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I have the suspicion that the equation that converts euler angle rotations to quaternions using the arbitrary vectors e1, e2 and e3 seem not only to work with arbitrary permutation of the X, Y, Z axes, but also works if you combine axes that are aligned in the same direction.
If you check the equation for two successive rotations of, say theta1 and -theta1 around the same axis, then you'll...
2008-05-01 16:59:36 UTC in mjbWorld
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The Physics Abstraction Layer (or PAL) will allow EVO to support several physics engines through a unified interface. The physics engines officially supported by PAL include ODE, Newton, Bullet, Tokamak, PhysX, TrueAxis, JigLib, and others. For more information, you can directly go to PAL's home page: http://www.adrianboeing.com/pal/.
2008-01-18 20:26:42 UTC in EVO
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Hello Adrian,
What do I get if I try to load PAL and there is an error such as a misplaced/missing DLL? According to what I can see in the code, the pointer will not be NULL, so can I catch an error or does the application terminates?
Thank you,
Nicolas.
2008-01-11 18:07:15 UTC in PAL - Physics Abstraction Layer
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Hello Adrian,
In ODE, and maybe in other physics simulators, there several contacts may occur within the same timestep when two convex objects collide. The contact sensor in PAL seems to return only one contact per time step. Is that possible to record every contact, say, by having several contact sensors on the same body? And what about a body at rest that touches two objects at a time? (for...
2008-01-11 02:46:04 UTC in PAL - Physics Abstraction Layer
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Hello,
I will use this forum to write news about the implementation of EVO. As nobody (I mean no human) has posted so far on this forum, I can send posts here that won't be drawn by other messages. I assume this situation may change, but for the moment, I will turn it to my advantage: I hope at least the first tens of posts will be the only ones on this forum. By that time, there will be...
2007-09-14 18:16:51 UTC in EVO
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We are currently developing a tool that shows the experiment data in a visual manner (wxWidgets), so the user will have an overview of the experiment data collected during a run (which is usually huge). Screenshots are available as well as a pre-alpha working version. You can contact me at nchaumon@kgi.edu for more information!
2007-08-15 17:08:16 UTC in EVO
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EVO will be user friendly thanks to a graphical user interface that will simplify tremendously the setup of an experiment, realtime interaction with it as it is running, and the offline analysis of the data.
2007-08-06 03:30:26 UTC in EVO
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EVO is undergoing a revamping to allow plugin support. This way, a user who comes up with a new feature (such as a new genotype structure, a new environment, or a new optimization algorithm) can turn it into a plugin. This plugin is ready to be used by EVO without any modification to the base code.
2007-04-26 03:44:40 UTC in EVO
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Download EVO 0.1 and run experiments to evolve walking creatures! Try out different parameters in the configuratoin file and see how it influences the simulations. Also the source code gives an idea of EVO's architecture. Enjoy!
2007-03-31 20:15:12 UTC in EVO
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nchaumon committed revision 2 to the EVO SVN repository, changing 2 files.
2007-03-31 06:11:31 UTC in EVO
