Textures attached to particle systems are now get their animation data listed
under the particle systems they are attached to now. This is the most convenient
and direct way that these can get included
Basically, get the grid increments and reuse them when snapping. System
is slightly crappy here, we should calculate those factors only once,
but leaving as todo for later.
In the process, I've removed the old operator (ANIM_OT_channels_visibility_set)
and folded that option in with the hide operator, to make this consistent
with how this is done in the 3D view and other parts of Blender.
Now the hotkeys here work in line with what's done for other parts of Blender
* H = Hide selected
* Shift-H = Hide unselected (i.e. old VKEY behaviour)
* Alt-H = Reveal all
Revised the tools for managing which FCurves are visible in the Graph Editor
curves area. Now, there are the following tools in place:
* V (channels region only) = Hide all curves except those in selected channels [OLD]
* H = Hide all selected curves [NEW]
* Shift-H = Show all previously hidden curves [NEW]
I've removed the old operator to toggle visibility status of selected curves,
as it doesn't seem that useful anymore.
Along with some minor cleanup and simplifications.
Reviewers: campbellbarton
Subscribers: sergey
Differential Revision: https://developer.blender.org/D903
Based on investigation by sergey (Sergey Sharybin) and revzin (Grigory Revzin).
Based on patch D460 by revzin (Grigory Revzin).
Differential Revision: https://developer.blender.org/D460
Thing is, those functions always reallocate the whole keyblock's data mem,
while in some cases we already have right amount of elements, so we can just
copy over. Further more, `BKE_key_convert_from_offset`, despite its name,
was not making any check nor allocation on keyblock's data elements!
So split 'copy' operation itself in `BKE_key_update_from_...`,
where no mem checks/operations are performed (only an assert).
Only useful in sculpt mode currently, but will be used by fix for T35170 too.
For FCurves where all the keyframes use the "simple" interpolation types
(i.e. Constant, Linear, and Bezier), we now use the old FCurve drawing
code that was used prior to the Easing Equations changes. This should
be generally faster in general.
When the "High Quality Line Drawing" option (View menu) is disabled,
the sampling rate (i.e. the size of timesteps to use when sampling
the FCurve for drawing it in most cases now) is set to be quite low
(i.e. at 0.1 frame increments). This amounts to at most 10 sub-steps.
In one test file (with a wide window), this had the effect of improving
the performance by over 3x. It's still not as good as a sampling-free
approach, but for this functionality is still needed for FModifiers,
so it's better that we can optimise this.
When the active action is a NLA strip, the keyframe indicator colors for buttons
and the 3D view indicator (i.e. the current frame indicator changes color) didn't
work correctly. This was because they were still checking for keyframes in
"global" time space, whereas they needed to be applying NLA corrections to
"look inside" the remapped action.
In fact, any button controlling a whole array of values were broken
because they always only keyed the index of the single fcurve returned
by `ui_but_get_fcurve()`, now pass button's rna_index value instead.
