Classes
class	Camera

class	RollingAverage

class	ScrollMomentum
	Utility class for adding simple momentum to 2D or 3D UI elements. More...

class	SmartArrayDestructor
	alternative destructor for arrays of objects More...

class	SmartInstanceDestructor
	default destruction template class used by smart pointer. More...

class	SmartPointer

Functions
const char *	BoolToStr (uint32_t bVal)

Leap::Vector	CartesianToSpherical (const Leap::Vector &vCartesian)

template<typename T >
T	Clamp (T inVal, T minVal, T maxVal)

Leap::Vector	ComponentWiseMax (const Leap::Vector &vLHS, const Leap::Vector &vRHS)

Leap::Vector	ComponentWiseMin (const Leap::Vector &vLHS, const Leap::Vector &vRHS)

Leap::Vector	ComponentWiseReciprocal (const Leap::Vector &vVec)

Leap::Vector	ComponentWiseScale (const Leap::Vector &vLHS, const Leap::Vector &vRHS)

float	Elevation (const Leap::Vector &vVec)
	compute the spherical elevation of a vector direction in y above the z/x plane More...

Leap::Matrix	ExtractRotation (const Leap::Matrix &mtxTransform)
	create a new matrix with just the rotation block from the argument matrix More...

template<class Vec2 >
Leap::Vector	FromVector2 (const Vec2 &vIn, float fZ=0.0f)
	requires that the source vector type have direct member access with names x, y More...

template<class Vec3 >
Leap::Vector	FromVector3 (const Vec3 &vIn)
	requires that the source vector type have direct member access with names x, y, z More...

float	Heading (const Leap::Vector &vVec)
	compute the polar/spherical heading of a vector direction in z/x plane More...

template<typename T >
bool	IsNearEqual (const T &a, const T &b)
	works with Vectors as well as floats More...

bool	IsNearZero (float fVal)

bool	IsNearZero (const Leap::Vector &vVec)

template<typename InterpType , typename ParamType >
InterpType	Linterp (InterpType a, InterpType b, ParamType t)
	works with Vector as well as floating point scalar types. More...

template<typename T >
T	Max (T lhs, T rhs)

float	MaxComponent (const Leap::Vector &vVec)

template<typename T >
T	Min (T lhs, T rhs)

float	MinComponent (const Leap::Vector &vVec)

Leap::Vector	NormalizeSpherical (const Leap::Vector &vSpherical)
	set magnitude to 1 and bring heading to (-Pi,Pi], elevation into [-Pi/2, Pi/2] More...

Leap::Matrix	RigidInverse (const Leap::Matrix &mtxTransform)

Leap::Matrix	RotationInverse (const Leap::Matrix &mtxRot)
	returns a matrix representing the inverse rotation by simple transposition of the rotation block. More...

Leap::Vector	SphericalToCartesian (const Leap::Vector &vSpherical)

Variables
static const float	kf2Pi = kfPi + kfPi

static const float	kfEpsilon = 0.00001f

static const float	kfHalfPi = kfPi * 0.5f

static const float	kfPi = Leap::PI

Function Documentation

const char* LeapUtil::BoolToStr ( uint32_t bVal )

inline

Definition at line 209 of file LeapUtil.h.

Leap::Vector LeapUtil::CartesianToSpherical ( const Leap::Vector & vCartesian )

inline

convert from Cartesian (rectangular) coordinates to spherical coordinates (magnitude, heading, elevation)

Definition at line 168 of file LeapUtil.h.

template<typename T >

T LeapUtil::Clamp	(	T	inVal,
		T	minVal,
		T	maxVal
	)

Definition at line 58 of file LeapUtil.h.

Leap::Vector LeapUtil::ComponentWiseMax	(	const Leap::Vector &	vLHS,
		const Leap::Vector &	vRHS
	)

inline

Definition at line 129 of file LeapUtil.h.

Leap::Vector LeapUtil::ComponentWiseMin	(	const Leap::Vector &	vLHS,
		const Leap::Vector &	vRHS
	)

inline

Definition at line 124 of file LeapUtil.h.

Leap::Vector LeapUtil::ComponentWiseReciprocal ( const Leap::Vector & vVec )

inline

Definition at line 139 of file LeapUtil.h.

Leap::Vector LeapUtil::ComponentWiseScale	(	const Leap::Vector &	vLHS,
		const Leap::Vector &	vRHS
	)

inline

Definition at line 134 of file LeapUtil.h.

float LeapUtil::Elevation ( const Leap::Vector & vVec )

inline

compute the spherical elevation of a vector direction in y above the z/x plane

Definition at line 161 of file LeapUtil.h.

Leap::Matrix LeapUtil::ExtractRotation ( const Leap::Matrix & mtxTransform )

inline

create a new matrix with just the rotation block from the argument matrix

Definition at line 102 of file LeapUtil.h.

template<class Vec2 >

Leap::Vector LeapUtil::FromVector2	(	const Vec2 &	vIn,
		float	fZ = `0.0f`
	)

requires that the source vector type have direct member access with names x, y

Definition at line 72 of file LeapUtil.h.

template<class Vec3 >

Leap::Vector LeapUtil::FromVector3 ( const Vec3 & vIn )

requires that the source vector type have direct member access with names x, y, z

Definition at line 79 of file LeapUtil.h.

float LeapUtil::Heading ( const Leap::Vector & vVec )

inline

compute the polar/spherical heading of a vector direction in z/x plane

Definition at line 155 of file LeapUtil.h.

template<typename T >

bool LeapUtil::IsNearEqual	(	const T &	a,
		const T &	b
	)

inline

works with Vectors as well as floats

Definition at line 96 of file LeapUtil.h.

bool LeapUtil::IsNearZero ( float fVal )

inline

Definition at line 84 of file LeapUtil.h.

bool LeapUtil::IsNearZero ( const Leap::Vector & vVec )

inline

Definition at line 89 of file LeapUtil.h.

template<typename InterpType , typename ParamType >

InterpType LeapUtil::Linterp	(	InterpType	a,
		InterpType	b,
		ParamType	t
	)

works with Vector as well as floating point scalar types.

Definition at line 65 of file LeapUtil.h.

template<typename T >

T LeapUtil::Max	(	T	lhs,
		T	rhs
	)

Definition at line 52 of file LeapUtil.h.

float LeapUtil::MaxComponent ( const Leap::Vector & vVec )

inline

Definition at line 149 of file LeapUtil.h.

template<typename T >

T LeapUtil::Min	(	T	lhs,
		T	rhs
	)

Definition at line 46 of file LeapUtil.h.

float LeapUtil::MinComponent ( const Leap::Vector & vVec )

inline

Definition at line 144 of file LeapUtil.h.

Leap::Vector LeapUtil::NormalizeSpherical ( const Leap::Vector & vSpherical )

inline

set magnitude to 1 and bring heading to (-Pi,Pi], elevation into [-Pi/2, Pi/2]

Definition at line 174 of file LeapUtil.h.

Leap::Matrix LeapUtil::RigidInverse ( const Leap::Matrix & mtxTransform )

inline

returns a matrix that is the orthonormal inverse of the argument matrix. this is only valid if the input matrix is orthonormal (the basis vectors are mutually perpendicular and of length 1)

Definition at line 117 of file LeapUtil.h.

Leap::Matrix LeapUtil::RotationInverse ( const Leap::Matrix & mtxRot )

inline

returns a matrix representing the inverse rotation by simple transposition of the rotation block.

Definition at line 108 of file LeapUtil.h.

Leap::Vector LeapUtil::SphericalToCartesian ( const Leap::Vector & vSpherical )

inline

convert from spherical coordinates (magnitude, heading, elevation) to Cartesian (rectangular) coordinates

Definition at line 196 of file LeapUtil.h.

Variable Documentation

const float LeapUtil::kf2Pi = kfPi + kfPi

static

Definition at line 41 of file LeapUtil.h.

const float LeapUtil::kfEpsilon = 0.00001f

static

Definition at line 43 of file LeapUtil.h.

const float LeapUtil::kfHalfPi = kfPi * 0.5f

static

Definition at line 42 of file LeapUtil.h.

const float LeapUtil::kfPi = Leap::PI

static

LeapMath is not intended to be a full-function vector math library. It defines a few useful classes that are needed to pass vector values around and do a few basic spatial operations. You are highly encouraged to use a complete and optimized vector math library for any serious computation. math utility functions To minimize additional code requirements for Leap samples no external math library is used. These utility functions provide extra functionality not available in LeapMath. In general this code is designed for transparency and simplicity rather than speed. It is a minimal subset of extra functionality needed to implement LeapScene and the sample code. It is not intended to be a complete vector math utility library.

Definition at line 40 of file LeapUtil.h.

Classes

Functions

Variables

Function Documentation

Variable Documentation