 | | Edger2 update
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(URL) Primitives such as partial cylinders or spheres have conditional lines on edge. For cylinders, these integrated conditional lines are expected to match a tangent plane, for spheres they match a joining cylinder. If you try to join something (...) (14 years ago, 24-Sep-10, to lugnet.announce, lugnet.cad, FTX)
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| | Re: Why quads? Re: L(EGO)Draw parts - 4th batch
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(...) Hmmm, it seems to me that any algorithm that can find the missing Type 5 lines (in order to create the dummy entries) should be able to find *all* of the Type 5 lines. Some missing lines is just a special case of all missing. So just include (...) (14 years ago, 23-Sep-10, to lugnet.cad.dev.org.ldraw)
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| | Re: Why quads? Re: L(EGO)Draw parts - 4th batch
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(...) Actually, no. That is indeed a long-term goal, but it is hampered by two things. First of all, it's a lot of work. Secondly, the current algorithm is actually useful to part authors, since it can visually highlight missing conditional lines. (...) (14 years ago, 23-Sep-10, to lugnet.cad.dev.org.ldraw)
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| | Re: Conditional lines on sloped wedge parts 43720 and 43721
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(...) Unfortunately it messes up unless you inlude FTX line breaks, or fixed code box characters (pipe). Unfortunately, both make it harder for people using email or newsreaders, so probably best to do it as you did, browsers can just click "View (...) (14 years ago, 22-Sep-10, to lugnet.cad.dat.parts, FTX)
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| | Re: Why quads? Re: L(EGO)Draw parts - 4th batch
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(...) Sorry for that ;o) But (fortunately) here are very few twisted surfaces in LEGO pieces, so I don't think my tool has created too much havoc... (...) Problem is that at this low level I have almost no information about the intended geometry - I (...) (14 years ago, 22-Sep-10, to lugnet.cad.dev.org.ldraw)
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| | Re: Advice on hair pieces
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(...) So do I... That's why I love Sculptris that has a wonderfully intuitive interface (but it does help to have a reasonably powerful machine). Meshlab is more austere and lacks documentation, but the few needed functions can be conquered without (...) (14 years ago, 22-Sep-10, to lugnet.cad.dat.parts)
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| | Re: Advice on hair pieces
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(...) reads the primitives correctly. What I meant about bad lines was that I noticed your tool does some checking for spurious lines; that must just be for lines between coplanar surfaces. (I could see this being a problem for highly detailed parts (...) (14 years ago, 22-Sep-10, to lugnet.cad.dat.parts)
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| | Re: Conditional lines on sloped wedge parts 43720 and 43721 [DAT]
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(...) Very interesting! (URL) I am not so much comvinced by the improvement for flat shading. Looks like we trade triangular artefacts in one direction with artefacts in the other one. But it drastically improves the very ugly condlines artefacts! (...) (14 years ago, 22-Sep-10, to lugnet.cad.dat.parts, FTX)
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| | Re: Advice on hair pieces
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(...) Not sure what you mean - it doesn't check if a line has its ends properly ending on a surface vertex. (loosely related) I have a pending update for edger2 that check if the angle of existing condlines matches angle between surfaces. If the (...) (14 years ago, 22-Sep-10, to lugnet.cad.dat.parts)
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| | Re: Why quads? Re: L(EGO)Draw parts - 4th batch
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(...) I see. So what you really want to do in LDView is ignore the Type 5 lines (at least for smoothing) and smooth wherever there's no Type 2 edge lines between the triangles (and quads). (...) Did anybody ever did actually fix the parts though? I (...) (14 years ago, 22-Sep-10, to lugnet.cad.dev.org.ldraw)
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| | Re: Conditional lines on sloped wedge parts 43720 and 43721 [DAT]
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(...) Ok so it's been a few years, but I took another look at this. Did anybody ever make a twist primitive? It appears like all you need to do is something like this. Don 0 Wedge 4 x 2 Sloped Left 0 Name: 43721.dat 0 Author: Donald Sutter 0 (...) (14 years ago, 22-Sep-10, to lugnet.cad.dat.parts)
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| | Re: Advice on hair pieces
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(...) Ah, I was not. Very interesting. I'm still plowing ahead with upgrading Edger regardless because I'd like that built into this tool, but options like making inlining parts optional and not adding conditional lines within a certain angle (...) (14 years ago, 21-Sep-10, to lugnet.cad.dat.parts)
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| | Re: LPub Q's
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(...) It's true that 8.5"x11" (US letter size) is not the same size as metric A4, but the above page includes an entry for QPrinter::Letter, which is exactly 8.5"x11", so unless that's not supported by LPub, I don't think that's the problem. (...) (14 years ago, 21-Sep-10, to lugnet.cad, FTX)
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| | Re: Why quads? Re: L(EGO)Draw parts - 4th batch
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(...) algorithm. LDView uses Type 5 lines in the LDraw file for smoothing, and considers any two surfaces that have a Type 5 line joining them to be part of a smooth curve. The problem is that two co-planar triangles sitting next to each other (...) (14 years ago, 21-Sep-10, to lugnet.cad.dev.org.ldraw)
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| | Re: Advice on hair pieces
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(...) It would be interesting to have a configurable threshold, a 0.1ldu move is not visible and might bring more quads to flat state. (...) Thanks - fortunately it was certified by two other peoples ;o) (...) Probably... (...) There is a special (...) (14 years ago, 21-Sep-10, to lugnet.cad.dat.parts)
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| | Re: Advice on hair pieces
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(...) I am short of time at the moment for a more detailed answer, but are you aware of Edger2? ((URL) The code is a mess, but it does a pretty good job... Philo (14 years ago, 21-Sep-10, to lugnet.cad.dat.parts)
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| | Re: Advice on hair pieces
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(...) Well, at least splitting into triangles at the middle would produce a fairly clean result in that it would eliminate artifacts, but at the cost of creating extra triangles. I've been working on my adjustment tool and my initial results have (...) (14 years ago, 21-Sep-10, to lugnet.cad.dat.parts)
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| | Re: LPub Q's
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In lugnet.cad, Kevin L. Clague wrote: ... snipped ... (...) Another thing that LPub 4 does is automatically center step groups and assembly steps in the center of the page. If there is a single step and with callout(s) on the page, then LPub (...) (14 years ago, 19-Sep-10, to lugnet.cad, FTX)
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| | Re: LPub Q's
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(...) I found a bug in LPub. (...) Yes, your highest level model is interesting because the entire model is expressed as steps in submodels, so when it placed the model scale meta, it did it at the top of the step (which is before all the add lines (...) (14 years ago, 19-Sep-10, to lugnet.cad, FTX)
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| | Re: Why quads? Re: L(EGO)Draw parts - 4th batch
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(...) Isn't this the same problem we ran into with the twisted wedge bricks a while back? Those gave us problematic conditional lines in addition to the ugly zigzag shading artifacts. (URL) thought the solution was to orient the triangles orthogonal (...) (14 years ago, 18-Sep-10, to lugnet.cad.dev.org.ldraw)
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