tkintertools.animation.controllers¶

Standard control functions

Definition of control function:

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def f(t: float) -> float: ...

• t: 0% ~ 100%, indicates the percentage of time
• return value: Any real number, represents a multiple of the cardinality of the animation

The built-in control functions are:

• flat: speed remains the same
• smooth: speed is slow first, then fast and then slow
• rebound: before the end, displacement will bounce off a bit

🔵_map_t¶

function protected

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def _map_t(
    start: float,
    end: float,
) -> typing.Callable[[float], float]: ...

Map parameters in any range between 0 and 1

• start: the first value of the parameter of control function
• end: the last value of the parameter of control function

🔵_map_y¶

function protected

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def _map_y(
    base_function: typing.Callable[[float], float],
    end: float,
) -> typing.Callable[[float], float]: ...

Map the final return value to 1

• base_function: base function
• end: the last value of the parameter of control function

🔵controller_generator¶

function public

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def controller_generator(
    base_function: typing.Callable[[float], float],
    start: float,
    end: float,
    *,
    map_y: bool = True,
) -> typing.Callable[[float], float]: ...

Generator of control functions

Modify the generic function to a control function suitable for animation

• base_function: base function
• start: the first value of the parameter of control function
• end: the last value of the parameter of control function
• map_y: whether map the final return value to 1

For example:

• Before modifying: \(y = 2\sint, 0 <= t <= \pi/2\)
• After modifying: \(y = \sin\frac{\pi}{2}t, 0 <= t <= 1\)

🔵flat¶

function public

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def flat(
    t: float,
) -> float: ...

🔵rebound¶

function public

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def rebound(
    t: float,
) -> float: ...

🔵smooth¶

function public

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def smooth(
    t: float,
) -> float: ...