New and a little confused

Archive AnyScript Yahoo archive
1

Hello all,
I’m sorry if this is a dumb question, but I’ve been working the
Mannequin file trying to set up a custom initial position and I’m
stuck. I would like to determine the overall center of mass and moment
of inertia of the body in this initial position. Is there an easy way
to do this? I can’t seem to find this anywhere. I am using the free
posture full body ARep model. Thanks in advance,

Kenton Harris

2

Hi Kenton

It is a relevant question

You can use the AnyKinCoM object for measuring the center of mass of a
number of segments.

So writing something like this should measure the collective center of mass
for the entire human model

AnyKinCoM CenterOfMass={

AnyFolder &ref=Main.Model.HumanModel ; //or similar….

Unfortunately there in no easy way like for the CoM to get the overall
moment of inertia out, this will have to be done through transformations
written in your script.

Best regards

Søren, AnyBody Support

From: anyscript@yahoogroups.com [mailto:anyscript@yahoogroups.com] On Behalf
Of uvamfd
Sent: 19 March 2008 05:32
To: anyscript@yahoogroups.com
Subject: [AnyScript] New and a little confused

Hello all,
I’m sorry if this is a dumb question, but I’ve been working the
Mannequin file trying to set up a custom initial position and I’m
stuck. I would like to determine the overall center of mass and moment
of inertia of the body in this initial position. Is there an easy way
to do this? I can’t seem to find this anywhere. I am using the free
posture full body ARep model. Thanks in advance,

Kenton Harris

[Non-text portions of this message have been removed]

3

I’ve implemented the code into the FreePosture.Main file, and the
Center of Mass folder appears in the model tree, but the values are
blank. Help!

Thanks,
Kenton Harris

— In anyscript@yahoogroups.com, “AnyBody Support” <support@…> wrote:
>
>
>
> Hi Kenton
>
>
>
> It is a relevant question
>
>
>
> You can use the AnyKinCoM object for measuring the center of mass of a
> number of segments.
>
>
>
> So writing something like this should measure the collective center
of mass
> for the entire human model
>
>
>
> AnyKinCoM CenterOfMass={
>
>
>
> AnyFolder &ref=Main.Model.HumanModel ; //or similar….
>
>
>
> Unfortunately there in no easy way like for the CoM to get the overall
> moment of inertia out, this will have to be done through transformations
> written in your script.
>
>
>
> Best regards
>
> Søren, AnyBody Support
>
>
>
>
>
> _____
>
> From: anyscript@yahoogroups.com [mailto:anyscript@yahoogroups.com]
On Behalf
> Of uvamfd
> Sent: 19 March 2008 05:32
> To: anyscript@yahoogroups.com
> Subject: [AnyScript] New and a little confused
>
>
>
> Hello all,
> I’m sorry if this is a dumb question, but I’ve been working the
> Mannequin file trying to set up a custom initial position and I’m
> stuck. I would like to determine the overall center of mass and moment
> of inertia of the body in this initial position. Is there an easy way
> to do this? I can’t seem to find this anywhere. I am using the free
> posture full body ARep model. Thanks in advance,
>
> Kenton Harris
>
>
>
>
>
> [Non-text portions of this message have been removed]
>

4

Hi Kenton

I can think of two things which could go wrong.

1 the measure did not find any segments listed in the measure

2 the kinematical analysis was not done, so the position of the CoM was not
calculated, it will then have a zero value if you click on the
CenterOfMass.Pos item in the ModelTree.

if you look at the CoM in the ModelTree you should be able to see a object
names SegNames this is a list of the segments included in the measure. If
this is empty it is because no segments was included into the measure.

If this do not provide any help, please make a copy of the script used to
create the AnyKinCoM measure so something like

AnyKinCoM CenterOfMass={
AnyFolder &ref=Main.Model.HumanModel ; //or similar

}

And give a detailed description of the analysis steps you did, and which
results you got.

Best regards

Søren

From: anyscript@yahoogroups.com [mailto:anyscript@yahoogroups.com] On Behalf
Of uvamfd
Sent: 24 March 2008 22:16
To: anyscript@yahoogroups.com
Subject: [AnyScript] Re: New and a little confused

I’ve implemented the code into the FreePosture.Main file, and the
Center of Mass folder appears in the model tree, but the values are
blank. Help!

Thanks,
Kenton Harris

— In anyscript@yahoogrou <mailto:anyscript%40yahoogroups.com> ps.com,
“AnyBody Support” <support@…> wrote:
>
>
>
> Hi Kenton
>
>
>
> It is a relevant question
>
>
>
> You can use the AnyKinCoM object for measuring the center of mass of a
> number of segments.
>
>
>
> So writing something like this should measure the collective center
of mass
> for the entire human model
>
>
>
> AnyKinCoM CenterOfMass={
>
>
>
> AnyFolder &ref=Main.Model.HumanModel ; //or similar….
>
>
>
> Unfortunately there in no easy way like for the CoM to get the overall
> moment of inertia out, this will have to be done through transformations
> written in your script.
>
>
>
> Best regards
>
> Søren, AnyBody Support
>
>
>
>
>
> _____
>
> From: anyscript@yahoogrou <mailto:anyscript%40yahoogroups.com> ps.com
[mailto:anyscript@yahoogrou <mailto:anyscript%40yahoogroups.com> ps.com]
On Behalf
> Of uvamfd
> Sent: 19 March 2008 05:32
> To: anyscript@yahoogrou <mailto:anyscript%40yahoogroups.com> ps.com
> Subject: [AnyScript] New and a little confused
>
>
>
> Hello all,
> I’m sorry if this is a dumb question, but I’ve been working the
> Mannequin file trying to set up a custom initial position and I’m
> stuck. I would like to determine the overall center of mass and moment
> of inertia of the body in this initial position. Is there an easy way
> to do this? I can’t seem to find this anywhere. I am using the free
> posture full body ARep model. Thanks in advance,
>
> Kenton Harris
>
>
>
>
>
> [Non-text portions of this message have been removed]
>

[Non-text portions of this message have been removed]