Class CircularArc

A class for creating circular arcs represented as a specified number of equidistant points

Inheritance

object

CircularArc

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: OpenSvg

Assembly: OpenSvg.dll

Syntax

public static class CircularArc

Methods

CreateArcPoints(Vector2, float, float, float, int)

Creates the points forming a circular arc with a certain startAngle and length in degrees The function also enable to control the order the arcs are generated This is useful when the arc points are to be inserted in a bigger polygon, and be connected with more points where the order is important A positive arcLength means counterclockwise point generation (standard degrees increase counter-clockwise) A negative arcLenght mean clockwise point generation

Declaration

public static IEnumerable<Vector2> CreateArcPoints(Vector2 circleCenter, float radius, float startAngle, float arcLength, int numberOfPoints)

Parameters

Type	Name	Description
Vector2	circleCenter	The center point of the arc circle
float	radius	The radius of the circular arc in points
float	startAngle	The start angle
float	arcLength	The arc length (positive or negative)
int	numberOfPoints	The number of points interpolated on the arc. The startAngle and the computed endAngle will always have a point, and thus 'numberOfPoints' must not be less than 2

Returns

Type	Description
IEnumerable<Vector2>	A list of points for the generated arc

Examples

Two equivalent circular arcs between 10 and 100 degrees (and thus 90 absolute degrees arcLength) can be generated in both opposite directions:

1. startAngle = 10, arcLength = 90 (counterclockwise generation from 10 degrees to 100 degrees)
2. startAngle = 100, arcLength = -90 (clockwise generation from 100 degrees to 10 degrees)

NormalizeDegreesToPositiveBelow360(float)

Normalizes degrees to a positive value in the range [0..360[.

Declaration

public static float NormalizeDegreesToPositiveBelow360(float degrees)

Parameters

Type	Name	Description
float	degrees	The degrees to normalize

Returns

Type	Description
float	A float.