 | | Re: calc_z4.c (Was: Math Problem Again)
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In lugnet.cad.dev, Timothy Gould wrote: // calc_z4 by Tore Eriksson // credits to Ronan Webb for the superb formula double calc_z4(double x1,double y1,double z1, double x2,double y2,double z2, double x3,double y3,double z3, double x4,double y4) { (...) (15 years ago, 23-Oct-09, to lugnet.cad.dev)
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| | Re: calc_z4.c (Was: Math Problem Again)
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(...) You also need a touch of code to catch when c=0 so that z4 is undefined ;) Tim (15 years ago, 23-Oct-09, to lugnet.cad.dev)
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| | calc_z4.c (Was: Math Problem Again)
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(...) Sorry guys, just wanted to store this function in a safer place than my hard drive. :) I just don't want to remake it again...! Feel free to copy/paste/edit/port if you need it! /Tore // calc_z4 by Tore Eriksson // credits to Ronan Webb for (...) (15 years ago, 22-Oct-09, to lugnet.cad.dev)
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| | Re: Peeron_to_MLCad
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(...) Hi Il'dar Ismagilov I'm sorry but I haven't received an email from you or I have cancelled it involuntarily. I have tested again Peroon_to_Mlcad with Internet Explorer 8.0 and Mozilla Fireworks 3.5 and there are no problems for me. Contact me (...) (15 years ago, 17-Oct-09, to lugnet.cad.dev)
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| | Re: Peeron_to_MLCad
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(...) This program is interesting for me. But It does not work correctly now. I think the reason is that Peeron's html code has changed and a Peeron2MLCAD's parser needs an update. I have an universal parser from my another program and I prefer to (...) (15 years ago, 17-Oct-09, to lugnet.cad.dev)
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| | Re: reference for program author
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In lugnet.cad.dev, Michael Heidemann wrote: -- snip -- (...) That sounds like a perfect task for somewhere on the wiki. That way information can be kept up-to-date whenever new discussions take place. (URL) created a quick article start for people (...) (15 years ago, 6-Oct-09, to lugnet.cad.dev)
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| | reference for program author
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Many times during developing DATHeader I had questions that I tried to solve by searching in LUGNET posts and reading the documentation on LDraw.org. Often I had to make my own decision how to handle that problem. For example: Reading files with (...) (15 years ago, 5-Oct-09, to lugnet.cad.dev)
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| | Re: Technic Axle Joiner / Cross Block descriptions
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(...) Correction: 44489.dat should be 44809.dat Technic Cross Block 2 x 2 Bent 90 (Pin/Pin/Pin) Chris (15 years ago, 4-Sep-09, to lugnet.cad.dev)
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| | Re: Technic Axle Joiner / Cross Block descriptions
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(...) Thank you for all the comments on this (including those that veered off-topic). I like the "Cross Block" designation, especially as this is a common theme in the LEGO descriptions. It has the added benefit that it is shorter than "Joiner (...) (15 years ago, 3-Sep-09, to lugnet.cad.dev)
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| | Re: Technic Axle Joiner / Cross Block descriptions
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(...) Alright, that's cool...but how exactly would you suggest making the distinction between the three different 1x3 saddle joints? Perhaps like this: (...) And then you just need to assume that everyone knows exactly which order in which these (...) (15 years ago, 28-Jul-09, to lugnet.cad.dev)
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| | Re: Technic Axle Joiner / Cross Block descriptions
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(...) "cheese wedge". It won't come up as "slope grille" either, while Peeron produces seven different parts that merely include those words at various points in their descriptions. Sorry, but their search engine verges on being an excellent cure (...) (15 years ago, 28-Jul-09, to lugnet.cad.dev)
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| | Re: Technic Axle Joiner / Cross Block descriptions
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(...) I'd be for dimensions but not the hole sequence.. the hole sequence goes into redundancies IMHO. So for example I'd like 6536.dat to be "Technic Axle Joiner Perpendicular 1 x 2". (15 years ago, 28-Jul-09, to lugnet.cad.dev)
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| | Re: Technic Axle Joiner / Cross Block descriptions
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(...) LEGO database? To those who work for them, their part description may not be as optional as ours. However, that doesn't mean that we should make emotional choices. I worship TLG as much as the next AFOL, but we already know they don't put (...) (15 years ago, 28-Jul-09, to lugnet.cad.dev)
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| | Re: Technic Axle Joiner / Cross Block descriptions
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(...) I agree with Philo, would remove the Axle/Pin qualifier in front and go for example with "Technic Joiner Perpendicular 1 x 2 (Axle/Pin)" w. (15 years ago, 28-Jul-09, to lugnet.cad.dev)
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| | Re: Technic Axle Joiner / Cross Block descriptions
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(...) The LEGO database lists the following names: 6536 CROSS BLOCK 90° 32184 DOUBLE CROSS BLOCK 32068 TECHNIC STEERING-GEAR 3M 32291 TECHNIC CROSS BLOCK 2X4,85 41678 TECHNIC CROSS BLOCK/FORK 2X2 42003 CROSS BLOCK 3M 32557 TECHNIC CROSSBLOCK 2X3 I (...) (15 years ago, 28-Jul-09, to lugnet.cad.dev)
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| | Re: Technic Axle Joiner / Cross Block descriptions
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(...) Good thing number of Ldraw members has nothing to do with number of Ldraw users :) While I agree it would be nice if the two sources matched, unfortunately they serve totally different purposes, and that is unlikely to ever happen. BL has (...) (15 years ago, 28-Jul-09, to lugnet.cad.dev)
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| | Re: Technic Axle Joiner / Cross Block descriptions
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(...) So then, we shall say the same? Both us and BL have long-lived and complicated systems. I never really expected you or DATHeader to instantly change your way of life, but I believe that it is time to consider subtle changes to help bring our (...) (15 years ago, 28-Jul-09, to lugnet.cad.dev)
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| | Re: Technic Axle Joiner / Cross Block descriptions
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(...) Not to point fingers or start a flame war but as I recall everytime anyone has suggested that Bricklink change to conform to some other standard, it has been rebuffed by the BL admins. This lack of willingness to compromise has, at least in (...) (15 years ago, 27-Jul-09, to lugnet.cad.dev)
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| | Re: Technic Axle Joiner / Cross Block descriptions
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(...) Good thing you don't have to agree for the statement to still be true. Ldraw has just over 3 thousand members. BrickLink has nearly 110 thousand. Peeron is great for the one resource that it is most used for - historical instructions on LEGO (...) (15 years ago, 27-Jul-09, to lugnet.cad.dev)
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| | Re: Technic Axle Joiner / Cross Block descriptions
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(...) None of those parts should really be referred to as "axle joiners" or "pin joiners". The only parts that should have those names are the ones that join them end-to-end. These parts are all what a hardware store would recognize as a saddle (...) (15 years ago, 27-Jul-09, to lugnet.cad.dev)
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| | Re: Technic Axle Joiner / Cross Block descriptions
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(...) See, right there I couldn't agree with you less. I spend a lot more time producing a design in LDraw than I do plugging the parts list into Bricklink, and when I'm doing so I generally have to stick to part numbers rather than descriptions (...) (15 years ago, 27-Jul-09, to lugnet.cad.dev)
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| | Re: Technic Axle Joiner / Cross Block descriptions
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Most of you know my opinion on this one - use BrickLink names. Our community is dispursed enough. We need to work to unify what we can. BrickLink names are the most widely used amongst the community. After all, how many people convert their LDraw (...) (15 years ago, 24-Jul-09, to lugnet.cad.dev)
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| | Re: Technic Axle Joiner / Cross Block descriptions
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(...) I agree it is time to rationalize naming of this similar parts... I would go one step further and name all of them "Technic Joiner Perpendicular xxxx" since hole type sequence is described in the end of name, and a 6536.dat Technic Axle Joiner (...) (15 years ago, 23-Jul-09, to lugnet.cad.dev)
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| | Technic Axle Joiner / Cross Block descriptions
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With almost all the "Technic Axle Joiner" parts on the Parts Tracker, I'd like to take the opportunity to rationalise the part descriptions which have developed over time as these parts have appeared. Currently we have: 6536.dat Technic Axle Joiner (...) (15 years ago, 22-Jul-09, to lugnet.cad.dev)
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| | DATHeader version 2.0.5 (The Reviewer Tool)
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DATHeader is on the way not only to assist in getting a proper header for official DAT-files but also it is now a very useful tool for reviewers. You will have a listing of all tests with OK or ERROR message. Please note that not all errors that (...) (15 years ago, 9-Jun-09, to lugnet.cad.dev, lugnet.announce, lugnet.cad)
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| | Re: LDraw.exe removed from distribution?
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(...) =( I delete them as well and I think that the current *old* AIOI also does not have them. Need to check.. -AHui (15 years ago, 4-Jun-09, to lugnet.cad.dev)
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| | Re: LDraw.exe removed from distribution?
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(...) I don't know if you're the only one who does this, but doing so will also cause LDView's library update to fail, since those notes are the only files that allow LDView to know what has been installed. --Travis (15 years ago, 2-Jun-09, to lugnet.cad.dev)
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| | Re: LDraw.exe removed from distribution?
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(...) I usually delete these notes so I'm not sure checking for them would be correct (unless I'm the only one who does this). -Orion (15 years ago, 2-Jun-09, to lugnet.cad.dev)
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| | Re: LDraw.exe removed from distribution?
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(...) A good way would be to check for the presence of note*.txt files in the models directory. These show which updates have been installed. Prior to 2008-01 ths naming convention was NOTEyyrr.TXT, but now it is NOTEyyrrCA.TXT where yy is the (...) (15 years ago, 1-Jun-09, to lugnet.cad.dev)
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| | Re: LDraw.exe removed from distribution?
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(...) Thanks, I think I'll check for the parts and p directories to determine if it's any kind of library, and issue a warning if ldconfig.ldr is missing when the official library is expected. ps: Sorry I responded slow, I'm having troubles posting (...) (15 years ago, 1-Jun-09, to lugnet.cad.dev)
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| | DATHeader version 2.0.4 for WINDOWS, LINUX and MAC
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And here is the next release of DATHeader. The following happend: 1) Some more adjustments to recognize part type correctly 2) If EDIT commands used the current file will be unloaded. 3) Notify about wrong colors now without separate messages 4) (...) (15 years ago, 31-May-09, to lugnet.cad.dev, lugnet.announce, lugnet.cad)
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| | Re: DATHeader NEW as .NET application (version 2.0.1)
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(...) I use it sometimes in the middle of part design to make sure I have a valid part header and be able to get smooth shading with LDView. Philo (15 years ago, 29-May-09, to lugnet.cad.dev)
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| | Re: LDraw.exe removed from distribution?
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(...) I'd go with ldconfig.ldr. LDraw.exe is now legacy software (and is in fact not complaint with the current spec). Since ldconfig.ldr is per spec where color are defined, it should always be present in a 100% complaint distro. -Orion (15 years ago, 29-May-09, to lugnet.cad.dev)
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| | Re: DATHeader NEW as .NET application (version 2.0.1)
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(...) If I would make the "Old Header" and "New Header" larger it would not fit good to smaller desktops. I am thinking of make to whole window able to maximise. That would then help both of us. At present DATHeader is designed to output a file that (...) (15 years ago, 28-May-09, to lugnet.cad.dev)
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| | Re: DATHeader NEW as .NET application (version 2.0.1)
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Hello, I would like to have larger components "Old Header" and "New Header". Often the header does not fit to them and you have to scroll down both lists. And, please, make replacing "0" comments by "0 //" as option. This feature kill mlcad hide (...) (15 years ago, 28-May-09, to lugnet.cad.dev)
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| | LDraw.exe removed from distribution?
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Hello all, I just downloaded the complete.zip and discovered LDraw.exe is no longer present. I take this is a step in creating the 100% CA distro? Anyhow, I always used LDraw.exe to validate (in LD4DStudio) if a folder is indeed the library's root. (...) (15 years ago, 28-May-09, to lugnet.cad.dev)
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| | Re: DATHeader version 2.0.3 for LINUX and MAC
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(...) I have just found an error in DATHeader. The test for partdescription at subparts was not correct. Please download the bugfix from (URL) that side I have now also listed all tests that are performed by DATHeader and also the specification on (...) (15 years ago, 24-May-09, to lugnet.cad.dev, lugnet.announce, lugnet.cad)
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| | Re: DATHeader NEW as .NET application (version 2.0.1)
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(...) Mike, I get a error on startup complaining about the xml file. I would also appriciate if you could add documentation for the new features (especially for the spaces in the title) explaining how it works and what's all about. Also some links (...) (15 years ago, 23-May-09, to lugnet.cad.dev)
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| | DATHeader version 2.0.3 for LINUX and MAC
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I am proud to announce the release of DATHeader for the use on Linux and Mac machines. Windows machines are supported anyway. New feature in this version is the reviewer mode. You do not need to save the file to get the informations that DATHeader (...) (15 years ago, 23-May-09, to lugnet.cad.dev, lugnet.announce, lugnet.cad)
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| | Re: DATHeader NEW as .NET application (version 2.0.1)
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(...) I have just tested the changed DATHeader also on UBUNTU/Linux with MONO. IT WORKS!!! Now as I have realized that there are differences between some functions that do the same on windows enviroment, but totally different on linux machines I am (...) (15 years ago, 18-May-09, to lugnet.cad.dev)
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| | Re: DATHeader NEW as .NET application (version 2.0.1)
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(...) I have now found what happend. I use under windows the following code for a messagebox that gives an result back: answer = msgbox() But this does not work under MONO. Here I have to use: answer = messagebox.show(). So I have to check the (...) (15 years ago, 18-May-09, to lugnet.cad.dev)
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| | Re: DATHeader NEW as .NET application (version 2.0.1)
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(...) At present I have no idea why color and rotation is not removed, but I will investigate. I did not checked the hand for being under MONO or not, only the function itself as I have detected trouble with that function under MONO. cu mikeheide (15 years ago, 17-May-09, to lugnet.cad.dev)
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| | Re: DATHeader NEW as .NET application (version 2.0.1)
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(...) Thank you very much for your respond. As I noted before I have done some checks with MONO, but under windows enviroment. Now that I have your feedback I will try to eliminate those errors. As my UBUNTU (in a virtual box) does not run DATHeader (...) (15 years ago, 17-May-09, to lugnet.cad.dev)
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| | Re: DATHeader NEW as .NET application (version 2.0.1)
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More (again on MONO): - Maybe turn the Option menu into a single Preferences button (like the ? button)? - Edit -> License Types -> Close closes DATHeader. Same for BFC Statements and Part Types - Edit -> Category brings up the popup box which asks (...) (15 years ago, 17-May-09, to lugnet.cad.dev)
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| | Re: DATHeader NEW as .NET application (version 2.0.1)
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(...) Great job! Maybe one of the tools evolves so much that it becomes an all-in-one checker. :-) However for me it doesn't actually remove the COLOR definitions from files, nor the ROTATION definitions (it simply turns them into //-comments). (...) (15 years ago, 17-May-09, to lugnet.cad.dev)
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| | DATHeader NEW as .NET application (version 2.0.1)
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Version 2.0.1 of DATHeader is now available for download at www.michael-heidemann.de as my other webspace is down :-( in the moment. There are now more tests performed. For example: - check for coplanarity (based on Philo's code) - check for double (...) (15 years ago, 17-May-09, to lugnet.cad.dev, lugnet.announce, lugnet.cad)
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| |
| | Re: txt2dat 0.2.2
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(...) Indeed, the default font, being based on the font used on LEGO tiles, was created without any kerning information. (...) Cool, no big hurry, the person that requested it doesn't use a Mac ;) ROSCO (15 years ago, 16-May-09, to lugnet.cad.dev)
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| | Re: txt2dat 0.2.2
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(...) Update: kerning works fine with the "NASAlization" font on my site, so it's just a matter of using fonts that support the feature. Unfortunately it looks like the custom font upload feature is broken, so that's another thing to add to my list (...) (15 years ago, 16-May-09, to lugnet.cad.dev)
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| | Re: txt2dat 0.2.2
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(...) I'm here! I'm catching up on LDraw developments. I updated txt2dat online to use the new version, so there is now a checkbox for the kerning option. I don't notice any difference with the default font, though, so either I haven't hooked it up (...) (15 years ago, 16-May-09, to lugnet.cad.dev)
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| | txt2dat 0.2.2
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A new version of txt2dat is available. The only major change in this version is the addition of the -k option to specify glyph pair kerning. If you don't know what that means then you probably don't need it :) Get it here: (URL) that the Mac version (...) (15 years ago, 16-May-09, to lugnet.announce, lugnet.cad.dev)
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| | LETGUI new version 1.3.0.0
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I have just uploaded a new version of LETGUI package, that contains the new tool Edger2 (Version 1.1). Added support for changed Ytruder V1.3. BUGFIX: If your file is located in a folder with spaces you where not able to view it with the editor or (...) (15 years ago, 15-May-09, to lugnet.cad.dev, lugnet.announce)
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| | New LDraw Tool for Parts author: Edger2
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(URL) Lee Gaiteri's (URL) Edger> utility allows to create conditional lines between adjacent facets, and edge lines on outside (unmatched) facets. But it has a few drawbacks, such as requiring perfect match between facets (something hard to get (...) (15 years ago, 15-May-09, to lugnet.announce, lugnet.cad.dev, FTX)
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| | Re: Peeron_to_MLCad
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(...) Hi Scott If I decide to write a new version of Peeron_to_MLCad I will take note of your suggestions. I am writing to you in private on technical aspects related to programming. (15 years ago, 11-May-09, to lugnet.cad.dev)
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| | Re: Peeron_to_MLCad
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Now that I've had a chance to use Peeron_to_MLCAD, I must say again, excellent work. After getting everything setup, it was fun 'building' the model in MLCAD. The tutorial was great and very necessary, as I was overwhelmed by all of the buttons and (...) (15 years ago, 9-May-09, to lugnet.cad.dev)
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| | Re: Peeron_to_MLCad
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That is pretty neat! It is kind of like getting a LEGO set in all digital form. All you need to do is put it together. I'll have to give this a try as soon as a I have some time. Thanks, Scott W. (15 years ago, 5-May-09, to lugnet.cad.dev)
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| | Re: Peeron_to_MLCad
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(...) Jetro (15 years ago, 4-May-09, to lugnet.cad.dev)
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| | Peeron_to_MLCad
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Hi All I have developed a program called Peeron_to_MLCad. It's useful to simplify the initial phase of implementation of existing Lego sets. With Peeron_to_MLCad is possible to reduce drastically the time needed to select the parts and find the (...) (15 years ago, 4-May-09, to lugnet.announce, lugnet.cad, lugnet.cad.dev, lugnet.cad.mlcad)
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| | Re: Convert to Wavefront object?
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(...) Try: (URL) (15 years ago, 26-Apr-09, to lugnet.cad.dev)
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| | Re: Convert to Wavefront object?
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(...) Yep. I created a minifig and imported the 3DS file into MeshLab. The improper BFC is very apparent. (You can see how part authors simply created one half of a part and then mirrored the primitives to create the other half.) -Mike (15 years ago, 14-Apr-09, to lugnet.cad.dev)
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| | Re: Convert to Wavefront object?
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(...) Just to clarify, the above isn't quite accurate (on two points). First of all, LDView 4.0.1 (the latest release) doesn't support this at all. Secondly, LDView 4.1 (which is forthcoming, but hasn't had even a beta release yet) will have support (...) (15 years ago, 13-Apr-09, to lugnet.cad.dev)
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| | Re: Convert to Wavefront object?
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(...) the program. Travis informed me that LDview can also convert to 3DS and OBJ, so I'll try that. -Mike (15 years ago, 13-Apr-09, to lugnet.cad.dev)
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| | Re: Convert to Wavefront object?
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(...) Michael Heidemann's Inliner should do the job fine! (URL) Philo (15 years ago, 12-Apr-09, to lugnet.cad.dev)
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| | Re: Convert to Wavefront object?
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(...) That's what I suspected. Do you know how to meake all the parts/primitives inline? -Mike (15 years ago, 12-Apr-09, to lugnet.cad.dev)
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| | Re: Convert to Wavefront object?
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(...) Sorry about that, the program may only work with the geometry so all the parts/primitves would probably need to be inlined. It also may need to have a DAT extention rather than MPD. (15 years ago, 11-Apr-09, to lugnet.cad.dev)
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| | Re: Convert to Wavefront object?
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(...) there are no error messages. here's the command line I'm using: 3dto3d minifig.mpd /if9 /of19 /dminifig.obj /ov /ip"J:\ProgsWin\LDraw\parts" /ip"J:\ProgsWin\LDraw\p" I'm assuming it has something to do with it not finding the parts/primitives. (...) (15 years ago, 11-Apr-09, to lugnet.cad.dev)
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| | Re: Convert to Wavefront object?
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(...) Textures are more widely supported in programs where users actually interact/play with 3D models, though. So you are limited basically to rendering still images or animations. Stefan Garcia wrote: (...) animations, however. This is what I want (...) (15 years ago, 11-Apr-09, to lugnet.cad.dev)
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| | Re: Orion or Carsten: please contact me regarding LDDP
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(...) Thanks Willy. That explains a lot. I knew he was in the navy, but thought I'd seen more posts from him relatively recently. (...) That's OK. My suggestion requires coding, so my contacting Carsten won't be too useful if he's no longer coding (...) (15 years ago, 10-Apr-09, to lugnet.cad.dev)
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| | Re: Convert to Wavefront object?
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The materials are imported properly into Blender, but whether they would be exported as .obj is a guess on my part. Materials are better in this case, not textures. As for Blender being a "pig" program, it's a 9MB download that is completely free, (...) (15 years ago, 10-Apr-09, to lugnet.cad.dev)
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| | Re: Orion or Carsten: please contact me regarding LDDP
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(...) Orion is on duty. (...) No he doesn't - Orion is the only coder right now. I was able to contact Carsten to sign the Third Party Agreement for the AIOI though - let me know if you want his new address anyway. w. (15 years ago, 10-Apr-09, to lugnet.cad.dev)
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| | Re: Convert to Wavefront object?
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(...) I was hoping not to have to install another pig application package just to do a conversion. Also, are the materials imported properly? Ideally they would be converted to textures since they are more common. -Mike (15 years ago, 10-Apr-09, to lugnet.cad.dev)
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| | Re: Convert to Wavefront object?
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(...) 3Dto3D bt Thomas Baier works pretty well as it has support for converting between LDraw DAT files to Wavefront OBJ as well as several other formats. You can get it at: h(URL) (15 years ago, 10-Apr-09, to lugnet.cad.dev)
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| | Re: Convert to Wavefront object?
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You could import the files into Blender3D and export them to .obj format. It probably won't look very pretty though. -Stefan- (15 years ago, 10-Apr-09, to lugnet.cad.dev)
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| | Convert to Wavefront object?
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Is there a free means of converting LDraw models to Wavefront object (*.obj) files? Thanks! -Mike (15 years ago, 9-Apr-09, to lugnet.cad.dev)
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| | Orion or Carsten: please contact me regarding LDDP
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(...) I haven't gotten anything from Orion. Carsten, do you still work on LDDP? I seem to remember you don't, but if you do, send me an email, and I'll let you know what my suggestion is. --Travis (15 years ago, 9-Apr-09, to lugnet.cad.dev)
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| | Re: POV-Ray help needed
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|
(...) I forgot the beginning of this thread, and misunderstood your "15% faster" comment. I see now that you're referring to the flattened mesh2 data for the part. I was mis-reading it to be that mesh2 is 15% faster than mesh (which I know you never (...) (15 years ago, 9-Apr-09, to lugnet.cad.dev)
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| | Re: POV-Ray help needed
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(...) Thanks for the info. I have implemented mesh2 support in LDView's export as part of my new curve smoothing support for POV exports, but haven't completely removed the mesh support (although it is currently hard-coded to use mesh2 whether or (...) (15 years ago, 9-Apr-09, to lugnet.cad.dev)
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| | Re: POV-Ray help needed
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(...) Hi Travis, I've finally picked up the povray export project again, You were right I needed to calculate the horizontal fov from the vertical one used in OpenGL. Also you may be interested in knowing that I now also have a basic "hierarchical (...) (15 years ago, 9-Apr-09, to lugnet.cad.dev)
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| | Orion: please contact me regarding LDDP
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Sorry for the personal post, but I've sent two emails to Orion without a response to either (the first sent months ago), so I'm concerned that my messages are being swallowed by a SPAM filter. Orion, I had a suggestion for improving the interaction (...) (15 years ago, 4-Apr-09, to lugnet.cad.dev)
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| | XMPD.DLL
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Some month (or years?) ago I asked for somebody to make a dll that can be used by other software authors to write more easily applications for LDraw files. As there was nobody answering, I started to this myself. As I do not have experience with C (...) (15 years ago, 15-Mar-09, to lugnet.cad.dev)
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| | Re: MPD Wizard 1.0b
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(...) Thank you! Jetro (15 years ago, 29-Jan-09, to lugnet.cad.dev)
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| | Re: MPD Wizard 1.0b
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(...) This is now fixed -Orion (15 years ago, 29-Jan-09, to lugnet.cad.dev)
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| | Re: MPD Wizard 1.0b
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(...) It's been a long time since the last update on this very useful app and, more importantly, the link it could be downloaded from now gives me a "404 not found" error. I have recently included a reference to this great app in an ongoing tutorial (...) (15 years ago, 28-Jan-09, to lugnet.cad.dev)
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| | Re: 3D matrix math question
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(...) Maybe I'll just automatically disable the scaling when "Show control points" is turned on. I'll definitely disable the scaling when "Show all" is turned on. (...) Having the control lines be a different color won't necessarily help when they (...) (16 years ago, 16-Dec-08, to lugnet.cad.dev, FTX)
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| | Re: 3D matrix math question
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(...) Actually the switch turning off condline controls scaling could be a sub-option of "Show control points" and be active only in this case. BTW, could it be possible to show control lines in another color to distinguish them from conditional (...) (16 years ago, 16-Dec-08, to lugnet.cad.dev, FTX)
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| | Re: 3D matrix math question
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(...) This is true, and I actually try to work this way, but if you look up the thread to ((URL) here>), you'll see that this bug led to a problem that would be visible in real-world parts if the suggested conditional edge primitive is created. And (...) (16 years ago, 16-Dec-08, to lugnet.cad.dev, FTX)
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| | Re: 3D matrix math question
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(...) Fixing this one group of rarely important special cases in an efficient manner is probably not the most valuable use of your time. You could always offer 'condition point compression' as a user-selectable option. Tim (16 years ago, 16-Dec-08, to lugnet.cad.dev, FTX)
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| | Re: LETGUI new version 0.1.0.18
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(...) Philo just informed me that both versions that I have packed into the setup are the old versions. So I compliled it again with the current (above mentioned) versions of that tools. I am sorry for any trouble this may have caused on your side. (...) (16 years ago, 15-Dec-08, to lugnet.cad.dev)
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| | Re: 3D matrix math question
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(...) OK, I applied this fix (pulling the control points to be 1 LDU from the first point of the conditional line), and it seems to work. It makes the "Show control points" option under conditional lines less useful, but that's a price I'm willing (...) (16 years ago, 14-Dec-08, to lugnet.cad.dev, FTX)
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| | Re: 3D matrix math question
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(...) Well, I know where the camera is, and I can create vectors from the camera to both end-points of the conditional line, and to both control points. I'm pretty sure that the calculation could be done with just this information. However, I'm not (...) (16 years ago, 14-Dec-08, to lugnet.cad.dev)
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| | Re: 3D matrix math question
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(...) In the case that exhibits the bug, the control points are outside the frustum, but the conditional line itself isn't. So I still need to decide whether or not to draw the conditional line. In this case, it was being drawn at times that it (...) (16 years ago, 14-Dec-08, to lugnet.cad.dev, FTX)
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| | Re: 3D matrix math question
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(...) I think you're right. I'll look into that. It seems like the most straightforward, and since it's just a pre-processing step, it shouldn't affect the performance for anything other than model loading. --Travis (16 years ago, 14-Dec-08, to lugnet.cad.dev, FTX)
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| | Re: 3D matrix math question
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(...) Is there some 'easy' way to determine if the control points are in or out of frustum? Is there any other way to transform points, without considering the frustum (Well, obviously there is at least one, but it's the long way of calculating the (...) (16 years ago, 14-Dec-08, to lugnet.cad.dev)
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| | Re: 3D matrix math question
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(...) OK... I think I understand what I was getting at here. When you introduce perspective then the distance of the conditional point from the line becomes important. Eg. if you have a point that is directly behind its line in a perspective free (...) (16 years ago, 14-Dec-08, to lugnet.cad.dev, FTX)
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| | Re: 3D matrix math question
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(...) Hmmm... Though I can't quite pin it down I have a suspicion that this has something to do with the spatial reduction cause by projection. What projection matrix are you using? Would a simple solution just be to move the conditional points (...) (16 years ago, 14-Dec-08, to lugnet.cad.dev, FTX)
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| | Re: 3D matrix math question
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(...) I am not the best in 3D, but if something outside the view frustum, you do not need to draw that. If you have the special case that only parts of what you should draw are outside the view frustum, I would go to calculate that values for a (...) (16 years ago, 14-Dec-08, to lugnet.cad.dev, FTX)
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| | Re: 3D matrix math question
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(...) Actually, the projected points are all that I am checking, and that's how it's supposed to work. (...) No. The way that conditional lines work is that if the two control points lie on the same side of the conditional line on the screen (in (...) (16 years ago, 14-Dec-08, to lugnet.cad.dev, FTX)
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| | Re: 3D matrix math question
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(...) If I understand correctly you shouldn't be checking on the projection, only on the full 3D transformed points. That means you should check after stage 2.5. You'll need the Z value to work out which side things lie on. Tim (16 years ago, 14-Dec-08, to lugnet.cad.dev, FTX)
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| | 3D matrix math question
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(...) I think I need help. I thought I was using gluProject for the conditional calculations, but discovered that I'm not. I multiple the projection matrix by the model-view matrix to get my transformation matrix, then run the points through that to (...) (16 years ago, 14-Dec-08, to lugnet.cad.dev, FTX)
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| | Re: LETGUI new version 0.1.0.18
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(...) Thanks! For the record: - Ytruder 1.2 is no longer limited to Y direction and can extrude along x, y or z directions - Intersector 1.3 has a new scaling option that improves result for small parts. Philo (16 years ago, 12-Dec-08, to lugnet.cad.dev)
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| | LETGUI new version 0.1.0.18
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A new version of LETGUI ((URL) is now available. Support for new commandline options for Ytruder1.2 and Intersector1.3 are added. Have fun! cu mikeheide (16 years ago, 12-Dec-08, to lugnet.cad.dev)
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