[ODE] strange thing

[fmdz@libertysurf.fr]

I had problems with openGL Performer, perhaps it may help 
you:
I had to reverse my soft matrix.
i.e. invert row and lines of the 3x3 rotation matrix, and 
negate each of its float values.
I don't know why (it works, i've spend a lot of time 
finding the problem).
for (int i=0;i<3;i++)
for (int j=0;j<3;j++)
   ode_matrix[i][j]=-my_matrix[j][i];

position coords are OK.
Maybe it's the same kind of problem...
(I use openGL Performer (from sgi) for managing my 
database (collision detection too) and displaying it, and 
ODE only for computing forces, with collisions detected 
with Performer)

good luck!
(by the way, forget directX and come into openGL... much 
more fun and portable!)

Fred

> ---------- Initial message -----------
> 
> From    : ode-admin@q12.org
> To      : <ode@q12.org>
> Cc      : 
> Date    : Mon, 18 Feb 2002 13:59:55 +0100
> Subject : [ODE] strange thing
> 
> i want to use ODE with directX 8, but there is a 
problem: everything works
> fine unless i start the dx subsystem.
> 
> if i call
> d3d->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, 
window,
> D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, 
&d3ddevice);
> 
> to create a D3D device ode calculates the first steps 
correct, but the
> collision response is wrong (the position of a box, 
reflected by a plane is
> 1.#QNAN0 for x y and z after a collision of box and 
plane)
> 
> if i comment the createdevice call out, everything 
works fine, the collision
> response seems to be ok.
> 
> there are no overlapping memory blocks or other effects 
in my code.
> 
> what can i do?
> 
> 
> 
> thanks
> 
> 
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> 
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