Clash Detection Reverse Logic needed

Offline Denis Erlich Fri, May 20 2016 4:18 PM

Hello, Community

I am experienced Autodesk (Navisworks) user, and implementing 3D coordination workflow on large infrastructure project. I use Bentley Navigator.

I noticed that Bentley Navigator does not have ability to do the "reverse" of clash detection - at least in the way how rules are defined.

All the rules are "suppression" rules- Navigator is "tuned" to find clashes only and to weed out false-positives.

Navis is able to use exactly same mechanism of geometry comparison, - but the opposite way - it can suppress identical objects and to report differences in geometry.

hence- "Model Compare" functionality in Navisworks is missing, but I hope it is possible to recreate it using certain combination of rules.

Please, advise if anyone did that already.

Cheers!

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0 Offline Denis Erlich Thu, May 26 2016 8:17 PM

Adding more focused data: clash rules at this point are uneditable templates, using simple logic, but all tuned to detect and suppress "similarities"; if one could be opening the logic expression for :
Suppress clash if one of the clashing elements has <Property Value> NOT equal to <Property Value> on the other clashing element.
so, if someone could be able to explain to me how to set relationship to NOT EQUAL, and 2: which schema retrieves GUID/elementID- that would be my solution! together with
Suppress clashes if one of the elements has the property <Point Property> which is on the line formed by the <Point Property> of the other element, within a tolerance of 3 mm.
will give me only elements that are same by ID but now mislocated from each other (i.e. different).

another check ( in different iteration i presume) will be if every clashing element have a "pair" in the other model, and if not- highlight it
with either "element was there but no longer there" or"element is newly created".
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0 dominic SEAH Thu, Jan 23 2020 2:36 AM in reply to Denis Erlich
bump...
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0 dominic SEAH Sat, Jan 25 2020 5:47 AM in reply to dominic SEAH
Mstn has already got some powerful tools to search for elements based on various criteria... it would be great to be able to hand the results to Clash as a selection?
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0 dominic SEAH Sat, Jan 25 2020 5:47 AM in reply to dominic SEAH
Mstn has already got some powerful tools to search for elements based on various criteria... it would be great to be able to hand the results to Clash as a selection?
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