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(...) Sorry, I should have said "Don's pseudo-code". ;) (...) I don't know - I'm replying via the web interface, posting with plain text. (20 years ago, 24-Jun-04, to lugnet.cad)
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| | Re: Quick way to mirror-image a model?
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(...) Uh, I thought we were refering to it as "Steve's algorithm". Are you having 2nd thoughts? ;^) Enjoy, Don PS. Why am I constantly seeing really long lines in the browser for this thread. It makes things really hard to read when I have to scroll (...) (20 years ago, 24-Jun-04, to lugnet.cad)
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| | Re: Quick way to mirror-image a model?
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Oops, I missed replying to one point. (...) If you mean (-1 0 0 0 1 0 0 0 1) as the 'default' matrix, my response is: that default matrix works for *any* reflection across any arbitrary plane. If you mean (-1 0 0 0 1 0 0 0 1) as the reflection (...) (20 years ago, 24-Jun-04, to lugnet.cad)
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| | Re: Quick way to mirror-image a model?
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(...) Well, yeah. But it's simpler to process it all -- the only exceptional processing you need is "look for the part in mirror.ini. If not found, use the default settings". With your method, you have to also add "if the matrix looks like MD, then (...) (20 years ago, 24-Jun-04, to lugnet.cad)
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| | Re: Developing MLCAD plugins?
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(...) While you're checking, think about this. What if the MLCad generators were reconfigured as some sort of plugins, and the plugin specs were documented? Then everyone could use your generators. You know, weird people like me who are frightened (...) (20 years ago, 24-Jun-04, to lugnet.cad, lugnet.cad.mlcad)
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| | *** Specification 2.0 of MLCad Extensions ***
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Hi, this can be downloaded from the developer section on (URL) you will also find the new language templates for MLCad V3.10 Best regards, Michael (20 years ago, 24-Jun-04, to lugnet.cad.mlcad)
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| | Re: Developing MLCAD plugins?
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Done, "Don Heyse" <dheyse@hotmail.spam....away.com> schrieb im Newsbeitrag news:Hzrprv.14sB@lugnet.com... <SNIP> (...) No sorry, MLCad does not support plugins yet, currently I have a very quick way introducing new generators and pseudo commands by (...) (20 years ago, 24-Jun-04, to lugnet.cad, lugnet.cad.mlcad)
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| | Re: Quick way to mirror-image a model?
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Hi Don, now it's getting interesting ... "Don Heyse" <dheyse@hotmail.spam....away.com> schrieb im Newsbeitrag news:HzrwBF.9t2@lugnet.com... <SNIP> (...) I'm actually reading it in as | a b c | | d e f | | g h i | and that is also how I'm writing my (...) (20 years ago, 24-Jun-04, to lugnet.cad, lugnet.cad.mlcad)
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| | Re: Quick way to mirror-image a model?
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(...) Sure, but you still haven't convinced me there's any difference between a 2x2 brick and a 2x2 slope brick. I must be getting senile in my old age, because I just don't get it. Anyhow, use 55 if it makes you happy. We'll figure out what to do (...) (20 years ago, 24-Jun-04, to lugnet.cad)
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| | Looking for .dat for 1x2 tile with MONEY pattern
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Desperately in need of the mlcad dat file for this part: (URL) thought I'd ask the talented part makers here for some help. I would be eternally thankful! :) Thanks, Corey www.brickitgood.com (20 years ago, 24-Jun-04, to lugnet.cad.dat.parts)
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| | Re: Quick way to mirror-image a model?
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(...) IMO there *is* value to knowing that the proper exception matrix is indeed an exception rather than coincidentally the same as the default matrix. If the 5 is not the place for this, there should be a new flag for it. It's especially important (...) (20 years ago, 24-Jun-04, to lugnet.cad)
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| | Re: Quick way to mirror-image a model?
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(...) Why process something as an exception when the default behavior is needed? It's all in what one sees as extra, unneeded code. ;-) Though I just did some timing and I don't see any performance differences between ignoring them and not. (...) (...) (20 years ago, 24-Jun-04, to lugnet.cad)
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| | Re: Quick way to mirror-image a model?
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(...) I don't think so. 5 is for keeping track of which parts we've looked at, not which ones to ignore when your run your mirror program. Eventually I think we'll remove all the ones marked with a 5 from the MIRROR.INI file. (And that includes the (...) (20 years ago, 24-Jun-04, to lugnet.cad)
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| | Re: Quick way to mirror-image a model?
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(...) Why? I have a slow PC, and running the mirwiz.exe program is nearly instantaneous. It's a lookup and 2 matrix multiplies per part. If the exception matrix lookup fails, use the default matrix. It would take extra, unneeded code to ignore (...) (20 years ago, 24-Jun-04, to lugnet.cad)
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| | Re: Quick way to mirror-image a model?
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(...) Never mind. 5 would be the correct value for this, right? (20 years ago, 24-Jun-04, to lugnet.cad)
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| | Re: Quick way to mirror-image a model?
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What about a flag for default behavior? I've been coding to ignore ones with default rotations, but there are plenty of parts (especially slopes) that need a (-1 0 0 0 1 0 0 0 1) rotation applied when reflected front-to-back and it would be nice to (...) (20 years ago, 24-Jun-04, to lugnet.cad)
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| | Re: Quick way to mirror-image a model?
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(...) Total side note: I agree with Don, row/column ordering is not what I would have chosen. BUT, it is far easier (IMO) to hand-transform row/column LDraw commands than the equivalent column/row commands (like I've had to do in POV-Ray code). (...) (20 years ago, 23-Jun-04, to lugnet.cad, lugnet.cad.mlcad)
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| | Re: Mac Brick CAD 2.3b2 (critical bug)
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Following my release of MBC 2.3b2 the other day, I've been notified of a critical crash bug in the editor, where inserting parts will cause the application to crash. I've now posted an update Mac Brick CAD 2.3b3 that fixes this. If you have (...) (20 years ago, 23-Jun-04, to lugnet.cad.dev.mac)
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| | Re: Quick way to mirror-image a model?
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(...) Yes, that looks right. The other thing that messes me up with LDRAW matrices is the row, column ordering. The ordering in LDRAW files is not what I would have chosen, so I always have to look it up. From the old FAQ: (URL) type 1's format is: (...) (20 years ago, 23-Jun-04, to lugnet.cad, lugnet.cad.mlcad)
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| | Re: Quick way to mirror-image a model?
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(...) It's neither commutative [(a * b) * c != a * (b * c)] nor associative [a * b != b * a]. That shouldn't be the problem in the calculation above, since the current matrix was the identity matrix... (...) Looks like you're doing MF = MP * (MC * (...) (20 years ago, 23-Jun-04, to lugnet.cad)
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