topic Re: Area of Projected sketch - Unable to determine in Fusion Support Forum

Area of Projected sketch - Unable to determine

elio_schenker — Mon, 06 Oct 2025 19:11:12 GMT

Hello, I am unable to find the area of this projected Body. I tried to find the connect all the missing dots but it is still not giving me the area. Am I missing something? Thank you for your help.

Re: Area of Projected sketch - Unable to determine

davebYYPCU — Mon, 06 Oct 2025 23:35:06 GMT

I am unable to find the area of this projected Body.

Not surprising.

Divide and Conquer, draw a temporary line across an area like this bottom right corner. There is a hole in the middle triangle.

Good luck....

Re: Area of Projected sketch - Unable to determine

jeff_strater — Tue, 07 Oct 2025 00:24:01 GMT

I see lots of duplicate geometry in this sketch (splines on top of splines, etc), and a few disconnected endpoints.

By eliminating these in the lower portion of the sketch, and by combining some white dots (no coincident constraint), I was able to get the profile to be partially recognized:

but, I didn't have the time or patience to fix the entire sketch.

I wonder if projecting the whole body is really what you want. This will easily create a lot of "extra" curves from parts of the body which have the same silhouette curve. If I do a projection of the intersection with the body, I get a much better result. Still some issues to be cleaned up, but I was able to make it work:

model is attached (including my half-fixed original sketch)

Re: Area of Projected sketch - Unable to determine

davebYYPCU — Tue, 07 Oct 2025 04:09:06 GMT

Contentious issue is why doesn’t Fusion get it right first up,

should not need to teach anyone, Divide and Conquer!

Must have been one of my first forum questions - Project > Intersect a body and no profile.

(checked - June 2017)

Might help….

Re: Area of Projected sketch - Unable to determine

jeff_strater — Tue, 07 Oct 2025 01:18:04 GMT

@davebYYPCU wrote:

Contentious issue is why doesn’t Fusion get it right first up,

should not need to teach anyone, Divide and Conquer!

Must have been one of my first forum questions - Project > Intersect a body and no profile.

Might help….

well, this is a VERY hard geometry problem to solve. Silhouette edge projection of a complex body can result in a LOT of curves being projected. That said, we are working on this. I expect improvement, but never 100% success.