gen_along: Generator for tweening along a variable

In tweenr: Interpolate Data for Smooth Animations

Generator for tweening along a variable

Description

This is a generator version of tween_along(). It returns a generator that can be used with get_frame() and get_raw_frames() to extract frames for a specific time point scaled between 0 and 1.

Usage

gen_along(
  .data,
  ease,
  along,
  id = NULL,
  range = NULL,
  history = TRUE,
  keep_last = FALSE
)

Arguments

.data	A data.frame with components at different stages
ease	The easing function to use. Either a single string or one for each column in the data set.
along	The "time" point for each row
id	An unquoted expression giving the component id for each row. Will be evaluated in the context of .data so can refer to a column from that
range	The range of time points to include in the tween. If NULL it will use the range of time
history	Should earlier datapoints be kept in subsequent frames
keep_last	Should the last point of each id be kept beyond its time

Value

An along_generator object

See Also

Other Other generators: gen_at(), gen_components(), gen_events(), gen_keyframe()

Examples

# Default behaviour
gen <- gen_along(airquality, ease = "linear", along = Day, id = Month)
get_frame(gen, 0.22)

# Overwrite keep_last or history in get_frame
get_frame(gen, 0.67, history = FALSE)

tweenr documentation built on Sept. 6, 2022, 9:05 a.m.