Raydium 3D Game Engine

Ok, cylinders removed.
The path is clear if you want to do yourself

I've just seen that capsules creation is a bit wired. RAYDIUM_ODE_AUTODETECT does not work, Z axis is always used, and arguments given for capsule creation to Raydium are not the sames as the ones sent to ODE (length is (ty-(tx*2.0f)) ...) so it's not possible to create again the capsule using dGeomCapsuleGetParams() ...

I'll try to change this, because simply switching test6's rockets from box to capsule tends to be -quiet- complex !

Ops, I forgot autodetect (it was experimental and a bit tricky).

About axis, is always Z, according ODE guys (i asked'em). So i explain in the doc that the models must have cylinder length in Z axis.

The ty=ty-(tx*2.0f) was the "human-friendly change" i did, but i knew i would have to revert it soon or later. Beware: this revert will impact in the autodetect function (cause this function will return the full length, not the internal cylinder length). Also thinking in this function it's reasonable to make mandatory that models be Z aligned... or adding a new parameter to extract the length orientation (but than you will have to store it, or you won't be able to draw the debug capsule).

There is no glut functions to draw a capsule, right? I didn't found it.

Seriously, this commit was done way too fast ... Size autodetect was fully broken: Y and Z axis were all swaped, radius was in fact diameter, debug drawing was broken (length was not used correctly) and quadratic were not deleted.

Already spent almost 3 hours on this, and still a lot to do.

It should be known, now: Adding an new shape is an important task, it needs rigorous testing.