#19 Smoth arbitrary surfaces

closed-remind
Sean Morrison
4
2008-01-02
2007-11-17
Scott Hathcock
No

Is there a way in mged to create a solid or hull that is a smooth surface described by a set of points or equations?

Examples that come to mind would be using the offset points for a boat hull, or the table for an airfoil at stations along a wing.

The ars looks kind of like this but it does not appear to be smooth.

Thanks,
Scott

Discussion

  • Sean Morrison
    Sean Morrison
    2007-11-23

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    You're quite right -- the ARS is an "arbitrary faceted solid" so it won't appear smooth. You could, however, create a 'bot' (bag of triangles) which can have their normals smoothed or create an experimental NURBS object with those points on the surface.

    What it sounds like you really want, though, is an object type that we don't yet support. That is, you could create a solid hull surface using a "skin" object or even with a "birail" object. Those two primitive types are on our wish list, but aren't presently being worked on by anyone as far as I know.

    Until those exist, the bot or ars are probably your best approach. You could use the flexibility of the ars and then convert that ars to a smooth bot relatively easily.

     
  • Sean Morrison
    Sean Morrison
    2007-12-18

    • assigned_to: nobody --> brlcad
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    • status: open --> pending-remind
     
  • Sean Morrison
    Sean Morrison
    2007-12-18

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    Scott, did you have any other questions? Please follow-up if you need assistance creating a BoT or if you have any developer interest in working on implementing a skin or birail primitive.

    Cheers!
    Sean

     
    • status: pending-remind --> closed-remind
     
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    This Tracker item was closed automatically by the system. It was
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