VB script: CENTROID/CENTER OF GRAVITY?

Hey guyz,

do you know how to write a code for extracting the centroid of brep/surface?

due not having this piece of script, I'm forced to use the AREA component, that generates also the "center". But the cost of this process is enormous - the calculation time of both area and "center" in AREA component takes up 99% of all script time consumption.

I'm begging for a help.. not knowing is killing me!

xSVENx

Replies to This Discussion

Permalink Reply by Hannes Löschke on February 29, 2012 at 3:53am

to calculate the exact centroid involves an integration over the whole surface or volume. This will give you the Area/Volume purely as a by-product.

You can find an approximation by averaging the corner vertices or edge curves. This is how the PolygonCenter works. Imagine two NURBS surfaces with the same trim curve. You can see that this approach will not actually give you the centroid. Away from the edges, the surfaces might deviate from each other in any way you like.

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