Create a volume encapsulates all the ray lines

[hoang_le]

Hi, I’m completely new to Rhino and Grasshopper, I use Solidworks for work and need to work with rays, but it is extremely slow. I need then to convert all the rays (straight lines) to a minimum volume that encapsulate all these rays. This way the file size would reduce and when I export them back to step files. I was hoping that grasshopper can do that. I was looking at dendro curve to volume but it doesn’t work. Can anyone show me in the right direction?

rays example.3dm (4.0 MB)

[Quan_Li]

convexhull v0.gh (444.1 KB)

Use 3D Convex Hull.

[hoang_le]

thank you for you help, again I’m absolute beginer here.
How can I select the lines from my Rhino window? I try to emty the lines in Grasshopper, and set multiple lines, but I’m unable to select my set of lines

[laurent_delrieu]

Hello
for sure it is not that simple
I advise you to put a Geometry component
Then rick click on the component and select

Then go on Rhino

Select the curve, then Enter

And it will work.
convexhull v0.gh (6.8 KB)

It is a good example of how Grasshopper is not easy for people at the beginning, related to this dicussion

Never used grasshopper

If I cannot reason with an interface, I don’t bother with it. The simplest thing, like an expectation such as: I select an object in Rhino. Open grasshopper. I look for a big huge RED button button that says “do something with this geometry”, but don’t see it. Click around the tabs and nothing jumps out as relevant. I look at the help menu, I see a list of theoretical stuff, like “inputs and “maths”, “interpolating values”, wires” etc. So, I realize I have to spend six months on theory about ho…

[Joseph_Oster]

Your lines are in a block so these are the steps I used:

• In R8 (too bad), select the block of lines and go to ‘Edit | Blocks | Explode Block’
• In Grasshopper, place a Crv param on the canvas
• Select all the lines, right-click the Crv param and choose ‘Set Multiple Curves’

At that point, you have the lines in GH and can do things with them.