 | | Problems with Ldraw related sites
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Hello all, Somehow I can't get into www.ldraw.org anymore. when I try I recieve an error message like: Forbidden You don't have permission to access /contact.html on this server. When I use the link from the lugnet.cad.dev.org.ldraw newsgroup page, (...) (25 years ago, 16-Nov-99, to lugnet.cad.dev.org.ldraw)
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| | Is the LDraw parts database free?
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I know that the LDraw software remains the intellectual property of James Jessiman's immediate family. But what about the parts (primitives, parts) database as a whole? Is it the property of James Jessiman's immediate family as well? Or is it free (...) (25 years ago, 16-Nov-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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Steve Bliss wrote in message ... (...) I think it is nice to have the winding state expressed explicitly. IMO part authors should be allowed to whatever winding they find most natural to work with (though you say CCW is desirable). It is perfectly (...) (25 years ago, 15-Nov-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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(...) 0 WINDING (CW|CCW) as the 'certify statement', rather than 0 CLIPPING ON ? Winding is local. Certification is sort-of local -- only the local file is certified, but the local setting affects whether subfiles (in the same reference branch) are (...) (25 years ago, 15-Nov-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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(...) Argh. You are correct, sir. Serves me right, trying to post quickly. Here's a correction: (...) Steve (25 years ago, 15-Nov-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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Steve Bliss wrote in message ... (...) No, WINDING is local! It does not affect subfiles, this is the very reason why we have invented the CLIPPING command. /Lars (25 years ago, 15-Nov-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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Oops! Forget a few important details in the psuedo-code! (...) The last line above should be: (AccumClip and LocalClip and (Winding != UNKNOWN) and Certified), (...) And the line above should be: If AccumClip and LocalClip And Certified Then (...) (25 years ago, 15-Nov-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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Steve Bliss wrote... (...) But it's not used! (...) But it's not used! (...) But it's not used! Why would future extensions use the CERTIFY statement if we don't have a use for it today? I agree WINDING may not directly make you think about BFC, but (...) (25 years ago, 14-Nov-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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Steve Bliss wrote ... (...) I think your pseudo-code delivers a fine evidence why the CERTIFY is unnecessary ;-) /Lars (25 years ago, 13-Nov-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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[ Still discussing (URL) ] Steve: (...) You=anyone (kind of - English is a very imprecise language - "on" in French, "man" in Danish, ...) (...) That depends on how the program is written. You could imagine that the variable "local_clipping" isn't (...) (25 years ago, 13-Nov-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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Steve: (...) I _don't_ think CERTIFY should be dropped, but we might want to change it to "EXTENSIONS", since it is intended for listing which extensions to the LDraw language the file contains. (...) Yes. Play well, Jacob ---...--- -- E-mail: (...) (25 years ago, 13-Nov-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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(...) Did you mean you=Steve or you=anyone? (...) I agree, the sequence should be illegal. My point was, does CERTIFY BFC change the value of the internal local_clipping variable, or not? My intention was that it does not. From a practical (...) (25 years ago, 12-Nov-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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(...) I'd like to hear from other people about this before deciding to keep it or drop it. I'll give my reasons to keep CERTIFY below. But first ... (...) Why not use: 0 CLIPPING (YES|NO) CLIPPING addresses the core issue (can the current file be (...) (25 years ago, 12-Nov-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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(...) OK, I'll change this in the document. Changes from the last few days will be uploaded to GeoCities in the next hour or so. Steve (25 years ago, 12-Nov-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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Steve: (...) [...] (...) ...with the inversion status. (...) Yes. You might want to change "INVERT" to "INVERTNEXT". Play well, Jacob ---...--- -- E-mail: sparre@cats.nbi.dk -- -- Web...: <URL:(URL) -- ---...--- (25 years ago, 11-Nov-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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[ Still discussing (URL) ] Steve: (...) [...] (...) "INVERTNEXT" is good. It makes the effect much more clear. (...) It gets much too messy when you mix the states of a parameter and the setting of that parameter. CERTIFY BFC does imply CLIPPING ON, (...) (25 years ago, 11-Nov-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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I think we should drop the CERTIFY as it is superfluous and apparently adds more confusion than it clarifies! Why not settle for: 0 WINDING (CCW|CW|UNKNOWN) This defines the winding of the following polygons and means that the file is "certified", (...) (25 years ago, 11-Nov-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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Steve Bliss wrote... (...) But it *does* imply CLIPPING ON. Otherwise clipping would be off. Remember, CLIPPING ON cannot turn clipping on if turned off in a superfile. If you render the part alone (just to view the single part) the CERTIFY should (...) (25 years ago, 10-Nov-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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(...) I don't think I understand you here. Do you mean that it is strange to let the user and/or programmer of the rendering program set the initial CLIPPING value? [clipped nice rendering-process tree] (...) It's not too complicated. A rendering (...) (25 years ago, 10-Nov-99, to lugnet.cad.dev)
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| | Re: Line in the Sand
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See (URL) There is a serious weakness in this document, 'certification' is not clearly defined. This definitely needs to be addressed. Currently, the only definition of certification is: (...) ... which is a bit of a typo. My definition of certified (...) (25 years ago, 10-Nov-99, to lugnet.cad.dev)
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