Remove Doubles produces holes in mesh #56074

New Issue

Jacob · 2018-07-21T19:41:06+02:00

Jacob commented

2018-07-21 19:41:06 +02:00

System Information
Mac OSX 10.13.4, AMD Radeon R9 M370X 2048 MB
Intel Iris Pro 1536 MB (But I've seen this error on other OSs too).

Blender Version
Broken: 2.79b f4dc9f9
Worked: 2.79 5bd8ac9

When I "remove doubles" on an imported OBJ file, it inappropriately removes some faces, leaving holes in the mesh. This does not happen on older versions of blender (2.79b vs. 2.79)

Load the attached OBJ file.
Switch to edit mode.
With all vertices selected, click on Remove Doubles in the Tools shelf.
The mesh now has holes.

protein_nucleic_surf_A.mtl

protein_nucleic_surf_A.obj

**System Information** Mac OSX 10.13.4, AMD Radeon R9 M370X 2048 MB Intel Iris Pro 1536 MB (But I've seen this error on other OSs too). **Blender Version** Broken: 2.79b f4dc9f9 Worked: 2.79 5bd8ac9 When I "remove doubles" on an imported OBJ file, it inappropriately removes some faces, leaving holes in the mesh. This does not happen on older versions of blender (2.79b vs. 2.79) 1. Load the attached OBJ file. 2. Switch to edit mode. 3. With all vertices selected, click on Remove Doubles in the Tools shelf. 4. The mesh now has holes. [protein_nucleic_surf_A.mtl](https://archive.blender.org/developer/F4008151/protein_nucleic_surf_A.mtl) [protein_nucleic_surf_A.obj](https://archive.blender.org/developer/F4008150/protein_nucleic_surf_A.obj)

Jacob commented

2018-07-21 19:41:06 +02:00

Added subscriber: @jdurrant

Bastien Montagne commented

2018-07-26 17:46:53 +02:00

Added subscribers: @ideasman42, @mont29

Campbell Barton was assigned by Bastien Montagne

2018-07-26 17:46:53 +02:00

Bastien Montagne commented

2018-07-26 17:46:53 +02:00

Not sure whether @ideasman42 wants to have a look here… That mesh has terrible geometry I think, but on the other hands remove doubles code generates a lot of asserts like that:

/usr/lib/x86_64-linux-gnu/libasan.so.4(+0x54741) [0x7f76578d4741]
./bin/blender(BLI_system_backtrace+0x9b) [0x55fff2da0a92]
./bin/blender(+0x536311a) [0x55fff1b5b11a]
./bin/blender(bmo_find_doubles_exec+0x45) [0x55fff1b5b57e]
./bin/blender(BMO_op_exec+0x112) [0x55fff17f0040]
./bin/blender(+0x40c9505) [0x55fff08c1505]
./bin/blender(+0x34b1c1b) [0x55ffefca9c1b]
./bin/blender(+0x34b2bd1) [0x55ffefcaabd1]
./bin/blender(WM_operator_name_call_ptr+0x116) [0x55ffefcaae32]
./bin/blender(+0x3da31f3) [0x55fff059b1f3]
./bin/blender(+0x3deca92) [0x55fff05e4a92]
./bin/blender(+0x34ac574) [0x55ffefca4574]
./bin/blender(+0x34b79ff) [0x55ffefcaf9ff]
./bin/blender(+0x34b7ffe) [0x55ffefcafffe]
./bin/blender(wm_event_do_handlers+0xa66) [0x55ffefcb27af]
./bin/blender(WM_main+0x30) [0x55ffefc98c55]
./bin/blender(main+0xb32) [0x55ffefc8e4f6]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7) [0x7f764e268b17]
./bin/blender(_start+0x2a) [0x55ffefc8d78a]
BLI_assert failed: /home/i74700deb64/blender/__work__/src/source/blender/bmesh/operators/bmo_removedoubles.c:622, bmesh_find_doubles_common(), at '(((duplicates[duplicates[i]]) == (-1)) || ((duplicates[duplicates[i]]) == (duplicates[i])))'

Not sure whether @ideasman42 wants to have a look here… That mesh has terrible geometry I think, but on the other hands remove doubles code generates a lot of asserts like that: ``` /usr/lib/x86_64-linux-gnu/libasan.so.4(+0x54741) [0x7f76578d4741] ./bin/blender(BLI_system_backtrace+0x9b) [0x55fff2da0a92] ./bin/blender(+0x536311a) [0x55fff1b5b11a] ./bin/blender(bmo_find_doubles_exec+0x45) [0x55fff1b5b57e] ./bin/blender(BMO_op_exec+0x112) [0x55fff17f0040] ./bin/blender(+0x40c9505) [0x55fff08c1505] ./bin/blender(+0x34b1c1b) [0x55ffefca9c1b] ./bin/blender(+0x34b2bd1) [0x55ffefcaabd1] ./bin/blender(WM_operator_name_call_ptr+0x116) [0x55ffefcaae32] ./bin/blender(+0x3da31f3) [0x55fff059b1f3] ./bin/blender(+0x3deca92) [0x55fff05e4a92] ./bin/blender(+0x34ac574) [0x55ffefca4574] ./bin/blender(+0x34b79ff) [0x55ffefcaf9ff] ./bin/blender(+0x34b7ffe) [0x55ffefcafffe] ./bin/blender(wm_event_do_handlers+0xa66) [0x55ffefcb27af] ./bin/blender(WM_main+0x30) [0x55ffefc98c55] ./bin/blender(main+0xb32) [0x55ffefc8e4f6] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7) [0x7f764e268b17] ./bin/blender(_start+0x2a) [0x55ffefc8d78a] BLI_assert failed: /home/i74700deb64/blender/__work__/src/source/blender/bmesh/operators/bmo_removedoubles.c:622, bmesh_find_doubles_common(), at '(((duplicates[duplicates[i]]) == (-1)) || ((duplicates[duplicates[i]]) == (duplicates[i])))' ```

blender-admin commented

2018-07-27 02:51:42 +02:00

This issue was referenced by 71564debf9

This issue was referenced by 71564debf919d9ac99387359e9a07195bf0d94ff

Campbell Barton commented

2018-07-27 02:55:38 +02:00

Changed status from 'Open' to: 'Resolved'

Campbell Barton closed this issue

2018-07-27 02:55:38 +02:00

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Remove Doubles produces holes in mesh #56074