Draw COM in fullbodymain

Main Forum
1

Hello
can i visualize COM (center of mass) during analysis in fullbody main, I am not sure where to add the draw line in the code in full body main under mocap examples, could someone guide me through this.

2

Hi Bharathhs,

I think the code below would do the trick
you can add it in eg. Labspecific.any file

AnyFolder ShowCoM ={
 AnyKinCoM CoMMeasure =  {
          AnyFolder& ref = Main.HumanModel.BodyModel;
 };

AnyDrawSphere Sphere ={
RGB={0,0,1};
Position = .CoMMeasure.Pos;
ScaleXYZ={1,1,1}*0.2;
};
};

Best regards
Søren

2 Likes
3

Hello
the above code of yours works perfectly fine. and it is possible to visualize the COM sphere in the boy model. I want to also know how to get a line through the center of mass. I tried to draw a reference frame from the center of mass sphere but it doesnt move with the position of the sphere. is there a way to have a line from the COM sphere to the ground. So visually i could check the COM and COP lines overlap for a ballet dancers during turn movements.

AnyFolder Interface = {
AnyKinCoM CenterOfMass = {

  AnyFixedRefFrame GlobalRef ={
            Origin={0,0,0};
            AnyDrawRefFrame drw={
                ScaleXYZ=0.6*{0,0,-1};
             };
    
    AnyDrawSphere COM_ball ={
      RGB={1,0,0};
      Position = Main.HumanModel.BodyModel.Interface.CenterOfMass.Pos;
      ScaleXYZ={1,1,1}*0.1;
    };

};

};

4

If you have any solution for this. It would be a great help.
thank you

5

Hi Bharathhs,

Sorry for the slow answer, please see the object AnyDrawLine it can draw a line between two points "p0" and "p1" i think this will be the easiest way to do this.

Best regards
Søren

6

thank you so much
yes it works.

7

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