Positioning

General

Point

class Point()

interface, exported from edge

A single point.

Point.x

type: number

Point.y

type: number

RotationVector

class RotationVector()

interface, exported from rotation-vector

RotationVector.dx

type: number

RotationVector.dy

type: number

RotationData

class RotationData()

interface, exported from rotation-vector

Interface holding rotation information of a graph object.

RotationData.absoluteRotation

type: number

Absolute rotation angle in degree.

Absolute rotation overwrites any relative rotation.

RotationData.relativeRotation

type: number

Relative rotation angle in degree.

Related Functions

calculateLength(vector)

Calculate the absolute length of the given vector.

Arguments

• vector (rotation-vector.RotationVector) – vector to calculate length of

Returns

number –

normalizeVector(vector)

Normalize an existing vector to length 1.

Arguments

• vector (rotation-vector.RotationVector) – vector to normalize

Returns

rotation-vector.RotationVector –

calculateAngle(vector)

Calculate the Angle of a rotation vector in degree.

Arguments

• vector (rotation-vector.RotationVector) – vector to normalize

Returns

number –

angleToVector(angle, length)

Calculate a rotation vector from an angle in degree and a length.

Arguments

• angle (number) – in degree

• length (number) – length of the vector (defaults to 1)

Returns

rotation-vector.RotationVector –

Edge-Related Positioning

PathPositionRotationAndScale

class PathPositionRotationAndScale()

interface, exported from edge

Extends:

• rotation-vector.RotationData()

Interface describing the position of a marker, text component or link handle placed along an edge path.

PathPositionRotationAndScale.ignorePathDirectionForRotation

type: boolean

If true the relative rotation is applied as if the path always goes from left to right.

PathPositionRotationAndScale.positionOnLine

type: number|”start”|”end”

The relative position of the marker on the edge (between 0 and 1). (Default `0`==’start’)

PathPositionRotationAndScale.scale

type: number

A factor to scale the marker.

PathPositionRotationAndScale.scaleRelative

type: boolean

If true the scaling factor is applied relative to the stroke width.

LineAttachementInfo

class LineAttachementInfo(lineAttachementPoint)

exported from marker

Helper class to calculate where the edge attaches to an end marker.

Create a new line attachement info object.

The attachement point can either be an offset from 0,0 or a point relative to 0,0 of the template. To specify an offset use a single number or a string containing exactly one number. To specify a point use a string with two numbers seperated by a space or a point object. The line attachement point must not include any transformations applied to the marker when it is rendered.

If only an offset was specified the attachement info is not directional.

Arguments

• lineAttachementPoint (string|number|edge.Point) – the attachement point relative to 0,0 in the template

LineAttachementInfo.getRotationVector(angle, scale)

Return a rotation vector pointing at the translated line attachement point.

Arguments

• angle (number) – the angle the marker is currently rotated

• scale (number) – the current scale of the marker

Returns

rotation-vector.RotationVector –

Related Functions

normalizePositionOnLine(positionOnLine)

Normalize the positionOnLine argument to a number. (Default: 0)

Arguments

• positionOnLine (number|"start"|"end") –

Returns

number –