How do I connect a set of curves?

3D Design Volume Model
1

Hello

I'm new to rhino and CAD in general, here's my problem: I'm working on a project to create 2D plans of buildings from point clouds obtained by laser scan. I do this thanks to the PointCab software which provides me with 2D plans per section but not vectorized. I'm looking to get dxf or dwg plans to then extrude them on rhino (or other software I only have this one for now). On the other hand, for the moment I only get a set of discontinuous vectorized lines as if we had a dashed rectangle for example. So I'm looking for a tool (not necessarily on rhino) that would allow me not to connect the lines two by two, which would take too much time for the process I'm trying to set up, but which would allow me to connect all the lines by reasoning on the closest ends for example. If you ever know of any, it will save me a considerable amount of time and help me a lot!! :)

Here is a photo that illustrates a little bit what I get in red and black, which I would like to have quickly.


Thank you in advance for your help!

2

Hello

Drawing lines from the dots to the ends, it doesn't work?

3

Thank you for your answer, yes of course it works but the idea is to apply this on much more complex plans of buildings and that's why I want an automatic function otherwise it would be like drawing on an image that I could import in the background on rhino for example. The image I published is a simple example to illustrate the problem, but on the plans I deal with, it's much more complex.

4

Depending on the precision sought, one possibility is to create an image file (bmp, jpeg) and have it processed by a vectorization software.

It is the size of the holes between the lines that will be decisive in the quality of the result.

5

What file formats are available? It is indeed easy on various websites to upload PDFs and retrieve vectorized dwg or dxf files that will be usable with rhino, see the software and sites proposed here:

http://www.lynkoa.com/forum/transformer-un-dessin-sous-format-pdf-en-format-autocad

 

6

Stefbeno thank you for your answer, I can export the files in image yes, do you know of any vectorization software that would allow me to connect not by clicking each time on two segments but more by selecting while applying a kind of "connection correction" that would connect the closest segments in the whole shot? That's exactly what I'm looking for.

.PL I already export the files in DXF and DWG and I get what you can see in red: disjoint vectorized segments, my whole problem at this point is to join them automatically without clicking on the segments two by two, to get a continuous outline. Applied to a complex building plan, this allows me to quickly obtain a correct result.

Thank you again for your help.

7

Unfortunately, I don't practice vectorization so I can't formally guide you (there is everything from free to paid).

From what I've seen that will work, there are: Autodesk Raster Design, Inkscape, Autotrace.
The last 2 are "free" so cheap, Raster Design is apparently a big machine (so it is necessarily easy to get to grips with but performance  and stability)

 

 

8

I forgot Adobe Illustrator which has a vectorization module.

I'll put it between Raster Design and Inkscape.

9

I don't know if I'm not answering a little too late... but hey it can be useful,

I often have this kind of situation, thousands of small pieces of lines (or even surfaces) ...

 

On Rhino I simply use the attach function, but you're going to tell me that it doesn't work? In fact if, if we reduce the tolerance: file > property > units > tolerance > "use the value that seems most appropriate to you"

Concretely, if we enter 0.01 for example, Rhino will consider that points less than 0.01 units apart touch each other, so it will be able to join the two curves.

So once we've done that, we select the curves (or ctrl A to select everything) and join