convert hull-drawing to dxf

Discussion in 'Software' started by jonnyb, Nov 4, 2007.

  1. jonnyb
    Joined: Apr 2006
    Posts: 15
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Beijing, China (北京,中国)

    jonnyb Junior Member

    hi there.
    Im a novice with CAD, (I use Qcad) and wonder if there exist any program which can make splines from a drawing. This drawing is a 1905 Hull-drawing of a very late model of Colin Archer. (one of his last ones) I started to do the splines by hand but found out that it was not very accurate.
    any clue?

    Attached Files:

  2. Magno
    Joined: Oct 2007
    Posts: 4
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Rio de Janeiro

    Magno New Member

    I do not know if that can be done in Qcad, but in AutoCAD you can put the image file in the drawing, scale it to the correct units and then create the splines needed by following the lines in the image. A lot of people I know do that.
  3. Steve Baer
    Joined: Nov 2006
    Posts: 90
    Likes: 5, Points: 0, Legacy Rep: 64
    Location: Seattle, WA

    Steve Baer Rhino Developer

    Hi Johnnyb,
    Rhino has a command called "BackgroundBitmap" that lets you place a scaled image on your viewport. You can then trace the curves from the image and save the result to a DXF if you want to move the model back into Qcad.
  4. bhnautika
    Joined: Feb 2006
    Posts: 848
    Likes: 55, Points: 38, Legacy Rep: 571
    Location: australia

    bhnautika Senior Member

    jonnyb you can download a free programme called Wintopo, that is a raster to vector converter, that can then be saved in DXF. It’s not a 100% but it’s a pretty good starting point.
  5. wet feet
    Joined: Nov 2004
    Posts: 517
    Likes: 44, Points: 28, Legacy Rep: 124
    Location: East Anglia,England

    wet feet Senior Member

    Congratulations to Jonny for the work he did in Qcad.I spent no more than half an hour exploring Qcad and was very impressed with its capabilities.For those who have never encountered the program,it may be necessary to explain that it operates in Linux and may be of interest because of its cost-nothing.

  6. jonnyb
    Joined: Apr 2006
    Posts: 15
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Beijing, China (北京,中国)

    jonnyb Junior Member

    thanks, correct. im a linux only guy :) i try to use what i find in linux. At least qcad seems to work if you jump from 2d on computer to 3d model live instead :)
    but since my product will end up in real life 3d anyway it seems that 2d is enough for me. Mabye it takes longer time to work with plywood instead on 3d cad-software on computer but i rate my hourly salary to zero since its a hobby. :)
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.