Need urgent help in Grasshopper sphere model

Replies to This Discussion

Permalink Reply by David Rutten on June 18, 2016 at 9:15am

Yeah I wish I could disable the close discussion option.

Permalink Reply by Joseph Oster on June 18, 2016 at 9:31am

In the original thread, David said this:

Also note the spheres on the inside of the box will not boolean. Shapes need to touch in order to be cut.

I wonder if one could get around that by:

1. slicing the box into sections, sized so that spheres always touch a section surface.
2. doing the solid boolean difference ('SDiff') for each section separately.
3. then joining the holed sections together again?

Permalink Reply by David Rutten on June 18, 2016 at 9:57am

A join operation will return an array of breps, so it would break apart the shapes again. Rhino has a lot of fail-safe code to make sure a single brep only ever contains connected pieces. 

Permalink Reply by ram on June 18, 2016 at 10:29am

Sorry joseph. I wrongly closed the discussion and trying algorithm as per David suggestion.Now discussion option been disabled. 

I tried above logic but i doesn't work for cutting sphere inside a box.

Hopefully i will try for slicing box and joining it again.

Permalink Reply by Joseph Oster on June 18, 2016 at 11:20am

I didn't bother to space the spheres to make them non-overlapping as David suggests but this shows that the idea of splitting the box into sections sort of works.  But the 'SUnion (Solid Union)' of the holed sections failed, just as he predicted:

The baked sections render well though, hiding the divisions:

Attachments:

• sphere_holes_2016_Jun18a.gh, 21 KB