* Skip calculation of merge indices if merging isn't enabled
* Clean up usage of BMesh operators to fix small memory leak
* Fix harmless BLI_assert in CustomData_bmesh_merge
* Another null-initialization fix in CustomData_bmesh_merge
Two fixes:
* The find-doubles operator was overriding the "dirty" element
indices, so vertices were not being mapped correctly.
* In some cases a vertex can be set to merge with a vertex that is
also set to be merged, so added a loop to find the first unmerged
vert in this case.
Not yet working is the "First Last" merge option.
Also made some cleanups and added comments in the array/remove doubles
code.
* An offset object can rotate output, so need to update normals to
reflect that. Fix by adding a normals recalc, but only if there's an
offset object.
* Added BMESH_TODO comment to check whether there are other cases were
normals need to be updated.
* This patch adds a influence slider for the lattice modifier, which affects the strength of the deformation.
Patch by Patrick Boelens (senshi), thanks a lot!
Not all file formats/calls are supported yet. It will be expended.
Please from now on use BLI_fopen, BLI_* for file manipulations.
For non-windows systems BLI_fopen just calls fopen.
For Windows, the utf-8 string is translated to utf-16 string in order to call UTF version of the function.
CDDM_tessfaces_to_faces wasbt updating the polyindex (missed incrementing the polyindex pointer).
also added an assert so non release builds will complain when CDDM_calc_edges_tessface() needs to run before CDDM_tessfaces_to_faces().
Should also fix [#30266], [#29451], and partly [#30316].
Here are the changes made by this commit:
* It adds a "dirty" flag to DerivedMesh struct (for now, only DM_DIRTY_TESS_CDLAYERS, but more might be added as needed).
* It adds a new func, DM_update_tessface_data, which assumes tessfaces themselves are valid, but updates tessellated customdata from their poly/loop counter parts.
* At end of modstack, when valid tessellated faces are present in finaldm , but the cdlayers dirty flag is set, call that function (instead of recomputing the whole tessellation).
* Edits to the codes concerned (UVProject, DynamicPaint, and Subsurf modifiers).
* Also add to subsurf dm generation code the creation of a CD_POLYINDEX layer (mandatory for DM_update_tessface_data to work well, and imho all tessellated dm should have one).
Note: some pieces of old code are just #if 0’ed, will clean them later.
this is no big improvement but at least its not a regression.
using the new operator for the bevel modifier can be enabled again be uncommenting a define.
This idea is borrowed from the multires modifier, which already
checked if the object was in sculpt mode and, if so, created the
PBVH. That check is now moved higher up the chain into
mesh_build_data(), so that it occurs for CDDerivedMesh too.
This also replaces an assert in cdDM_getPBVH for tesselated mesh faces
with a call to create them if missing.
* made bmesh_structure.h function names more consistant.
* remove unused code in bmesh_structure.c
* removed 'Edge Flip' operator (missing from bmesh but looked into trunk feature and dont think its worth keeping).
* tagged some BMESH_TODO's
rather then recalc polygon normals - solidify is simple enough to just flip the normals of the copied faces, the rim faces normals are already re-calculated so copy them.
Don't really know why, but appears we need to recalc normals when this option is ON.
Also small perf improvement (avoid to compute twice each face normals).
* better type safety for BM_elem_flag_* and BM_elem_index_* functions.
* add BMElem type to be used where BMFace/Edge/Vert/Loop can be interchanged.
* fix bug in select manifold, found when making functions more strict.
* change BMO_elem_flag_* defines to inline functions.
* BMO_slot_map_insert() is too big for an inline function - un-inline it.
* remove redundant casts.
