StdMeshQuaternion Struct Reference

#include <StdMeshMath.h>

Public Member Functions
float	LenSqr () const
void	Normalize ()

Static Public Member Functions
static StdMeshQuaternion	Zero ()
static StdMeshQuaternion	AngleAxis (float theta, const StdMeshVector &axis)
static StdMeshQuaternion	Nlerp (const StdMeshQuaternion &lhs, const StdMeshQuaternion &rhs, float w)

Public Attributes
float	w
float	x
float	y
float	z

Detailed Description

Definition at line 58 of file StdMeshMath.h.

Member Function Documentation

AngleAxis()

StdMeshQuaternion StdMeshQuaternion::AngleAxis ( float  theta, const StdMeshVector &  axis  )

static

Definition at line 72 of file StdMeshMath.cpp.

{
    StdMeshQuaternion q;
    const float theta2 = theta/2.0f;
    const float s = sin(theta2);
    q.w = cos(theta2);
    q.x = s*axis.x;
    q.y = s*axis.y;
    q.z = s*axis.z;
    return q;
}

References s, w, StdMeshVector::x, x, StdMeshVector::y, y, StdMeshVector::z, and z.

Referenced by StdMeshMatrix::Decompose(), StdMeshSkeletonLoader::LoadSkeletonXml(), and StdMeshTransformation::Rotate().

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LenSqr()

float StdMeshQuaternion::LenSqr ( ) const

inline

Definition at line 66 of file StdMeshMath.h.

{ return w*w+x*x+y*y+z*z; }

References w, x, y, and z.

Referenced by Normalize().

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Nlerp()

StdMeshQuaternion StdMeshQuaternion::Nlerp ( const StdMeshQuaternion &  lhs, const StdMeshQuaternion &  rhs, float  w  )

static

Definition at line 93 of file StdMeshMath.cpp.

{
    StdMeshQuaternion q;
    float c = lhs.w * rhs.w + lhs.x * rhs.x + lhs.y * rhs.y + lhs.z * rhs.z;
    if (c < 0.0f)
        q = lhs + w * (-rhs - lhs);
    else
        q = lhs + w * ( rhs - lhs);
    q.Normalize();
    return q;
}

References Normalize(), w, x, y, and z.

Referenced by StdMeshTransformation::Nlerp().

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Normalize()

void StdMeshQuaternion::Normalize

(

)

Definition at line 84 of file StdMeshMath.cpp.

{
    float length = sqrt(LenSqr());
    w /= length;
    x /= length;
    y /= length;
    z /= length;
}

References LenSqr(), w, x, y, and z.

Referenced by Nlerp().

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Zero()

StdMeshQuaternion StdMeshQuaternion::Zero ( )

static

Definition at line 62 of file StdMeshMath.cpp.

{
    StdMeshQuaternion q;
    q.w = 0.0f;
    q.x = 0.0f;
    q.y = 0.0f;
    q.z = 0.0f;
    return q;
}

References w, x, y, and z.

Referenced by StdMeshTransformation::Zero().

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Member Data Documentation

w

float StdMeshQuaternion::w

Definition at line 60 of file StdMeshMath.h.

Referenced by AngleAxis(), StdMeshTransformation::Identity(), StdMeshTransformation::Inverse(), LenSqr(), Nlerp(), Normalize(), operator*(), operator*=(), operator+=(), operator-(), Ogre::Skeleton::ChunkBone::ReadImpl(), Ogre::Skeleton::ChunkAnimationTrackKF::ReadImpl(), StdMeshTransformation::Scale(), StdMeshMatrix::Transform(), StdMeshMatrix::TransformInverse(), OgreToClonk::TransformQuaternion(), StdMeshTransformation::Translate(), and Zero().

x

float StdMeshQuaternion::x

Definition at line 61 of file StdMeshMath.h.

Referenced by AngleAxis(), StdMeshTransformation::Identity(), StdMeshTransformation::Inverse(), LenSqr(), Nlerp(), Normalize(), operator*(), operator*=(), operator+=(), operator-(), Ogre::Skeleton::ChunkBone::ReadImpl(), Ogre::Skeleton::ChunkAnimationTrackKF::ReadImpl(), StdMeshTransformation::Scale(), StdMeshMatrix::Transform(), StdMeshMatrix::TransformInverse(), OgreToClonk::TransformQuaternion(), StdMeshTransformation::Translate(), and Zero().

y

float StdMeshQuaternion::y

Definition at line 61 of file StdMeshMath.h.

Referenced by AngleAxis(), StdMeshTransformation::Identity(), StdMeshTransformation::Inverse(), LenSqr(), Nlerp(), Normalize(), operator*(), operator*=(), operator+=(), operator-(), Ogre::Skeleton::ChunkBone::ReadImpl(), Ogre::Skeleton::ChunkAnimationTrackKF::ReadImpl(), StdMeshTransformation::Scale(), StdMeshMatrix::Transform(), StdMeshMatrix::TransformInverse(), OgreToClonk::TransformQuaternion(), StdMeshTransformation::Translate(), and Zero().

z

float StdMeshQuaternion::z

Definition at line 61 of file StdMeshMath.h.

Referenced by AngleAxis(), StdMeshTransformation::Identity(), StdMeshTransformation::Inverse(), LenSqr(), Nlerp(), Normalize(), operator*(), operator*=(), operator+=(), operator-(), Ogre::Skeleton::ChunkBone::ReadImpl(), Ogre::Skeleton::ChunkAnimationTrackKF::ReadImpl(), StdMeshTransformation::Scale(), StdMeshMatrix::Transform(), StdMeshMatrix::TransformInverse(), OgreToClonk::TransformQuaternion(), StdMeshTransformation::Translate(), and Zero().

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The documentation for this struct was generated from the following files:

• StdMeshMath.h
• StdMeshMath.cpp