Support applying a flipped pose, useful when animating symmetrical rigs.
This is similar transforming a pose with symmetry enabled, it need not be used as part of transforming.
- Optionally use the 3D cursor as an origin:
to flip root poses that aren't located near the objects origin
which would otherwise flip them along the objects local X axis.
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**Motivation**
This patch adds functionality to flip an entire pose on the X axis using a symmetrical rig.
Currently the only way to do this is to copy the pose, then use paste-flipped, while this can work, it doesn't give much control and isn't as convenient to integrate into other tools.
tested with spring.blend {F9899281}
**Alternative Solutions**
An alternative approach could be to flip input values directly, see: D10781.
**Limitations**
This only flips transform channels, it's possible custom properties are used to control values which are not flipped.
**Open Topics**
- Other pose channel settings could be handled (curved bone roll, ease ... etc).