Class: BarChart

Mobject to add

Returns

this

this for chaining

Inherited from

Group.add

addUpdater()

addUpdater(updater, callOnAdd): this

Defined in: core/Mobject.ts:589

Parameters

updater

UpdaterFunction

callOnAdd

boolean = false

Returns

this

Inherited from

Group.addUpdater

alignTo()

alignTo(target, direction): this

Defined in: core/Mobject.ts:427

Parameters

target

direction

Returns

this

Inherited from

Group.alignTo

applyFunction()

applyFunction(fn, options?): this

Defined in: core/Mobject.ts:619

Parameters

fn

(point) => number[]

options?

aboutEdge?

aboutPoint?

Returns

this

Inherited from

Group.applyFunction

applyMatrix()

applyMatrix(matrix, options?): this

Defined in: core/Mobject.ts:627

Parameters

matrix

number[][]

options?

aboutEdge?

aboutPoint?

Returns

this

Inherited from

Group.applyMatrix

applyToFamily()

applyToFamily(func): this

Defined in: core/Mobject.ts:577

Parameters

func

(mobject) => void

Returns

this

Inherited from

Group.applyToFamily

become()

become(other): this

Defined in: core/Mobject.ts:376

Parameters

other

Returns

this

Inherited from

Group.become

center()

center(): this

Defined in: core/Mobject.ts:479

Returns

this

Inherited from

Group.center

changeBarValues()

changeBarValues(newValues): VGroup

Defined in: mobjects/graphing/BarChart.ts:495

Change bar values with animation support

This method updates the bar heights to reflect new values. For animations, use this with a Transform animation.

Parameters

newValues

New values for the bars

number[] | number[][]

Returns

VGroup

The bars VGroup with updated heights (useful for animations)

Example

// Direct update
chart.changeBarValues([5, 3, 8, 2]);

// With animation (using scene.play)
const newChart = chart.copy();
newChart.changeBarValues([5, 3, 8, 2]);
scene.play(new Transform(chart, newChart));

clear()

clear(): this

Defined in: core/Group.ts:73

Remove all children from this group.

Returns

this

this for chaining

Inherited from

Group.clear

clearUpdaters()

clearUpdaters(): this

Defined in: core/Mobject.ts:601

Returns

this

Inherited from

Group.clearUpdaters

copy()

copy(): Mobject

Defined in: core/Mobject.ts:358

Returns

Inherited from

Group.copy

dispose()

dispose(): void

Defined in: core/Mobject.ts:658

Returns

void

Inherited from

Group.dispose

filter()

filter(fn): Group

Defined in: core/Group.ts:312

Filter mobjects in the group.

Parameters

fn

(mobject, index) => boolean

Filter predicate

Returns

Group

New Group with filtered mobjects

Inherited from

Group.filter

flip()

flip(axis, options?): this

Defined in: core/Mobject.ts:257

Parameters

axis

Vector3Tuple = ...

options?

aboutEdge?

aboutPoint?

Returns

this

Inherited from

Group.flip

forEach()

forEach(fn): this

Defined in: core/Group.ts:293

Apply a function to each mobject in the group.

Parameters

fn

(mobject, index) => void

Function to apply

Returns

this

this for chaining

Inherited from

Group.forEach

generateTarget()

generateTarget(): Mobject

Defined in: core/Mobject.ts:642

Returns

Inherited from

Group.generateTarget

get()

get(index): Mobject

Defined in: core/Group.ts:277

Get a mobject by index.

Parameters

index

number

Index of the mobject

Returns

The mobject at the given index, or undefined

Inherited from

Group.get

getBar()

getBar(groupIndex, seriesIndex): Rectangle

Defined in: mobjects/graphing/BarChart.ts:557

Get a specific bar by group and series index

Parameters

groupIndex

number

The group/category index

seriesIndex

number = 0

The series index (default 0 for single series)

Returns

Rectangle

The Rectangle bar, or undefined if not found

getBottom()

getBottom(): Vector3Tuple

Defined in: core/Mobject.ts:458

Returns

Inherited from

Group.getBottom

getBoundingBox()

getBoundingBox(): object

Defined in: core/Mobject.ts:445

Returns

object

depth

depth: number

height

height: number

width

width: number

Inherited from

Group.getBoundingBox

getBounds()

getBounds(): object

Defined in: core/Mobject.ts:392

Returns

object

max

max: object

max.x

x: number

max.y

y: number

max.z

z: number

min

min: object

min.x

x: number

min.y

y: number

min.z

z: number

Inherited from

Group.getBounds

getCenter()

getCenter(): Vector3Tuple

Defined in: core/Group.ts:86

Get the center of the group (average of all children centers). Children maintain world-space coordinates, so no group position offset is added (shift/moveTo only update children, not group position).

Returns

Group.getDisplayMeshes

Center position as [x, y, z]

Inherited from

Group.getCenter

getDisplayMeshes()

getDisplayMeshes(): Mesh<BufferGeometry<NormalBufferAttributes, BufferGeometryEventMap>, Material<MaterialEventMap> | Material<MaterialEventMap>[], Object3DEventMap>[]

Defined in: core/Group.ts:253

Returns

Mesh<BufferGeometry<NormalBufferAttributes, BufferGeometryEventMap>, Material<MaterialEventMap> | Material<MaterialEventMap>[], Object3DEventMap>[]

Inherited from

getDisplayMeshLength()

getDisplayMeshLength(): number

Defined in: core/Group.ts:249

Number of visible display meshes this mobject contributes when rendered. Used for Transform eligibility checks without forcing Three.js object creation.

Returns

number

Inherited from

Group.getDisplayMeshLength

getEdge()

getEdge(direction): Vector3Tuple

Defined in: core/Mobject.ts:452

Parameters

direction

Returns

Inherited from

Group.getEdge

getFamily()

getFamily(): Mobject[]

Defined in: core/Mobject.ts:583

Returns

Mobject[]

Inherited from

Group.getFamily

getHeight()

getHeight(): number

Defined in: mobjects/graphing/BarChart.ts:581

Get the height of the chart area

Returns

number

getLeft()

getLeft(): Vector3Tuple

Defined in: core/Mobject.ts:461

Returns

Inherited from

Group.getLeft

getNumGroups()

getNumGroups(): number

Defined in: mobjects/graphing/BarChart.ts:602

Get the number of bar groups

Returns

number

getNumSeries()

getNumSeries(): number

Defined in: mobjects/graphing/BarChart.ts:609

Get the number of series

Returns

number

getRight()

getRight(): Vector3Tuple

Defined in: core/Mobject.ts:464

Returns

Inherited from

Group.getRight

getSeriesBars()

getSeriesBars(seriesIndex): VGroup

Defined in: mobjects/graphing/BarChart.ts:567

Get all bars for a specific series

Parameters

seriesIndex

number

The series index

Returns

VGroup

VGroup containing the bars for that series

getThreeObject()

getThreeObject(): Object3D

Defined in: core/Mobject.ts:555

Returns

Object3D

Inherited from

Group.getThreeObject

getTop()

getTop(): Vector3Tuple

Defined in: core/Mobject.ts:455

Returns

Inherited from

Group.getTop

getUpdaters()

getUpdaters(): UpdaterFunction[]

Defined in: core/Mobject.ts:608

Returns

UpdaterFunction[]

Inherited from

Group.getUpdaters

getValues()

getValues(): number[][]

Defined in: mobjects/graphing/BarChart.ts:461

Get the current values

Returns

number[][]

getValuesFlat()

getValuesFlat(): number[]

Defined in: mobjects/graphing/BarChart.ts:468

Get a flat array of values (for single series charts)

Returns

number[]

getWidth()

getWidth(): number

Defined in: mobjects/graphing/BarChart.ts:588

Get the width of the chart area

Returns

number

getYRange()

getYRange(): [number, number, number]

Defined in: mobjects/graphing/BarChart.ts:595

Get the y-axis range

Returns

[number, number, number]

hasUpdaters()

hasUpdaters(): boolean

Defined in: core/Mobject.ts:605

Returns

boolean

Inherited from

Group.hasUpdaters

map()

map<T>(fn): T[]

Defined in: core/Group.ts:303

Map over all mobjects in the group.

Type Parameters

T

T

Parameters

fn

(mobject, index) => T

Mapping function

Returns

T[]

Array of mapped values

Inherited from

Group.map

moveTo()

moveTo(target, alignedEdge?): this

Defined in: core/Group.ts:127

Move the group center to the given point, or align with another Mobject.

Parameters

target

Target position [x, y, z] or Mobject to align with

alignedEdge?

Optional edge direction to align (e.g., UL aligns upper-left edges)

Returns

this

this for chaining

Inherited from

Group.moveTo

moveToAligned()

moveToAligned(target, alignedEdge?): this

Defined in: core/Mobject.ts:437

Parameters

target

alignedEdge?

Returns

this

Inherited from

Group.moveToAligned

nextTo()

nextTo(target, direction, buff): this

Defined in: core/Mobject.ts:410

Parameters

target

Group.prepareForNonlinearTransform

direction

Vector3Tuple = RIGHT

buff

number = 0.25

Returns

this

Inherited from

Group.nextTo

prepareForNonlinearTransform()

prepareForNonlinearTransform(numPieces): this

Defined in: core/Mobject.ts:635

Parameters

numPieces

number = 50

Returns

this

Inherited from

remove()

remove(mobject): this

Defined in: core/Group.ts:56

Remove a mobject from this group.

Parameters

mobject

Mobject to remove

Returns

this

this for chaining

Inherited from

Group.remove

removeUpdater()

removeUpdater(updater): this

Defined in: core/Mobject.ts:595

Parameters

updater

UpdaterFunction

Returns

this

Inherited from

Group.removeUpdater

replace()

replace(target, stretch): this

Defined in: core/Mobject.ts:381

Parameters

target

Group.rotateAboutOrigin

stretch

boolean = false

Returns

this

Inherited from

Group.replace

restoreState()

restoreState(): boolean

Defined in: core/Mobject.ts:652

Returns

boolean

Inherited from

Group.restoreState

rotate()

rotate(angle, axisOrOptions?): this

Defined in: core/Group.ts:157

Rotate all children around an axis. Only children are rotated to avoid double-counting with Three.js hierarchy.

Parameters

angle

number

Rotation angle in radians

axisOrOptions?

Vector3Tuple | { aboutPoint?: Vector3Tuple; axis?: Vector3Tuple; }

Returns

this

this for chaining

Inherited from

Group.rotate

rotateAboutOrigin()

rotateAboutOrigin(angle, axis): this

Defined in: core/Mobject.ts:253

Parameters

angle

number

axis

Vector3Tuple = ...

Returns

this

Inherited from

saveState()

saveState(): this

Defined in: core/Mobject.ts:647

Returns

this

Inherited from

Group.saveState

scale()

scale(factor): this

Defined in: core/Group.ts:174

Scale all children. Only children are scaled to avoid double-counting with Three.js hierarchy.

Parameters

factor

Scale factor (number for uniform, tuple for non-uniform)

number | Vector3Tuple

Returns

this

this for chaining

Inherited from

Group.scale

setBarColors()

setBarColors(colors): this

Defined in: mobjects/graphing/BarChart.ts:618

Set bar colors

Parameters

colors

New colors (single color or array)

string | string[]

Returns

this

this for chaining

setBarFillOpacity()

setBarFillOpacity(opacity): this

Defined in: mobjects/graphing/BarChart.ts:642

Set bar fill opacity

Parameters

opacity

number

Fill opacity (0-1)

Returns

this

this for chaining

setColor()

setColor(color): this

Defined in: core/Group.ts:187

Set the color of all children.

Parameters

color

string

CSS color string

Returns

this

this for chaining

Inherited from

Group.setColor

setFill()

setFill(color?, opacity?): this

Defined in: core/Mobject.ts:178

Parameters

color?

string

opacity?

number

Returns

this

Inherited from

Group.setFill

setFillOpacity()

setFillOpacity(opacity): this

Defined in: core/Group.ts:226

Set the fill opacity of all children.

Parameters

opacity

number

Fill opacity (0-1)

Returns

this

this for chaining

Inherited from

Group.setFillOpacity

setStrokeOpacity()

setStrokeOpacity(opacity): this

Defined in: core/Group.ts:200

Set the stroke opacity of all children.

Parameters

opacity

number

Opacity value (0-1)

Returns

this

this for chaining

Inherited from

Group.setStrokeOpacity

setStrokeWidth()

setStrokeWidth(width): this

Defined in: core/Group.ts:213

Set the stroke width of all children.

Parameters

width

number

Stroke width in pixels

Returns

this

this for chaining

Inherited from

Group.setStrokeWidth

setStyle()

setStyle(style): this

Defined in: core/Mobject.ts:126

Parameters

style

Partial<MobjectStyle>

Returns

this

Inherited from

Group.setStyle

setX()

setX(x): this

Defined in: core/Mobject.ts:467

Parameters

x

number

Returns

this

Inherited from

Group.setX

setY()

setY(y): this

Defined in: core/Mobject.ts:471

Parameters

y

number

Returns

this

Inherited from

Group.setY

setZ()

setZ(z): this

Defined in: core/Mobject.ts:475

Parameters

z

number

Returns

this

Inherited from

Group.setZ

shift()

shift(delta): this

Defined in: core/Group.ts:113

Shift all children by the given delta. Only children are shifted (they maintain world-space coordinates). The group's own position is NOT updated to avoid double-counting when getCenter() computes the average of children centers.

Parameters

delta

Translation vector [x, y, z]

Returns

this

this for chaining

Inherited from

Group.shift

stretch()

stretch(factor, dim, options?): this

Defined in: core/Mobject.ts:310

Parameters

factor

number

dim

number

options?

aboutEdge?

aboutPoint?

Returns

this

Inherited from

Group.stretch

toCorner()

toCorner(direction, buff, frameDimensions?): this

Defined in: core/Mobject.ts:509

Parameters

direction

Vector3Tuple = ...

buff

number = 0.5

frameDimensions?

[number, number]

Returns

this

Inherited from

Group.toCorner

toEdge()

toEdge(direction, buff, frameDimensions?): this

Defined in: core/Mobject.ts:504

Parameters

direction