[ODE] weird plane behavior

[Martijn Faassen]

Daniel K. O. wrote:
> Martijn Faassen escreveu:
>> vertical: 1, 0, 0, 10
>>
>> I would expect this plane to be 10 units in the x direction.
> 
> Unfortunatelly, the planes in ODE aren't planes; they are half-spaces.
> Anything moving inside the half-space tends to be "ejected". So
> multiply the whole plane equation by -1 to get a "plane facing the
> other side" (i.e. negate the plane normal).

I've just expanded the wiki with this information. Since I'm not very 
familiar with this topic, I hope I did okay. Someone feel free to verify 
and update the last paragraph here:

http://opende.sourceforge.net/wiki/index.php/Manual_%28Collision_Detection%29#Plane_Class

Regards,

Martijn