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(...) SNIP If I am right, this file would have error messages with L3P and DATHeader as the two lines are identical. So one line has to be deleted. cu mikeheide (14 years ago, 23-Aug-10, to lugnet.cad.dev, FTX)
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| | Re: LDraw BFC Tool
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(...) If such things exist in BFC-certified parts, then they are obviously wrong, but won't necessarily be visible. It's obviously an error condition, so having the program detect it seems just to be a useful feature to me. I don't see why there (...) (14 years ago, 20-Jun-10, to lugnet.cad.dev)
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| | Re: LDraw BFC Tool
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(...) Your guess is as good as mine. Hopefully Nils is reading and can answer it via me. Tim (14 years ago, 20-Jun-10, to lugnet.cad.dev)
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| | Re: LDraw BFC Tool
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(...) Double sided part? I don't get it at all. Two identical references to a primitive, and the first is preceded by a BCF INVERTNEXT instruction. How will it look after being changed to single-sided? Has there been any discussions on this issue so (...) (14 years ago, 20-Jun-10, to lugnet.cad.dev)
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| | Re: LDraw BFC Tool
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(...) Hi, I like to introduce version 1.7.0.5 Beta of the BFC-Tool (it is necessary to update the information on the downloads section on ldraw.org): New features: Changed required .NET Framework from 3.5 to Framework 2.0 Added "What's (...) (14 years ago, 20-Jun-10, to lugnet.cad.dev, FTX)
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| | Re: Bricksmith 2.4: Faster. Much Faster.
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(...) Great !!!! One request can you make it posible to edit inserted minifigures with minifig generator ? Thanks (14 years ago, 18-Jun-10, to lugnet.cad.dev.mac, FTX)
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| | Re: LDraw BFC Tool
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(...) snip (...) Thanks! You have no idea how many times I've forgotten to attach attachments to emails! Same thing! Kevin (14 years ago, 17-Jun-10, to lugnet.cad.dev, FTX)
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| | 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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| | 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: 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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