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Fix T83119: Crash with topology mirror affecting a hidden vertex 

Caused by rBba97da21acf2.

For non-topology mirror hidden verts were never respected/included in
EDBM_verts_mirror_cache_begin (they were excluded from the kdtree).

Prior to said commit, hidden mirrored verts that were still in the map
would have been excluded in a separate loop over vertices in
'editmesh_mirror_data_calc()' by checking BM_ELEM_HIDDEN. Due to the new
nature of this function this check was now moved to
EDBM_verts_mirror_cache_begin.

Maniphest Tasks: T83119

Differential Revision: https://developer.blender.org/D9673
This commit is contained in:
Philipp Oeser 2020-11-30 16:45:47 +01:00
parent e4204a3979
commit da8dc204bd
Notes: blender-bot 2023-02-13 20:24:56 +01:00 
Referenced by commit 12792ee70c, Fix T83788: Topology mirror crashes for vertices aren't mirrored
Referenced by issue #83119, The application crashes (vanishes) when a topology mirror (or at least an X topology mirror) needs to move a hidden vertex.
1 changed files with 3 additions and 0 deletions
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3
source/blender/editors/mesh/editmesh_utils.c
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@ -1139,6 +1139,9 @@ void EDBM_verts_mirror_cache_begin_ex(BMEditMesh *em,
if (use_topology) {
v_mirr = cache_mirr_intptr_as_bmvert(mesh_topo_store.index_lookup, i);
if (respecthide && BM_elem_flag_test(v_mirr, BM_ELEM_HIDDEN)) {
v_mirr = NULL;
}
}
else {
int i_mirr;