Model BRL-CAD logo in BRL-CAD #10BRL-CAD
Status: ClosedTime to complete: 100 hrs Mentors: Sean, IshwerdasTags: modeling, logo, CAD, design, 3d

The BRL-CAD Logo depicts two interlocked nodes. Modeling the new Logo in BRL-CAD in CSG (without NURBS, without polygons) requires some careful arrangement, but can provide an attractive three dimensional rendering that we can use for a number of purposes..

The output of this task will be a .g file of BRL-CAD logo and a rendered image. The two segments you model MUST be two or more regions hinged together (you can have center pins or not, you decide). This is your opportunity as an artist and 3D magician to come up with an interesting yet faithful interpretation.

References:

  • http://brlcad.org/images/angelov_256.png
  • http://brlcad.org/d/node/92
  • Introduction to MGED at http://brlcad.org/wiki/Documentation

Note that there are other logo modeling tasks and yours must start from scratch and be completely original. If we get a hint that yours was based off of or used measurements from some other model, you will be barred.

This command run within MGED should help give you an interesting render:

rt -A0.75 -s1024 -c \{set ambSamples=256\}

Uploaded Work
File name/URLFile sizeDate submitted
logo.g19.5 KBJanuary 11 2015 15:11 UTC
logo.png218.8 KBJanuary 11 2015 15:12 UTC
logo2.png91.6 KBJanuary 11 2015 15:12 UTC
Screenshot - 10.01.2015 - 18:30:40.png214.7 KBJanuary 11 2015 15:12 UTC
logo.g19.5 KBJanuary 12 2015 09:29 UTC
logo_finall.png203.0 KBJanuary 12 2015 09:30 UTC
logo.g19.5 KBJanuary 12 2015 10:37 UTC
logo_new.g20.6 KBJanuary 12 2015 10:39 UTC
logo_finall.png203.0 KBJanuary 12 2015 10:41 UTC
logo_new_finall.g21.0 KBJanuary 12 2015 14:00 UTC
logo_new_finall.g22.0 KBJanuary 12 2015 15:17 UTC
Comments
Raptoron January 11 2015 12:13 UTCTask Claimed

I would like to work on this task.

Deepak on January 11 2015 14:41 UTCTask Assigned

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

Raptoron January 11 2015 15:13 UTCReady for review

The work on this task is ready to be reviewed.

Sean on January 12 2015 05:31 UTCTask Needs More Work

One of the mentors has sent this task back for more work. Talk to the mentor(s) assigned to this task to satisfy the requirements needed to complete this task, submit your work again and mark the task as complete once you re-submit your work.

Sean on January 12 2015 05:36 UTCregions

Raptor, I noticed you have regions within regions -- this is a modeling error.  An object should only be marked a region if it's a combination that represents a single material shape/object.  For example, a nut and bolt are two separate regions.  If I create a "nut_and_bolt.c" combination that includes both the nut and the bolt, it should not be marked as a region.


The logo model itself looks alright except for the interconnection between the rings.  There are discontinuities where the subtracted cylinder creates sharp edges.


 

Raptoron January 12 2015 09:30 UTCReady for review

The work on this task is ready to be reviewed.

Daniel_R on January 12 2015 10:08 UTCThe problem with regions within regions still exists

and I'm missing a group containing everything which belongs to your logo design.

Daniel_R on January 12 2015 10:08 UTCTask Needs More Work

One of the mentors has sent this task back for more work. Talk to the mentor(s) assigned to this task to satisfy the requirements needed to complete this task, submit your work again and mark the task as complete once you re-submit your work.

Raptoron January 12 2015 10:35 UTCReady for review

The work on this task is ready to be reviewed.

Raptoron January 12 2015 10:38 UTC

Sorry mistakenly sent old

Daniel_R on January 12 2015 13:46 UTCYou should have used the other ones

Look at Sean's comment: "An object should only be marked a region if it's a combination that represents a single material shape/object." And you shouldn't use any other Boolean operation than "u" for groups (that's the one the mged "g" command creates).


I.e. good candidates for regions would be br_big and br_small as they represent independent shapes of one material/color.


And you should have one group containing everything belonging to your logo model.  This could include a light ond background too.

Daniel_R on January 12 2015 13:46 UTCTask Needs More Work

One of the mentors has sent this task back for more work. Talk to the mentor(s) assigned to this task to satisfy the requirements needed to complete this task, submit your work again and mark the task as complete once you re-submit your work.

Raptoron January 12 2015 14:00 UTCReady for review

The work on this task is ready to be reviewed.

Daniel_R on January 12 2015 15:02 UTCBetter

but you should calmly review your model.  There are regions within regions again, br_big and br_small have no color, and you should remove the region_id attribute from logo.

Daniel_R on January 12 2015 15:02 UTCTask Needs More Work

One of the mentors has sent this task back for more work. Talk to the mentor(s) assigned to this task to satisfy the requirements needed to complete this task, submit your work again and mark the task as complete once you re-submit your work.

Raptoron January 12 2015 15:18 UTCReady for review

The work on this task is ready to be reviewed.

Sean on January 12 2015 15:56 UTCTask Closed

Congratulations, this task has been completed successfully.