How can i find minimum distance between two holes in a cube?

yadhunedumangal · May 30, 2020, 8:07am

like the above figure i need to find minimum distance between the holes, how to find that?

mahanmotamedi1991 · May 30, 2020, 9:44am

In case if your cylinders are not extruded verticaly, you can slice them into severals sections and calculate the nearest distances between each two corresponding cross sections and take the minumum distance from distances list.

Minimum distances.gh (23.1 KB)

yadhunedumangal · May 30, 2020, 9:59am

Thanks a lot, does it work for multiple holes? Like around 10?

mahanmotamedi1991 · May 30, 2020, 12:59pm

I think the method I proposed is not giving you the right answer for all cases.

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So basically the method I proposed will calculate the distance between curves at each cross-section of objects ( such as d1,d2, and d4). But it fails to calculate distances such as d3 which can be smaller than d4.
So it’s better to simplify the question of how to calculate the minimum distance between two or several objects?
I’m also interested to know if anyone has a clue.

yadhunedumangal · May 30, 2020, 1:03pm

as you can see, i used the same process as you , its only being able to measure distance between 2 holes. i want to measure distance between these 2 holes and 3rd hole. how to do this?

yadhunedumangal · May 30, 2020, 1:09pm

min dis.gh (12.9 KB) this my my file, please do tell me

yadhunedumangal · May 30, 2020, 2:58pm

sir do you have a way?

mahanmotamedi1991 · May 30, 2020, 3:42pm

Hi again. as I said your problem can not be solved by the method of comparing distances of several geometries from a curve. I have made a rudimentary code that can tell you whats the minimum distance between sets of surfaces. For now, it does not tell you where the point is. it’s just telling you the value. if you increase the r-value it gives you a more precise number as result(for sure it will be slower if you increase the r).

[Minimum distances.gh|attachment]Minimum distance between sets of surfaces.gh (4.8 KB)

yadhunedumangal · May 30, 2020, 3:55pm

i am focusing on straight cylinders, and the number of cylinders may vary. it should the distance between all the cylinders taken 2 at a time. how should i do this

mahanmotamedi1991 · May 30, 2020, 3:56pm

you can put as many as cylinders you want in the input. it will tell you the minimum distance. Just make sure your cylinders are surfaces(Not Brep).

yadhunedumangal · May 30, 2020, 4:09pm

in this figure i.m not able to contour the third cylinder too is it not possible?

mahanmotamedi1991 · May 30, 2020, 4:14pm

Please take a close look at what I sent you. it works with surfaces.

yadhunedumangal · May 30, 2020, 4:25pm

its actually top view of a solid. i tried again but, i’m not able to contour the 3rd cylinder

mahanmotamedi1991 · May 30, 2020, 8:08pm

Ok I modified the file a bit. This new file can also tell you from which point the closes distance is happening.

Minimum distance between sets of surfaces_Edited.gh (564.9 KB)

Dani_Abalde · May 30, 2020, 8:38pm

min dis.gh (16.6 KB)

yadhunedumangal · May 31, 2020, 5:17am

is it possible to modify this for 3d solids?

mahanmotamedi1991 · May 31, 2020, 8:48am

I believe this is a complicated question. There must be a mathematical approach such as Line geometry … to this problem.

@DavidRutten can we compute the minimum distance between sets of any kind of geometries?

Dani_Abalde · May 31, 2020, 9:26am

Here you have the naive method
min dis.gh (35.6 KB)

Jen1 · September 8, 2022, 3:35am

That helps a lot, thanks for this sharing to solve my problem.