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
Enabled by default and also enabled for older filesm so
there should be no regressions.
In some cases it's useful to not use subdivided uvs for multires.
*Removed curve init code in readfile (no more needed since the split broke anyway compatibility with earlier WeightVGroup files…).
*Updated get_ob2ob_distance() code (much simpler – I’m not a matrices’ god!).
*Enhanced a few RNA names (Campbell has others in mind here, though, I think).
Main: Complete rewrite of the sequencer related audio code to support 3D Audio objects later and especially adressing the animation system problems (see mailing list if interested).
Note: Animation is not working yet, so with this commit volume animation doesn't work anymore, that's the next step.
Minor things:
* Changed AUD_Reference behaviour a little to be more usage safe.
* Fixed bug in AUD_I3DHandle: Missing virtual destructor
* Fixed enmus in AUD_Space.h
* Fixed a warning in rna_scene.c
* Removed an unneeded call in rna_sound.c
- Default size of Graph Editor handle vertices is now 4 (up from 3).
This "small" change seems to be enough to make a substantial
difference when it comes to actually differentiating between these
- "Only Selected" DopeSheet filter is enabled for new Graph Editor
instances by default. It helps hone in on the F-Curves of the data
most animators hope to just be refining the motion for (i.e. the
selected stuff)
- "Only Selected Keyframe Handles" is now enabled, to reduce clutter
from handles of nearby keys getting in the way.
Bezier curves are now drawn smoother (i.e. less segmented), especially
for curve segments where there is a very large vertical displacement
over a short period of time (i.e. 120 degrees rotation over 1 frame)
and/or often when zoomed in a bit too.
- Made the resolution calculation take the vertical distance into
account too, instead of just the horizontal distance.
- Segment multiplier changed from 3 to 5, as this seems to give better
zoomed-in performance.
- added menu templates
- move template menu into the header of the text editor (so users will find more easily)
- updated mathutils examples, switching the order of multiplication.
