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Cyclic extrapolation is implemented as an f-curve modifier, so this
technically violates abstraction separation and is something of a hack.
However without such behavior achieving smooth looping with cyclic
extrapolation is extremely cumbersome.
The new behavior is applied when the first modifier is Cyclic
extrapolation in Repeat or Repeat with Offset mode without
using influence, repeat count or range restrictions.
This change in behavior means that curve handles have to be updated
when the modifier is added, removed or its options change. Due to the
way code is structured, it seems it requires a helper link to the
containing curve from the modifier object.
Reviewers: aligorith
Differential Revision: https://developer.blender.org/D2783
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Noisy change, but safe, and better do it sooner than later if we are to
rework copying code. Also, previous commit shows this *is* useful to
catch some mistakes.
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Drivers can use this to refer to the data which the driver is applied to,
useful for objects, bones, to avoid having to create a variable pointing to its self.
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FCurve evaluation depended on FCurve.curval, which isn't threadsafe.
Now only use this value for debug display,
and pass the value instead of storing in the FCurve for all but debug-display.
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copying all variables from one driver to another
This was a feature request from a few years back (IIRC from ZanQdo?) to make it
easier to reuse one set of driver variables across several different drivers.
Dev Notes:
* Finally it's done! All that trouble for two little buttons.
* Grr... cmake... grrr!
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Support for driver variables that don't resolve to numbers, eg:
objects, bones, curves... etc.
Without this, Python expressions to access this data needed to use an absolute path from `bpy.data`,
however this is inconvenient, breaks easily (based on naming) and wouldn't set the dependencies correctly.
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F-Curves easier
Now, when trying to insert a keyframe on a driven property (using IKEY, or with
autokeying enabled), the keyframes will get created on the Driver's F-Curve
(instead of creating a new FCurve that goes into the active action, but will never
do anything). Furthermore, the x-value of the new keyframe will be the current
result of the driver expression.
Why/Motivations:
This way, it becomes easier to create corrective drivers, as you can position all
the targets the driver depends on, then adjust the driver value until it does what
you need, and then you keyframe that value to bake it into the Driver F-Curve
(in effect, "training" the computer how to behave in that case).
Usage Notes:
* In practice, that particular workflow is still quite clunky to achieve, due to some
quirks of how the driver system and the UI widgets interact. Specifically, you'll
need to disable/mute the driver before trying to edit the setting (to prevent the
driver from immediately resetting the value - before even autokey fires!). However,
if you're using the Graph Editor to preview/monitor/manage the keying process, you'll
then want to re-enable the driver before changing the targets, so that you can see
how much of a change you'll want to be applying!
* The warning about editing driver values may need to be disabled or selectively
knocked out. I had it disabled while testing this functionality, but it's actually
harmless in its current state (if just a bit annoying).
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When attempting to change a driver variable name to an "invalid" name,
an indicator will now be shown beside the offending variable name.
Clicking on this icon will show a popup which provides more information
about why the variable name cannot be used.
Reasons that it knows about are:
1) Starts with number
2) Has a dot
3) Has a space
4) Starts with or contains a special character
5) Starts with an underscore (Python does allow this, but it's bad practice,
and makes checking security of drivers harder)
6) Is a reserved Python keyword
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NLA Strips
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.
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This is only a (hacky) partial fix, actually, since `RNA_property_animated()` will still
not work in those cases... Better that than nothing, though.
Thanks to Campbell for review.
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Since this is now pretty much the de-facto "minimum distance between keyframes",
we might as well expose this in this header so that other places which need similar
thresholds can perform similar checks (needed for my next commit)
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Summary:
Crash was happening because of fcurve modifier stack
used modifier's DNA to store temporary data.
Now made it so storage for such a thing is being
allocated locally per object update so multiple objects
which shares the same animation wouldn't run into
threading conflict anymore.
This storage might be a part of EvaluationContext,
but that'd mean passing this context all over in
object_where_is which will clutter API for now without
actual benefit for this.
Optimization notes: storage is only being allocated
if there're Cycles modifier in the stack, so there're
no extra allocations happening in all other cases.
To make code a bit less cluttered with this storage
passing all over the place added extra callbacks to
the FModifier storage which runs evaluation with the
given storage.
Reviewers: brecht, campbellbarton, aligorith
CC: plasmasolutions
Differential Revision: https://developer.blender.org/D147
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simulation has been disabled
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selected but not the mid-point.
only one of the handles would be changed to the HD_FREE.
effected curves and fcurves.
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- when an fcurve had no selected keyframes, a default fallback value was used which caused view-selected to include frame 1, even when no selected frames were there.
- the vertical axis was always reset, ideally we would center vertically too but the way this operator currently works we only know about the frame range,
now don't change the vertical scroll when viewing selected since it would always jump to the top of the screen (view-all still acts this way).
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values passed as pointers.
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from Peter Staples (batfinger)
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than one curve is displayed
The range calculation used to use a fixed 0-1 range whenever it couldn't find
any values for a particular F-Curve. However, this was then taken by the
aggregation calculation to be used as just another value, leading to problems if
only vertices of a very high-value curve are selected to be included.
Modified the range calculation to ensure that suitable vertices were found
before trying to take the range values returned.
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F-Curves
It is possible to get the old behaviour (handles excluded) by bringing up the
Operator Properties (F6) while in the Graph Editor (this doesn't work elsewhere
due to the context requirements of this stuff).
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without the underscores these clogged up the namespace for autocompleation which was annoying.
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http://markmail.org/message/fp7ozcywxum3ar7n
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hidden, resulting in bad curves.
hide handles wasn't properly respected by transform function testhandles_fcurve().
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Implemented basic audio animation.
* AnimatableProperty: Propper cache writing and spline interpolation for reading (the solution for stair steps in audio animation)
* Animatable properties so far are: volume, pitch, panning
* Users note: Changing the pitch of a sound results in wrong seeking, due to the resulting playback length difference.
* Users note: Panning only works for mono sources, values are in the range [-2..2], this basically controls the angle of the sound, 0 is front, -1 left, 1 right and 2 and -2 are back. Typical stereo panning only supports [-1..1].
* Disabled animation of audio related ffmpeg output parameters.
* Scene Audio Panel: 3D Listener settings also for Renderer, new Volume property (animatable!), Update/Bake buttons for animation problems, moved sampling rate and channel count here
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Not really a "bug", but it was on my todo anyways. Based on patch
[#26508] by Campbell, with a few modifications including extending
this to the Action/DopeSheet editor too.
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'const char's,.
Only one functional change where Transform orientations passed "" to BIF_createTransformOrientation() which could then have the value written into.
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* Keyframing operators now use the reports system for displaying all its error messages.
- The benefit of this is that users no longer need to check the console for error messages if keyframing fails.
- Unfortunately, reports are not currently viewable in any space/view in Blender, so...
* Added a temporary operator (UI_OT_reports_to_textblock), which can be accessed in the UI from the button which appears in place of the icon when more than one report exists. This dumps the current list of reports to a textblock "Recent Reports", from which they can be viewed.
This isn't really nice, but at least we now have a way to view these again, which makes debugging some things a pain.
* Bugfix #24606 - when trying to add keyframes to F-Curves with F-Modifiers already which alter the curve significantly enough that the keyframes will have no effect, there are now warnings which aim to alleviate any confusion.
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own files.
No functional changes.
Where necessary extern "C" {} blocks have been added.
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- some remove() functions took an int argument rather then the item to remove.
- disallow None argument.
- raise an error if the item isnt in the collection.
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- remove FreeCamera struct (wasnt used)
- remove world color alpha values (not used anywhre).
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eg:
bpy.context.object.driver_remove("location")
ANIM_remove_driver now accepts -1 as an index for removing all drivers from one path.
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* Copy/Paste operators for F-Modifiers
Available in Graph and NLA Editors. Use the Copy/Paste buttons beside the 'Add Modifier' buttons.
Copy copies all the modifiers of the ACTIVE F-Curve or Strip depending on the editor.
Paste pastes modifiers from the buffer to all the selected F-Curves or Strips, adding the new modifiers to the ends of each list.
* 'Stepped Interpolation' F-Modifier
This modifier holds each interpolated value from the F-Curve for several frames without changing the timing.
This allows to preview motions 'on-twos' for example without altering the timing, or having to go through setting heaps of keyframes. In this case, Andy wanted to use this for CG <-> StopMo.
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changed some malloc to MEM_mallocN while trying to track down a memory leak.
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Now the compositing node tree will update on frame change if any of the
nodes are animated.
This doesn't work for playback (i.e. alt a), that's better off waiting until we
have some kind of frame caching system.
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Highlights:
* Support for Multi-Target Variables
This was the main reason for this recode. Previously, variables could only be used to give some RNA property used as an input source to the driver a name. However, this meant that effects such as Rotational Difference couldn't be used in conjunction with other effects and/or settings to achieve the powerful results. Now, a variable can take several input targets, perform some interesting operations on them, and spit out a representative value based on that.
* New Variable Types
With the introduction of multi-target variables, there are now 3 types of variable that can be used: single property (i.e. the only type previously), Rotational Difference (angle between two bones), and Distance (distance between two objects or bones).
* New Driver Types
In addition to the existing 'Average', 'Sum', and 'Expression' types, there is now the additional options of 'Minimum' and 'Maximum'. These take the smallest/largest value that one of the variables evaluates to.
* Fix for Driver F-Curve colouring bug
Newly added drivers did not get automatically coloured in the Graph Editor properly. Was caused by inappropriate notifiers being used.
Notes:
* This commit breaks existing 2.5 files with drivers (in other words, they are lost forever).
* Rigify has been corrected to work with the new system. The PyAPI for accessing targets used for the variables could still be made nicer (using subclassing to directly access?), but that is left for later.
* Version patching for 2.49 files still needs to be put back in place.
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* Added function for F-Curves to find the F-Curves in a given list which affect some named data, such as bones, nodes, or sequence strips.
* Added a BezTriple offsetting callback to be used with the F-Curve+Keyframe loopers in use for many of the keyframe editing tools.
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