 | | Re: Quad intersections
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(...) Here's what I use, it works for triangles but you can easily change it for a quad. The idea is to check the angles between the vectors formed by each vertex and the point you're testing. x,y,z: point p1,p2,p3: vertex (float[3]) double pa1[3], (...) (26 years ago, 16-Apr-99, to lugnet.cad.dev)
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| | Re: Abuse (was: Re: Non-TLG Parts)
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Steve Bliss wrote in message <3717595d.1405512@lu...et.com>... (...) Normally I would agree, but the situation has gotten to the point where I can't tell which side of the question is worse. JW certainly comes off as rough around the edges, but his (...) (26 years ago, 16-Apr-99, to lugnet.cad.dev)
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| | Re: Status of SW Ion Cannon?
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(...) I just need to make the cone at the base of the barrel. I was debating whether to include the cutout on the underside of the barrel or not. It would be a lot easier to make it a 4-4 cone. Also, it would look better in L3P/POV-Ray because then (...) (26 years ago, 16-Apr-99, to lugnet.cad.dev)
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| | Re: suggestion for roadplate like parts
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(...) That's fine, I'm willing to make the parts, but I'm not highly motivated for it. Steve (26 years ago, 16-Apr-99, to lugnet.cad.dev)
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| | Re: Quad intersections
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(...) Using quad points Q0 - Q3, point of intersection I. For all lines QmQn, where I.X is between Qm.X and Qn.X, interpolate the point Jmn on QmQn where Jmn.X = I.X. If I.Z is between min(Jmn.Z) and max(Jmn.Z) then I lies within quad Q. If I.Z is (...) (26 years ago, 16-Apr-99, to lugnet.cad.dev)
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| | Re: Quad intersections
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Based on Dave's formulae, I have been able to calculate the intersection of a plane (given three points) and a line (given two points). How do I then determine whether the point of intersection falls within a quad (as in Dave's "exercise left for (...) (26 years ago, 16-Apr-99, to lugnet.cad.dev)
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| | Re: suggestion for roadplate like parts
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(...) I don't have all of them, but I do have many. I'll see what I can do(1)! Jeff (1) I don't have constant access to a scanner, so it might take me a while. (26 years ago, 16-Apr-99, to lugnet.cad.dev)
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| | Status of SW Ion Cannon?
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Steve, Where are you on this one? I did part of it previously, but saw you were in progress on the part tracker. If you haven't done the sections I have done, I'd be happy to send you what I have (or vice-versa). -John Van (26 years ago, 16-Apr-99, to lugnet.cad.dev)
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| | Re: [Newpart] - #2871, Electric Train 9V Motor Decorative Side
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(...) Pretty small return on the investment of so many peoples' time and frustration. Then again, there's always the next key. (26 years ago, 16-Apr-99, to lugnet.cad, lugnet.cad.dev)
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| | Re: suggestion for roadplate like parts
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If you have all these parts, and you want LDraw part-files for them, I'd be willing to work on making the files. Scan at 64dpi (that's 'life size' for LDraw), and e-mail them to me. Steve (...) (26 years ago, 16-Apr-99, to lugnet.cad.dev)
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