EllipseF

public struct EllipseF : IComparable<EllipseF>, IEquatable<EllipseF>

Adds an Ellipse type to the Eto.Drawing namespace.

Constructors

EllipseF

public EllipseF(PointF centre, float radiusX, float radiusY, float angle)

Create a roated ellipse.

Parameters:

centre (PointF)	Centre of ellipse.
radiusX (float)	X radius.
radiusY (float)	Y radius.
angle (float)	Rotation angle in degrees.

EllipseF

public EllipseF(PointF centre, float radiusX, float radiusY)

Create a horizontal ellipse.

Parameters:

centre (PointF)	Centre of ellipse.
radiusX (float)	X radius.
radiusY (float)	Y radius.

Properties

Angle

public float Angle { get; set; }

Gets or sets the rotational angle of the ellipse (in degrees, clockwise).

Centre

public PointF Centre { get; set; }

Gets or sets the centre point of the ellipse.

Empty

public static EllipseF Empty { get; }

Returns an empty ellipse.

ImplicitEquation

public EllipseImplicitEquation ImplicitEquation { get; }

Gets the equation for the current circle.

IsEmpty

public bool IsEmpty { get; }

Gets whether this circle is empty, ie. has a radius of exactly zero.

IsUnset

public bool IsUnset { get; }

Gets whether this circle is unset, ie. whether any of its values are NaNs.

ParametericEquation

public EllipseParametricEquation ParametericEquation { get; }

Gets the equation for the current circle.

QuadXNegative

public PointF QuadXNegative { get; }

Gets the quad point along the ellipse negative X direction.

QuadXPositive

public PointF QuadXPositive { get; }

Gets the quad point along the ellipse positive X direction.

QuadYNegative

public PointF QuadYNegative { get; }

Gets the quad point along the ellipse negative Y direction.

QuadYPositive

public PointF QuadYPositive { get; }

Gets the quad point along the ellipse positive Y direction.

RadiusX

public float RadiusX { get; set; }

Gets or sets the x radius of the ellipse.

RadiusY

public float RadiusY { get; set; }

Gets or sets the y radius of the ellipse.

Unset

public static EllipseF Unset { get; }

Returns an unset ellipse.

Methods

BezierPoints

public PointF[][] BezierPoints()

Create an array of four bezier control-points, one for each quadrant.

Returns: Array containing four pointf arrays.

CompareTo

public int CompareTo(EllipseF other)

Compare this ellipse to another.

Parameters:

other (EllipseF)

Ellipse to compare to.

Returns: Sort order.

Equals

public bool Equals(EllipseF other)

Compare one ellipse to another.

Parameters:

other (EllipseF)

Ellipse to compare to.

Returns: True if ellipses are equal. Note that ellipses can have identical shape, yet be defined by different properties. This method checks field equality, not shape similarity.

ToPath

public GraphicsPath ToPath()

Create a graphics path containing this ellipse.

Returns: Graphics path.

ToPath

public GraphicsPath ToPath(float angle, float sweep)

Create a graphics path containing a polyline approximation of some subsection of this ellipse.

Parameters:

angle (float)	Start angle (degrees, clockwise), although note we're talking parameterisation angles here.
sweep (float)	Sweep angle (degrees, clockwise), although note we're talking parameterisation angles here.

ToString

public override string ToString()

Gets a string representation of this ellipse.

Returns: Description.

Overrides: ValueType.ToString