UnsafeNativeMethods.Quaternion Class

Language:

Note: This documentation is preliminary and is subject to change.

Describes and manipulates a quaternion.

Note: For programming in Microsoft® Visual Basic® .NET or Microsoft® JScript® .NET, use the methods of the Microsoft.DirectX.Quaternion structure.

Definition

Visual Basic .NET NotInheritable Public Class Quaternion
Inherits Object

C# public sealed class Quaternion : Object

Managed C++ public __gc __sealed class Quaternion : public Object

JScript .NET public class Quaternion extends Object

Visual Basic .NET	NotInheritable Public Class Quaternion Inherits Object
C#	public sealed class Quaternion : Object
Managed C++	public __gc __sealed class Quaternion : public Object
JScript .NET	public class Quaternion extends Object

Members Table

The following table lists the members exposed by the object. Click a tab on the left to choose the type of member you want to view.

Methods

Method Description

BaryCentric Returns a quaternion in barycentric coordinates.
Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.

Conjugate Returns the conjugate of a quaternion.
Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.

Dot Returns the dot product of two quaternions.
Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.

Exp Calculates the exponential.
Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.

Invert Conjugates and re-normalizes a quaternion.
Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.

Length Returns the length of a quaternion.
Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.

LengthSq Returns the square of a quaternion's length.
Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.

Ln Calculates the natural logarithm.
Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.

Multiply Multiplies two quaternions.
Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.

Normalize Returns the normal of a quaternion.
Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.

RotationAxis Builds a quaternion that is rotated around an arbitrary axis.
Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.

RotationMatrix Builds a quaternion from a rotation matrix.
Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.

Slerp Interpolates between two quaternions, using spherical linear interpolation.
Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.

Squad Interpolates between quaternions, using spherical quadrangle interpolation.
Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.

SquadSetup Sets up control points for spherical quadrangle interpolation.
Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.

ToAxisAngle Computes a quaternion's axis and angle of rotation.
Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.

Method	Description
BaryCentric	Returns a quaternion in barycentric coordinates. Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.
Conjugate	Returns the conjugate of a quaternion. Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.
Dot	Returns the dot product of two quaternions. Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.
Exp	Calculates the exponential. Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.
Invert	Conjugates and re-normalizes a quaternion. Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.
Length	Returns the length of a quaternion. Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.
LengthSq	Returns the square of a quaternion's length. Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.
Ln	Calculates the natural logarithm. Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.
Multiply	Multiplies two quaternions. Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.
Normalize	Returns the normal of a quaternion. Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.
RotationAxis	Builds a quaternion that is rotated around an arbitrary axis. Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.
RotationMatrix	Builds a quaternion from a rotation matrix. Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.
Slerp	Interpolates between two quaternions, using spherical linear interpolation. Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.
Squad	Interpolates between quaternions, using spherical quadrangle interpolation. Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.
SquadSetup	Sets up control points for spherical quadrangle interpolation. Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.
ToAxisAngle	Computes a quaternion's axis and angle of rotation. Note: For programming in Visual Basic .NET or JScript .NET, use the equivalent method in the Microsoft.DirectX structures.

Inheritance Hierarchy

Object
UnsafeNativeMethods.Quaternion

Remarks

Quaternions add a fourth element to the [ x, y, z] values that define a vector, resulting in arbitrary 4-D vectors. However, the following example illustrates how each element of a unit quaternion relates to an axis-angle rotation, where q represents a unit quaternion (x, y, z, w), axis is normalized, and theta is the desired counterclockwise (CCW) rotation around the axis.
q.x = sin(theta/2) * axis.x

q.y = sin(theta/2) * axis.y

q.z = sin(theta/2) * axis.z

q.w = cos(theta/2)

Class Information

Namespace Microsoft.DirectX

Assembly Microsoft.DirectX (microsoft.directx.dll)

Strong Name Microsoft.DirectX, Version=1.0.2902.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35

Namespace	Microsoft.DirectX
Assembly	Microsoft.DirectX (microsoft.directx.dll)
Strong Name	Microsoft.DirectX, Version=1.0.2902.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35