What exactly is going on when computing implicit joint origins?

[tookemtoni]

Hi, I am curious....

What exactly is going on when Fusion is computing "implicit joint origins"? 

It seems to take up some compute time....well at least I notice it more in the green compute all status bar.

[mufuo]

It's probably pulling the joints of the file you opened. I don't think it's a major problem, or rather I don't think it's a problem at all.

[TrippyLighting · Accepted solution]

If you have a design that appears to be ":slow" my recommendation would be to share it. The Fusion 360 team is working hard on improving assembly performance and have made quite some progress.

I have shared a number of "slow" assembly design designs with the Fusion 360 team and they have made significant improvements in some areas.

[jeff_strater · Accepted solution]

I've noticed that that progress bar can sometimes be a bit misleading.  What feature is before that implicit joint origin?  My guess is that it might be something expensive, and the progress bar has incorrectly changed its display to the next feature.

To answer the specific question:  An implicit joint origin is no different from a regular joint origin.  That is just the name that is given to hidden joint origin that is created if you just pick geometry during the Joint command.  Behind the scenes a joint origin is created.  The compute of that should be fast.  All it does is resolve the geometric reference.

To find out which features are expensive, in the text command window, type:  "Fusion.DumpFeaturesByComputeTime".  This will list out all the features, sorted by the amount of time it takes to compute that feature.