tangency circle spline

[teseo]

Bye to all,
I'm breaking my brain, and I'm not going to head it... or I'm losing myself in a glass of water... .
I don't know.
I would like the blue circle to be circumscribed to the inner form (the kind of heart, the dotted area); being spline doesn't take my tangency.
Am I wrong?
I don't know how to locate the two top tangency points that at the bottom there's no problem getting it as I know it's in the middle of the "heart"

thank you all... .
and apologize if it's a pyrlata solution but I don't see it....
Hi.

 

[MassiVonWeizen]

being the spline a unique curve you can give only one tangency.
I can't explode a spline.
Now I don't think of ideas

 

[ragnol]

can't you draw (overlapping) in the upper part of the "heart", to the right and left, of the segments of the curve that recalculate those of the heart?
then you will use the tangency to these two curves as well as the one below.

edit: I have no idea how many curves I pierce your spline

 

[teseo]

thanks for the answers;

I finally used the spider method, but my curiosity was if there is a graphic way to solve the matter, forgive me but these are stratagems, I wanted something mathematician to solve the matter......

for now I have not come to the head.. .
Thanks again

Hi.

 

[Sp4rk0]

hi, in these cases you become crazy with the couplings between curved lines and straight lines, I use sketches as a reference, and a lot of points, I put points where I have to have references or couplings.
at the moment I have not found any other ways, with the tables there is to become crazy.

 

[teseo]

thanks to the answers
Hi.

 

[MassiVonWeizen]

2 macros are reported in this discussion:
aaarearcs.swp
spline to arc.swp

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[MassiVonWeizen]

@teseo Have you tried the macros reported?

 

[teseo]

@teseo Have you tried the macros reported?

I couldn't prove the macros I downloaded and archived them but it's a bit convulsive........stranamente....ciao and thanks to the interest