Surface into solid and then split it with meshes to create holes

Hello,

I am trying to create a curved tower, with holes in it. Now I have made te curved surface of the tower, by using a loft.

Now I would like that this loft is going to be a solid, after that I would like to split this solid with different geometries to create gaps into the tower, without seeing an empty tower or only a thin skin.

Is there a way to do this? I have put the grasshopper file in the attachment.

The image below shows what form I finally will achieve, three segments of a tower who can rotate apart from eachother. Whit on one side a straight sloping surface, and the rest af the surface is curved.

Is there another way to achieve the same but then in an easier way?

Attachments:

from curved surface to solid.gh, 22 KB

Replies to This Discussion

Permalink Reply by peter fotiadis on February 18, 2015 at 4:42am

OK, I've added something into your def that (maybe) does (part) of what are you looking for.

Unfortunately I don't have it with standard GH components (it's also doable the "trad" way, mind).

This does frames on divided surfaces the fastest possible way (using Trim AND NOT offset on surface: very slow) and (optionally) makes a closed Brep (that's quite slow I'm afraid: no "real-time" capability):

But ... the bad news are that this is a dedicated thing made for dedicated purposes (meaning that it doesn't perforate Breps using any collection of "cutters" - also doable with GH components and/or C#).

Anyway I could do something more "generic" in case that you absolutely need such a thing .

best, Peter

Attachments:

fromcurvedsurfacetosolid_V2.gh, 70 KB

Permalink Reply by Henk_88 on February 18, 2015 at 4:51am

Thanks for your reaction.

I think I wasn't clear about what I want to achieve, I have added a sketch.

In the surface itself there are no gaps. The form is divided into three parts.

Maybe this makes it more clear for you.

It has a straight sloping surface and a curved waved surface melted together.

Permalink Reply by peter fotiadis on February 18, 2015 at 5:32am

Er... I confess that I don't get you: I've applied the C# on your lofted result (what 3 parts??). What means "melted" (Loft did already some "twisted" thing - looks OK to me).

Anyway if you need a 2 step procedure :(a) divide your generic skin "horizontally" (say in 3 "parts") and (b) perforate each one "individually" with a variety of cutters ... the (a) is doable with the C# attached (just play with the U/V values).

(b) begs for another approach as I said (not that simple if "cutters" are many/different and some proper orientation policy is required). And are these "cutters" also parametric? Or are they blocks?

Is this a tower "envelope" right? and you need some closed Breps right? (acting as a "skin") Or you need a Swiss cheese type of result on a solidified Lofted surface collection? (perforated many times by different "cutters")

Permalink Reply by peter fotiadis on February 18, 2015 at 5:40am

Or you need this ... and then do the "parts" and then ... do the drilling?

Permalink Reply by peter fotiadis on February 18, 2015 at 5:59am

or you need this?

Permalink Reply by Henk_88 on February 18, 2015 at 6:01am

The most important thing is that I want to know how I could create a mesh with one sloped surface and then the rest is curved. There don't have to be holes in this surface. I allready have created a mesh which has that waved surface, but now I want to add a straight sloped surface to the mesh. So like the sketch below.

Permalink Reply by peter fotiadis on February 18, 2015 at 6:43am

Finally ... (I do hope, he he):

So this is the thing? (split the solidified Lofted surface - cap planar holes) into N pieces (say: 3) and then call Jack The Ripper (that's me).

PS: I do hope that internalize worked (on the closed Brep: from your tower). If not re sample it into the bad boy (that Geo component, he he).

PS: What have to do meshes with all that talking?

Get this and have fun

Attachments:

Jack_The_Ripper_V1.gh, 170 KB

Permalink Reply by Henk_88 on February 18, 2015 at 7:08am

Thanks a lot! This is almost what I need! The last thing I need is to slice the whole geometry from top to bottom, so a straight sloped surface is created. Like the sketch below. This is the side view of the geometry.

Permalink Reply by peter fotiadis on February 18, 2015 at 8:10am

But that's elementary my dear Watson: after creating the 3 things > chop them against the desired "cutter" (hmm ... some "cutter" rotation control is required here).

I'll prepare a far more capable thing (but not using components: too many options/wires and already I feel some nausea, he he). In fact for the thing that I have in mind it's impossible to use components > you'll see the reason as soon as I'll post the code.

In the mean time, get the trad V2 update that does some stuff more (although not much)

Attachments: