Strange boolean modifier result #36357

New Issue

Mike Cooper · 2013-08-02T22:06:13+02:00

Mike Cooper commented

2013-08-02 22:06:13 +02:00

Relates to: #30565

%%%Windows 7 (64) Home Premium
AMD Radeon HD 6290
Blender 2.67.0 r56945

The attached file contains a cube (with some extra stuff on one side) and a skewed cylinder that yield some odd shapes when you try to apply a boolean modifier (union) to them. Neither mesh contains any incorrect face normals, non manifold vertexes, duplicate vertexes or additional modifiers.

There were several similar bugs reported last year, but none of the fixes/work-arounds seem to work in this case. I have tried rotating the meshes, flipping the normals and other random adjustments to the meshes, but nothing works and still resembles the desired shape.

The console output shows these warnings & errors:
WARNING! <0.10369763696808246,-0.38730433583259583,0.072432532906532288>==<0.1036976369680824,-0.38730433583259583,0.072432532906532288>
WARNING! <0.1036976369680824,-0.38730433583259583,0.072432532906532288>==<0.10369763696808243,-0.38730433583259583,0.072432532906532288>
WARNING! <0.10369763696808243,-0.38730433583259583,0.072432532906532288>==<0.1036976369680824,-0.38730433583259583,0.072432532906532288>
WARNING! <0.1036976369680824,-0.38730433583259583,0.072432532906532288>==<0.10369763696808246,-0.38730433583259583,0.072432532906532288>
uncontained hole loop does not share vertices with any face loop!
uncontained hole loop does not share vertices with any face loop!
uncontained hole loop does not share vertices with any face loop!
uncontained hole loop does not share vertices with any face loop!%%%

**Relates to**: #30565 %%%Windows 7 (64) Home Premium AMD Radeon HD 6290 Blender 2.67.0 r56945 The attached file contains a cube (with some extra stuff on one side) and a skewed cylinder that yield some odd shapes when you try to apply a boolean modifier (union) to them. Neither mesh contains any incorrect face normals, non manifold vertexes, duplicate vertexes or additional modifiers. There were several similar bugs reported last year, but none of the fixes/work-arounds seem to work in this case. I have tried rotating the meshes, flipping the normals and other random adjustments to the meshes, but nothing works and still resembles the desired shape. The console output shows these warnings & errors: WARNING! <0.10369763696808246,-0.38730433583259583,0.072432532906532288>==<0.1036976369680824,-0.38730433583259583,0.072432532906532288> WARNING! <0.1036976369680824,-0.38730433583259583,0.072432532906532288>==<0.10369763696808243,-0.38730433583259583,0.072432532906532288> WARNING! <0.10369763696808243,-0.38730433583259583,0.072432532906532288>==<0.1036976369680824,-0.38730433583259583,0.072432532906532288> WARNING! <0.1036976369680824,-0.38730433583259583,0.072432532906532288>==<0.10369763696808246,-0.38730433583259583,0.072432532906532288> uncontained hole loop does not share vertices with any face loop! uncontained hole loop does not share vertices with any face loop! uncontained hole loop does not share vertices with any face loop! uncontained hole loop does not share vertices with any face loop!%%%

Mike Cooper commented

2013-08-02 22:06:13 +02:00

Changed status to: 'Open'

Alexander N. commented

2013-08-02 22:41:19 +02:00

%%%same on blender 2.68a and blender-2.68-r58816-win64.zip
windows 7 64bit, amd hd5670, the attached blend file

i also moved all objects to layer 1 and modes the cylinder a bit around...

CSG failed, exception extern\carve\lib\triangulator.cpp:899 "didn't manage to l
ink up hole!"
Unknown internal error in boolean
CSG failed, exception extern\carve\lib\triangulator.cpp:899 "didn't manage to l
ink up hole!"
Unknown internal error in boolean
CSG failed, exception extern\carve\lib\triangulator.cpp:899 "didn't manage to l
ink up hole!"
Unknown internal error in boolean
CSG failed, exception extern\carve\lib\triangulator.cpp:899 "didn't manage to l
ink up hole!"
Unknown internal error in boolean
WARNING! <0.095064102674340178,-0.38730433583259583,0.072432532906532288>==<0.09
5064102674340151,-0.38730433583259583,0.072432532906532288>
WARNING! <0.095064102674340151,-0.38730433583259583,0.072432532906532288>==<0.09
5064102674340123,-0.38730433583259583,0.072432532906532288>
WARNING! <0.095064102674340123,-0.38730433583259583,0.072432532906532288>==<0.09
5064102674340151,-0.38730433583259583,0.072432532906532288>
WARNING! <0.095064102674340151,-0.38730433583259583,0.072432532906532288>==<0.09
5064102674340178,-0.38730433583259583,0.072432532906532288>
uncontained hole loop does not share vertices with any face loop!
uncontained hole loop does not share vertices with any face loop!
uncontained hole loop does not share vertices with any face loop!%%%

%%%same on blender 2.68a and blender-2.68-r58816-win64.zip windows 7 64bit, amd hd5670, the attached blend file i also moved all objects to layer 1 and modes the cylinder a bit around... CSG failed, exception extern\carve\lib\triangulator.cpp:899 "didn't manage to l ink up hole!" Unknown internal error in boolean CSG failed, exception extern\carve\lib\triangulator.cpp:899 "didn't manage to l ink up hole!" Unknown internal error in boolean CSG failed, exception extern\carve\lib\triangulator.cpp:899 "didn't manage to l ink up hole!" Unknown internal error in boolean CSG failed, exception extern\carve\lib\triangulator.cpp:899 "didn't manage to l ink up hole!" Unknown internal error in boolean WARNING! <0.095064102674340178,-0.38730433583259583,0.072432532906532288>==<0.09 5064102674340151,-0.38730433583259583,0.072432532906532288> WARNING! <0.095064102674340151,-0.38730433583259583,0.072432532906532288>==<0.09 5064102674340123,-0.38730433583259583,0.072432532906532288> WARNING! <0.095064102674340123,-0.38730433583259583,0.072432532906532288>==<0.09 5064102674340151,-0.38730433583259583,0.072432532906532288> WARNING! <0.095064102674340151,-0.38730433583259583,0.072432532906532288>==<0.09 5064102674340178,-0.38730433583259583,0.072432532906532288> uncontained hole loop does not share vertices with any face loop! uncontained hole loop does not share vertices with any face loop! uncontained hole loop does not share vertices with any face loop!%%%

Alexander N. commented

2013-08-02 22:45:08 +02:00

%%%... i meant i "moved" the cylinders position back and fore. %%%

Sergey Sharybin commented

2013-08-14 21:51:19 +02:00

%%%Interesting case. Not sure why t happens, but forkaround for now seems to triangulate the mesh (or at least NGons).

Will need some time to find an actual fix for the issue.%%%

%%%Interesting case. Not sure why t happens, but forkaround for now seems to triangulate the mesh (or at least NGons). Will need some time to find an actual fix for the issue.%%%

Sergey Sharybin commented

2013-09-02 15:02:47 +02:00

%%%Checked on the issue, and it appears to be caused by tesselation of NGons not happening too much friendly for boolean modifier - it creates one degenerated (zero-sized) face. We might trying being smarter and do better triangulation, but it'll make boolean even slower. Real solution for the issue is to support ngons in boolean modifier, which is already in our TODO list.

So thanks for the report, but it's more a TODO than actual bug.%%%

%%%Checked on the issue, and it appears to be caused by tesselation of NGons not happening too much friendly for boolean modifier - it creates one degenerated (zero-sized) face. We might trying being smarter and do better triangulation, but it'll make boolean even slower. Real solution for the issue is to support ngons in boolean modifier, which is already in our TODO list. So thanks for the report, but it's more a TODO than actual bug.%%%

Sergey Sharybin commented

2013-09-02 15:02:48 +02:00

Changed status from 'Open' to: 'Archived'

Sergey Sharybin closed this issue

2013-09-02 15:02:48 +02:00

Sign in to join this conversation.

No Label

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

Strange boolean modifier result #36357