KBE3D / KBCore / Cesium / EllipsoidTangentPlane

类: EllipsoidTangentPlane

A plane tangent to the provided ellipsoid at the provided origin. If origin is not on the surface of the ellipsoid, it's surface projection will be used. If origin is at the center of the ellipsoid, an exception will be thrown.

参数

The point on the surface of the ellipsoid where the tangent plane touches.

参数

The ellipsoid to use.

属性

ellipsoid

ellipsoid: Ellipsoid

Gets the ellipsoid.

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origin

origin: Cartesian3

Gets the origin.

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plane

readonly plane: Plane

Gets the plane which is tangent to the ellipsoid.

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xAxis

readonly xAxis: Cartesian3

Gets the local X-axis (east) of the tangent plane.

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yAxis

readonly yAxis: Cartesian3

Gets the local Y-axis (north) of the tangent plane.

---

zAxis

readonly zAxis: Cartesian3

Gets the local Z-axis (up) of the tangent plane.

方法

fromPoints()

static fromPoints(cartesians: Cartesian3[], ellipsoid?: Ellipsoid): EllipsoidTangentPlane

Creates a new instance from the provided ellipsoid and the center point of the provided Cartesians.

参数

cartesians

Cartesian3[]

The list of positions surrounding the center point.

ellipsoid?

Ellipsoid

The ellipsoid to use.

返回

EllipsoidTangentPlane

The new instance of EllipsoidTangentPlane.

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projectPointOntoPlane()

projectPointOntoPlane(cartesian: Cartesian3, result?: Cartesian2): Cartesian2

Computes the projection of the provided 3D position onto the 2D plane, radially outward from the EllipsoidTangentPlane.ellipsoid coordinate system origin.

参数

cartesian

Cartesian3

The point to project.

result?

Cartesian2

The object onto which to store the result.

返回

Cartesian2

The modified result parameter or a new Cartesian2 instance if none was provided. Undefined if there is no intersection point

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projectPointsOntoPlane()

projectPointsOntoPlane(cartesians: Cartesian3[], result?: Cartesian2[]): Cartesian2[]

Computes the projection of the provided 3D positions onto the 2D plane (where possible), radially outward from the global origin. The resulting array may be shorter than the input array - if a single projection is impossible it will not be included.

参数

cartesians

Cartesian3[]

The array of points to project.

result?

Cartesian2[]

The array of Cartesian2 instances onto which to store results.

返回

Cartesian2[]

The modified result parameter or a new array of Cartesian2 instances if none was provided.

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projectPointToNearestOnPlane()

projectPointToNearestOnPlane(cartesian: Cartesian3, result?: Cartesian2): Cartesian2

Computes the projection of the provided 3D position onto the 2D plane, along the plane normal.

参数

cartesian

Cartesian3

The point to project.

result?

Cartesian2

The object onto which to store the result.

返回

Cartesian2

The modified result parameter or a new Cartesian2 instance if none was provided.

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projectPointsToNearestOnPlane()

projectPointsToNearestOnPlane(cartesians: Cartesian3[], result?: Cartesian2[]): Cartesian2[]

Computes the projection of the provided 3D positions onto the 2D plane, along the plane normal.

参数

cartesians

Cartesian3[]

The array of points to project.

result?

Cartesian2[]

The array of Cartesian2 instances onto which to store results.

返回

Cartesian2[]

The modified result parameter or a new array of Cartesian2 instances if none was provided. This will have the same length as cartesians.

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projectPointOntoEllipsoid()

projectPointOntoEllipsoid(cartesian: Cartesian2, result?: Cartesian3): Cartesian3

Computes the projection of the provided 2D position onto the 3D ellipsoid.

参数

cartesian

Cartesian2

The points to project.

result?

Cartesian3

The Cartesian3 instance to store result.

返回

Cartesian3

The modified result parameter or a new Cartesian3 instance if none was provided.

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projectPointsOntoEllipsoid()

projectPointsOntoEllipsoid(cartesians: Cartesian2[], result?: Cartesian3[]): Cartesian3[]

Computes the projection of the provided 2D positions onto the 3D ellipsoid.

参数

cartesians

Cartesian2[]

The array of points to project.

result?

Cartesian3[]

The array of Cartesian3 instances onto which to store results.

返回

Cartesian3[]

The modified result parameter or a new array of Cartesian3 instances if none was provided.

构造函数

构造函数

new EllipsoidTangentPlane(origin: Cartesian3, ellipsoid?: Ellipsoid): EllipsoidTangentPlane

参数

origin

Cartesian3

ellipsoid?

Ellipsoid

返回

EllipsoidTangentPlane