 | | Re: CW/CCW, vertex sequence, co-planar, convex, (115kB)
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Steve Bliss wrote in message <37f8c86b.239282689@...et.com>... (...) But more often than not, when mirroring an element or subassembly, it's not the intent of the author to turn it inside out. Typical model builders shouldn't concern themselves (...) (25 years ago, 4-Oct-99, to lugnet.cad.dev)
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| | Re: Comprehensive meta-command list
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Paul Gyugyi wrote in message <37F8CE0C.13D582C9@g...yi.com>... (...) Cool! This could be very handy. I'll add it to the DAT format page I'm writing. -Gary (25 years ago, 4-Oct-99, to lugnet.cad.dev)
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| | Re: Comprehensive meta-command list
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Lars C. Hassing wrote in message <939050465.592693@ns.cci.dk>... (...) True. But when manually examining a file, if you come across a 0 INVERT you wouldn't know whether this was the beginning or the end of the inverted references, without a bit of (...) (25 years ago, 4-Oct-99, to lugnet.cad.dev)
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| | Re: CW/CCW, vertex sequence, co-planar, convex [DAT]
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It seems to me that there are two major "camps" in the CW/CCW debate. A. Face-by-Face Method This method suggests that CW-ness be ultimately evaluated on a face-by-face basis. Each quad in a primitive or part would hold a value of CW,CCW, or (...) (25 years ago, 4-Oct-99, to lugnet.cad.dev)
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| | Re: Comprehensive meta-command list
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(...) True. '0 INVERT END' may be allowed as a syntactic convenience to authors. Or 0 INVERT could be rewritten as 0 INVERT [ON|OFF|TOGGLE] where TOGGLE would be the default action. (...) [example snipped] 0 INVERT is different from 0 FACE [CW|CCW] (...) (25 years ago, 4-Oct-99, to lugnet.cad.dev)
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| | Re: Comprehensive meta-command list
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(...) Hooray! :) (...) Hooray! :) Steve (25 years ago, 4-Oct-99, to lugnet.cad.dev)
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| | Re: CW/CCW, vertex sequence, co-planar, convex, (115kB)
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Jacob: (...) Steve: (...) Jacob: (...) It happens every once in awhile. Actually, which approach *would* be better? Examining the transformation matrix to determine the state of inversion, and adjusting the CW/CCW setting to correct for it, would (...) (25 years ago, 4-Oct-99, to lugnet.cad.dev)
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| | Re: Interpreting the proposed FACE meta-command
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(...) Recognizing multiple forms of the command shouldn't add much to rendering. Each file can be parsed once, and then the post-parsing results cached, for later re-reference. The FACE meta-command would be stored as an opcode and a single (...) (25 years ago, 4-Oct-99, to lugnet.cad.dev)
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| | Re: Hidden surface removal, and vertex order in part/primitive DAT files [DAT]
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(...) Forgot the footnote: 1- There's an interesting distinction between 'valid' and 'well-formed' contructions. LDraw will allow line-breaks as whitespace in commands, so: 1 16 0 0 0 1 0 0 0 1 0 0 0 1 3001.dat is valid, but it's not well-formed. (...) (25 years ago, 4-Oct-99, to lugnet.cad.dev)
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| | Re: Comprehensive meta-command list
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Steve: (...) Yes. (...) Yes. Play well, Jacob ---...--- -- E-mail: sparre@cats.nbi.dk -- -- Web...: <URL:(URL) -- ---...--- (25 years ago, 4-Oct-99, to lugnet.cad.dev)
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