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ENH: add alternative STL ASCII parsers

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- In addition to the traditional Flex-based parser, added a Ragel-based
  parser and a handwritten one.

  Some representative timings for reading 5874387 points (1958129 tris):

      Flex   Ragel   Manual
      5.2s   4.8s    6.7s         total reading time
      3.8s   3.4s    5.3s         without point merging
This commit is contained in:
Mark Olesen
2018-04-16 10:20:45 +02:00
parent a8da75d27e
commit ea71484efa
21 changed files with 3373 additions and 193 deletions
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4
src/fileFormats/Make/files
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@ -12,7 +12,9 @@ fire/FIRECore.C
starcd/STARCDCore.C
stl/STLCore.C
stl/STLReader.C
stl/STLReaderASCII.L
stl/STLAsciiParseFlex.L
stl/STLAsciiParseManual.C
stl/STLAsciiParseRagel.C
vtk/core/foamVtkCore.C
vtk/core/foamVtkPTraits.C