Beginner: Install and run BRL-CAD! #7BRL-CAD
Status: ClosedTime to complete: 100 hrs Mentors: Ishwerdas, Ch3ckTags: modeling, CAD, 3d, designBeginner

This task merely involves downloading, installing, and running BRL-CAD and then proving you got it working.

You'll prove it by creating some really simple geometry, rendering it, and submitting a screenshot.

You have a choice of how to obtain BRL-CAD, each with different learning challenges:

  • BEST: You can download and compile directly from our repository: http://brlcad.org/wiki/Building_from_SVN
  • EASY: You can download our Virtual Machine image: http://brlcad.org/wiki/Deuces#Getting_Started
  • MEH: You can use a binary tarball: http://brlcad.org/d/download

Once you have BRL-CAD installed, you'll want to run either mged or archer. You can see our Intro to MGED on http://brlcad.org/wiki/Documentation for extensive tutorials on how to model, but here are some quick steps to get you going:

  1. First, create a simple 512x512 black and white image that has your name in it somewhere. Any paint program will do here.
  2. Save that as a png image named hello.png and
  3. Convert your png image to a bw image by running our png-bw command (png-bw hello.png hello.bw). If you can't figure out how to do that on your system command line, this command on the mged prompt should work if you copy-paste it exactly as written into mged: exec \[ file join \[ bu_brlcad_root bin \] pix-bw \] hello.png \ hello.bw
  4. Create your extruded bitmap geometry: in gcirocks.ebm ebm hello.bw 512 512 64
  5. Render a pretty picture: B gcirocks.ebm ae 35 25 zoom 1.5 l gcirocks.ebm rt
  6. You should see a rendering window pop up if everything else was okay. Take a full screenshot and submit it here.

References:
  • http://brlcad.org/wiki/Compiling -- if you're trying to compile from source
  • http://brlcad.org/wiki/Documentation -- intro to mged and quick ref command card
  • http://brlcad.org/wiki/EBM -- more details on the ebm you are creating
Uploaded Work
File name/URLFile sizeDate submitted
Screen Shot 2014-12-29 at 2.55.21 am.png34.4 KBDecember 29 2014 04:58 UTC
Comments
Melvin Fooon December 27 2014 06:47 UTCTask Claimed

I would like to work on this task.

Sean on December 27 2014 06:53 UTCTask Assigned

This task has been assigned to Melvin Foo. You have 100 hours to complete this task, good luck!

Melvin Fooon December 28 2014 14:08 UTCProblem extruding

Hi mentors, 


I have some experience in command line and CAD programs but when I try to extrude the bitmap by typing this command into the mged prompt: 'in gcirocks.ebm ebm hello.bw 512 512 64'. I get this error,



rt_ebm_import4() file 'hello.bw' is too short 332 32768


rt_db_external5_to_internal5(gcirocks.ebm):  import failure


db_recurse() rt_db_get_internal(gcirocks.ebm) FAIL


'


Playing around with the width, height and extrusion. I managed to get some red lines to appear. So I think the problem should be the conversion between png to bw. 


 

Melvin Fooon December 29 2014 04:58 UTCReady for review

The work on this task is ready to be reviewed.

Sean on December 29 2014 09:29 UTCTask Closed

Congratulations, this task has been completed successfully.

Sean on December 29 2014 09:30 UTClooks like

Looks like you figured those issues out, glad to see it.