Class: MercatorProjection

Defined in: src/sdk/geo/GeoProjection.ts:437

A Mercator projection.

Extends

• AbstractGeoProjection

Constructors

Constructor

new MercatorProjection(): MercatorProjection

Returns

MercatorProjection

Inherited from

AbstractGeoProjection.constructor

Properties

center

protected readonly center: GeoPoint

Defined in: src/sdk/geo/GeoProjection.ts:155

Inherited from

AbstractGeoProjection.center

---

centerTranslation

protected readonly centerTranslation: Float64Array

Defined in: src/sdk/geo/GeoProjection.ts:156

Inherited from

AbstractGeoProjection.centerTranslation

---

postRotation

protected postRotation: number = 0

Defined in: src/sdk/geo/GeoProjection.ts:160

Inherited from

AbstractGeoProjection.postRotation

---

preRotation

protected readonly preRotation: Float64Array

Defined in: src/sdk/geo/GeoProjection.ts:158

Inherited from

AbstractGeoProjection.preRotation

---

preRotationForwardTransform

protected readonly preRotationForwardTransform: Transform3D

Defined in: src/sdk/geo/GeoProjection.ts:165

Inherited from

AbstractGeoProjection.preRotationForwardTransform

---

preRotationReverseTransform

protected readonly preRotationReverseTransform: Transform3D

Defined in: src/sdk/geo/GeoProjection.ts:166

Inherited from

AbstractGeoProjection.preRotationReverseTransform

---

reflectY

protected reflectY: number = 1

Defined in: src/sdk/geo/GeoProjection.ts:163

Inherited from

AbstractGeoProjection.reflectY

---

rotationCos

protected rotationCos: number = 1

Defined in: src/sdk/geo/GeoProjection.ts:162

Inherited from

AbstractGeoProjection.rotationCos

---

rotationSin

protected rotationSin: number = 0

Defined in: src/sdk/geo/GeoProjection.ts:161

Inherited from

AbstractGeoProjection.rotationSin

---

scaleFactor

protected scaleFactor: number

Defined in: src/sdk/geo/GeoProjection.ts:157

Inherited from

AbstractGeoProjection.scaleFactor

---

translation

protected readonly translation: Float64Array

Defined in: src/sdk/geo/GeoProjection.ts:159

Inherited from

AbstractGeoProjection.translation

Methods

copyParametersFrom()

copyParametersFrom(other): this

Defined in: src/sdk/geo/GeoProjection.ts:242

Parameters

Parameter	Type
other	GeoProjection

Returns

this

Inherit Doc

Inherited from

AbstractGeoProjection.copyParametersFrom

---

getCenter()

getCenter(): GeoPointReadOnly

Defined in: src/sdk/geo/GeoProjection.ts:171

Returns

GeoPointReadOnly

Inherit Doc

Inherited from

AbstractGeoProjection.getCenter

---

getPostRotation()

getPostRotation(): number

Defined in: src/sdk/geo/GeoProjection.ts:191

Returns

number

Inherit Doc

Inherited from

AbstractGeoProjection.getPostRotation

---

getPreRotation()

getPreRotation(): ReadonlyFloat64Array

Defined in: src/sdk/geo/GeoProjection.ts:181

Returns

ReadonlyFloat64Array

Inherit Doc

Inherited from

AbstractGeoProjection.getPreRotation

---

getReflectY()

getReflectY(): boolean

Defined in: src/sdk/geo/GeoProjection.ts:196

Returns

boolean

Inherit Doc

Inherited from

AbstractGeoProjection.getReflectY

---

getScaleFactor()

getScaleFactor(): number

Defined in: src/sdk/geo/GeoProjection.ts:176

Returns

number

Inherit Doc

Inherited from

AbstractGeoProjection.getScaleFactor

---

getTranslation()

getTranslation(): ReadonlyFloat64Array

Defined in: src/sdk/geo/GeoProjection.ts:186

Returns

ReadonlyFloat64Array

Inherit Doc

Inherited from

AbstractGeoProjection.getTranslation

---

invert()

invert<T>(vec, out): T

Defined in: src/sdk/geo/GeoProjection.ts:397

Type Parameters

Type Parameter
T extends Float64Array | GeoPoint

Parameters

Parameter	Type
vec	ReadonlyFloat64Array
out	T

Returns

T

Inherit Doc

Inherited from

AbstractGeoProjection.invert

---

invertRaw()

protected invertRaw(vec, out): Float64Array

Defined in: src/sdk/geo/GeoProjection.ts:456

Inverts a raw projection.

Parameters

Parameter	Type	Description
vec	ReadonlyFloat64Array	a 2D vector describing the projected point to invert.
out	Float64Array	a 2D vector to which to write the result.

Returns

Float64Array

the inverted point.

Overrides

AbstractGeoProjection.invertRaw

---

preRotateForward()

protected preRotateForward(vec, out): Float64Array

Defined in: src/sdk/geo/GeoProjection.ts:299

Applies a forward rotation to a set of lat/lon coordinates using this projection's pre-projection rotation angles.

Parameters

Parameter	Type	Description
vec	ReadonlyFloat64Array	the lat/lon coordinates to rotate, as a vector ([long, lat]).
out	Float64Array	the vector to which to write the result.

Returns

Float64Array

the rotated lat/lon coordinates.

Inherited from

AbstractGeoProjection.preRotateForward

---

preRotateReverse()

protected preRotateReverse(vec, out): Float64Array

Defined in: src/sdk/geo/GeoProjection.ts:331

Applies a reverse rotation to a set of lat/lon coordinates using this projection's pre-projection rotation angles.

Parameters

Parameter	Type	Description
vec	ReadonlyFloat64Array	the lat/lon coordinates to rotate, as a vector ([long, lat]).
out	Float64Array	the vector to which to write the result.

Returns

Float64Array

the rotated lat/lon coordinates.

Inherited from

AbstractGeoProjection.preRotateReverse

---

project()

project(point, out): Float64Array

Defined in: src/sdk/geo/GeoProjection.ts:361

Parameters

Parameter	Type
point	Readonly<Omit<Float64Array, "set" | "sort" | "copyWithin">> | LatLonInterface
out	Float64Array

Returns

Float64Array

Inherit Doc

Inherited from

AbstractGeoProjection.project

---

projectRaw()

protected projectRaw(vec, out): Float64Array

Defined in: src/sdk/geo/GeoProjection.ts:444

Applies a raw projection.

Parameters

Parameter	Type	Description
vec	ReadonlyFloat64Array	a [lon, lat] vector describing the geographic point to project.
out	Float64Array	a 2D vector to which to write the result.

Returns

Float64Array

the projected point.

Overrides

AbstractGeoProjection.projectRaw

---

setCenter()

setCenter(point): this

Defined in: src/sdk/geo/GeoProjection.ts:201

Parameters

Parameter	Type
point	LatLonInterface

Returns

this

Inherit Doc

Inherited from

AbstractGeoProjection.setCenter

---

setPostRotation()

setPostRotation(rotation): this

Defined in: src/sdk/geo/GeoProjection.ts:228

Parameters

Parameter	Type
rotation	number

Returns

this

Inherit Doc

Inherited from

AbstractGeoProjection.setPostRotation

---

setPreRotation()

setPreRotation(vec): this

Defined in: src/sdk/geo/GeoProjection.ts:214

Parameters

Parameter	Type
vec	ReadonlyFloat64Array

Returns

this

Inherit Doc

Inherited from

AbstractGeoProjection.setPreRotation

---

setReflectY()

setReflectY(val): this

Defined in: src/sdk/geo/GeoProjection.ts:236

Parameters

Parameter	Type
val	boolean

Returns

this

Inherit Doc

Inherited from

AbstractGeoProjection.setReflectY

---

setScaleFactor()

setScaleFactor(factor): this

Defined in: src/sdk/geo/GeoProjection.ts:208

Parameters

Parameter	Type
factor	number

Returns

this

Inherit Doc

Inherited from

AbstractGeoProjection.setScaleFactor

---

setTranslation()

setTranslation(vec): this

Defined in: src/sdk/geo/GeoProjection.ts:222

Parameters

Parameter	Type
vec	ReadonlyFloat64Array

Returns

this

Inherit Doc

Inherited from

AbstractGeoProjection.setTranslation

---

updateCenterTranslation()

protected updateCenterTranslation(): void

Defined in: src/sdk/geo/GeoProjection.ts:269

Updates the translation vector to move the center of this projection to the origin.

Returns

void

Inherited from

AbstractGeoProjection.updateCenterTranslation

---

updatePreRotationTransforms()

protected updatePreRotationTransforms(): void

Defined in: src/sdk/geo/GeoProjection.ts:254

Updates the pre-rotation transformation matrices.

Returns

void

Inherited from

AbstractGeoProjection.updatePreRotationTransforms