The main issue of 'type-less' standard C allocations is that there is no check on
allocated type possible.
This is a serious source of annoyance (and crashes) when making some
low-level structs non-trivial, as tracking down all usages of these
structs in higher-level other structs and their allocation is... really
painful.
MEM_[cm]allocN<T> templates on the other hand do check that the
given type is trivial, at build time (static assert), which makes such issue...
trivial to catch.
NOTE: New code should strive to use MEM_new (i.e. allocation and
construction) as much as possible, even for trivial PoD types.
Pull Request: https://projects.blender.org/blender/blender/pulls/136134
This makes the read and write API functions match more closely, and adds
asserts to check that the data size is as expected.
There are still a few places remaining that use BLO_read_data_address
and similar generic functions, these should eventually be replaced as well.
Pull Request: https://projects.blender.org/blender/blender/pulls/120994
This PR adds an option to specify custom colors for a
motion path. One for frames before the current frame
and one frame for after. With this it is easier to see
the relation of the motion path to the current frame.
That was already the case with the default colors, but
not with custom colors.
On a technical side note, the colors pre and post the current
frame were already different.
The shader multiplied the custom color by 0.25
for anything pre current frame.
Pull Request: https://projects.blender.org/blender/blender/pulls/119375
The issue described was that the motion path didn't display the last frame
of a scene.
This PR makes the user facing motion path range inclusive on both ends.
E.g. when the user specifies a motion path from 1-24 the will now get all 24
frames, whereas previously the motion path would end at frame 23.
This also makes the `Scene Frame Range` option work properly since that
had the same issue. Now it displays the actual full scene range.
Internally, the `bMotionPath` is still exclusive on the upper bound.
It is just the `bAnimVizSettings` range that has been modified.
Pull Request: https://projects.blender.org/blender/blender/pulls/118611
Animators (especially for film and TV) often need
to track the movement of things in screenspace.
At the end of the day, the pixel motion is what counts.
But motion paths were always in world space,
which made it hard to use when the camera
is also animated (during action scenes e.g.)
This PR introduces the feature of projecting a motion path into the screen space of the active scene camera.
Limitations
This makes the motion path only useful when looking through the active scene camera.
Switching the scene camera using markers is not yet supported.
Technical Implementation
This is achieved by baking the motion path points into the
camera space on creation. For every point calculated,
the camera is evaluated through the depsgraph and
the resulting world matrix is used.
Then I pass in the current frame's world matrix of the
camera into the shader to make sure the points follow it.
As can be seen in the video, it looks quite odd when
viewed at another angle but this is expected.
I mentioned that in the tooltip, so it shouldn't be an issue
Pull Request: https://projects.blender.org/blender/blender/pulls/117593
Simplify `animviz_verify_motionpaths()` as the current code structure
got in the way of me reviewing an addition to it.
Some conditions and calculations are reordered so that they don't have
to be repeated. This allowed me to reduce nesting of the code, and make
it easier to understand when exactly a motion path is reused
cache-and-all, when it's reused but gets a new cache, and when it's
freshly allocated.
I also think this removes a theoretical memory leak, as there was a code
path that would allocate a new cache without freeing the old one. This
would require a somewhat invalid data structure to begin with, but the
code path now simply doesn't exist any more. I don't think this
problematic code path was ever hit in normal use, though.
No actual functional changes.
The previous commit introduced a new `RPT_()` macro to translate
strings which are not tooltips or regular interface elements, but
longer reports or statuses.
This commit uses the new macro to translate many strings all over the
UI.
Most of it is a simple replace from `TIP_()` or `IFACE_()` to
`RPT_()`, but there are some additional changes:
- A few translations inside `BKE_report()` are removed altogether
because they are already handled by the translation system.
- Messages inside `UI_but_disable()` are no longer translated
manually, but they are handled by a new regex in the translation
system.
Pull Request: https://projects.blender.org/blender/blender/pulls/116804
Pull Request: https://projects.blender.org/blender/blender/pulls/116804
Also see #103343.
Couldn't move two files yet:
* `softbody.c`: The corresponding regression test fails. It seems like the
conversion to C++ changes floating point accuracy, but it's not clear where that happens exactly.
* `writeffmpeg.c`: Is a bit more complex to convert because of the static array in `av_err2str`.
Pull Request: https://projects.blender.org/blender/blender/pulls/110182
