[XmlIgnoreAttribute]
[ContentSerializerIgnoreAttribute]
public double Angle { get; set; }

<XmlIgnoreAttribute>
<ContentSerializerIgnoreAttribute>
Public Property Angle As Double
	Get
	Set

public:
[XmlIgnoreAttribute]
[ContentSerializerIgnoreAttribute]
property double Angle {
	double get ();
	void set (double value);
}

[<XmlIgnoreAttribute>]
[<ContentSerializerIgnoreAttribute>]
member Angle : float with get, set

Property Value

Setting the angle influences all components of the quaternion. The result is a unit quaternion that specifies a rotation of angle radians around the axis given by Axis.

This property assumes that the quaternion is a unit quaternion. It returns NaN if the w component is numerically greater than 1.0 or less than -1.0.

Reference