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Create a precise modeling transcript for modeling a simple toy carBRL-CAD
Status: ClosedTime to complete:
100 hrs
Mentors: Sean, Harmanpreet
This is a follow-on task to http://www.google-melange.com/gci/task/view/google/gci2013/6462224168124416
Your task is to take the preceding tutorial that was submitted and create a precise command-line transcript that can be fed into mged or archer (ideally both) that will result in the competed car without any user interaction (other than to copy-paste or load the modeling commands you use).
Submit an ged command transcript (a text file that imports with the 'source' command). Lines may be preceded with a '#' to insert comments. Include every detail of the preceding tutorial task including setting colors, creating regions, and creating the sketch.
References:
- MGED Quick Reference Card
- Introduction to MGED
- http://brlcad.org/wiki/Sketch
Uploaded Work
| File name/URL | File size | Date submitted | |
|---|---|---|---|
| transcript.txt | 3.5 KB | December 29 2014 15:30 UTC | |
| transcript.txt | 2.5 KB | December 30 2014 15:05 UTC | |
| transcript.txt | 2.0 KB | December 31 2014 08:00 UTC |
I would like to work on this task.
This task has been assigned to Vladimir Kuznetsov. You have 100 hours to complete this task, good luck!
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Vladimir, this looks really good, but there's just one minor issue. The "put" command should only be used for the sketch primitive as it doesn't have a proper input interface. The rest of the objects should be using the 'in' command like you did on the s2 extrude line.
I did the necessary changes, but the system won't let me upload my work. Can you extend the deadline for this task so i can upload the transcript?
The deadline of the task has been extended with 1 days and 0 hours.
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Vladimir,
That looks better! Much better. But I noticed one more problem... Is that level of precision really necessary? That is, all the digits after the decimal points?
You should only include the precision that is actually useful. For example, with the s6 object, can "in s6 rcc 2767.4240846610855 -2273.8011132232987 1361.4731033087728 0 0 377.91746131285214 275.72984620547697" be reduced to:
in s6 rcc 2767 -2273 1361 0 0 377 275
Or even better still, can it be reduced further like this?
in s6 rcc 2800 -2300 1400 0 0 380 280
Make sense? The simpler the better. Of course, you don't want to change the model drastically, but if it can be described with fewer significant digits (e.g., just 2 or 3 digits before the zeros), the easier it will be to input and understand.
At a minimum, you shouldn't need more than 5 digits precision. E.g., 2767.42408... becomes 2767.4 and 894.776262... becomes 894.78 etc. but you can probably get away with 2 or 3.
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Vladimir, fantastic work! This will go a really long way towards teaching others how to model and being a great working example. Thank you for your efforts!
Did you try lower precision and encounter problems?
Nope, there weren't any problems with it. Happy new year!