Bugs item #3475498, was opened at 2012-01-18 05:35
Message generated for change (Comment added) made by john-gci
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=640802&aid=3475498&group_id=105292
Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: Analysis
Group: serious bug / no workaround
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Tom Browder (tbrowder2)
Assigned to: Nobody/Anonymous (nobody)
Summary: analyze doesn't show NO PLANE for an improper rpp
Initial Comment:
The attached g file has an rpp with one edge shortened to create a non-planar
face. When analyze is run on it, the result is as if all faces were planar.
the output follows:
rpp_skew.s: ARB8
1 (9, 0, 0)
2 (10, 10, 0)
3 (10, 10, 10)
4 (10, 0, 10)
5 (0, 0, 0)
6 (0, 10, 0)
7 (0, 10, 10)
8 (0, 0, 10)
------------------------------------------------------------------------------
| FACE | ROT FB | PLANE EQUATION | SURFACE AREA |
|------|---------------|----------------------------------|------------------|
| 1234 | 354.28940686 0.00000000 | 0.99503719 -0.09950372 0.00000000
8.95533471 | 100.49875621 |
| 5678 | 180.00000000 -0.00000000 | -1.00000000 -0.00000000 -0.00000000
-0.00000000 | 100.00000000 |
| 1584 | 270.00000000 -0.00000000 | -0.00000000 -1.00000000 -0.00000000
-0.00000000 | 95.00000000 |
| 2376 | 90.00000000 -0.00000000 | -0.00000000 1.00000000 -0.00000000
10.00000000 | 100.00000000 |
| 1265 | 0.00000000 -90.00000000 | -0.00000000 0.00000000 -1.00000000
-0.00000000 | 95.00000000 |
| 4378 | 0.00000000 90.00000000 | 0.00000000 -0.00000000 1.00000000 10.00000000
| 100.00000000 |
------------------------------------------------------------------------------
| EDGE LEN | EDGE LEN | EDGE LEN | EDGE LEN |
|----------------|----------------|----------------|----------------|
| 12 10.04987562 | 23 10.00000000 | 34 10.00000000 | 14 10.04987562
|
| 15 9.00000000 | 56 10.00000000 | 26 10.00000000 | 67 10.00000000 |
| 78 10.00000000 | 58 10.00000000 | 48 10.00000000 | 37 10.00000000
|
---------------------------------------------------------------------
| Volume = 966.66666667 Surface Area = 590.49875621 |
| 0.00025537 gal |
-----------------------------------------------------------------
Looking at the code it seems that only 3 face points are used to check for
planarity, thus the test should never fail (unless 2 points are coincident).
If the intent is to be robust, the code I guess is fine, but the man page
should state that.
----------------------------------------------------------------------
Comment By: John (john-gci)
Date: 2012-12-20 07:52
Message:
For GCI effects, I managed to reproduce this bug with the same commands in
the VM from BRL-CAD.
----------------------------------------------------------------------
You can respond by visiting:
https://sourceforge.net/tracker/?func=detail&atid=640802&aid=3475498&group_id=105292
------------------------------------------------------------------------------
LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial
Remotely access PCs and mobile devices and provide instant support
Improve your efficiency, and focus on delivering more value-add services
Discover what IT Professionals Know. Rescue delivers
http://p.sf.net/sfu/logmein_12329d2d
_______________________________________________
BRL-CAD Tracker mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/brlcad-tracker
