Re: [brlcad-devel] when bad conversion stats get worse

[Christopher S. M. <br...@ma...>]

Another interesting note, mged aborted 6468 times during those 604069  
conversions.  That's 6.7% of the 15.8% failures.  Of those, more than  
half were in nmg_trap_face()...

    3925 nmg_trap_face
     904 cut_diagonals
     645 nmg_vface
     560 nmg_find_eu_leftvec
     377 nmg_radial_join_eu_NEW
      21 cut_unimonotone
      14 nmg_radial_verify_pointers
      11 nmg_edge_g
       4 nmg_make_faces_within_tol

Great functions to focus attention on.

Cheers!
Sean


On Jan 13, 2011, at 12:08 PM, Christopher Sean Morrison wrote:

>
> So over the past month (32.87 days to be more precise), I've had  
> the conversion script churning through a couple hundred real target  
> models to see how bad things get.  They're considerably worse than  
> the sample geometry (~2%) and preliminary testing (< 7%).  We're  
> seem to be under 15% failure:
>
>    Files:  190
>  Objects:  604069
> Failures:  95595 NMG, 99486 BoT
> NMG conversion:  84.2%  (508474 of 604069 objects)
> BoT conversion:  83.5%  (504583 of 604069 objects)
>   Success rate:  83.9%
>
> That implies real world models have 2x-3x the number of failures  
> than we see with sample geometry. That just further reinforces the  
> need for a complete revamping of the conversion and boolean  
> evaluation process.  Also means that even if we get 100% conversion  
> on sample geometry, that is only a start (albeit a good start).  At  
> best, real world models just have more of the types of geometry  
> that are failing due to their increased complexity.
>
> Going to do another run of just primitives next since they're the  
> lowest level failure that will cascade all the way up the hierarchy  
> (and should be some of the easiest to fix).
>
> Cheers!
> Sean
>
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