Reference struct members by name instead relying on their order.
This also simplifies moving back to named members when all compilers
we use support them.
A previous commit, c56526d8b6, which sometimes didn't drop offsets
into 'in plane' faces, as a fix to T71329, was overly aggressive.
If all the intermediate edges are in the same plane then it is fine
to just put the meeting point on the plane of the start and end edges.
Sometimes the `use_partial_connect` option could trigger the assert:
```
BLI_assert(!BM_elem_flag_test(l_iter->v, VERT_NOT_IN_STACK));
```
This can happen when `v_delimit->e` is not part of edgenet, so `v_other` will not have the flag.
Creating some primitives allows for a scale value (via python) that will
scale the object accordingly. For objects with a radius parameter
(like cylinders, spheres, etc.) passing a scale different to (1,1,1)
would result in unexpected behavior.
For example:
`>>> bpy.ops.mesh.primitive_uv_sphere_add(radius=2, scale=(1,1,2))`
We would expect this to create a sphere with a radius of 2
(dimensions 4,4,4) and then be scaled *2 along the z-axis
(dimensions 4,4,8). But this would previously create a scaled sphere
with dimensions (2,2,4).
The scale was simply divided by two. Maybe because the "radius"
parameter for creating the primitives was confusingly named "diameter"
(but used as the radius).
The fix adds a scale parameter to `ED_object_new_primitive_matrix`
and also renames the wrongly named "diameter" parameters to "radius".
Reviewed By: campbellbarton
Maniphest Tasks: T84638
Ref D10093
This changes the search for unprocessed faces to only search
from the previously found face. Local testing on 1.5 million
triangle meshes gives a 75x speedup
(of the code affected, which is the first half of the work).
The former code would traverse all faces of a mesh until a face was
found that had not been processed. This ended up being slow mainly
because it had to load face-data to determine the state of the flag.
Secondarily, the way it iterated and marked the mesh, it would end up
traversing all previously processed faces to find and unprocessed one.
The same optimization has been made for edge-group calculation.
Reviewed By: campbellbarton
Ref D12379
This reverts commit 41e6509818.
This broke "CubeMaskFirst" test.
Any value even slightly outside the [-1.0..1.0] range
caused the result to be nan, which can happen when calculating
the dot-product between two unit length vectors.
Caused by fix for T90256 and a misunderstanding in D11928.
Don't skip tagging edges when the auto-smooth angle is 180 degrees
since this skips topology checks which are needed for properly
calculating edge loop normals.
Vertices with no connected faces would attempt to divide by the combined
face area causing a divide by zero.
Use the same weight for wire vertices as vertices connected
to zero area faces.
This makes the internal naming consistent with the public API. And also gives
us a visibility_flag rather than restrictflag that can be extended with more
flags.
This BMesh iterator hadn't been used in C++ code yet, and needed
a macro for a proper cast. The parameter structs need to be initialized
when declared without designated initializers.
Six years ago, Bug T44961 about unwanted spikes had me not do a loop
slide if the angle was too extreme, to avoid unwanted spikes.
The current bug showed that that angle was much too big, and limited
desired behavior in many cases. Changing the angle from 0.25 radians
to 0.0001 radians (about 0.006 degrees) still fixes the original bug
and seems very unlikely to be limiting desired behavior now.
Share functionality for single and multi-threaded edge-split tagging.
Remove logic that ensured vert & loop indices in bm_mesh_edges_sharp_tag
(missing from fd9fc809b7).
This was added in 0b7f581397
but seems not to be needed as the assignment was never correct
since only one corner on either side of the smooth edge had the
vertex normal written to it.
Merge the sharp edge tagging into bm_mesh_loops_calc_normals,
this has the advantage that edge tagging can be performed as part of
walking over each vertices edges - instead of tagging in a separate loop.
Even though this will tag edges twice (once for each vertex),
the computation isn't heavy as it's only calculating a dot-product
between the two face users to compare the angle.
This change combined with 4ba06ad0a8
makes BM_loops_calc_normal_vcos around 5.68x faster,
with an overall speedup over 2.6x when transforming a high poly mesh.
(tested on a system with 32 cores).
Reviewed By: mont29
Ref D11970
Supported multi-threading for bm_mesh_loops_calc_normals.
This is done by operating on vertex-loops instead of face-loops.
Single threaded operation still loops over faces since iterating
over vertices adds some overhead in the case of custom-normals
as the order used for accessing loops must be the same as iterating
of a faces loops.
From isolated timing tests of bm_mesh_loops_calc_normals on high
poly models, this gives between 3.5x to 10x speedup,
with larger gains for meshes with custom-normals.
NOTE: this is part one of two patches for multi-threaded auto-smooth,
tagging edges as sharp is still single threaded.
Reviewed By: mont29
Ref D11928
