 | | Re: Mirrored parts and studs
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(...) Yes. But I'm not as willing as you are to see files changed, I guess (...) I think mirrored is more of a concern than misrotated, but that's just me. Would this meta work though? In other words, are there any parts that have studs *with logos* (...) (21 years ago, 3-Jul-03, to lugnet.cad.dev)
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| | Re: PARTS.LST searching. (Was: Re: Part Fix 3959 Space Gun)
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In lugnet.cad.dat.parts, Don Heyse wrote: <snip> (...) The PT currently limits you to, I think, 64 characters in the part name. I don't know wht this limit is imposed. I just test LEDIT with a long name and it didn't care. --Orion (21 years ago, 3-Jul-03, to lugnet.cad.dev)
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| | PARTS.LST searching. (Was: Re: Part Fix 3959 Space Gun)
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(...) Right now it seems to be listed on the parts tracker as "Bar 1.5L with Handle and Female Stud". I just added a PARTS.LST search capability to ldglite: (URL) there's nothing in that name that would help me narrow the search to find the part. (...) (21 years ago, 3-Jul-03, to lugnet.cad.dat.parts, lugnet.cad.dev)
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| | Re: Mirrored parts and studs
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(...) A fair point, but how often would that happen, realistically? Enough to be a problem? Even if one or two parts eventually turn up like that, why would the whole system have to be jettisoned for those few exceptions? (...) I'm not sure that (...) (21 years ago, 3-Jul-03, to lugnet.cad.dev)
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| | Re: Thanks to all the parts developers
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(...) I want to join to the thanks... As I have done a few (easy) parts, I know how tedious it can be... And thanks to the hawk-eyed part reviewers, who help to keep standards high ! Philo www.philohome.com (21 years ago, 3-Jul-03, to lugnet.cad.dev)
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| | Re: Thanks to all the parts developers
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(...) I would like to do so as well. It sounds like a lot of work. -Mike (21 years ago, 3-Jul-03, to lugnet.cad.dev)
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| | Re: Thanks to all the parts developers
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(...) Of course I join to part authors praising. Part authors can't be praised enough, especially as new parts quality is so much high. And of course we want Willy Tschager's space parts to be certified and released as soon as possible. Damien (21 years ago, 2-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs
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(...) After thinking about it for a while, I totally agree. If anyone wants to make perfect rendering with stud logos lined up correctly (how often does this occur?), I assume this person must have the knowledge to inline that part locally at (...) (21 years ago, 2-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs
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(...) Correct. There's no way to know if they actually face the right direction, so I just figured that horizontal mirroring was more likely to be correct than vertical (although I could be wrong). (...) You can, but my code that decides which (...) (21 years ago, 2-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs
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(...) Actually that does help a bit. It looks like you aren't concerned with whether the logo faces the same direction as on the actual part, you're just ensuring that it's readable. That makes me feel better about my solution. By the way, why do (...) (21 years ago, 2-Jul-03, to lugnet.cad.dev)
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| | Re: Thanks to all the parts developers
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(...) thx to you kevin for makin' pov-rendering a piece of cake. toying around with all this cryptic pov-code was never easier. w. (waiting to see his space parts certified, especially the crater plate - reviewers please!) (21 years ago, 2-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs
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(...) I don't actually do any transformations in LDView to get the logos right. I just detect the mirroring (by tracking negative determinants and flipping the mirrored bit every time I see one) and modify my texture coordinates to un-mirror (...) (21 years ago, 2-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs
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(...) Yeah, I did a search for determinant and found your note. I tried the on-the-fly fix in ldglite with the L3 structs and it seems to work, although I'm not sure I'm applying the fix correctly. Is it really as simple as multiplying some matrix (...) (21 years ago, 2-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs
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(...) We definitely don't want to do this. It's unnecessary, because the sign of the determinant in the matrix specifying the sub-part tells you whether the sub-part is mirrored. The above might allow the program to do less math, but that's not an (...) (21 years ago, 2-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs
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(...) Yes. That's what LDView does. --Travis Cobbs (21 years ago, 2-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs
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(...) Umm, my math is really rusty. Can the sign of the determinant also be used to detect mirroring? That could be handy. Don (21 years ago, 2-Jul-03, to lugnet.cad.dev)
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| | Thanks to all the parts developers
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I just wanted to say thanks to Steve, Chris and all else that are involved with the developent, review and approval of the parts in the parts library. Programs can come and go, but without the parts library we'd have nothing. I think that the parts (...) (21 years ago, 2-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs
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(...) Wait a minute. Doesn't L3Input.cpp build a threaded tree structure before outputting a single POV part? I would think you could traverse the array Parts[0...nParts] and look for toplevel parts from the PARTS directory. Then for each toplevel (...) (21 years ago, 2-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs
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(...) My view is that there is nothing _serious_ wrong, but that a fix should be welcome. Anyway. Since we are only talking about studs, the rendering programs _could_ simply remember to fix any mirrored studs (can be done by multiplying the (...) (21 years ago, 1-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs
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(...) My only concern about letting the rendering programs do this is "how they know which way to orientate the logo". Coding this within the .dat file (either with a correctly orientated stud.dat or with metadata) is preferable to storing this (...) (21 years ago, 2-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs
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(...) And mine as well. If LDView can correct for this then so can any other program. The stud logos are a bonus feature offered by many programs but are not officailly supported by the LDraw spec. (...) This further supports my position on this (...) (21 years ago, 2-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs
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Just for kicks and grins.(not!) I'll throw in my $1.25 (...) This may have resurfaced because of the studs with logo files on my webpage. It was a quick thought I came up with a couple years ago. I guess I should remove them and any references to (...) (21 years ago, 2-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs
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(...) That is my opinion. The programs should be changed, rather than the parts. One thing to consider: even if we 'fix' all the part files so that all studs render non-mirrored logos, mirrored logos can still occur. For example, if someone created (...) (21 years ago, 2-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs [DAT]
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(...) **snip** (...) Ah, the perennial question. During a past discussion of this very topic I offered what I thought to be a semi-workable option similar to #2 above, which I reiterate in the interest of further stirring the pot: We could redo the (...) (21 years ago, 1-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs
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(...) LDView does not have a problem with mirrored studs. (...) Right! See my posting (URL) Cobbs also explains it well in (URL) 2.) The part itself is flawed in that the studs are mirrored. We should redo (...) Though I acknowledge that L3P should (...) (21 years ago, 1-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs
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(...) I'm not going to comment on the actual question, but I want to make it clear that LDView should NOT display the logo mirrored, ever. It automatically detects that the stud has been mirrored, and mirrors the logo back to its correct (...) (21 years ago, 1-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs
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(...) Good summation. My preference is 1... a sufficiently clever convertor could perhaps detect this rotation and use rotated versions of the studs that it substitutes somehow in a preprocess step??? If there is a way to do 2 (perhaps with a (...) (21 years ago, 1-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs
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(...) Thats what i did with the re-upload of some files from the 2865.dat & 32087.dat parts (9V straight track, 9V track cross ) and the recently posted 2867.dat (9V Curved track). I moved the studs from the subparts to the main file. With the (...) (21 years ago, 1-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs
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I am generally against new meta-commands, but inspired by "0 BFD INVERTNEXT", how about something like "0 MIRRORING KEEPPOSITIVENEXT". The more accurate syntax, I leave to the gurus... /Tore (21 years ago, 1-Jul-03, to lugnet.cad.dev)
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| | Re: Mirrored parts and studs [DAT]
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(...) I favour the following scenario - put the part detail in a subpart, but the studs themselves in the main part files. s\xxxxs01.dat bulk of part excluding decorated surfaces and studs (handedness of lowest numbered part) xxxx.dat 1 0 0 0 1 0 0 (...) (21 years ago, 1-Jul-03, to lugnet.cad.dev)
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| | Mirrored parts and studs
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There is somewhat of a disagreeance going on over at the PT about mirrored parts and I thought I'd bring it to the whole community to discuss. Here's a little background for the non initiated: In order to same time and DAT code if a part has a (...) (21 years ago, 1-Jul-03, to lugnet.cad.dev)
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| | Re: Math questions
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(...) Cool, Thanks. --Orion (21 years ago, 30-Jun-03, to lugnet.cad.dev)
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| | Re: Math questions
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(...) (URL) Also, how about a reference to how to detect bow-tie quad? (URL) that the link inside above posting to L3Input.cpp is dead, please use (URL) much more info on quads, please read (URL) (21 years ago, 30-Jun-03, to lugnet.cad.dev)
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| | Math questions
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Could someone point me toward a good reference on how to extract the angles from a transformation matrix? Also, how about a reference to how to detect bow-tie quad? Thanks in advance, Orion (21 years ago, 29-Jun-03, to lugnet.cad.dev)
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| | Re: "the new way" (was: Re: Self-Certification in parts tracker)
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(...) [snip] I remembered this old post, and thought I'd post a followup. Better late than never. Here is a summary of part updates by year Year Files Updates 1997 128 3 1998 806 10 1999 685 6 2000 376 2 2001 224 3 2002 848 6 2003 81 1 So, based on (...) (21 years ago, 29-Jun-03, to lugnet.cad.dev)
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| | Re: Minifig Generator Plugin for LDDesignPad Version 1.6
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(...) Absolutely no reason that I can think of. Unless a program deliberately wanted to have separate settings (or multiple settings). (...) Good point. (...) Or check both places. :) Steve (21 years ago, 28-Jun-03, to lugnet.cad.dev)
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| | Re: Minifig Generator Plugin for LDDesignPad Version 1.6
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(...) Well, looking at the LDraw.ini, it apppears that we could swap over to using it. -Orion (21 years ago, 27-Jun-03, to lugnet.cad.dev)
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| | Re: portable version of mklist?
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(...) According to my "Sent Items" folder I sent mklist13.zip including both mklist.c and mklist.exe to you at July 3rd, 2000. On your request I resent it to you on May 14th, 2002. And today I'll send it for the third time :-) /Lars (21 years ago, 27-Jun-03, to lugnet.cad.dev)
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| | Re: Minifig Generator Plugin for LDDesignPad Version 1.6
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(...) Hey, I'm with you. ldglite checks the environment variables first, then looks in the <windir>/ldraw.ini file before using a default. env_str = platform_getenv("LDRAWDIR"); if (env_str != NULL) strcpy(pathname, env_str); else if (...) (21 years ago, 27-Jun-03, to lugnet.cad.dev)
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| | Re: Minifig Generator Plugin for LDDesignPad Version 1.6
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(...) Was there some reason that y'all didn't use <windir>\ldraw.ini? If for nothing else, it has the ldraw path. Steve (21 years ago, 27-Jun-03, to lugnet.cad.dev)
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