IRC log for #brlcad on 20150403

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14:10.07 nihar starseeker: What is the command to make a Cobb sphere? Is it the same as "make sphere_name sph" ?
14:26.21 nihar starseeker: please tell me where is the file brep_cobb.g ?
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17:15.45 dracarys983 brlcad, Any suggestions regarding my latest patch submission for adding surface normals support in bot_dump?
17:16.04 brlcad ries: okie :)
17:16.54 brlcad dracarys983: I haven't looked at the patch just yet, but your comment about using a SOLID entity seems unusual to me -- I'm not sure I see where it supported specifying a normal
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17:18.26 dracarys983 brlcad, It supports specifying an extrusion direction. Wouldn't that be the same as specifying a normal?
17:21.46 dracarys983 brlcad, After using a SOLID entity, I got an output like this : http://www.3dvieweronline.com/share/C8ONvnCeRFBJwWo/C8ONvnCeRFBJwWo (For Sphere)
17:23.34 dracarys983 brlcad, Also, whenever possible, please tell me about the details I might've missed out / misunderstood in the RT '06 paper that I read. :)
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17:28.45 brlcad dracarys983: those both look quite wrong...
17:30.20 brlcad an extrusion direction is not at all the same as specifying a normal
17:30.49 brlcad extrusion creates geometry in that direction
17:31.20 brlcad SOLID entities are a closer fit to BRL-CAD's plate-mode BoTs or ARB8s
17:34.21 dracarys983 brlcad, Hm, okay. Sigh, I thought I nailed it this time.
17:35.01 dracarys983 Well, I'll keep looking for the right one. Thanks :)
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17:47.32 dracarys983 brlcad, Would polyface mesh work fine for BoTs?
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17:57.46 brlcad dracarys983: if I knew the answer, I would have immediately pointed you in a direction when you first started working on this
17:58.21 brlcad i don't know if polyface meshes / pface entities have any means to encode per-face normal information
17:58.28 brlcad or per-vertex
18:00.34 dracarys983 brlcad, Yeah. Everywhere I see an extrusion direction supported. Nowhere are they specifying a normal vector, except in LEADER entity.
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19:50.33 sofat i am going to submit another patch on pkg.tr file converted to pkg.xml
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21:26.44 starseeker sweet - https://bitbucket.org/gfx/meshgit-src/src
21:29.06 starseeker that's the code from this work: http://www.cs.dartmouth.edu/~jdenning/papers/meshgit-tr.pdf
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