Subject:
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Re: [new part] Animal Bird (falcon)
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Newsgroups:
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lugnet.cad.dat.parts
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Date:
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Wed, 2 Aug 2000 21:21:00 GMT
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Viewed:
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1089 times
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In lugnet.cad.dat.parts, Dennis Osborn writes:
> Here is the first version of the falcon that I feel confident releaseing to
> the public. This is the first piece I have modeled and I chose a difficult
> piece to do.
>
> I now have pov views of the file on my webpage.
> http://www.student.ipfw.edu/~osbodr01/falcon/falcon.html
>
> You can get a copy of the dat file here
> http://www.student.ipfw.edu/~osbodr01/falcon/bird.dat
> (How do you attach a file to a message at lugnet without getting it included
> in the body of the message?)
>
> Looking at some other dat files being posted, I can see that I did
> somethings wrong. I used points with two decimal while others rarly use
> them at all. Also, I have left the bottom of the bird undone. On the
> piece, this is where the hole for the stud would be. Is it required to put
> it in? If so, did my use of decimal screw up the use of a primative?
>
> Any suggestions of how I could improve the piece would be welcomed.
>
> Dennis
Well Dennis, you certainly choose a very difficult part to start with, and I
am impressed with the progress you have made.
Firstly on posting - if you post to lugnet.cad.dat.parts and attach the dat
file, then Web-Interface users can launch the DAT file directly into their
favourite dat renderer, rather than having to download it from your web site.
Secondly on precision. On a complex part such as this it is essential to use
two (or even three) decimal places - the co-ordinates of such a part will
rarely be on Ldu (LDraw unit) boundaries - so what you have done is fine in
this respect.
Thirdly, some comments on the part itself
- I am not sure the proportions are correct. The front-to-back depth of the
body looks about right (I measured mine at 23LDu), but the height seems
wrong. Mine is about 50 LDu up from the perch to the top of the head, and
24LDu down from the perch to the tip of the tail. The DAT file seems
(without decomposing the file entirely) to be about 2/3 of these
measurements. A close enough approximation to the true size is 1LDu = 1/64
inch - I find a steel rule marked in 64ths invaluable.
- Please read up in the FAQ about type 5 lines (optional lines, or more
correctly, conditional lines). These are important to include in any part
with curved surfaces. They ensure that, when viewed obliquely, the part has
a bounding edge line. It is quite understandable that you have omitted these
as they are probably the most difficult concept for new authors to get to
grips with.
- It is not clear what you have done around the eyes. To "drill" the eyes,
which are cylindrical holes, you should be able to use the 4-4cyli, 4-4edge
and 4-4disc primitives, but you do need to leave a gap in the quad used for
the cheek, by using a 4-4ndis primitive and filling in the surrounding area
with quads/triangles.
- A small point - please adhere to the standard header format, as it makes
life easier for Steve when it comes to the voting and officialisation of the
part
0 <Part description>
0 Name: <part number>.DAT
0 Author: <your name> <optional email address>
0 Unofficial Element
Despite all this, please don't give up - this is an good start and you seem
to have done all the groundwork.
Please feel free to email me directly if you want help or advice.
Chris Dee (chris_w_dee@hotmail.com)
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Message has 1 Reply:
 | | Re: [new part] Animal Bird (falcon)
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| (...) Uuugggg. I just realized what my mistake was. And Chris, you are absolutely right. What I did was print out the reference photos from my website and used the 1x1 brick as a reference. I measured the height and width of the brick and calculated (...) (24 years ago, 3-Aug-00, to lugnet.cad.dat.parts)
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Message is in Reply To:
| | [new part] Animal Bird (falcon)
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| Here is the first version of the falcon that I feel confident releaseing to the public. This is the first piece I have modeled and I chose a difficult piece to do. I now have pov views of the file on my webpage. (URL) can get a copy of the dat file (...) (24 years ago, 2-Aug-00, to lugnet.cad.dat.parts)
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