[ODE] Re: ODE Digest, Vol 12, Issue 40

[Pete Baron]

Hi Liu,

the forces are set to zero at the end of quickstep.c (line 779):

 // zero all force accumulators
 for (i=0; i<nb; i++) {
  dSetZero (body[i]->facc,3);
  dSetZero (body[i]->tacc,3);
 }

you should be able to copy them somewhere safe inside this loop and use the
copied values.

cheers,

Pete Baron
sibaroni at hotmail.com
http://home.btconnect.com/pete/homepage.html

>Date: Tue, 31 Aug 2004 23:36:29 +0800
>From: "Liu" <liu.mailbox at msa.hinet.net>
>Subject: Re: [ODE] Re: Box on The Ground
>To: "Ode at Q12. Org" <ode at q12.org>
>Message-ID: <000d01c48f70$4a64ddd0$52fb8bdc at boycomputer>
>Content-Type: text/plain; charset="big5"
>
>If I want to get the Box force from the ground, how can i get it ?
>I use body.getForce( );
>but it always get none.
>
>thanks a lot.