Subject:
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Re: part question: 30358
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Newsgroups:
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lugnet.cad.dev
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Date:
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Sun, 30 May 1999 01:15:45 GMT
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Viewed:
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643 times
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In lugnet.cad.dev, Karim Nassar writes:
> I've posted a portion of the nearly complete 30358 in lugnet.cad.dat.parts...
> I have a question for
> the experienced part authors...
>
> You can see that the two studs intersect the interior sloped sides of the
> "box" construct. I've
> been trying for the past couple of days to get an edge line at this
> intersection, but can't seem to
> get the math right. My questions then are:
>
> Is an edge line necessary here?
Yes, it is necessary.
> If so, how do I go about calculating the scaling and position of the edge
> primitive?
First off, I would not use the primitives for this intersection. Once the
highest Y value of the intersecting curve is known, I would scale the
stud2a.dat primitive to reach that point.
To find the points for the edge, inline a cylinder which fills the space
between stud2a.dat and the actual bottom of the stud. You need to find the Y
value for each of those lower vertices. You can ignore the Z values, and
concentrate on X and Y.
You can use my rotate.xls (see
<http://www.geocities.com/SouthBeach/Lagoon/8641/index.html>) spreadsheet to
help find the Y values. Go to the Interpolation tab. Enter the X and Y
values of the end-points of the angled surface. Then start entering X values
for each lower vertex of the inlined cylinder. Update the inlined code with
the Y values supplied by the spreadsheet.
You can also use the points with the new Y values to write the line-commands
for the intersection edge.
HTH,
Steve
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Message is in Reply To:
 | | part question: 30358
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| I've posted a portion of the nearly complete 30358 in lugnet.cad.dat.parts... I have a question for the experienced part authors... You can see that the two studs intersect the interior sloped sides of the "box" construct. I've been trying for the (...) (25 years ago, 29-May-99, to lugnet.cad.dev)
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