 | | Re: Bricksmith 2.4: Faster. Much Faster.
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In lugnet.cad.dev.mac, Alex Taylor wrote: <snip> (...) <snip> (...) Duh, I was over thinking it big time. Thinking scaling etc would f-up the normals, but with mirroring they will stay the same length. So you are right all I have to do is check if (...) (14 years ago, 16-Jun-10, to lugnet.cad.dev.mac, FTX)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) <snip> (...) Wow, this is amazing. I had no idea you could do these kinds of things with shaders. Like Don I too think it's time for me to get a good book/document on using shaders in OpenGL. Thanks for the revelation. Roland (14 years ago, 16-Jun-10, to lugnet.cad.dev)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) Hoo...that takes me back! :-) Doing the second shader was a bit of a blast from the past, actually - it's over 10 years since I last wrote assembler in anger! Alex (14 years ago, 16-Jun-10, to lugnet.cad.dev)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) ... Wow, that is simple. It looks just like the description of the algorithm in the LDRAW specs. I haven't felt this old since manipulating the colormap for animation went outta style. :^) Thanks for sharing, Don (14 years ago, 16-Jun-10, to lugnet.cad.dev)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) Actually, it's even simpler! This is the code for the geometry-shader: #version 120 #extension GL_NV_geometry_shader4 : enable varying out vec4 gl_TexCoord[]; float determinant(mat2 m) { return m[0][0] * m[1][1] - m[0][1] * m[1][0]; } void (...) (14 years ago, 16-Jun-10, to lugnet.cad.dev)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) Ah ha! Yet another reason to read that vertex-shader book. So, are you suggesting running this algorithm on the graphics card (with counters for the vertices instead counting pixels in the stencil buffer) or perhaps some other algorithm? (...) (14 years ago, 16-Jun-10, to lugnet.cad.dev, FTX)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) One drawback with VBOs is that - unlike displaylists - you can't stick arbitrary GL calls in them. I'm using lists because I need to be able to put matrix operations in them as well as geometry. (...) Change the cull-face orientation ;-) (...) (...) (14 years ago, 16-Jun-10, to lugnet.cad.dev.mac, FTX)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) Interesting, but complicated IMO :-) Shaders offer a much easier implementation, and (I suspect) a faster one. Geometry-shaders for preference, but the algorithm can be implemented using vertex-shaders or even ARB vertex-programs to support (...) (14 years ago, 16-Jun-10, to lugnet.cad.dev, FTX)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) So finally this brings us to a technique that combines the predictive abilities of the conditional lines with the runtime advantages of the stencil and BFC algorithms. Think of the conditional line as a pair of triangles with a shared edge (...) (14 years ago, 16-Jun-10, to lugnet.cad.dev, FTX)
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| | Deactivate Tractor Beam
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(URL) Click the pic for more... AC (14 years ago, 16-Jun-10, to lugnet.starwars, lugnet.build, lugnet.announce.moc, FTX)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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In lugnet.cad.dev.mac, Allen Smith wrote: <snip> (...) Thanks for the insight Allen, I'm also not a 3D guru, but I like to fool around with it as much as anyone interested in 3d programming. Your method is roughly the same as what LD4DStdudio does, (...) (14 years ago, 16-Jun-10, to lugnet.cad.dev.mac, FTX)
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| | Re: From Dan Brown
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(...) This sounds so cool. Too bad I'm on the opposite side of the state. :-( Jeff (14 years ago, 16-Jun-10, to lugnet.general)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) And another thing... The BFC technique actually has an advantage over conditional lines because it works on the entire scene after it's been assembled. Whereas the conditional lines at the edges of the primitives are created in advance, and (...) (14 years ago, 16-Jun-10, to lugnet.cad.dev.mac, lugnet.cad.dev, FTX)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) (URL) technique and the conditional lines both target the same edges lines where the front facing polygons meet the back facing polygons, so the results should be quite similar. (14 years ago, 16-Jun-10, to lugnet.cad.dev.mac, FTX)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) You can ignore the conditional lines and achieve the same effect with display lists using the stencil buffer techniques presented here: (URL) (14 years ago, 16-Jun-10, to lugnet.cad.dev.mac, FTX)
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| | Adult Fans Take LEGO Creations to a New Level
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Adult Fans Take Lego Creations to a New Level Adult Fans of LEGO: Earliest enthusiasts come of age and keep right on building By DIANA MARSZALEK For The Associated Press June 15, 2010 (AP) Around age 14, Christopher Piccirillo sank into what he (...) (14 years ago, 16-Jun-10, to lugnet.mediawatch, lugnet.general, lugnet.people, FTX) !
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) Heh, you hit that problem too? I've played around writing an OpenGL LDraw renderer based exclusively on display lists, but I can't for the life of me figure out how to handle conditional lines in this setup. Has anyone else solved this (...) (14 years ago, 16-Jun-10, to lugnet.cad.dev.mac, FTX)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) Hi Roland, Bricksmith now recursively flattens the geometry for each referenced top-level part then sorts it according to primitive type (triangles, quads, lines). Since the primitives are sorted, each type can be enclosed in a single glBegin (...) (14 years ago, 16-Jun-10, to lugnet.cad.dev.mac, FTX)
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| | Re: LDraw BFC Tool
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(...) Stupid me Link on sourceforge: (URL) Tim (14 years ago, 16-Jun-10, to lugnet.cad.dev, FTX)
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| | Re: Monster Chess pits LEGO bots in game of awesome
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(...) Nicely played. Maybe they could link it up with my (URL) program,and they wouldn't need to use that external computer ;) ROSCO (14 years ago, 16-Jun-10, to lugnet.mediawatch, FTX)
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| | SR 3D Builder and flex parts
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Hi everybody! I have published a new video of my application to show you how flex parts will be implemented. It's just a preview but it worth a look!! If you are discouraged using lSynth, this maybe the solution! The video at (URL) the new release, (...) (14 years ago, 15-Jun-10, to lugnet.cad)
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| | Re: New trains coming
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(...) As per: (URL) passenger train is now available in US. A *slight* throwback to 7745, but quite different stylings 25 years on. Also slightly similar to Virgin trains in the UK - perhaps there's something more similar in mainland Europe or east (...) (14 years ago, 15-Jun-10, to lugnet.trains)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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In lugnet.cad.dev.mac, Kevin L. Clague wrote: <snip> (...) Hi Kevin, Sorry I replied to the wrong message, that's what you get if you read the group in a newsgroup client and post at the site. Still hoping Allan could share some insight on the (...) (14 years ago, 15-Jun-10, to lugnet.cad.dev.mac, FTX)
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| | Re: LDraw BFC Tool
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(...) Cool! Where does one find an executable? Kevin (14 years ago, 15-Jun-10, to lugnet.cad.dev, FTX)
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| | Re: Perth Model Railway Show 2010 Pics
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(...) (URL) (14 years ago, 15-Jun-10, to lugnet.loc.au.wa.per)
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| | Re: BrickOS Patches and Development
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Hello Yann, 2010/6/15 Yann Vernier <yann@algonet.se>: (...) I really would prefer to see the interrupt code running to disabling all interrupts for several milliseconds, loosing several ticks and disabling all sensors during this time. Did you apply (...) (14 years ago, 15-Jun-10, to lugnet.robotics.rcx.legos)
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| | LDraw BFC Tool
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The time is up. There is no need to edit thousand lines of code anymore if you are in trouble with BFC-Certification! I have written a tool which requires .NET framework 3.5 and managed DirectX 9 to run. With this tool you are able to change wrong (...) (14 years ago, 15-Jun-10, to lugnet.cad.dev, lugnet.cad, FTX)
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| | Monster Chess pits LEGO bots in game of awesome
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From Cnet.com By Matt Hickey Monster Chess pits LEGO bots in game of awesome I hate playing chess. I don't hate the game; in fact it's pure strategy, something I love. But despite years of practice, I still almost never win. And now, it would seem, (...) (14 years ago, 15-Jun-10, to lugnet.mediawatch, lugnet.general, lugnet.events, lugnet.robotics, FTX) !
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| | Re: BrickOS Patches and Development
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(...) I've recently mucked about with the Power Functions protocol, and got a proof of concept running on the RCX using brickOS. The main problem is that it's quite timing sensitive, so this code only worked reliably with interrupts disabled (...) (14 years ago, 15-Jun-10, to lugnet.robotics.rcx.legos)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) Hi Roland, Just to be clear, Allan recoded and achieved this fantastic performance improvement. Kevin (14 years ago, 15-Jun-10, to lugnet.cad.dev.mac, FTX)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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In lugnet.cad.dev.mac, Kevin L. Clague wrote: <snip> (...) <snip> (...) Hi, Keving Just from a technical interest, how did you achieve that boost? I'm in the midst of writing a new LDraw renderer myself, so I'm very interested in any possible (...) (14 years ago, 14-Jun-10, to lugnet.cad.dev.mac, FTX)
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| | Re: Perth Model Railway Show 2010 Pics
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I like this clever use of monorail tracks: (URL) (14 years ago, 14-Jun-10, to lugnet.loc.au.wa.per)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) ...snip.... (...) Allan, Congratulations on such a great improvement! Keep up the good work. Kevin (14 years ago, 14-Jun-10, to lugnet.cad.dev.mac, FTX)
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| | Bricksmith 2.4: Faster. Much Faster.
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(2 URLs) Bricksmith 2.4> adds the following features: Drawing speed improvements of up to 1200% 64-bit native on Mac OS X 10.6 Viewports fill their entire frame Supports displaying the newly-standardized direct RGB color syntax Supports displaying (...) (14 years ago, 14-Jun-10, to lugnet.announce, lugnet.cad, lugnet.cad.dev.mac, FTX)
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| | [FreeLUG : French Enthusiast LEGO(c) User Group] Les nouveautés samedi 12 juin 2010
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Bonjour Voici la lettre d'information du site "FreeLUG : French Enthusiast LEGO(c) User Group" ((URL) lettre recense les articles et les brèves publiés depuis 1 jours. Nouveaux articles ---...--- ** Le train de passagers 7938 ** par Gilles (...) (14 years ago, 13-Jun-10, to lugnet.org.fr.freelug)
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| | My latest MOC; Volvo NL12 with conveyor belt trailer
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Yes, I indead this one before. That was back in '97 but I wanted to build the remake for many years. October last year I started with this model to have it finished in May this year. It's much more realistic than its ancestor and works much better (...) (14 years ago, 13-Jun-10, to lugnet.modelteam, lugnet.technic, FTX)
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| | From Dan Brown
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Hi all. I am back. It has been awhile since I have posted anything from just me. I am no longer on Bricklink. And I have taken back seat at the Toy and Plastic Brick Museum (daily operations). I am back to building again for the 1st time in well (...) (14 years ago, 13-Jun-10, to lugnet.general)
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| | Re: Fig-TEES(tm) Now you can have your company logo on a compatble part
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(...) Coming soon. (14 years ago, 12-Jun-10, to lugnet.market.buy-sell-trade)
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| | Kernel freeze when attempting to use rotation sensor
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Hi, I've tried using the latest BrickOS and the latest BIBO with patches (from here: (URL) both with the same result. I don't know if nobody's really used a rotation sensor in 4 years (unlikely), or if my code just fails (likely), but every time I (...) (14 years ago, 12-Jun-10, to lugnet.robotics.rcx.legos)
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| | Five Seconds in Datsville
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Here's my first animation from Datsville. Took one night to prepare, took an hour to render the 74 frames, takes 5 seconds to watch the result. (URL) (14 years ago, 12-Jun-10, to lugnet.animation)
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