 | | Re: Hidden surface removal, and vertex order in part/primitive DAT files
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Michael Lachmann wrote in message ... (...) I retract my earlier suggestion. I'd prefer to test for '0 CW-compliant' than '0 CW*' because checking for an exact string match is usually easier. Not supporting wildcards also promotes consistency. (...) (25 years ago, 2-Oct-99, to lugnet.cad.dev)
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| | Re: MI/X (Was: LeoCAD for Linux (Was: Compiling MPD Builder/Splitter for DOS/Win?))
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[ FUT lugnet.off-topic.geek ] Doc: (...) I don't get as far as connecting to _any_ Linux machine. (...) Where can I pick that up? Play well, Jacob ---...--- -- E-mail: sparre@cats.nbi.dk -- -- Web...: <URL:(URL) -- ---...--- (25 years ago, 2-Oct-99, to lugnet.off-topic.geek, lugnet.cad, lugnet.cad.dev)
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| | Re: New Group Idea
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(...) Alright then, I'll submit my planned .DAT files of Byggis door and windows and my Tyco phone to lugnet.dat.cad.parts. B-) /Tore (25 years ago, 2-Oct-99, to lugnet.cad.dev)
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| | Re: Hidden surface removal, and vertex order in part/primitive DAT files
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What if say a complient file contains anything starting with "0 CW". Any program dealing with this information could just scan for "0 CW*". We also could use a tag "0 AW*" if why ever the orientation is not clock-wice but anti-clockwice .... I think (...) (25 years ago, 2-Oct-99, to lugnet.cad.dev)
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| | Re: New Group Idea
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(...) Ditto. -Tim <>< (URL) timcourtne ICQ: 23951114 How to rob a bank in ancient Rome: "Catapultam habeo. Nisi pecuniam omnem mihi dabis, ad caput tuum saxum immane mittam." (I have a catapult. Give me all the money, or I will fling an enormous (...) (25 years ago, 2-Oct-99, to lugnet.cad.dev)
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| | Re: New Group Idea
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(...) Evil. --Todd (25 years ago, 2-Oct-99, to lugnet.cad.dev)
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| | Re: MI/X (Was: LeoCAD for Linux (Was: Compiling MPD Builder/Splitter for DOS/Win?))
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(...) I have used the product under NT. It isn't very stable. But it works. The problem is that your apps are looking for fonts that you haven't installed into the X server on the Mac. There is a faq for MI/X on their site, which includes a (...) (25 years ago, 1-Oct-99, to lugnet.off-topic.geek, lugnet.cad, lugnet.cad.dev)
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| | Re: CW/CCW, vertex sequence, co-planar, convex, (115kB)
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(...) Because the program doesn't work that way, it just turns backface culling on and draws everything in green, then switch to "frontface culling" (does it exist ?) and draws everything red. I've been busy finishing my first game project (not Lego (...) (25 years ago, 1-Oct-99, to lugnet.cad.dev)
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| | Re: Hidden surface removal, and vertex order in part/primitive DAT files
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(...) I can't argue with that :) (...) No way ! The front faces are CCW in 3DS Max, and quoting the OpenGL 1.2 specs. for glFrontFace() "mode: Specifies the orientation of front-facing polygons. GL_CW and GL_CCW are accepted. The initial value is (...) (25 years ago, 1-Oct-99, to lugnet.cad.dev)
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| | MI/X (Was: LeoCAD for Linux (Was: Compiling MPD Builder/Splitter for DOS/Win?))
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[ XFUT lugnet.off-topic.geek ] Mike Stanley: (...) Didn't work. There is some kind of font problems that don't make sense. (...) I am not a Mac person either. - And I would like to stay that way (but still get the d*** thing to work). No plain and (...) (25 years ago, 1-Oct-99, to lugnet.cad, lugnet.cad.dev, lugnet.off-topic.geek)
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| | Re: CW/CCW, vertex sequence, co-planar, convex, (115kB)
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[ I got a bit too much good French red wine, so maybe I shouldn't try to answer now, but ... ] Steve: (...) Right. (...) Shouldn't all elements of transparent parts be drawn? (...) Yes. (I start to suspect that wine has a good influence on my (...) (25 years ago, 1-Oct-99, to lugnet.cad.dev)
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| | Re: CW/CCW, vertex sequence, co-planar, convex, (115kB)
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(...) why can't you simply mod your proggy to handle the conversion automatically?? i mean.. if your proggy is smart enough to detect uninified normals and then allows the user to press a key to mod the CW/CCW property of the face, why can't you (...) (25 years ago, 1-Oct-99, to lugnet.cad.dev)
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| | Re: LeoCAD for Linux (Was: Compiling MPD Builder/Splitter for DOS/Win?)
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(...) Tried this? (URL) not a Mac person at all and I got it to work in just a couple of minutes, so it might work for you. (25 years ago, 1-Oct-99, to lugnet.cad, lugnet.cad.dev)
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| | Re: Hidden surface removal, and vertex order in part/primitive DAT files
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Leonardo Zide wrote in message <37F4ECA7.C0BFCF7D@c...com.br>... (...) I'd vote for CW for two reasons: 1) 'Clockwise' is shorter than 'counterclockwise'. 2) CW is used more often than CCW in rendering applications (to my knowledge) because the (...) (25 years ago, 1-Oct-99, to lugnet.cad.dev)
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| | Re: CW/CCW, vertex sequence, co-planar, convex, (115kB)
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(...) That would be nice, but it's unrealistic. (...) No, they shouldn't. Just because the part XYZ is CW, a program can't assume that the primitive ABC is also CW. (...) I like this. I don't like it for use on primitives, but DOUBLE-SIDED could (...) (25 years ago, 1-Oct-99, to lugnet.cad.dev)
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| | Re: CW/CCW, vertex sequence, co-planar, convex, (115kB)
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Gary Williams wrote in message ... (...) *a lightbulb appears above my head* Nevermind, I understand now. For some reason I was imagining inverting all three axes, but now I realize only two would need to be inverted, before the part is rotated 180 (...) (25 years ago, 1-Oct-99, to lugnet.cad.dev)
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| | Re: CW/CCW, vertex sequence, co-planar, convex, (115kB)
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Steve: (...) Because our clever rendering programs will notice that the first transformation matrix has negative determinant, and therefore will swap the CW and CCW checks. Play well, Jacob ---...--- -- E-mail: sparre@cats.nbi.dk -- -- Web...: (...) (25 years ago, 1-Oct-99, to lugnet.cad.dev)
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| | Re: LeoCAD for Linux (Was: Compiling MPD Builder/Splitter for DOS/Win?)
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Leonardo: (...) I do have X installed _on_my_Linux_machine_, but I haven't managed to get the Macs here in Paris to run a X server (yet). Play well, Jacob ---...--- -- E-mail: sparre@cats.nbi.dk -- -- Web...: <URL:(URL) -- ---...--- (25 years ago, 1-Oct-99, to lugnet.cad, lugnet.cad.dev)
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| | Re: CW/CCW, vertex sequence, co-planar, convex, (115kB)
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(...) Why not simply: (...) Assuming the primitives are all defined so their faces are turned outward. I would see allowing both CW and CCW as a convenience for parts authors. There's no real difference between one way and the other. CW has a slight (...) (25 years ago, 1-Oct-99, to lugnet.cad.dev)
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| | Re: LeoCAD for Linux (Was: Compiling MPD Builder/Splitter for DOS/Win?)
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(...) I'll add that to my page. I don't know (almost) anything about writing linux applications, so I don't know which options to use when compiling. (...) The MS Windows version works correctly (without creating a window) but the Linux version (...) (25 years ago, 1-Oct-99, to lugnet.cad, lugnet.cad.dev)
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