Boat Design Forums  |  Boat Design Directory  |  Boat Design Gallery  |  Boat Design Book Store  |  Thanks to Our Site Sponsors

Go Back   Boat Design Forums > Design > Software
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 06-26-2007, 03:29 AM
AlexDim AlexDim is offline
Junior Member
 
Join Date: Jun 2007
Rep: 10 Posts: 7
Location: Norway
Rhino - Triangulate 3d points?

Hello. I have a dxf file consisting of points describing a ship hull. (attached).
Is there a way I can triangulate these points in Rhino? My goal is to save out
a file where the hull is saved as a list of triangles.

Please help. thank you

Alex from norway
Attached Files
File Type: dxf hulldef.dxf (362.7 KB, 108 views)
Reply With Quote
  #2  
Old 06-26-2007, 05:47 AM
Tim B Tim B is offline
Senior Member
 
Join Date: Jan 2003
Rep: 794 Posts: 1,407
Location: Southern England
Take your DXF definition, generate a 3D hull surface, export as raw triangles.

Tim B.
__________________
Open Source Marine Charting - openpilot.sourceforge.net
Open Source Vessel Dynamics opendynamics.engineering.selfip.org
Reply With Quote
  #3  
Old 06-26-2007, 06:02 AM
Raggi_Thor's Avatar
Raggi_Thor Raggi_Thor is offline
Nav.arch/Designer/Builder
 
Join Date: Jan 2004
Rep: 696 Posts: 2,457
Location: Trondheim, NORWAY
You could alos look at the Terrain plugin from Sycode.
__________________
Regards, Kvedja, mvh,
Ragnar Thor Mikkelsen
www.MBOATS.no
Reply With Quote
  #4  
Old 06-26-2007, 06:05 AM
AlexDim AlexDim is offline
Junior Member
 
Join Date: Jun 2007
Rep: 10 Posts: 7
Location: Norway
Thanks for quick answer. Is there a simple/quick way to generate the 3d hull surface? I might have to do this on several different files and time is essential. I have looked at lofting, but get problems with the bulb..Is this the right way to go?

thanks again.
Reply With Quote
  #5  
Old 06-26-2007, 06:07 AM
AlexDim AlexDim is offline
Junior Member
 
Join Date: Jun 2007
Rep: 10 Posts: 7
Location: Norway
I have tried the terrain plugin, but is seems to create problems at the bulb..
Reply With Quote
  #6  
Old 06-26-2007, 06:48 AM
AlexDim AlexDim is offline
Junior Member
 
Join Date: Jun 2007
Rep: 10 Posts: 7
Location: Norway
Reduce triangles?

I got the hull into triangles, is there a way to reduce the number of triangles?

thank you
Reply With Quote
  #7  
Old 06-26-2007, 03:09 PM
Tim B Tim B is offline
Senior Member
 
Join Date: Jan 2003
Rep: 794 Posts: 1,407
Location: Southern England
You can use several algorithms once you've got the triangles, but it's easier for everyday work to change the advanced settings when you export in Rhino.

Tim B.
__________________
Open Source Marine Charting - openpilot.sourceforge.net
Open Source Vessel Dynamics opendynamics.engineering.selfip.org
Reply With Quote
  #8  
Old 06-26-2007, 04:03 PM
Steve Baer Steve Baer is offline
Rhino Developer
 
Join Date: Nov 2006
Rep: 64 Posts: 90
Location: Seattle, WA
Is there a specific file format that you are trying to write to? Do you need triangles for rapid prototyping or analysis or something else? Your DXF file looks like you could put some surfaces together pretty quick using lofts, sweeps, and patches. Once you have actual surfaces (not meshes), you can tweak Rhino's mesh settings to get the triangle mesh you want.

Thanks,
-Steve
Reply With Quote
  #9  
Old 07-02-2007, 05:42 AM
Raggi_Thor's Avatar
Raggi_Thor Raggi_Thor is offline
Nav.arch/Designer/Builder
 
Join Date: Jan 2004
Rep: 696 Posts: 2,457
Location: Trondheim, NORWAY
I think you r question now is "how to model the hull from those dxf lines" :-)

Here is one method,
http://www.rhinocentre.nl/pdf_bestan...Rhinoceros.pdf

An other method would be to make the parallel midship as long as possible, then model the bow and merge and match a surface between, then the same in the aft, but maybe with more surfaces because if the propeller housing.

Anyway you choose, the first step is to make new curves, as smooth as possible with as few control points as possible, but as close as you need to the original dxf.
__________________
Regards, Kvedja, mvh,
Ragnar Thor Mikkelsen
www.MBOATS.no
Reply With Quote
  #10  
Old 07-03-2007, 10:16 AM
AlexDim AlexDim is offline
Junior Member
 
Join Date: Jun 2007
Rep: 10 Posts: 7
Location: Norway
thank you
Reply With Quote
  #11  
Old 07-03-2007, 04:57 PM
Raggi_Thor's Avatar
Raggi_Thor Raggi_Thor is offline
Nav.arch/Designer/Builder
 
Join Date: Jan 2004
Rep: 696 Posts: 2,457
Location: Trondheim, NORWAY
Alex, snakker du norsk?
__________________
Regards, Kvedja, mvh,
Ragnar Thor Mikkelsen
www.MBOATS.no
Reply With Quote
  #12  
Old 07-04-2007, 07:47 AM
AlexDim AlexDim is offline
Junior Member
 
Join Date: Jun 2007
Rep: 10 Posts: 7
Location: Norway
jada, her snakkes det norsk
Reply With Quote
Reply



Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Mounting 'rep' points Bergalia Open Discussion: All Things Boats & Boating 15 06-07-2007 06:15 PM
Burnt Points FISHERMAN1 Electrical Systems 8 06-04-2007 07:13 AM
Fitting a Curve to Offsets Points in Rhino CET Software 6 01-04-2006 08:31 AM
points cloud Mirko Software 10 06-25-2005 06:59 AM
Joining points in Prosurf Willallison Software 2 09-09-2002 05:49 PM


All times are GMT -5. The time now is 07:56 AM.


Powered by: vBulletin Copyright ©2000 - 2012, Jelsoft Enterprises Ltd.
Web Site Design and Content Copyright ©1999 - 2012 Boat Design Net