CAD Development : 2821


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Subject:	Re: DAT file cleanup tools? or: Zero by any other name
Newsgroups:	lugnet.cad.dev
Date:	Tue, 14 Sep 1999 18:43:59 GMT
Viewed:	413 times

They do hurt things. When viewing dat's in ldlite via the web interface parts with exponents do not render. They do render when you load them from a local file however. I think MLcad is generating them. KL In lugnet.cad.dev, Todd Lehman writes: > > Do any of the command-line DAT tools do cleanups on floating-point numbers? > I've noticed lot of lines lately with very-near-zero floating-point numbers, > like these lines, for example... > > > 1 15 40 8 -20 -3.33067e-015 1 -3.33067e-015 0 -3.33067e-015 -1 -1 • -3.33067e-015 1.10441e-029 32014.DAT > > 1 15 -40 8 -20 -3.33067e-015 6.66134e-015 -1 0 -1 -6.66134e-015 -1 • -2.22853e-029 3.33067e-015 32014.DAT > > 1 15 -40 8 -100 -3.33067e-015 -1 0 -3.33067e-015 1.10441e-029 -1 1 • -3.33067e-015 -3.33067e-015 32014.DAT > > 1 15 40 8 -100 -3.33067e-015 1 -3.33067e-015 0 -3.33067e-015 -1 -1 • -3.33067e-015 1.10441e-029 32014.DAT > > ...which certainly don't hurt anything, but they could just as well (and > more cleanly perhaps) be written like this... > > > 1 15 40 8 -20 0 1 0 0 0 -1 -1 0 0 32014.DAT > > 1 15 -40 8 -20 0 0 -1 0 -1 0 -1 0 0 32014.DAT > > 1 15 -40 8 -100 0 -1 0 0 0 -1 1 0 0 32014.DAT > > 1 15 40 8 -100 0 1 0 0 0 -1 -1 0 0 32014.DAT > > Alternatively, a beautifier could also line up columns: > > > 1 15 40 8 -20 0 1 0 0 0 -1 -1 0 0 32014.DAT > > 1 15 -40 8 -20 0 0 -1 0 -1 0 -1 0 0 32014.DAT > > 1 15 -40 8 -100 0 -1 0 0 0 -1 1 0 0 32014.DAT > > 1 15 40 8 -100 0 1 0 0 0 -1 -1 0 0 32014.DAT > > I seem to remember a beautifier being talked about once upon a time... > > Curious, > --Todd > > p.s. http://www.lugnet.com/cad/dev/?n=2819

Message has 2 Replies:

		Re: DAT file cleanup tools? or: Zero by any other name
(...) I haven't had any problem with MLcad in this respect. Possibly LeoCAD? Duane (...) (25 years ago, 14-Sep-99, to lugnet.cad.dev)

		Re: DAT file cleanup tools? or: Zero by any other name
(...) Not in and of themselves, they don't. Only where there's a bug in interpreting them, which there was. (...) Did you read the "p.s."? :-) (...) (25 years ago, 14-Sep-99, to lugnet.cad.dev)

Message is in Reply To:

		DAT file cleanup tools? or: Zero by any other name
Do any of the command-line DAT tools do cleanups on floating-point numbers? I've noticed lot of lines lately with very-near-zero floating-point numbers, like these lines, for example... (...) ...which certainly don't hurt anything, but they could (...) (25 years ago, 14-Sep-99, to lugnet.cad.dev)

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