Class MapTileSystemHelper

Inheritance

System.Object

MapTileSystemHelper

Inherited Members

System.Object.ToString()

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

Namespace: Telerik.WinControls.UI

Assembly: Telerik.WinControls.RadMap.dll

Syntax

public static class MapTileSystemHelper

Fields

EarthRadius

Declaration

public const double EarthRadius = 6378137

Field Value

System.Double

MaxLatitude

Declaration

public const double MaxLatitude = 85.05112878

Field Value

System.Double

MaxLongitude

Declaration

public const double MaxLongitude = 180

Field Value

System.Double

MinLatitude

Declaration

public const double MinLatitude = -85.05112878

Field Value

System.Double

MinLongitude

Declaration

public const double MinLongitude = -180

Field Value

System.Double

Methods

GroundResolution(Double, Int32)

Determines the ground resolution (in meters per pixel) at a specified latitude and level of detail.

Declaration

public static double GroundResolution(double latitude, int levelOfDetail)

Parameters

System.Double latitude Latitude (in degrees) at which to measure the ground resolution.

System.Int32 levelOfDetail Level of detail, from 1 (lowest detail) to 23 (highest detail).

Returns

System.Double The ground resolution, in meters per pixel.

LatLongToPixelXY(Double, Double, Int32)

Converts a point from latitude/longitude WGS-84 coordinates (in degrees) into pixel XY coordinates at a specified level of detail.

Declaration

public static PointL LatLongToPixelXY(double latitude, double longitude, int levelOfDetail)

Parameters

System.Double latitude Latitude of the point, in degrees.

System.Double longitude Longitude of the point, in degrees.

System.Int32 levelOfDetail Level of detail, from 1 (lowest detail) to 23 (highest detail).

Returns

PointL

LatLongToPixelXY(Double, Double, Int32, Boolean)

Converts a point from latitude/longitude WGS-84 coordinates (in degrees) into pixel XY coordinates at a specified level of detail.

Declaration

public static PointL LatLongToPixelXY(double latitude, double longitude, int levelOfDetail, bool allowWraparound)

Parameters

System.Double latitude Latitude of the point, in degrees.

System.Double longitude Longitude of the point, in degrees.

System.Int32 levelOfDetail Level of detail, from 1 (lowest detail) to 23 (highest detail).

System.Boolean allowWraparound if set to true wraparound is allowed.

Returns

PointL

LatLongToPixelXY(PointG, Int32)

Converts a point from latitude/longitude WGS-84 coordinates (in degrees) into pixel XY coordinates at a specified level of detail.

Declaration

public static PointL LatLongToPixelXY(PointG location, int levelOfDetail)

Parameters

PointG location Location of the point, in degrees.

System.Int32 levelOfDetail Level of detail, from 1 (lowest detail) to 23 (highest detail).

Returns

PointL

MapScale(Double, Int32, Int32)

Determines the map scale at a specified latitude, level of detail, and screen resolution.

Declaration

public static double MapScale(double latitude, int levelOfDetail, int screenDpi)

Parameters

System.Double latitude Latitude (in degrees) at which to measure the map scale.

System.Int32 levelOfDetail Level of detail, from 1 (lowest detail) to 23 (highest detail).

System.Int32 screenDpi Resolution of the screen, in dots per inch.

Returns

System.Double The map scale, expressed as the denominator N of the ratio 1 : N.

MapSize(Int32)

Determines the map width and height (in pixels) at a specified level of detail.

Declaration

public static long MapSize(int levelOfDetail)

Parameters

System.Int32 levelOfDetail Level of detail, from 1 (lowest detail) to 23 (highest detail).

Returns

System.Int64 The map width and height in pixels.

PixelXYToLatLong(Int64, Int64, Int32)

Converts a pixel from pixel XY coordinates at a specified level of detail into latitude/longitude WGS-84 coordinates (in degrees).

Declaration

public static PointG PixelXYToLatLong(long pixelX, long pixelY, int levelOfDetail)

Parameters

System.Int64 pixelX X coordinate of the point, in pixels.

System.Int64 pixelY Y coordinates of the point, in pixels.

System.Int32 levelOfDetail Level of detail, from 1 (lowest detail) to 23 (highest detail).

Returns

PointG

PixelXYToLatLong(Int64, Int64, Int32, Boolean)

Converts a pixel from pixel XY coordinates at a specified level of detail into latitude/longitude WGS-84 coordinates (in degrees).

Declaration

public static PointG PixelXYToLatLong(long pixelX, long pixelY, int levelOfDetail, bool allowWraparound)

Parameters

System.Int64 pixelX X coordinate of the point, in pixels.

System.Int64 pixelY Y coordinates of the point, in pixels.

System.Int32 levelOfDetail Level of detail, from 1 (lowest detail) to 23 (highest detail).

System.Boolean allowWraparound if set to true wraparound is allowed.

Returns

PointG PointG.

PixelXYToLatLong(PointL, Int32)

Converts a pixel from pixel XY coordinates at a specified level of detail into latitude/longitude WGS-84 coordinates (in degrees).

Declaration

public static PointG PixelXYToLatLong(PointL point, int levelOfDetail)

Parameters

PointL point X and Y coordinates of the point, in pixels.

System.Int32 levelOfDetail Level of detail, from 1 (lowest detail) to 23 (highest detail).

Returns

PointG

PixelXYToTileXY(Int64, Int64)

Converts pixel XY coordinates into tile XY coordinates of the tile containing the specified pixel.

Declaration

public static Point PixelXYToTileXY(long pixelX, long pixelY)

Parameters

System.Int64 pixelX Pixel X coordinate.

System.Int64 pixelY Pixel Y coordinate.

Returns

System.Drawing.Point

QuadKeyToTileXY(String, out Int32, out Int32, out Int32)

Converts a QuadKey into tile XY coordinates.

Declaration

public static void QuadKeyToTileXY(string quadKey, out int tileX, out int tileY, out int levelOfDetail)

Parameters

System.String quadKey QuadKey of the tile.

System.Int32 tileX Output parameter receiving the tile X coordinate.

System.Int32 tileY Output parameter receiving the tile Y coordinate.

System.Int32 levelOfDetail Output parameter receiving the level of detail.

TileXYToPixelXY(Int32, Int32)

Converts tile XY coordinates into pixel XY coordinates of the upper-left pixel of the specified tile.

Declaration

public static PointL TileXYToPixelXY(int tileX, int tileY)

Parameters

System.Int32 tileX Tile X coordinate.

System.Int32 tileY Tile Y coordinate.

Returns

PointL

TileXYToQuadKey(Int32, Int32, Int32)

Converts tile XY coordinates into a QuadKey at a specified level of detail.

Declaration

public static string TileXYToQuadKey(int tileX, int tileY, int levelOfDetail)

Parameters

System.Int32 tileX Tile X coordinate.

System.Int32 tileY Tile Y coordinate.

System.Int32 levelOfDetail Level of detail, from 1 (lowest detail) to 23 (highest detail).

Returns

System.String A string containing the QuadKey.