Constructor EllipticArcSegment

EllipticArcSegment(MapPoint, Double, Double, Double, Double, Double, SpatialReference)

Initializes a new instance of the EllipticArcSegment class based on parameters that define an ellipse and the portion of that ellipse that defines the arc.

Declaration

public EllipticArcSegment(MapPoint centerPoint, double rotationAngle, double semiMajorAxis, double minorMajorRatio, double startAngle, double centralAngle, SpatialReference spatialReference)

Parameters

Type	Name	Description
MapPoint	centerPoint	The center point of the embedded ellipse.
System.Double	rotationAngle	The angle in radians by which the major axis of the embedded ellipse is rotated from the x-axis. A positive value corresponds to a counterclockwise rotation from the x-axis. The value is taken in form of the modulo of 2 * PI (360 degrees); for example an input rotation angle of 7.5 radians (430 degrees) would return a segment with a rotation angle of 1.22 radians (70 degrees).
System.Double	semiMajorAxis	The length of the semi-major axis of the embedded ellipse in the units of the spatial reference.
System.Double	minorMajorRatio	The ratio of the length of the semi-minor axis to the length of the semi-major axis of the embedded ellipse.
System.Double	startAngle	The parametric angle in radians of the start of the arc relative to the major axis of the embedded ellipse. A positive value corresponds to a counterclockwise rotation from the major axis. The value is taken in form of the modulo of 2 * PI (360 degrees); for example an input rotation angle of 7.5 radians (430 degrees) would return a segment with a rotation angle of 1.22 radians (70 degrees).
System.Double	centralAngle	The parametric angle in radians measuring the span of the arc from startAngle to EndAngle. A positive value corresponds to a counterclockwise arc sweep. Values larger than 2 * PI (360 degrees) return a segment with a central angle of exactly 2 * PI (360 degrees), resulting in a full ellipse where the start and end points are identical.
SpatialReference	spatialReference	A spatial reference to use for the segment if the center point parameter does not have a spatial reference set.

Remarks

The spatial reference parameter is used if the center point parameter has a null spatial reference. If both spatial references are supplied, they must be equal.

The z-value and m-value of the center point (if present) are ignored. Use EllipticArcSegment(MapPoint, MapPoint, Double, Boolean, Boolean, Double, Double, SpatialReference) to create an EllipticArcSegment with end points with a z-value and/or m-value.

Exceptions

Type	Condition
System.ArgumentException	Indicates that the spatial reference objects supplied (as a parameter or as a property of the center point parameter, that are not null), are not equal.

Applies to

Platforms and versions

Target	Versions
.NET Standard 2.0	100.12 - 200.6
.NET	100.13 - 200.6
.NET Windows	100.13 - 200.6
.NET Android	200.0 - 200.6
.NET iOS	200.0 - 200.6
.NET Framework	100.12 - 200.6
Xamarin.Android	100.12 - 100.15
Xamarin.iOS	100.12 - 100.15
UWP	100.12 - 200.6

EllipticArcSegment(MapPoint, MapPoint, Double, Boolean, Boolean, Double, Double, SpatialReference)

Initializes a new instance of the EllipticArcSegment class from the given start and end points, and other parameters that define an ellipse.

Declaration

public EllipticArcSegment(MapPoint startPoint, MapPoint endPoint, double rotationAngle, bool isMinor, bool isCounterClockwise, double semiMajorAxis, double minorMajorRatio, SpatialReference spatialReference)

Parameters

Type	Name	Description
MapPoint	startPoint	The start point of the segment.
MapPoint	endPoint	The end point of the segment.
System.Double	rotationAngle	The angle in radians by which the major axis of the embedded ellipse is rotated from the x-axis. A positive value corresponds to a counterclockwise rotation from the x-axis.
System.Boolean	isMinor	true if CentralAngle of the segment is less than PI.
System.Boolean	isCounterClockwise	true if the direction of the segment, from start point to end point, proceeds in a counterclockwise direction, otherwise false.
System.Double	semiMajorAxis	The length of the semi-major axis of the embedded ellipse in the units of the spatial reference.
System.Double	minorMajorRatio	The ratio of the length of the semi-minor axis to the length of the semi-major axis of the embedded ellipse.
SpatialReference	spatialReference	A spatial reference to use for the segment if the points do not have spatial references set.

Remarks

The z-value and m-value of the start and end points (if present) are used in the EllipticArcSegment.

To maintain the given startPoint and endPoint in the new segment, the other parameters may be adjusted if required. Such adjustments are made according to the Scalable Vector Graphics 1.1 Specification, Appendix F.6.5. If these cannot be adjusted sufficiently, an arc represented with a straight line is created.

Exceptions

Type	Condition
System.ArgumentException	Indicates that the spatial reference objects supplied (as a parameter or as a property of the center point parameter, that are not null), are not equal.

Applies to

Platforms and versions

Target	Versions
.NET Standard 2.0	100.12 - 200.6
.NET	100.13 - 200.6
.NET Windows	100.13 - 200.6
.NET Android	200.0 - 200.6
.NET iOS	200.0 - 200.6
.NET Framework	100.12 - 200.6
Xamarin.Android	100.12 - 100.15
Xamarin.iOS	100.12 - 100.15
UWP	100.12 - 200.6