Implements the Butterworth Filter
(https://en.wikipedia.org/wiki/Butterworth_filter) for smoothing FCurves.
This filter is ideal for smoothing dense data, like motion capture recordings.
It has the advantage of keeping the shape of the curve
intact while reducing minimal fluctuations.
The disadvantage is the impulse response has a twang,
meaning extreme spikes cause fluctuations to either side.
The implementation is based on the GPL code found here:
https://exstrom.com/journal/sigproc/dsigproc.html
In order to avoid phase shifting, the filter is run forward and backward,
effectively doubling the filter order.
The Redo panel offers the following options
* Frequency Cutoff: 0-n value, where 0 means it cuts everything
so the curve will become straight, the max value is the Nyquist frequency
and depends on the frame rate and the "Samples per Frame" option
* Filter Order: Higher values mean the frequency cutoff is steeper
* Samples per Frame: Before the filter is applied, the curve is resampled
at this interval to avoid errors when there are uneven spaces between frames.
If the keys are on subframes, e.g. a 60fps file in a 30fps scene, increase this value to 2
* Blend: 0-1 value to blend between the original curve and the filter result
* Blend In/Out: The number of frames at the start and end for which
to blend between the filtered and unfiltered curve.
This can help reduce any resulting jumps in the animation at the selection border
The operator can be called from the Key menu. (Key->Smooth->Butterworth Smooth)
Pull Request: https://projects.blender.org/blender/blender/pulls/106952
Since the change in #106113 the Slider menu which was called with the D hotkey was no longer in any menu.
This made it really hard to discover.
Since there is now more than 1 menu popup, it needs more than 1 hotkey.
The idea is that the ALT key is used in combination with keys that are easy to reach with the left hand.
Right now it is ALT+S and ALT+D but if needed in the future it can be extended to f, w and e
Pull Request: https://projects.blender.org/blender/blender/pulls/107866
Rather than forcing the user to initiate a transform operation to edit the `Proportional Size`, allow editing of the `Proportional Size` through the UI.
The affected headers are:
- View 3D
- Dop Sheet
- Image Editor
- Graph Editor
- Mask Editor
Pull Request: https://projects.blender.org/blender/blender/pulls/107507
* remove "Keyframe" label from the Key menu
* "Jump To Keyframe" -> "Jump to Selected"
* added a new menu "Density" with Decimate, Sample and Clean operators
* removed the "Clean Channels" entry. It does the same as the "Clean" operator but also removes channels IF the remaining keys are at the default value. The feature is still available in the redo panel
* Split the slider operators out by functionality
* Move Euler filter to Channel menu
* Remove "Add F-Curve modifier" from Key menu (it already is in the Channel menu)
* Move Bake/Unbake Curve functions to Channel menu
* Move "Bake Sound to FCurves" to Channel menu
Pull Request: https://projects.blender.org/blender/blender/pulls/106113
Introduce a context manager that temporarily overrides a UILayout's
operator context.
Instead of writing this:
```py
default_op_context = layout.context
layout.context = 'OTHER_VALUE'
layout.do_stuff()
layout.context = default_op_context
```
you can now write this:
```py
from bl_ui_utils.layout import operator_context
with operator_context(layout, 'OTHER_VALUE'):
layout.do_stuff()
```
This is also exception-safe; it will always ensure the layout's operator
context is restored when the `with` body is exited, regardless of
whether that's done with an exception or regularly.
Idea in-the-hallway approved by @Sergey.
Add a Gaussian smoothing operator to supersede the current
smoothing operator in the graph editor.
Advantage over the current implementation:
* Supports modal operations
* Is independent of key density
* More options in the redo panel
* More predictable Impulse Response
Option in the redo panel to change
Filter Width: How far out on each side of a key the code checks
to average key values
Sigma: The shape of the bell curve, lower values make a sharper bell curve
reducing the smoothing effect.
Too High values will make the code behave like an average filter as the
curve in the -1/1 range will almost be flat.
On a technical note, the operator needs to store additional data when running in modal
to avoid allocating/deallocating data on every modal run.
For that reason the `tGraphSliderOp` struct has been extended with
`void *operator_data` and `void (*free_operator_data)(void *operator_data)`.
The former is the data and the latter is a function responsible for freeing that data.
Pull Request: https://projects.blender.org/blender/blender/pulls/105635
In most places where it appears in a menu, the operator would already
apply to all selected F-Curves. Now it is done consistently and explicitly
from all menu items. The default of the operator is now also set to 'all
selected', so that it also behaves like that when called from the operator
search menu.
Move two settings that were previously in the "View" menu of the Graph Editor into User Preferences.
It has been mentioned in the meeting by Luciano Muñoz Sessarego that it would be good to move that to the preferences so you can set it once and then forget about it.
The Settings moved are:
Only Selected Curve Keyframes
Use High Quality Display
Pull Request: https://projects.blender.org/blender/blender/pulls/104532
Before that patch, the slider operators for the Graph Editor are not easily accessible since they don't have a hotkey.
This adds the "d" hotkey for the already existing slider operator menu.
Using the popup menu means that your last used operator will always be under the cursor, so it's quick to access.
Pull Request #104530
This commit implements described in the #104573.
The goal is to fix the confusion of the submodule hashes change, which are not
ideal for any of the supported git-module configuration (they are either always
visible causing confusion, or silently staged and committed, also causing
confusion).
This commit replaces submodules with a checkout of addons and addons_contrib,
covered by the .gitignore, and locale and developer tools are moved to the
main repository.
This also changes the paths:
- /release/scripts are moved to the /scripts
- /source/tools are moved to the /tools
- /release/datafiles/locale is moved to /locale
This is done to avoid conflicts when using bisect, and also allow buildbot to
automatically "recover" wgen building older or newer branches/patches.
Running `make update` will initialize the local checkout to the changed
repository configuration.
Another aspect of the change is that the make update will support Github style
of remote organization (origin remote pointing to thy fork, upstream remote
pointing to the upstream blender/blender.git).
Pull Request #104755
