Keos::CMath Class Reference

Class to provide access to common mathematical functions. More...

#include <KeosMath.h>

List of all members.

Public Member Functions
	CMath ()
	Default constructor.
	~CMath ()
	Default destructor.
Static Public Member Functions
static uint	NearestPowerOfTwo (uint nValue)
	Return the nearest powewer of two of a number.
static Real	UnitRandom ()
	Return random number in [0,1].
static Real	RangeRandom (Real fLow, Real fHigh)
	Return random number in [fLow,fHigh].
static Real	SymmetricRandom ()
	Return random number in [-1,1].
static Real	DegreesToRadians (Real degrees)
	Transform degrees to radians.
static Real	RadiansToDegrees (Real radians)
	Transform radians to degrees.
static bool	RealEqual (Real a, Real b, Real tolerance=std::numeric_limits< Real >::epsilon())
	Compare 2 reals, using tolerance for inaccuracies.
static TVector4F	calculateFaceNormal (const TVector3F &v1, const TVector3F &v2, const TVector3F &v3)
	Calculate a face normal, including the w component which is the offset from the origin.
static TVector3F	calculateBasicFaceNormal (const TVector3F &v1, const TVector3F &v2, const TVector3F &v3)
	Calculate a face normal, no w-information.
static TVector4F	calculateFaceNormalWithoutNormalize (const TVector3F &v1, const TVector3F &v2, const TVector3F &v3)
	Calculate a face normal without normalize, including the w component which is the offset from the origin.
static TVector3F	calculateBasicFaceNormalWithoutNormalize (const TVector3F &v1, const TVector3F &v2, const TVector3F &v3)
	Calculate a face normal without normalize, no w-information.
Static Public Attributes
static const Real	POS_INFINITY
static const Real	NEG_INFINITY
static const Real	PI
static const Real	TWO_PI
static const Real	HALF_PI
static const Real	fDeg2Rad
static const Real	fRad2Deg

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Detailed Description

Class to provide access to common mathematical functions.

Note:

Code copied from Ogre3D (http://www.ogre3d.org)

Definition at line 274 of file KeosMath.h.

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Constructor & Destructor Documentation

Keos::CMath::CMath

(

)

Default constructor.

Definition at line 40 of file KeosMath.cpp.

Keos::CMath::~CMath

(

)

Default destructor.

Definition at line 44 of file KeosMath.cpp.

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Member Function Documentation

uint Keos::CMath::NearestPowerOfTwo

(

uint

nValue

)

[static]

Return the nearest powewer of two of a number.

Parameters:

nValue

Number to test.

Returns:

The nearest power of two.

Definition at line 48 of file KeosMath.cpp.

Real Keos::CMath::UnitRandom

(

)

[static]

Return random number in [0,1].

Definition at line 65 of file KeosMath.cpp.

Referenced by RangeRandom(), and SymmetricRandom().

Real Keos::CMath::RangeRandom	(	Real	fLow,
		Real	fHigh
	)			[static]

Return random number in [fLow,fHigh].

Definition at line 71 of file KeosMath.cpp.

References UnitRandom().

Real Keos::CMath::SymmetricRandom

(

)

[static]

Return random number in [-1,1].

Definition at line 77 of file KeosMath.cpp.

References UnitRandom().

static Real Keos::CMath::DegreesToRadians

(

Real

degrees

)

[inline, static]

Transform degrees to radians.

Definition at line 306 of file KeosMath.h.

Referenced by Keos::CDegree::valueRadians().

static Real Keos::CMath::RadiansToDegrees

(

Real

radians

)

[inline, static]

Transform radians to degrees.

Definition at line 313 of file KeosMath.h.

Referenced by Keos::CRadian::valueDegrees().

bool Keos::CMath::RealEqual	(	Real	a,
		Real	b,
		Real	tolerance = std::numeric_limits< Real >::epsilon()
	)			[static]

Compare 2 reals, using tolerance for inaccuracies.

Definition at line 83 of file KeosMath.cpp.

TVector4F Keos::CMath::calculateFaceNormal	(	const TVector3F &	v1,
		const TVector3F &	v2,
		const TVector3F &	v3
	)			[static]

Calculate a face normal, including the w component which is the offset from the origin.

Definition at line 92 of file KeosMath.cpp.

References calculateBasicFaceNormal(), Keos::VectorDot(), Keos::CVector3< T >::x, Keos::CVector3< T >::y, and Keos::CVector3< T >::z.

TVector3F Keos::CMath::calculateBasicFaceNormal	(	const TVector3F &	v1,
		const TVector3F &	v2,
		const TVector3F &	v3
	)			[static]

Calculate a face normal, no w-information.

Definition at line 100 of file KeosMath.cpp.

References Keos::CVector3< T >::Normalize(), and Keos::VectorCross().

Referenced by calculateFaceNormal().

TVector4F Keos::CMath::calculateFaceNormalWithoutNormalize	(	const TVector3F &	v1,
		const TVector3F &	v2,
		const TVector3F &	v3
	)			[static]

Calculate a face normal without normalize, including the w component which is the offset from the origin.

Definition at line 108 of file KeosMath.cpp.

References calculateBasicFaceNormalWithoutNormalize(), Keos::VectorDot(), Keos::CVector3< T >::x, Keos::CVector3< T >::y, and Keos::CVector3< T >::z.

TVector3F Keos::CMath::calculateBasicFaceNormalWithoutNormalize	(	const TVector3F &	v1,
		const TVector3F &	v2,
		const TVector3F &	v3
	)			[static]

Calculate a face normal without normalize, no w-information.

Definition at line 116 of file KeosMath.cpp.

References Keos::VectorCross().

Referenced by calculateFaceNormalWithoutNormalize().

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Member Data Documentation

const Real Keos::CMath::POS_INFINITY [static]

Definition at line 339 of file KeosMath.h.

const Real Keos::CMath::NEG_INFINITY [static]

Definition at line 340 of file KeosMath.h.

const Real Keos::CMath::PI [static]

Definition at line 341 of file KeosMath.h.

Referenced by Keos::CMeshGen::MakeSphere().

const Real Keos::CMath::TWO_PI [static]

Definition at line 342 of file KeosMath.h.

Referenced by Keos::CMeshGen::MakeSphere().

const Real Keos::CMath::HALF_PI [static]

Definition at line 343 of file KeosMath.h.

const Real Keos::CMath::fDeg2Rad [static]

Definition at line 344 of file KeosMath.h.

const Real Keos::CMath::fRad2Deg [static]

Definition at line 345 of file KeosMath.h.

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

• KeosEngine/KeosMath.h
• KeosEngine/KeosMath.cpp

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