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 CAD / LDraw Files / Parts / Primitives / 225
    Re: ring 3 to 5 —Steve Bliss
   (...) Actually, for rounded elements, it's almost always[1] preferable to use primitives. That way, programs that do primitives substitution can replace the polygonal primitive with a true round object. -- Steve 1) 'almost always' meaning, 'I can't (...) (22 years ago, 3-May-02, to lugnet.cad.dat.parts.primitives)
   
        Re: ring 3 to 5 —Larry Pieniazek
     (...) Yes, otherwise you get anomalies like this one: (URL) the outer ring of the tile got high-quality-ified but the fill in (non primitive?) circle didn't, leaving gaps. Also the plate below it, since it has stud cutouts, isn't as "round" as the (...) (22 years ago, 3-May-02, to lugnet.cad.dat.parts.primitives)
   
        Re: ring 3 to 5 —Chris Dee
   (...) There are some complex curved parts (e.g. most of the minifig headwear, the minifig arm I'm working on right now, some wheels) where some regions can be represented by the regular cyli, disc, cyls, cyls2 primitives, but there will be regions (...) (22 years ago, 3-May-02, to lugnet.cad.dat.parts.primitives)
   
        Re: ring 3 to 5 —Steve Bliss
   (...) Very true. In some cases (like the minifig arms), is it better to go with an all-polygon approach, or to use primitives as much as possible and fill in the rest with polygons? (...) When filling in around a hole in a flat surface, one should (...) (22 years ago, 3-May-02, to lugnet.cad.dat.parts.primitives)
   
        Re: ring 3 to 5 —Chris Dee
   (...) have (...) Are you suggesting that there is (should be) a command to prevent primitive substitution, or that the primitive should be inlined? (...) Agreed. What I was more thinking of is the situation (in the minifig arm) where one region is (...) (22 years ago, 4-May-02, to lugnet.cad.dat.parts.primitives)
   
        Re: ring 3 to 5 —Steve Bliss
   (...) I wasn't thinking of either, really. I was wondering if maybe the part should be modeled without any primitives at all. I suppose the practical result of that would be primitive-inlining. (...) In the case of the lower arm (forearm), I don't (...) (22 years ago, 6-May-02, to lugnet.cad.dat.parts.primitives)
 

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