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 CAD / Development / 2822
2821  |  2823
Subject: 
Re: DAT file cleanup tools? or: Zero by any other name
Newsgroups: 
lugnet.cad.dev
Date: 
Tue, 14 Sep 1999 19:23:58 GMT
Viewed: 
377 times
  
In lugnet.cad.dev, Kevin Loch writes:
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

I haven't had any problem with MLcad in this respect. Possibly LeoCAD?


Duane

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 1 Reply:
  Re: DAT file cleanup tools? or: Zero by any other name
 
It is the previous version of ML-Cad that has this presentation of zero when a part has been rotated. In version 1.4, the problem has been fixed. I did point out the problem from version 1.3 in the message: (URL) suggest all upgrade to version 1.4, (...) (25 years ago, 14-Sep-99, to lugnet.cad.dev)

Message is in Reply To:
  Re: DAT file cleanup tools? or: Zero by any other name
 
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 (...) -3.33067e-015 1.10441e-029 32014.DAT (...) (25 years ago, 14-Sep-99, to lugnet.cad.dev)

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