Search found 15 matches

by Jean-Olivier Racine
Tue Feb 09, 2010 2:26 pm
Forum: SimTK Core Toolset
Topic: Question about Constraint types
Replies: 15
Views: 1722

RE: Question about Constraint types

<t>Hello Sherm,<br/> <br/> Very interesting solution you suggest there. This brings a comment and a question:<br/> <br/> Comment:<br/> The documentation, and more specifically the user's guide (section 2.3.1), suggest cutting a *joint* and not a body. It would be a nice addition to change that to th...
by Jean-Olivier Racine
Mon Mar 16, 2009 12:11 pm
Forum: SimTK Core Toolset
Topic: debug libs on windows
Replies: 6
Views: 1117

RE: debug libs on windows

I second the motion. Another example is under Vista 64, where the 32 programs are installed under Program Files (x86).
by Jean-Olivier Racine
Mon Mar 16, 2009 10:42 am
Forum: SimTK Core Toolset
Topic: Inverse Dynamics
Replies: 17
Views: 2842

RE: Inverse Dynamics

<t>Hello Sherm,<br/> <br/> I am surprised by your answer: is it possible to build from source? Each time I looked at the SVN access, it seems all there is in there is the documentation and some build information, I've never seen any source code. Where can I get the source to build from it? This woul...
by Jean-Olivier Racine
Thu Mar 12, 2009 5:06 pm
Forum: SimTK Core Toolset
Topic: Inverse Dynamics
Replies: 17
Views: 2842

RE: Inverse Dynamics

They are in my original message, in the P.-.P.-S. section, at the bottom.

Thanks guys,
by Jean-Olivier Racine
Thu Mar 12, 2009 3:34 pm
Forum: SimTK Core Toolset
Topic: Inverse Dynamics
Replies: 17
Views: 2842

RE: Inverse Dynamics

Hello Peter,

I am linking dynamically and I get the error at link time.

Note that I ran simulations without any problems. It is specifically the realize() call (which has a 2nd default argument of Stage::LastValid or something like that) that is causing problems.
by Jean-Olivier Racine
Thu Mar 12, 2009 12:40 pm
Forum: SimTK Core Toolset
Topic: Inverse Dynamics
Replies: 17
Views: 2842

RE: Inverse Dynamics

<t> const SimTK::Vec3 PelvisCoM = SimTK::Vec3(-1.76, 5.45, 5.42);<br/> const SimTK::Vec3 PelvisRASIS = SimTK::Vec3(3.76, 8.78, 4.15);<br/> const SimTK::Vec3 PelvisLASIS = SimTK::Vec3(3.76, 8.78, -22.09);<br/> const SimTK::Vec3 PelvisRPSIS = SimTK::Vec3(-11.33,8.58,-4.53);<br/> const SimTK::Vec3 Pelv...
by Jean-Olivier Racine
Thu Mar 12, 2009 12:38 pm
Forum: SimTK Core Toolset
Topic: Inverse Dynamics
Replies: 17
Views: 2842

RE: Inverse Dynamics

<t>Hello Peter,<br/> <br/> I am trying to implement the method we had discussed here and I am having a hard time doing so.<br/> <br/> I first create some bodies (Body::Rigid) and then mobilizes them (MobilizedBody::Orientation).<br/> <br/> I the realize the topology, get the default state, then appl...
by Jean-Olivier Racine
Fri Nov 21, 2008 8:21 am
Forum: SimTK Core Toolset
Topic: Inverse Dynamics
Replies: 17
Views: 2842

RE: Inverse Dynamics

<t>Thanks for underlining this fact.<br/> <br/> There are two different cases of kinematic data:<br/> 1. From position based sensors<br/> 2. From inertial based sensors<br/> <br/> In the first case, I am unsure how it would be done in the "online" solution to be honest. Maybe some numerical differen...
by Jean-Olivier Racine
Fri Nov 21, 2008 8:15 am
Forum: SimTK Core Toolset
Topic: Inverse Dynamics
Replies: 17
Views: 2842

RE: Inverse Dynamics

Yes, you are right, this would be an option. ALthough we could also do it using a TimeStepper and an Event Handler, I believe. But I'm not sure there would be a gain.
by Jean-Olivier Racine
Thu Nov 20, 2008 2:35 pm
Forum: SimTK Core Toolset
Topic: Inverse Dynamics
Replies: 17
Views: 2842

RE: Inverse Dynamics

<t>Thank you very much for your answer Michael.<br/> <br/> It seems I am lucky with my timings and I will be quite happy to answer any questions regarding what we need or hope to have. <br/> <br/> Before I get into our needs, I just want to make sure I understand the two options properly:<br/> <br/>...