ChangeSpeed R6 Class

Wraps another animation and applies a custom speed profile. The speed function maps normalised input time 0,1 to normalised output time 0,1, allowing slow-motion, fast-forward, or custom time curves.

Super class

manimR::Animation -> ChangeSpeed

Public fields

inner_animation

The wrapped animation

speed_func

Function mapping t -> t' (both in 0,1)

affects_speed_updaters

Whether speed changes affect updaters

Methods

Public methods

• ChangeSpeed$new()

• ChangeSpeed$begin()

• ChangeSpeed$finish()

• ChangeSpeed$interpolate()

• ChangeSpeed$interpolate_mobject()

• ChangeSpeed$clone()

Inherited methods

• manimR::Animation$copy()
• manimR::Animation$get_all_mobjects()
• manimR::Animation$is_introducer()
• manimR::Animation$is_remover()
• manimR::Animation$print()
• manimR::Animation$to_anim_spec()

---

Method new()

Create a ChangeSpeed wrapper

Usage

ChangeSpeed$new(
  animation,
  speed_func = NULL,
  run_time = NULL,
  affects_speed_updaters = TRUE
)

Arguments

animation

The animation to wrap

speed_func

Function(t) -> t' mapping time, where both input and output are in 0, 1

run_time

Override total run time

affects_speed_updaters

Whether updaters are affected

---

Method begin()

Delegate begin to inner animation

Usage

ChangeSpeed$begin()

---

Method finish()

Delegate finish to inner animation

Usage

ChangeSpeed$finish()

---

Method interpolate()

Apply speed remapping and delegate

Usage

ChangeSpeed$interpolate(alpha)

Arguments

alpha

Raw progress in 0, 1

---

Method interpolate_mobject()

No-op (delegation handled in interpolate)

Usage

ChangeSpeed$interpolate_mobject(alpha)

Arguments

alpha

Unused

---

Method clone()

The objects of this class are cloneable with this method.

Usage

ChangeSpeed$clone(deep = FALSE)

Arguments

deep

Whether to make a deep clone.