AnchorMotion
The motion of an anchor that moves with an animated deformation (fea-result-experience §FRX-5): its place at rest, in world coordinates, its world motion at the deform presenter's scale without the phase, and the animation that gives the phase.
In the namespace construct::rendering. Declared in src/libs/libconstruct/construct/rendering/AnchorMotion.hpp.
Detailed description
A viewport places the anchor with the clock of the frame it shows, so the label stays on the vertex it marks. The GUI's clock leads the presented frame by one to three ticks.