Custom Loop Normals are normally encoded relative to the default
normals, similar to normal maps, allowing them to naturally follow
mesh deformations. Changes to mesh topology however often result
in nonsensical effects that are not desired.
The Remove Doubles operation especially (now known as Merge By
Distance) is intended as a purely topological operation, and
definitely should not change the vector of the custom normals.
This patch implements that behavior by converting the relative
encoding into an absolute vector layer for the duration of the
operation. It also modifies other Merge types in this way for
consistency, the Rip operator as their inverse counterpart;
and also Delete, Dissolve, Connect Path and Knife operators
as other examples more related to topology than shape.
On the technical side, this ports mesh_normals_loop_custom_set
to BMesh, and then uses a temporary Custom Data layer to store
the normals as vectors for the duration of the above mentioned
operations. When the normals are converted back to custom data,
the caller can choose whether to mark edges as sharp to preserve
distinct normals, or just average them instead. All but Remove
Doubles choose to average for now.
Differential Revision: https://developer.blender.org/D4994
This is related to T76659.
This just renames data type names to `CD_PROP_STRING`, `CD_PROP_FLOAT`
and `CD_PROP_INT32`. It makes them a bit more specific and removes
unnecessary abbreviations.
Reviewers: brecht
Differential Revision: https://developer.blender.org/D7980
Using remove double wasn't reliable as the matrix argument
could cause vertices to be further apart than the threshold allowed for.
This happened when adding cones using the new add tool.
This resolves a performance regression in 2.8x where every edit-mode
update performed an edit-mesh to mesh conversion.
Now the conversion will be lazily initialized if/when it's required.
New BKE_mesh_wrapper_* functions abstract over mesh data access.
Currently only edit-mesh and regular meshes are supported.
In the future sub-surface meshes may be supported too.
The `BM_mesh_bm_to_me()` function copies shape keys from the BMesh to
the Mesh. However, it tries to copy the same number of shape keys as are
defined on the target mesh. Since the target mesh does not necessarily
have the same number of shape keys as the BMesh, this would crash if the
target Mesh has more.
Found while performing some tests for {D7785}.
Differential Revision: https://developer.blender.org/D7818
Reviewed by: brecht
Don't use the cube corner special case when the offsets are different
for the three edges involved. The generic VMesh for this situation isn't
perfect, but it's much better than a failed cube corner VMesh.
Tests pass.
Don't use the cube corner special case when the offsets are different
for the three edges involved. The generic VMesh for this situation isn't
perfect, but it's much better than a failed cube corner VMesh.
Tests pass.
Surrounding includes with an 'extern "C"' block is not necessary anymore.
Also that made it harder to add any C++ code to some headers, or include headers
that have "optional" C++ code like `MEM_guardedalloc.h`.
I tested compilation on linux and windows (and got help from @LazyDodo).
If this still breaks compilation due to some linker error, the header containing
the symbol in question is probably missing an 'extern "C"' block.
Differential Revision: https://developer.blender.org/D7653
Was flipping around the 0-1 range, now (optionally) flip around each tile.
Also added this option for BMesh bmo_mirror.
Reviewed By: campbellbarton
Maniphest Tasks: T75793
Differential Revision: https://developer.blender.org/D7460
Starting select linked failed when the selected vertex or edge
was it's self delimiting.
Support using these elements for linked select
as long as they're part of an isolated selection.
Note this only changes cases where the variable was declared inside
the for loop. To handle it outside as well is a different challenge.
Differential Revision: https://developer.blender.org/D7320
While it might be handy to have type-less functionality which is
similar to how C++ math is implemented it can not be easily achieved
with just preprocessor in a way which does not have side-effects on
wrong usage.
There macros where often used on a non-trivial expression, and there
was at least one usage where it was causing an actual side effect/bug
on Windows (see change around square_f(sh[index++]) in studiolight.c).
For such cases it is handy to have a function which is guaranteed to
have zero side-effects. The motivation behind actually removing the
macros is that there is already a way to do similar calculation. Also,
not having such macros is a way to guarantee that its usage is not
changed in a way which have side-effects and that it's not used as an
inspiration for cases where it should not be used.
Differential Revision: https://developer.blender.org/D7051
- Use 'BKE_object_defgroup' prefix for object functions.
- Rename 'defvert_verify_index' to 'defvert_ensure_index'
since this adds the group if it isn't found.
When beveling architectural objects like baseboards or crown mouldings that
may consist of multiple islands, it's useful if the orientation is at least
conistent.
This changes the arbitrary decision of how the orientation should start at a
chain beginning to use the highest side of the profile in the Z direction.
Reviewed By: howardt
Differential Revision: https://developer.blender.org/D6946
