dynamic centroid? 4

[jagodragon]

hello again

i was hoping some one could tell me if it is possible to create a poit at the centroid of a shape that will update when the shape changes? i know you can create a point on a surface that will dynamicly update to the center, but i realy need one that can do this to the cnetroid not the center. is it even possible, or would i just need to extract a center of gravity point when ever i change my shape? and honestly, i don't realy know if center of gravity is the save as centroid but it is the closest i could find in catia

 

[krzychub]

If you analyze center of gravity of the surface and mark "Keep measure" then "Create geometry", "Associative geometry", "Center of gravity" then the created point will change when you change the geometry.
Be aware that as a standard the measure doesn't change automaticly. You have to update the measure localy or set "Automatic update in Part" in Tools + Options + General + Paramaters and measure, then "Measure tools" bookmark.

/Krz

 

[itsmyjob]

from wiki : In physics, the word centroid may mean the geometric center of the object's shape, as above; or its physical barycenter, which is its center of mass or the center of gravity, depending on the context. Informally, the barycenter is the average of all points, weighted by the local density or specific weight, respectively.

You can create a point using the f(x) function, select new parameter of type = point (bottom of list)

then add a formula. Use the Point construction / center of gravity then select your PartBody.

When the PartBody changes the point update by itslef.

Eric N.
indocti discant et ament meminisse periti ​

 

[jagodragon]

Thank alot!!! both of you they are both very helpful tips.