DelftShip - Chine Import

Discussion in 'Software' started by rwatson, Sep 18, 2010.

  1. rwatson
    Joined: Aug 2007
    Posts: 5,875
    Likes: 311, Points: 83, Legacy Rep: 1749
    Location: Tasmania,Australia

    rwatson Senior Member

    Hi all

    I thought I had won lotto when I found that my free copy of Delftship had a "chine import" function to create a hull design by importing chine offsets.

    I have plans for a boxy houseboat, with about 8 stations, and only three chines.

    I read in a text file for the bow and transom frames only, with these settings

    0

    0 0 0
    0 1.051 .048
    0 1.114 1.12

    8 0 .466
    8 .766 .675
    8 .871 1.387

    EOF

    This file has only two of the 8 stations (bow and transom) to start with.
    The first line, 0 means "metres"

    The next line, 0 0 0 means that the first point on the frame is located at position 0 on the X (length) axis, at point 0 on the Y (width) axis, and point 0 on the Z (height) axis.

    The next line (chine) means at point 0 (length) , the point is 1.051 Y wide, and .048 Z tall
    The next line (gunnel) means at point 0 (length) , the point is 1.114 Y wide, and 1.12 Z tall

    This should make a boxy transom with a small chine - but if you look in the attached outcome illustration, it created something totally different.

    The bow transom looks fine.

    If anyone can figure out what is going wrong, I would appreciate any help.
     

    Attached Files:

  2. Martijn_vE
    Joined: Apr 2005
    Posts: 254
    Likes: 24, Points: 0, Legacy Rep: 401
    Location: Netherlands

    Martijn_vE Marine software developer

    Looks like you've used the wrong import routine (Import surface rather than import chines).
    While looking at your data I noticed both "chines" are defined at a constant x location, so in fact they are stations. Chines should be defined running from the back to the front.
     
    1 person likes this.
  3. Martijn_vE
    Joined: Apr 2005
    Posts: 254
    Likes: 24, Points: 0, Legacy Rep: 401
    Location: Netherlands

    Martijn_vE Marine software developer

    By the way, your file toolbar seems to be missing. Is that on purpose?
     

  4. rwatson
    Joined: Aug 2007
    Posts: 5,875
    Likes: 311, Points: 83, Legacy Rep: 1749
    Location: Tasmania,Australia

    rwatson Senior Member

    Thanks for the hint there Martijn.

    I double checked the import option I used, and no, I did select "import Chines" originally.

    Also, yes, they are stations, as I mentioned in the post, ( and yes, I did turn off the Files Toolbar)

    But, I did get a hint from your helpfull reply, and re-ordered the sequence of the commands to create three chines, rather than stations.

    0

    0 0 0
    8 0 .466

    0 1.051 .048
    8 .766 .675

    0 1.114 1.12
    8 .871 1.387

    EOF

    This did help, and gave me exactly what I wanted ( see attached)

    Thanks a lot for the pointer - it looks like the this function is going to work for me.
     

    Attached Files:

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