Model a C using BRL-CADBRL-CAD
Status: ClosedTime to complete: 48 hrs Mentors: SeanTags: 3d model, graphics, geometry

Create an uppercase letter "C" geometry model using BRL-CAD. You can use the mged or archer geometry editor tools or write a script. The model should be roughly 1000mm tall, about 500mm wide, and about 100mm deep. Create it using CSG or other methods, but it cannot be an imported model, polygonal mesh (BOT, NMG), or extruded bitmap (EBM).

It should be free of modeling errors (no overlaps, run "rtcheck" to verify). It should have interesting shader properties set (suggest stack+plastic+texture), default shader will not be accepted. Provide the .g geometry file and a 1024x1024 rendering at a "ae 35 25" view to show what it looks like.

References:

Uploaded Work
File name/URLFile sizeDate submitted
capC.g5.7 KBDecember 01 2012 04:04 UTC
Uppercase_C.png68.8 KBDecember 01 2012 04:04 UTC
Uppercase_C2.png98.9 KBDecember 01 2012 05:46 UTC
capC.g13.0 KBDecember 01 2012 05:46 UTC
C_revised.png257.3 KBDecember 02 2012 02:05 UTC
C.g3.7 KBDecember 02 2012 02:07 UTC
C_revised2.png242.1 KBDecember 02 2012 03:34 UTC
Comments
Darko Stojanovon November 27 2012 16:22 UTCTask Claimed

I would like to work on this task.

Harmanpreet Singh on November 27 2012 16:22 UTCTask Assigned

This task has been assigned to Darko Stojanov. You have 48 hours to complete this task, good luck!

Melange on November 29 2012 16:22 UTCInitial Deadline passed

Melange has detected that the initial deadline has passed and it has set the task status to ActionNeeded. The student has 24 hours to submit the work before the task is reopened and sent back to the pool for other students to claim.

Harmanpreet Singh on November 29 2012 16:42 UTCAsk questions if needed

As you are notified that the initial deadline has just passed and you have only 24 hours to submit your work, I would suggest in case of any trouble you can ask questions here or on our IRC channel. Our IRC address: irc://freenode/brlcad


Best of luck :)





Melange on November 30 2012 16:22 UTCTask Reopened

Melange has detected that the final deadline has passed and it has reopened the task.

javamonnon November 30 2012 22:26 UTCTask Claimed

I would like to work on this task.

Sean on December 1 2012 01:46 UTCTask Assigned

This task has been assigned to javamonn. You have 48 hours to complete this task, good luck!

javamonnon December 1 2012 04:05 UTCReady for review

The work on this task is ready to be reviewed.

Sean on December 1 2012 04:58 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 December 1 2012 04:58 UTCdifferent shader

So that's an interesting combination of colors on the checker shader, but you can't see the shape.  Try using the stack shader with checker and plastic.


 

javamonnon December 1 2012 05:46 UTCReady for review

The work on this task is ready to be reviewed.

javamonnon December 1 2012 05:47 UTCTweaked it a bit.

Hopefully this is better. Certainly easier to see. Let me know if you would prefer any other changes.

Sean on December 1 2012 05:55 UTCstill flat

That's still flat.  Note that the order you stack shaders matters.  You stacked plastic before checker.   You need to stack it after.


Assuming you fix that, the next problem is the shape.  That doesn't exactly look like a C.  A C isn't just half a circle cut in half.

Sean on December 1 2012 05:55 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.

javamonnon December 2 2012 02:08 UTCReady for review

The work on this task is ready to be reviewed.

javamonnon December 2 2012 02:09 UTCChanges...

Reworked the model, changed the orientation of the model, and changed the order in which the shaders were applied. Let me know if any further changes should be made.


Thanks, 


Daniel

Sean on December 2 2012 02:44 UTClooking better

That's looking much better but you went from too much cut out of the C to too little.  Look at the C's in the font on this page even (your "Changes..." for example).  Notice how the C is cut around 1:30 and 5:30 on the face of a clock and cut at an angle.  You can edit the arb8 you're subtracting from the C and raise/lower the top/bottom face and then move the outside two edges to get a different angle.


 

Sean on December 2 2012 02:45 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.

javamonnon December 2 2012 03:35 UTCReady for review

The work on this task is ready to be reviewed.

Sean on December 2 2012 05:02 UTCTask Closed

Congratulations, this task has been completed successfully.

Sean on December 2 2012 05:04 UTCrevisions

Very nice work javamonn!  Took a few revisions, but that looks great now.