**Empty Slot Fix**
Currently the boolean modifier transfers the default material from
meshes with no materials and empty material slots to the faces on the
base mesh. I added this in a2d59b2dac for the sake of consistency,
but the behavior is actually not useful at all. The default empty
material isn't chosen by users, it just signifies "nothing," so when
it replaces a material chosen by users, it feels like a bug.
This commit corrects that behavior by only transferring materials from
non-empty material slots. The implementation is now consistent between
exact mode of the boolean modifier and the geometry node.
**Index-Based Option**
"Index-based" is the new default material method for the boolean
modifier, to access the old behavior from before the breaking commit.
a2d59b2dac actually broke some Boolean workflows fundamentally, since
it was important to set up matching slot indices on each operand. That
isn't the cleanest workflow, and it breaks when materials change
procedurally, but historically that hasn't been a problem. The
"transfer" behavior transfers all materials except for empty slots,
but the fundamental problem is that there isn't a good way to specify
the result materials besides using the slot indices.
Even then, the transfer option is a bit more intuitive and useful for
some simpler situations, and it allows accessing the behavior that has
been in 3.2 and 3.3 for a long time, so it's also left in as an option.
The geometry node doesn't get this new option, in the hope that we'll
find a better solution in the future.
Differential Revision: https://developer.blender.org/D16187
This patch adds a 'Intersecting Edges' output with a boolean selection
that only gives you the new edges on intersections.
Will work on a couple of examples next, this should make some
interesting effects possible (including getting us closer to the "bevel-
after-boolean-usecase")
To achieve this, a Vector is passed to `direct_mesh_boolean` when the
iMesh is still available (and intersecting edges appended), then from
those edge indices a selection will be stored as attribute.
Differential Revision: https://developer.blender.org/D15151
Use a shorter/simpler license convention, stops the header taking so
much space.
Follow the SPDX license specification: https://spdx.org/licenses
- C/C++/objc/objc++
- Python
- Shell Scripts
- CMake, GNUmakefile
While most of the source tree has been included
- `./extern/` was left out.
- `./intern/cycles` & `./intern/atomic` are also excluded because they
use different header conventions.
doc/license/SPDX-license-identifiers.txt has been added to list SPDX all
used identifiers.
See P2788 for the script that automated these edits.
Reviewed By: brecht, mont29, sergey
Ref D14069
- Added space below non doc-string comments to make it clear
these aren't comments for the symbols directly below them.
- Use doxy sections for some headers.
- Minor improvements to doc-strings.
Ref T92709
The main goal here is to remove the need for a C API to the code in
`mesh_boolean_convert.cc`. This is achieved by moving `MOD_boolean.c`
to C++ and making the necessary changes for it to compile. On top of
that there are some other slight simplifications possible to the
direct mesh boolean code: it doesn't need to copy the material
remaps, and the modifier code can use some other C++ types directly.
