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The Fundamentals Of Rotational Dynamics In 3D Rigid Body Simulation

In this article, I hopefully clear the most important parts in rotational dynamics related to 3D rigid body simulation and introduce them in an intuitive way, this is mainly for non-physicists (I'm not even a physicist myself, so that's that...), so if you're a physicist or already familiar with moments of inertia well, then I don't think you're going to get anything new out of this, otherwise then this is probably for you!

It's mainly focused on engineers and programmers, so there's not a whole lot of walls of math text and giggles, mostly focused on the very fundamentals and applications of them

The article is also mainly to make sure I have gotten certain concepts right for the most part, so there may be some mistakes here and there, be warned

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UPDATE

The article seems to have a really bad tune, it was back then me writing this and i learned a whole lot later on, i don't find this to be a decent article to follow through and i wouldn't recommend it anymore per se, i'm thinking of doing a complete rewrite of this with my own simplified implementation of it (which isn't perfect and contains errors, but would be quite good for understanding), it still contains some useful information however in case you're interested.

And the little rant has been removed since I've found it to be distracting and not helpful, i've learned that they have a good use for some other things, I still don't recommend the GJK + EPA combination however, but they have some useful uses.

Some helpful resources for the time being:

Dirk Gregorius, The Seperating Axis Test

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WARNING

This may contain tons of errors, I have not carefully checked if the method used here is fully correct/safe, read the docs!

Also this is a very old gist, I'm thinking of doing a modernaized version of this for fun at some point

Combined Pages

So lately i've been playing around the idea of merging pages together to be a single linear writable memory, I've searched through the web a lot and i've never seen anyone actually doing it in a way i did, the reason behind researching around this topic was i was curious, but also it seemed useful to just merge stuff together and eliminate memory fragmentation by merging multiple chunks together to form one contigues memory you can write to

what i basically need to do is create a file mapping object that is multiple of 64KB pages of total size, each file map created is an object returned by the OS that is a "file" but can be treated as a regular memory that can be written to as well, then i allocate a virtual memory that is "reserved" to be replaced by ma