environment rendering system. It includes two rendering applications, libraries for spatial auditory display and audio signal processing development, and a set of tools for HRTF analysis and visualization.

EtiC is a galaxy simulation software that generates and renders a mock galaxy for rational estimation of the number of extraterrestrial civilizations. Stars and planets are simulated with plausible physical characteristics, based on user-adjustable parameters. An EtiC simulation run consists to generate a galaxy disk physical stars, associate planets to the stars, and for habitable planets, simulate the life stages evolution until extinction. A visual animation of the galaxy and user selection of highlighted star-planet objects is provided, together with statistics (25+ graphs) and estimates of Drake equation factors. The V2_1 provides several new features: planets surface magnetic field, reworked life stage transitions, integration of MW exoplanets catalog, planets view and graphs window optionally on different threads... EtiC is based on OpenGL / GLFW 3.2, runs on MSWindows 7 and MacOsX. Source code in C++, was developped using the Dev-C++ IDE and XCode.

syfluid is a funny toy as well as a real simulation. It simulates a fluid or a gas in a very colorful, graphic and sometimes psychodelic way. In realtime! Drag while your right mouse button is pressed to "draw" the fluid/density field. Drag while your left mouse button is pressed to make the whole thing move, i.e. to "draw" the "forces" that you're adding to the fluid/density field. Press "r" to clear the screen and "m" to open the menu. Press "1" .. "8" to switch color presets. SPACE to pause. "s" to save a png or jpg. syfluid is written in C++ using OpenGL. Even though it is heavily performance optimized and using OpenGL Shading Language (GLSL), it is a performance hog. Use "f" to show the FPS. If they are lower than 30, then reduce the quality parameter that you find in the menu from 200 to e.g. 100. For very fast graphic cards, try 400 and above. This fluid simulation is based on on Jos Stam's paper: http://www.dgp.toronto.edu/people/stam/reality/Research/pdf/GDC03.pdf

Experimental Lindenmayer System generator, in 3D using OpenGL. Used for modeling the fractal growth processes of plants.

SpiceX is a simple schematic capture program for graphical interaction with Spice-based electronic simulation cores, i.e., placing components, wires and test points. SpiceX creates NETLISTs and runs simulations directly from the GUI.

A library for Ambisonic encoding, decoding, rotating, zooming, and other processing, up to 3rd order. It takes an object oriented approach. UPDATE: Greetings, I have recently started to move over to GitHub and have therefore cloned the project over there. This project will stay open but there won't be any more updates happening here. Any updates will happen over at the new hosting. Thanks!

Animants are virtual ants. Their name comes from the combination of "ants" and "animats", an animat being "a sofware approximation of a living creature". Animants aim to simulate the behaviour of living animals.

Automata editor is a vector editor for drawing finite automata according to VauCanSon-G format with tools for working with finite automata such as basic algorithms, exporting transition table to LaTeX format and automata work simulation.

Scientific software for the physically accurate photorealistic visualisation of relativistic (near light-speed) scenarios.

The objective of CLJ++(owned by ChenLuJie) is to gives lots of convenient to image processing developers. This tool has been used in university's lab with many kind of purposes by researchers.

3D cellular automata modelling software for large general purpose simulations. Uses custom scripts for rules and can distribute processing over several machines.

EcoMod is an OpenGL application for 3D modelling, simulation and visualization of ecosystems. Trees are modelled and used within simulation to render the emerging natural phenomena of spontaneous afforestation process. Multidisciplinary.

FlowVR is an open source middleware tailored for high performance in situ data processing and analytics running on large parallel machines

Basic framework for doing better GL demos

A class/library which uses the graphic card for linear algebra. Warning : you will need a GeForce 8 serie to take profit of this class.

A High Performance 3D engine and Game engine, specially designed for Physics and mechanical simulations.Integrates physics, Portal Rendering, OpenGL and Cg shaders.

GIMIAS is a workflow-oriented environment for solving advanced biomedical image computing and individualized simulation problems, which is extensible through the development of problem-specific plug-ins. In addition, GIMIAS provides an open source framework for efficient development of research and clinical software prototypes integrating contributions from the Physiome community while allowing business-friendly technology transfer and commercial product development.

libPunts is a tiny 3D rendering engine focused on developing physics simulations. Gravetat is a gravity and electromagnetism simulator built over libPunts.