Fw: [ODE] Gravity

Tobias Thorsen tobias at chaseace.com
Tue May 13 05:26:02 2003


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What is the scale in ODE? is 1 unit one metre?

----- Original Message -----=20
From: Pierre Terdiman=20
To: Charles Ingalls ; ode@q12.org=20
Sent: Tuesday, May 13, 2003 11:18 PM
Subject: Re: [ODE] Gravity


Probably because of scaling - your meshes are too big.

  ----- Original Message -----=20
  From: Charles Ingalls=20
  To: ode@q12.org=20
  Sent: Tuesday, May 13, 2003 4:15 AM
  Subject: [ODE] Gravity


  Hi,

  If I set dWorldSetGravity (dWorldID, 0, 0, -9.8);
  with a timestep of 0.01,
  the objects are falling very slowly...(like on the moon).

  Could someone explain me why ???
  This -9.8 means 9.8 m/s/s isn't it ?

  Thanks,

  Charles.
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<DIV><FONT face=3DArial size=3D2>What is the scale in ODE? is 1 unit one =

metre?</FONT></DIV>
<DIV>&nbsp;</DIV>
<DIV style=3D"FONT: 10pt arial">----- Original Message -----=20
<DIV style=3D"BACKGROUND: #e4e4e4; font-color: black"><B>From:</B> <A=20
title=3Dp.terdiman@wanadoo.fr =
href=3D"mailto:p.terdiman@wanadoo.fr">Pierre=20
Terdiman</A> </DIV>
<DIV><B>To:</B> <A title=3Dcharles.ingalls@freesbee.fr=20
href=3D"mailto:charles.ingalls@freesbee.fr">Charles Ingalls</A> ; <A=20
title=3Dode@q12.org href=3D"mailto:ode@q12.org">ode@q12.org</A> </DIV>
<DIV><B>Sent:</B> Tuesday, May 13, 2003 11:18 PM</DIV>
<DIV><B>Subject:</B> Re: [ODE] Gravity</DIV></DIV>
<DIV><BR></DIV>
<DIV><FONT face=3DArial size=3D2>Probably because of scaling - =
your&nbsp;meshes are=20
too big.</FONT></DIV>
<DIV>&nbsp;</DIV>
<BLOCKQUOTE=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV=20
  style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
  <A title=3Dcharles.ingalls@freesbee.fr=20
  href=3D"mailto:charles.ingalls@freesbee.fr">Charles Ingalls</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A title=3Dode@q12.org=20
  href=3D"mailto:ode@q12.org">ode@q12.org</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Tuesday, May 13, 2003 =
4:15 AM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [ODE] Gravity</DIV>
  <DIV><BR></DIV>
  <DIV><FONT face=3DArial size=3D2>Hi,</FONT></DIV>
  <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DArial><FONT size=3D2>If I set <FONT=20
  color=3D#0000ff>dWorldSetGravity (dWorldID,=20
  0,&nbsp;0,&nbsp;-9.8);</FONT></FONT></FONT></DIV>
  <DIV><FONT face=3DArial color=3D#0000ff size=3D2><FONT =
color=3D#000000>with a</FONT>=20
  <FONT color=3D#000000>timestep of 0.01,</FONT></FONT></DIV>
  <DIV><FONT face=3DArial size=3D2>the objects are falling very =
slowly...(like on=20
  the moon).</FONT></DIV>
  <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DArial size=3D2>Could someone explain me why =
???</FONT></DIV>
  <DIV><FONT face=3DArial size=3D2>This -9.8 means 9.8 m/s/s isn't it =
?</FONT></DIV>
  <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DArial size=3D2>Thanks,</FONT></DIV>
  <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DArial =
size=3D2>Charles.</FONT></DIV></BLOCKQUOTE></BODY></HTML>

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