SHATTER curves from both ends

Hello Hello,

I am working on creating node joints for a sculpture, and I thought I had the definition for generating the nodes all figured out . . . I attempted to use the Shatter component and it works but for only 3 of the lines (depending on how the definition is flattened and grafted) but it never works for all the lines . . .

I have attached the gh file I created as well as images of what I am attempting and what I am getting from gh

All help is appreciated,

Images:

what_I_get.jpg

what_I_need.jpg

GH Definition:

shatter_madness.gh

Replies to This Discussion

Permalink Reply by Shridhar Mamidalaa on May 10, 2015 at 2:54pm

Attachments:

shatter_madness.gh, 10 KB

Permalink Reply by Bradley Bowers on May 10, 2015 at 3:22pm

Thank you Shridhar,

Using a solid to split the curves is a good solution! Is there anyway to split these lines with points set a certain distance from their start and end points??? I ask because I want to apply this definition to Voronois as well as triangulations and the spheres will begin to intersect neighboring lines too . . . (image attached)

But if I could split them using just the points and no larger solid geometry then I could avoid these unfortunate intersections . . . at least I hope so!!!!

Attachments:

sphere_overlap.jpg, 716 KB

Permalink Reply by Shridhar Mamidalaa on May 10, 2015 at 3:29pm

Maybe the sphere radius should be logically derived .. like total length/4 or so... evaluating is a good option in that case.

Permalink Reply by Shridhar Mamidalaa on May 10, 2015 at 3:15pm

Permalink Reply by Shridhar Mamidalaa on May 10, 2015 at 3:40pm

Attachments:

shatter_madness.gh, 11 KB

Permalink Reply by Bradley Bowers on May 10, 2015 at 3:58pm

Shridhar,

At first I thought the spheres would be a problem, BUT they actually simplified a lot of other operations I thought I would need!!!

So I took your advice and added a few culls . . . it keeps me from getting super small lengths in between the nodes . . . you'll see what I mean in the definition.

Also how did you get such a nice multi-branched pipe???

Attachments:

node_joints_maybe.gh, 14 KB

Permalink Reply by Shridhar Mamidalaa on May 10, 2015 at 4:03pm

http://www.grasshopper3d.com/group/exoskeleton?xg_source=activity By David Stasiuk

I Have added additional option u can see above.

Permalink Reply by Bradley Bowers on May 10, 2015 at 4:35pm

Shridhar,

It is working really well, a few things I still need to sort out, but you definitely set me on the right path!!!

Thank you!!

Permalink Reply by Bradley Bowers on May 11, 2015 at 7:56pm

Shridhar,

Have you ever seen this before (attached). I am using MeshThicken with a negative value, and it thickens in the proper direction on each mesh except for twelve meshes. It thickens in the opposite, or positive, direction for those particular meshes.

Is there a way to make sure each mesh offsets in the negative direction/inward?

Attachments:

odd_offset.gh, 17 KB
odd_offset.3dm, 195 KB

Permalink Reply by Shridhar Mamidalaa on May 11, 2015 at 8:29pm

Whats the point in meshing nurbs pipe ??? they are already smooth.is there any problem with joints ???

Is it for 3d printing ??? The Nurb pipe radius itself should be calculated first(my suggestion) in case u r running into trouble.

Permalink Reply by Shridhar Mamidalaa on May 11, 2015 at 8:49pm

Permalink Reply by Bradley Bowers on May 11, 2015 at 9:22pm

The issue isn't with the pipes, it is with the nodes that join the pipes. I know it is an issue with the mesh normals, but I don't know how to rebuild them so they all behave the same and thicken in the same direction.

In the first image it shows how the meshes are behaving, 12 of them are thickening in the wrong direction (bright pink)

In the second image it shows the part of the definition that governs the thickening direction, -0.125, they should all thicken inward .125 inches

Attachments: