Latex
class Latex extends SVG
A node for animating equations with LaTeX.
import ...
export default makeScene2D(function* (view) {
const tex = createRef<Latex>();
view.add(<Latex ref={tex} tex="{{y=}}{{a}}{{x^2}}" fill="white" />);
yield* waitFor(0.2);
yield* tex().tex('{{y=}}{{a}}{{x^2}} + {{bx}}', 1);
yield* waitFor(0.2);
yield* tex().tex(
'{{y=}}{{\\left(}}{{a}}{{x^2}} + {{bx}}{{\\over 1}}{{\\right)}}',
1,
);
yield* waitFor(0.2);
yield* tex().tex('{{y=}}{{a}}{{x^2}}', 1);
});
Constructors
constructor
public override new Latexprops: LatexProps: Latex
Parameters
OverwritesSVG.constructor
Properties
absolutePosition
readonly public absolutePosition: SimpleVector2SignalLatex
A helper signal for operating on the position in world space.
Retrieving the position using this signal returns the position in world space. Similarly, setting the position using this signal transforms the new value to local space.
If the new value is a function, the position of this node will be continuously updated to always match the position returned by the function. This can be useful to "pin" the node in a specific place or to make it follow another node's position.
Unlike position
, this signal is not compound - it doesn't contain
separate signals for the x
and y
components.
SVG.absolutePosition
absoluteRotation
readonly public absoluteRotation: SimpleSignalnumberLatex
A helper signal for operating on the rotation in world space.
Retrieving the rotation using this signal returns the rotation in world space. Similarly, setting the rotation using this signal transforms the new value to local space.
If the new value is a function, the rotation of this node will be continuously updated to always match the rotation returned by the function.
Inherited fromSVG.absoluteRotation
absoluteScale
readonly public absoluteScale: SimpleVector2SignalLatex
A helper signal for operating on the scale in world space.
Retrieving the scale using this signal returns the scale in world space. Similarly, setting the scale using this signal transforms the new value to local space.
If the new value is a function, the scale of this node will be continuously updated to always match the position returned by the function.
Unlike scale
, this signal is not compound - it doesn't contain
separate signals for the x
and y
components.
SVG.absoluteScale
alignContent
readonly public alignContent: SimpleSignalFlexContentLatex
SVG.alignContent
alignItems
readonly public alignItems: SimpleSignalFlexItemsLatex
SVG.alignItems
alignSelf
readonly public alignSelf: SimpleSignalFlexItemsLatex
SVG.alignSelf
antialiased
readonly public antialiased: SimpleSignalbooleanLatex
SVG.antialiased
basis
readonly public basis: SimpleSignalFlexBasisLatex
SVG.basis
bottom
readonly public bottom: SimpleVector2SignalLatex
The position of the bottom edge of this node.
When set, this shortcut property will modify the node's position so that the bottom edge ends up in the given place.
When retrieved, it will return the position of the bottom edge in the parent space.
Inherited fromSVG.bottom
bottomLeft
readonly public bottomLeft: SimpleVector2SignalLatex
The position of the bottom left corner of this node.
When set, this shortcut property will modify the node's position so that the bottom left corner ends up in the given place.
When retrieved, it will return the position of the bottom left corner in the parent space.
Inherited fromSVG.bottomLeft
bottomRight
readonly public bottomRight: SimpleVector2SignalLatex
The position of the bottom right corner of this node.
When set, this shortcut property will modify the node's position so that the bottom right corner ends up in the given place.
When retrieved, it will return the position of the bottom right corner in the parent space.
Inherited fromSVG.bottomRight
cache
readonly public cache: SimpleSignalbooleanLatex
SVG.cache
cachePadding
readonly public cachePadding: SpacingSignalLatex
Controls the padding of the cached canvas used by this node.
By default, the size of the cache is determined based on the bounding box
of the node and its children. That includes effects such as stroke or
shadow. This property can be used to expand the cache area further.
Usually used to account for custom effects created by shaders
.
SVG.cachePadding
children
readonly public children: SignalComponentChildrenNode[]LatexSignalContextComponentChildrenNode[]Latex
SVG.children
clip
readonly public clip: SimpleSignalbooleanLatex
SVG.clip
composite
readonly public composite: SimpleSignalbooleanLatex
SVG.composite
compositeOperation
readonly public compositeOperation: SimpleSignalGlobalCompositeOperationLatex
SVG.compositeOperation
creationStack
readonly public creationStack?: string
SVG.creationStack
direction
readonly public direction: SimpleSignalFlexDirectionLatex
SVG.direction
element
public element: HTMLElement
SVG.element
fill
readonly public fill: CanvasStyleSignalLatex
SVG.fill
filters
readonly public filters: FiltersSignalLatex
SVG.filters
fontFamily
readonly public fontFamily: SimpleSignalstringLatex
SVG.fontFamily
fontSize
readonly public fontSize: SimpleSignalnumberLatex
SVG.fontSize
fontStyle
readonly public fontStyle: SimpleSignalstringLatex
SVG.fontStyle
fontWeight
readonly public fontWeight: SimpleSignalnumberLatex
SVG.fontWeight
gap
readonly public gap: Vector2LengthSignalLatex
SVG.gap
grow
readonly public grow: SimpleSignalnumberLatex
SVG.grow
isClass
public isClass: boolean
SVG.isClass
justifyContent
readonly public justifyContent: SimpleSignalFlexContentLatex
SVG.justifyContent
key
readonly public key: string
SVG.key
layout
readonly public layout: SimpleSignalLayoutModeLatex
SVG.layout
left
readonly public left: SimpleVector2SignalLatex
The position of the left edge of this node.
When set, this shortcut property will modify the node's position so that the left edge ends up in the given place.
When retrieved, it will return the position of the left edge in the parent space.
Inherited fromSVG.left
letterSpacing
readonly public letterSpacing: SimpleSignalnumberLatex
SVG.letterSpacing
lineCap
readonly public lineCap: SimpleSignalCanvasLineCapLatex
SVG.lineCap
lineDash
readonly public lineDash: SimpleSignalnumber[]Latex
SVG.lineDash
lineDashOffset
readonly public lineDashOffset: SimpleSignalnumberLatex
SVG.lineDashOffset
lineHeight
readonly public lineHeight: SimpleSignalLengthLatex
SVG.lineHeight
lineJoin
readonly public lineJoin: SimpleSignalCanvasLineJoinLatex
SVG.lineJoin
lineWidth
readonly public lineWidth: SimpleSignalnumberLatex
SVG.lineWidth
margin
readonly public margin: SpacingSignalLatex
SVG.margin
maxHeight
readonly public maxHeight: SimpleSignalLengthLimitLatex
SVG.maxHeight
maxWidth
readonly public maxWidth: SimpleSignalLengthLimitLatex
SVG.maxWidth
middle
readonly public middle: SimpleVector2SignalLatex
The position of the center of this node.
When set, this shortcut property will modify the node's position so that the center ends up in the given place.
If the offset
has not been changed, this will be the same as the
position
.
When retrieved, it will return the position of the center in the parent space.
Inherited fromSVG.middle
minHeight
readonly public minHeight: SimpleSignalLengthLimitLatex
SVG.minHeight
minWidth
readonly public minWidth: SimpleSignalLengthLimitLatex
SVG.minWidth
offset
readonly public offset: Vector2SignalLatexVector2SignalContextLatex
Represents the offset of this node's origin.
By default, the origin of a node is located at its center. The origin serves as the pivot point when rotating and scaling a node, but it doesn't affect the placement of its children.
The value is relative to the size of this node. A value of 1
means as far
to the right/bottom as possible. Here are a few examples of offsets:
[-1, -1]
- top left corner[1, -1]
- top right corner[0, 1]
- bottom edge[-1, 1]
- bottom left corner
SVG.offset
opacity
readonly public opacity: SimpleSignalnumberLatex
Represents the opacity of this node in the range 0-1.
The value is clamped to the range 0-1.
Inherited fromSVG.opacity
options
readonly public options: SimpleSignalOptionListLatex
padding
readonly public padding: SpacingSignalLatex
SVG.padding
parent
readonly public parent: SimpleSignalnullNodevoid = ...
SVG.parent
position
readonly public position: Vector2SignalLatexVector2SignalContextLatex
Represents the position of this node in local space of its parent.
Examples
Inherited fromSVG.position
properties
readonly public properties: RecordstringPropertyMetadataany = ...
SVG.properties
ratio
readonly public ratio: SimpleSignalnullnumberLatex
SVG.ratio
right
readonly public right: SimpleVector2SignalLatex
The position of the right edge of this node.
When set, this shortcut property will modify the node's position so that the right edge ends up in the given place.
When retrieved, it will return the position of the right edge in the parent space.
Inherited fromSVG.right
rotation
readonly public rotation: SimpleSignalnumberLatex
Represents the rotation (in degrees) of this node relative to its parent.
Inherited fromSVG.rotation
scale
readonly public scale: Vector2SignalLatexVector2SignalContextLatex
Represents the scale of this node in local space of its parent.
Examples
Inherited fromSVG.scale
shaders
readonly public shaders: SignalPossibleShaderConfigShaderConfig[]LatexSignalContextPossibleShaderConfigShaderConfig[]Latex
SVG.shaders
shadowBlur
readonly public shadowBlur: SimpleSignalnumberLatex
SVG.shadowBlur
shadowColor
readonly public shadowColor: ColorSignalLatex
SVG.shadowColor
shadowOffset
readonly public shadowOffset: Vector2SignalLatexVector2SignalContextLatex
SVG.shadowOffset
shrink
readonly public shrink: SimpleSignalnumberLatex
SVG.shrink
size
readonly public size: Vector2LengthSignalLatex
Represents the size of this node.
A size is a two-dimensional vector, where x
represents the width
, and y
represents the height
.
The value of both x and y is of type Length
which is
either:
number
- the desired length in pixels${number}%
- a string with the desired length in percents, for example'50%'
null
- an automatic length
When retrieving the size, all units are converted to pixels, using the
current state of the layout. For example, retrieving the width set to
'50%'
, while the parent has a width of 200px
will result in the number
100
being returned.
When the node is not part of the layout, setting its size using percents refers to the size of the entire scene.
Examples
Inherited fromSVG.size
skew
readonly public skew: Vector2SignalLatexVector2SignalContextLatex
Represents the skew of this node in local space of its parent.
Examples
Inherited fromSVG.skew
stroke
readonly public stroke: CanvasStyleSignalLatex
SVG.stroke
strokeFirst
readonly public strokeFirst: SimpleSignalbooleanLatex
SVG.strokeFirst
styles
public styles: CSSStyleDeclaration
SVG.styles
svg
readonly public svg: SimpleSignalstringLatex
SVG string to be rendered
Inherited fromSVG.svg
tex
readonly public tex: Signalstringstring[]string[]LatexSignalContextstringstring[]string[]Latex
textAlign
readonly public textAlign: SimpleSignalCanvasTextAlignLatex
SVG.textAlign
textDirection
readonly public textDirection: SimpleSignalCanvasDirectionLatex
SVG.textDirection
textWrap
readonly public textWrap: SimpleSignalTextWrapLatex
SVG.textWrap
top
readonly public top: SimpleVector2SignalLatex
The position of the top edge of this node.
When set, this shortcut property will modify the node's position so that the top edge ends up in the given place.
When retrieved, it will return the position of the top edge in the parent space.
Inherited fromSVG.top
topLeft
readonly public topLeft: SimpleVector2SignalLatex
The position of the top left corner of this node.
When set, this shortcut property will modify the node's position so that the top left corner ends up in the given place.
When retrieved, it will return the position of the top left corner in the parent space.
Inherited fromSVG.topLeft
topRight
readonly public topRight: SimpleVector2SignalLatex
The position of the top right corner of this node.
When set, this shortcut property will modify the node's position so that the top right corner ends up in the given place.
When retrieved, it will return the position of the top right corner in the parent space.
Inherited fromSVG.topRight
wrap
readonly public wrap: SimpleSignalFlexWrapLatex
SVG.wrap
wrapper
Child to wrap all SVG node
Inherited fromSVG.wrapper
zIndex
readonly public zIndex: SimpleSignalnumberLatex
SVG.zIndex
Accessors
columnGap
public get columnGap(): SignalLengthnumberthisSignalContextLengthnumberthis
SVG.columnGap
height
public get height(): SignalLengthnumberthisSignalContextLengthnumberthis
SVG.height
rowGap
public get rowGap(): SignalLengthnumberthisSignalContextLengthnumberthis
SVG.rowGap
width
public get width(): SignalLengthnumberthisSignalContextLengthnumberthis
SVG.width
x
public get x(): SimpleSignalnumberthis
SVG.x
y
public get y(): SimpleSignalnumberthis
SVG.y
Methods
[iterator]
public [iterator](): Generatorkey: stringmeta: PropertyMetadataanysignal: SimpleSignalanyvoidvoidunknown
SVG.[iterator]
absoluteOpacity
public absoluteOpacity(): number
SVG.absoluteOpacity
add
public addnode: ComponentChildren: Latex
Add the given node(s) as the children of this node.
The nodes will be appended at the end of the children list.
Examples
Parameters
node: ComponentChildren
A node or an array of nodes to append.
SVG.add
anchorPosition
public anchorPosition(): Vector2
SVG.anchorPosition
applyState
public applyStatestate: NodeStateduration: numbertiming?: TimingFunction: ThreadGenerator
Apply the given state to the node, setting all matching signal values to the provided values.
Parameters
Inherited fromSVG.applyState
cacheBBox
public cacheBBox(): BBox
Get a bounding box for the contents rendered by this node as well as its children.
Inherited fromSVG.cacheBBox
cardinalPoint
public cardinalPointorigin: OriginDirection: SimpleVector2SignalLatex
Get the cardinal point corresponding to the given origin.
Parameters
Inherited fromSVG.cardinalPoint
childAs
Get the nth children cast to the specified type.
Type Parameters
Parameters
index: number
The index of the child to retrieve.
SVG.childAs
childrenAs
Get the children array cast to the specified type.
Type Parameters
Inherited fromSVG.childrenAs
clone
public clonecustomProps: NodeState = {}: Latex
Create a copy of this node.
Parameters
customProps: NodeState = {}
Properties to override.
SVG.clone
compositeToLocal
public compositeToLocal(): DOMMatrix
SVG.compositeToLocal
compositeToWorld
public compositeToWorld(): DOMMatrix
A matrix mapping composite space to world space.
Certain effects such as blur and shadows ignore the current transformation. This matrix can be used to transform their parameters so that the effect appears relative to the closest composite root.
Inherited fromSVG.compositeToWorld
computedPosition
public computedPosition(): Vector2
SVG.computedPosition
dispose
public dispose(): void
Prepare this node to be disposed of.
This method is called automatically when a scene is refreshed. It will be called even if the node is not currently attached to the tree.
The goal of this method is to clean any external references to allow the node to be garbage collected.
Inherited fromSVG.dispose
drawOverlay
public drawOverlaycontext: CanvasRenderingContext2Dmatrix: DOMMatrix: void
Draw an overlay for this node.
The overlay for the currently inspected node is displayed on top of the canvas.
The provided context is in screen space. The local-to-screen matrix can be used to transform all shapes that need to be displayed. This approach allows to keep the line widths and gizmo sizes consistent, no matter how zoomed-in the view is.
Parameters
context: CanvasRenderingContext2D
The context to draw with.
matrix: DOMMatrix
A local-to-screen matrix.
SVG.drawOverlay
findAll
Find all descendants of this node that match the given predicate.
Type Parameters
Parameters
Inherited fromSVG.findAll
findAncestor
Find the closest ancestor of this node that matches the given predicate.
Type Parameters
Parameters
Inherited fromSVG.findAncestor
findFirst
Find the first descendant of this node that matches the given predicate.
Type Parameters
Parameters
Inherited fromSVG.findFirst
findLast
Find the last descendant of this node that matches the given predicate.
Type Parameters
Parameters
Inherited fromSVG.findLast
getChildrenById
Get all SVG nodes with the given id.
Parameters
id: string
An id to query.
SVG.getChildrenById
getOriginDelta
Parameters
Inherited fromSVG.getOriginDelta
getState
public getState(): NodeState
Return a snapshot of the node's current signal values.
This method will calculate the values of any reactive properties of the node at the time the method is called.
Inherited fromSVG.getState
hit
Try to find a node intersecting the given position.
Parameters
Inherited fromSVG.hit
insert
public insertnode: ComponentChildrenindex: number = 0: Latex
Insert the given node(s) at the specified index in the children list.
Examples
Parameters
node: ComponentChildren
A node or an array of nodes to insert.
index: number = 0
An index at which to insert the node(s).
SVG.insert
instantiate
Create an instance of this node's class.
Parameters
Inherited fromSVG.instantiate
isLayoutRoot
public isLayoutRoot(): boolean
SVG.isLayoutRoot
layoutEnabled
public layoutEnabled(): boolean
Get the resolved layout mode of this node.
When the mode is null
, its value will be inherited from the parent.
Use layout
to get the raw mode set for this node (without
inheritance).
SVG.layoutEnabled
localToParent
public localToParent(): DOMMatrix
Get the local-to-parent matrix for this node.
This matrix transforms vectors from local space of this node to local space of this node's parent.
Inherited fromSVG.localToParent
localToWorld
public localToWorld(): DOMMatrix
Get the local-to-world matrix for this node.
This matrix transforms vectors from local space of this node to world space.
Examples
Inherited fromSVG.localToWorld
lockSize
public lockSize(): void
SVG.lockSize
move
Rearrange this node in relation to its siblings.
Children are rendered starting from the beginning of the children list. We can change the rendering order by rearranging said list.
A positive by
arguments move the node up (it will be rendered on top of
the elements it has passed). Negative values move it down.
Parameters
by: number = 1
Number of places by which the node should be moved.
SVG.move
moveAbove
public moveAbovenode: NodedirectlyAbove: boolean = false: Latex
Move the node above the provided node in the parent's layout.
The node will be moved above the provided node and from then on will be rendered on top of it. By default, if the node is already positioned higher than the sibling node, it will not get moved.
Parameters
node: Node
The sibling node below which to move.
directlyAbove: boolean = false
Whether the node should be positioned directly above the sibling. When true, will move the node even if it is already positioned above the sibling.
SVG.moveAbove
moveBelow
public moveBelownode: NodedirectlyBelow: boolean = false: Latex
Move the node below the provided node in the parent's layout.
The node will be moved below the provided node and from then on will be rendered below it. By default, if the node is already positioned lower than the sibling node, it will not get moved.
Parameters
node: Node
The sibling node below which to move.
directlyBelow: boolean = false
Whether the node should be positioned directly below the sibling. When true, will move the node even if it is already positioned below the sibling.
SVG.moveBelow
moveDown
public moveDown(): Latex
Move the node down in relation to its siblings.
The node will exchange places with the sibling right below it (if any) and from then on will be rendered under it.
Inherited fromSVG.moveDown
moveOffset
Update the offset of this node and adjust the position to keep it in the same place.
Parameters
Inherited fromSVG.moveOffset
moveTo
Move the node to the provided position relative to its siblings.
If the node is getting moved to a lower position, it will be placed below the sibling that's currently at the provided index (if any). If the node is getting moved to a higher position, it will be placed above the sibling that's currently at the provided index (if any).
Parameters
index: number
The index to move the node to.
SVG.moveTo
moveToBottom
public moveToBottom(): Latex
Move the node to the bottom in relation to its siblings.
The node will be placed at the beginning of the children list and from then on will be rendered below all of its siblings.
Inherited fromSVG.moveToBottom
moveToTop
public moveToTop(): Latex
Move the node to the top in relation to its siblings.
The node will be placed at the end of the children list and from then on will be rendered on top of all of its siblings.
Inherited fromSVG.moveToTop
moveUp
public moveUp(): Latex
Move the node up in relation to its siblings.
The node will exchange places with the sibling right above it (if any) and from then on will be rendered on top of it.
Inherited fromSVG.moveUp
parentAs
Get the parent cast to the specified type.
Type Parameters
Inherited fromSVG.parentAs
parentToWorld
public parentToWorld(): DOMMatrix
Get the parent-to-world matrix for this node.
This matrix transforms vectors from local space of this node's parent to world space.
Inherited fromSVG.parentToWorld
peekChildren
public peekChildren(): readonly Node[]
Get the current children of this node.
Unlike children
, this method does not have any side effects.
It does not register the children
signal as a dependency, and it does not
spawn any children. It can be used to safely retrieve the current state of
the scene graph for debugging purposes.
SVG.peekChildren
reactiveClone
public reactiveClonecustomProps: NodeState = {}: Latex
Create a reactive copy of this node.
A reactive copy has all its properties dynamically updated to match the source node.
Parameters
customProps: NodeState = {}
Properties to override.
SVG.reactiveClone
releaseSize
public releaseSize(): void
SVG.releaseSize
remove
public remove(): Latex
Remove this node from the tree.
Inherited fromSVG.remove
removeChildren
public removeChildren(): Latex
Remove all children of this node.
Inherited fromSVG.removeChildren
render
public rendercontext: CanvasRenderingContext2D: void
Render this node onto the given canvas.
Parameters
context: CanvasRenderingContext2D
The context to draw with.
SVG.render
reparent
Change the parent of this node while keeping the absolute transform.
After performing this operation, the node will stay in the same place visually, but its parent will be changed.
Parameters
Inherited fromSVG.reparent
restore
public restore(): void
public restoreduration: numbertiming?: TimingFunction: ThreadGenerator
Restore the node to its last saved state.
This method can be used together with the save
method to restore a
node to a previously saved state. Restoring a node to a previous state
removes that state from the state stack.
Examples
Inherited fromSVG.restore
ripple
public rippleduration: number = 1: GeneratorvoidThreadGeneratorPromiseanyPromisableanyvoidany
Parameters
duration: number = 1
SVG.ripple
save
public save(): void
Push a snapshot of the node's current state onto the node's state stack.
This method can be used together with the restore
method to save a
node's current state and later restore it. It is possible to store more
than one state by calling save
method multiple times.
SVG.save
snapshotClone
public snapshotClonecustomProps: NodeState = {}: Latex
Create a copy of this node.
Unlike clone
, a snapshot clone calculates any reactive properties
at the moment of cloning and passes the raw values to the copy.
Parameters
customProps: NodeState = {}
Properties to override.
SVG.snapshotClone
toPromise
Wait for any asynchronous resources that this node or its children have.
Certain resources like images are always loaded asynchronously. Awaiting this method makes sure that all such resources are done loading before continuing the animation.
Inherited fromSVG.toPromise
view
public view(): View2D
SVG.view
worldToLocal
public worldToLocal(): DOMMatrix
Get the world-to-local matrix for this node.
This matrix transforms vectors from world space to local space of this node.
Examples
Inherited fromSVG.worldToLocal
worldToParent
public worldToParent(): DOMMatrix
Get the world-to-parent matrix for this node.
This matrix transforms vectors from world space to local space of this node's parent.
Inherited fromSVG.worldToParent