KBE3D / KBCore / Cesium / TilingScheme

类: TilingScheme

A tiling scheme for geometry or imagery on the surface of an ellipsoid. At level-of-detail zero, the coarsest, least-detailed level, the number of tiles is configurable. At level of detail one, each of the level zero tiles has four children, two in each direction. At level of detail two, each of the level one tiles has four children, two in each direction. This continues for as many levels as are present in the geometry or imagery source.

属性

ellipsoid

ellipsoid: Ellipsoid

Gets the ellipsoid that is tiled by the tiling scheme.

---

rectangle

rectangle: Rectangle

Gets the rectangle, in radians, covered by this tiling scheme.

---

projection

projection: MapProjection

Gets the map projection used by the tiling scheme.

方法

getNumberOfXTilesAtLevel()

getNumberOfXTilesAtLevel(level: number): number

Gets the total number of tiles in the X direction at a specified level-of-detail.

参数

level

number

The level-of-detail.

返回

number

The number of tiles in the X direction at the given level.

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getNumberOfYTilesAtLevel()

getNumberOfYTilesAtLevel(level: number): number

Gets the total number of tiles in the Y direction at a specified level-of-detail.

参数

level

number

The level-of-detail.

返回

number

The number of tiles in the Y direction at the given level.

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rectangleToNativeRectangle()

rectangleToNativeRectangle(rectangle: Rectangle, result?: Rectangle): Rectangle

Transforms a rectangle specified in geodetic radians to the native coordinate system of this tiling scheme.

参数

rectangle

Rectangle

The rectangle to transform.

result?

Rectangle

The instance to which to copy the result, or undefined if a new instance should be created.

返回

Rectangle

The specified 'result', or a new object containing the native rectangle if 'result' is undefined.

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tileXYToNativeRectangle()

tileXYToNativeRectangle(x: number, y: number, level: number, result?: any): Rectangle

Converts tile x, y coordinates and level to a rectangle expressed in the native coordinates of the tiling scheme.

参数

x

number

The integer x coordinate of the tile.

y

number

The integer y coordinate of the tile.

level

number

The tile level-of-detail. Zero is the least detailed.

result?

any

The instance to which to copy the result, or undefined if a new instance should be created.

返回

Rectangle

The specified 'result', or a new object containing the rectangle if 'result' is undefined.

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tileXYToRectangle()

tileXYToRectangle(x: number, y: number, level: number, result?: any): Rectangle

Converts tile x, y coordinates and level to a cartographic rectangle in radians.

参数

x

number

The integer x coordinate of the tile.

y

number

The integer y coordinate of the tile.

level

number

The tile level-of-detail. Zero is the least detailed.

result?

any

The instance to which to copy the result, or undefined if a new instance should be created.

返回

Rectangle

The specified 'result', or a new object containing the rectangle if 'result' is undefined.

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positionToTileXY()

positionToTileXY(position: Cartographic, level: number, result?: Cartesian2): Cartesian2

Calculates the tile x, y coordinates of the tile containing a given cartographic position.

参数

position

Cartographic

The position.

level

number

The tile level-of-detail. Zero is the least detailed.

result?

Cartesian2

The instance to which to copy the result, or undefined if a new instance should be created.

返回

Cartesian2

The specified 'result', or a new object containing the tile x, y coordinates if 'result' is undefined.

构造函数

构造函数

new TilingScheme(): TilingScheme

返回

TilingScheme