Crash: TriangulateNonPlanarQuads (v506)

Not sure what’s going on here, but I’m getting freezing during TriangulateNonPlanarQuads on a very simple model and need to force quit.

In a larger model, of which this rectangular plane is a part, I got hung up in the dialog boxes—it would not Discard Change or accept OK, so I had to force quit Rhino. I believe I backspaced a value out of the entry field to get the “” invalid message?

Then, TNPQ worked for other parts of the mesh, but not this one which I’ve isolated—a small polygon segment in the image below (with file attached). It appears valid under What. I selected the object and issued TriangulateNonPlanarQuads. It immediately beach balls the program. After about two minutes I get the same dialog box as above, which I can’t dismiss. Must force-quit application.

Figured you might want to know.

Test_Fail_Triangulate.3dm (32.9 KB)

Software information

Software versions
Rhinoceros version: 5.0 Wenatchee 2014-03-17 (506)
OS X version: Version 10.7.5 (Build 11G63)


Hardware information

Computer hardware
Hardware model: MacBookPro8,3
Processor: Intel Core i7-2860QM CPU @ 2.50GHz
Memory: 16 GB
Architecture: Intel 64 bit

Video hardware
Graphics: AMD Radeon HD 6770M 1024 MB
Memory: 1024 MB
Screen size: 1920 x 1200, 1920 x 1200
Displays: Cinema HD, Color LCD

USB devices
Apple Inc.: FaceTime HD Camera (Built-in)
Logitech: USB Receiver
Apple Inc.: Apple Internal Keyboard / Trackpad
Apple Inc.: Bluetooth USB Host Controller
Western Digital: My Passport 0730
Apple Inc.: iPhone
Apple Computer, Inc.: IR Receiver

Bluetooth devices

OpenGL information

OpenGL software
OpenGL version: 2.1 ATI-7.32.12
Render version: 2.1
Shading language: 1.20
Maximum texture size: 16384 x 16384
Z-buffer depth: 24 bits
Maximum viewport size: 16384 x 16384

Implementation settings
Use texture compression: No

Appearance settings
Antialiasing: 4x
Mip map filtering: None
Anisotropic filtering: None

Thanks for the information.
I am able to duplicate the crash, so I will post it for the developer.
I did get the beach ball! Great description.
Mary Fugier
McNeel Technical Support

BTW the crash happens in Rhino 5 for Windows, too.
But Rhino checks it as a valid mesh.
I will be report it.
Thanks for the file.
Mary Fugier

Many thanks, Mary!

It’s good to know that being overly descriptive appears to have some benefits once in a blue moon. :wink: