Class: RemoveTextLetterByLetter

Defined in: animation/creation/Create.ts:1103

Removes text letter by letter (reverse typewriter effect). Works with Text mobjects that support partial text display.

Extends AddTextLetterByLetter with reverse: true — all logic is shared, this class exists only for backward-compatible exports.

Extends

• AddTextLetterByLetter

Constructors

Constructor

new RemoveTextLetterByLetter(mobject, options): RemoveTextLetterByLetter

Defined in: animation/creation/Create.ts:1104

Parameters

mobject

Mobject

options

AddTextLetterByLetterOptions = {}

Returns

RemoveTextLetterByLetter

Overrides

AddTextLetterByLetter.constructor

Properties

_fullText

protected _fullText: string = ''

Defined in: animation/creation/Create.ts:1019

Inherited from

AddTextLetterByLetter._fullText

---

_hasBegun

protected _hasBegun: boolean = false

Defined in: animation/Animation.ts:38

Track if begin() has been called

Inherited from

AddTextLetterByLetter._hasBegun

---

_isFinished

protected _isFinished: boolean = false

Defined in: animation/Animation.ts:35

Whether the animation has finished

Inherited from

AddTextLetterByLetter._isFinished

---

_startTime

protected _startTime: number = null

Defined in: animation/Animation.ts:32

Time when the animation started (set by Timeline)

Inherited from

AddTextLetterByLetter._startTime

---

duration

readonly duration: number

Defined in: animation/Animation.ts:26

Duration of the animation in seconds

Inherited from

AddTextLetterByLetter.duration

---

mobject

readonly mobject: Mobject

Defined in: animation/Animation.ts:23

The mobject being animated

Inherited from

AddTextLetterByLetter.mobject

---

rateFunc

readonly rateFunc: RateFunction

Defined in: animation/Animation.ts:29

Rate function controlling the animation's pacing

Inherited from

AddTextLetterByLetter.rateFunc

---

remover

remover: boolean = false

Defined in: animation/Animation.ts:44

If true, the scene will remove this mobject after the animation finishes. Used by FadeOut (like Python manim's remover=True).

Inherited from

AddTextLetterByLetter.remover

---

reverse

protected readonly reverse: boolean

Defined in: animation/creation/Create.ts:1018

Whether to run in reverse (remove letters)

Inherited from

AddTextLetterByLetter.reverse

---

timePerChar

protected readonly timePerChar: number

Defined in: animation/creation/Create.ts:1016

Time per character for duration calculation

Inherited from

AddTextLetterByLetter.timePerChar

Accessors

startTime

Get Signature

get startTime(): number

Defined in: animation/Animation.ts:184

Get the start time of this animation (set by Timeline)

Returns

number

Set Signature

set startTime(time): void

Defined in: animation/Animation.ts:191

Set the start time of this animation (used by Timeline)

Parameters

time

number

Returns

void

Inherited from

AddTextLetterByLetter.startTime

Methods

begin()

begin(): void

Defined in: animation/creation/Create.ts:1030

Called when the animation starts. Subclasses can override to set up initial state. On the very first call, captures a snapshot of the mobject so that reset() can restore it for clean backward seeking.

Returns

void

Inherited from

AddTextLetterByLetter.begin

---

finish()

finish(): void

Defined in: animation/creation/Create.ts:1068

Called when the animation ends. Subclasses can override to clean up or finalize state.

Returns

void

Inherited from

AddTextLetterByLetter.finish

---

interpolate()

interpolate(alpha): void

Defined in: animation/creation/Create.ts:1047

Apply the animation at a given progress value.

Parameters

alpha

number

Progress from 0 (start) to 1 (end)

Returns

void

Inherited from

AddTextLetterByLetter.interpolate

---

isFinished()

isFinished(): boolean

Defined in: animation/Animation.ts:145

Check if the animation has finished

Returns

boolean

Inherited from

AddTextLetterByLetter.isFinished

---

reset()

reset(): void

Defined in: animation/Animation.ts:154

Reset the animation to its initial state. Restores the mobject to its pre-animation visual state so that re-seeking (especially backward) produces correct results.

Returns

void

Inherited from

AddTextLetterByLetter.reset

---

update()

update(_dt, currentTime): void

Defined in: animation/Animation.ts:122

Update the animation for the current frame.

Parameters

_dt

number

Time delta since last frame (unused, but available for subclasses)

currentTime

number

Current time in the timeline

Returns

void

Inherited from

AddTextLetterByLetter.update