Vec3 Class Reference

#include <Vec3.h>

Public Types
using	Type = Vec4::Type
using	ArgType = Vec3Arg

Public Member Functions
	Vec3 ()=default
	Constructor.
	Vec3 (const Vec3 &inRHS)=default
Vec3 &	operator= (const Vec3 &inRHS)=default
JPH_INLINE	Vec3 (Vec4Arg inRHS)
JPH_INLINE	Vec3 (Type inRHS)
JPH_INLINE	Vec3 (const Float3 &inV)
	Load 3 floats from memory.
JPH_INLINE	Vec3 (float inX, float inY, float inZ)
	Create a vector from 3 components.
JPH_INLINE float	GetX () const
	Get individual components.
JPH_INLINE float	GetY () const
JPH_INLINE float	GetZ () const
JPH_INLINE void	SetX (float inX)
	Set individual components.
JPH_INLINE void	SetY (float inY)
JPH_INLINE void	SetZ (float inZ)
JPH_INLINE void	Set (float inX, float inY, float inZ)
	Set all components.
JPH_INLINE float	operator[] (uint inCoordinate) const
	Get float component by index.
JPH_INLINE void	SetComponent (uint inCoordinate, float inValue)
	Set float component by index.
JPH_INLINE bool	operator== (Vec3Arg inV2) const
	Comparison.
JPH_INLINE bool	operator!= (Vec3Arg inV2) const
JPH_INLINE bool	IsClose (Vec3Arg inV2, float inMaxDistSq=1.0e-12f) const
	Test if two vectors are close.
JPH_INLINE bool	IsNearZero (float inMaxDistSq=1.0e-12f) const
	Test if vector is near zero.
JPH_INLINE bool	IsNormalized (float inTolerance=1.0e-6f) const
	Test if vector is normalized.
JPH_INLINE bool	IsNaN () const
	Test if vector contains NaN elements.
JPH_INLINE Vec3	operator* (Vec3Arg inV2) const
	Multiply two float vectors (component wise)
JPH_INLINE Vec3	operator* (float inV2) const
	Multiply vector with float.
JPH_INLINE Vec3	operator/ (float inV2) const
	Divide vector by float.
JPH_INLINE Vec3 &	operator*= (float inV2)
	Multiply vector with float.
JPH_INLINE Vec3 &	operator*= (Vec3Arg inV2)
	Multiply vector with vector.
JPH_INLINE Vec3 &	operator/= (float inV2)
	Divide vector by float.
JPH_INLINE Vec3	operator+ (Vec3Arg inV2) const
	Add two float vectors (component wise)
JPH_INLINE Vec3 &	operator+= (Vec3Arg inV2)
	Add two float vectors (component wise)
JPH_INLINE Vec3	operator- () const
	Negate.
JPH_INLINE Vec3	operator- (Vec3Arg inV2) const
	Subtract two float vectors (component wise)
JPH_INLINE Vec3 &	operator-= (Vec3Arg inV2)
	Add two float vectors (component wise)
JPH_INLINE Vec3	operator/ (Vec3Arg inV2) const
	Divide (component wise)
template<uint32 SwizzleX, uint32 SwizzleY, uint32 SwizzleZ>
JPH_INLINE Vec3	Swizzle () const
	Swizzle the elements in inV.
JPH_INLINE Vec4	SplatX () const
	Replicate the X component to all components.
JPH_INLINE Vec4	SplatY () const
	Replicate the Y component to all components.
JPH_INLINE Vec4	SplatZ () const
	Replicate the Z component to all components.
JPH_INLINE int	GetLowestComponentIndex () const
	Get index of component with lowest value.
JPH_INLINE int	GetHighestComponentIndex () const
	Get index of component with highest value.
JPH_INLINE Vec3	Abs () const
	Return the absolute value of each of the components.
JPH_INLINE Vec3	Reciprocal () const
	Reciprocal vector (1 / value) for each of the components.
JPH_INLINE Vec3	Cross (Vec3Arg inV2) const
	Cross product.
JPH_INLINE Vec3	DotV (Vec3Arg inV2) const
	Dot product, returns the dot product in X, Y and Z components.
JPH_INLINE Vec4	DotV4 (Vec3Arg inV2) const
	Dot product, returns the dot product in X, Y, Z and W components.
JPH_INLINE float	Dot (Vec3Arg inV2) const
	Dot product.
JPH_INLINE float	LengthSq () const
	Squared length of vector.
JPH_INLINE float	Length () const
	Length of vector.
JPH_INLINE Vec3	Normalized () const
	Normalize vector.
JPH_INLINE Vec3	NormalizedOr (Vec3Arg inZeroValue) const
	Normalize vector or return inZeroValue if the length of the vector is zero.
JPH_INLINE void	StoreFloat3 (Float3 *outV) const
	Store 3 floats to memory.
JPH_INLINE UVec4	ToInt () const
	Convert each component from a float to an int.
JPH_INLINE UVec4	ReinterpretAsInt () const
	Reinterpret Vec3 as a UVec4 (doesn't change the bits)
JPH_INLINE float	ReduceMin () const
	Get the minimum of X, Y and Z.
JPH_INLINE float	ReduceMax () const
	Get the maximum of X, Y and Z.
JPH_INLINE Vec3	Sqrt () const
	Component wise square root.
JPH_INLINE Vec3	GetNormalizedPerpendicular () const
	Get normalized vector that is perpendicular to this vector.
JPH_INLINE Vec3	GetSign () const
	Get vector that contains the sign of each element (returns 1.0f if positive, -1.0f if negative)
JPH_INLINE void	CheckW () const
	Internal helper function that checks that W is equal to Z, so e.g. dividing by it should not generate div by 0.
template<uint32 SwizzleX, uint32 SwizzleY, uint32 SwizzleZ>
Vec3	Swizzle () const

Static Public Member Functions
static JPH_INLINE Vec3	sZero ()
	Vector with all zeros.
static JPH_INLINE Vec3	sNaN ()
	Vector with all NaN's.
static JPH_INLINE Vec3	sAxisX ()
	Vectors with the principal axis.
static JPH_INLINE Vec3	sAxisY ()
static JPH_INLINE Vec3	sAxisZ ()
static JPH_INLINE Vec3	sReplicate (float inV)
	Replicate inV across all components.
static JPH_INLINE Vec3	sLoadFloat3Unsafe (const Float3 &inV)
	Load 3 floats from memory (reads 32 bits extra which it doesn't use)
static JPH_INLINE Vec3	sMin (Vec3Arg inV1, Vec3Arg inV2)
	Return the minimum value of each of the components.
static JPH_INLINE Vec3	sMax (Vec3Arg inV1, Vec3Arg inV2)
	Return the maximum of each of the components.
static JPH_INLINE Vec3	sClamp (Vec3Arg inV, Vec3Arg inMin, Vec3Arg inMax)
	Clamp a vector between min and max (component wise)
static JPH_INLINE UVec4	sEquals (Vec3Arg inV1, Vec3Arg inV2)
	Equals (component wise)
static JPH_INLINE UVec4	sLess (Vec3Arg inV1, Vec3Arg inV2)
	Less than (component wise)
static JPH_INLINE UVec4	sLessOrEqual (Vec3Arg inV1, Vec3Arg inV2)
	Less than or equal (component wise)
static JPH_INLINE UVec4	sGreater (Vec3Arg inV1, Vec3Arg inV2)
	Greater than (component wise)
static JPH_INLINE UVec4	sGreaterOrEqual (Vec3Arg inV1, Vec3Arg inV2)
	Greater than or equal (component wise)
static JPH_INLINE Vec3	sFusedMultiplyAdd (Vec3Arg inMul1, Vec3Arg inMul2, Vec3Arg inAdd)
	Calculates inMul1 * inMul2 + inAdd.
static JPH_INLINE Vec3	sSelect (Vec3Arg inV1, Vec3Arg inV2, UVec4Arg inControl)
	Component wise select, returns inV1 when highest bit of inControl = 0 and inV2 when highest bit of inControl = 1.
static JPH_INLINE Vec3	sOr (Vec3Arg inV1, Vec3Arg inV2)
	Logical or (component wise)
static JPH_INLINE Vec3	sXor (Vec3Arg inV1, Vec3Arg inV2)
	Logical xor (component wise)
static JPH_INLINE Vec3	sAnd (Vec3Arg inV1, Vec3Arg inV2)
	Logical and (component wise)
static JPH_INLINE Vec3	sUnitSpherical (float inTheta, float inPhi)
template<class Random >
static Vec3	sRandom (Random &inRandom)
	Get random unit vector.
static JPH_INLINE Type	sFixW (Type inValue)
	Internal helper function that ensures that the Z component is replicated to the W component to prevent divisions by zero.

Public Attributes
union {
Type   mValue
float   mF32 [4]
};

Static Public Attributes
static JPH_EXPORT const StaticArray< Vec3, 1026 >	sUnitSphere
	A set of vectors uniformly spanning the surface of a unit sphere, usable for debug purposes.

Friends
JPH_INLINE Vec3	operator* (float inV1, Vec3Arg inV2)
	Multiply vector with float.
ostream &	operator<< (ostream &inStream, Vec3Arg inV)
	To String.

Detailed Description

3 component vector (stored as 4 vectors). Note that we keep the 4th component the same as the 3rd component to avoid divisions by zero when JPH_FLOATING_POINT_EXCEPTIONS_ENABLED defined

Member Typedef Documentation

ArgType

using Vec3::ArgType = Vec3Arg

Type

using Vec3::Type = Vec4::Type

Constructor & Destructor Documentation

Vec3() [1/6]

Vec3::Vec3 ( )

default

Constructor.

Intentionally not initialized for performance reasons

Vec3() [2/6]

Vec3::Vec3 ( const Vec3 &  inRHS )

default

Vec3() [3/6]

Vec3::Vec3 ( Vec4Arg  inRHS )

explicit

Vec3() [4/6]

JPH_INLINE Vec3::Vec3 ( Type  inRHS )

inline

Vec3() [5/6]

Vec3::Vec3 ( const Float3 &  inV )

explicit

Load 3 floats from memory.

Vec3() [6/6]

Vec3::Vec3	(	float	inX,
		float	inY,
		float	inZ
	)

Create a vector from 3 components.

Member Function Documentation

Abs()

Vec3 Vec3::Abs

(

)

const

Return the absolute value of each of the components.

CheckW()

JPH_INLINE void Vec3::CheckW

(

)

const

Internal helper function that checks that W is equal to Z, so e.g. dividing by it should not generate div by 0.

Cross()

Vec3 Vec3::Cross

(

Vec3Arg

inV2

)

const

Cross product.

Dot()

float Vec3::Dot

(

Vec3Arg

inV2

)

const

Dot product.

DotV()

Vec3 Vec3::DotV

(

Vec3Arg

inV2

)

const

Dot product, returns the dot product in X, Y and Z components.

DotV4()

Vec4 Vec3::DotV4

(

Vec3Arg

inV2

)

const

Dot product, returns the dot product in X, Y, Z and W components.

GetHighestComponentIndex()

int Vec3::GetHighestComponentIndex

(

)

const

Get index of component with highest value.

GetLowestComponentIndex()

int Vec3::GetLowestComponentIndex

(

)

const

Get index of component with lowest value.

GetNormalizedPerpendicular()

Vec3 Vec3::GetNormalizedPerpendicular

(

)

const

Get normalized vector that is perpendicular to this vector.

GetSign()

Vec3 Vec3::GetSign

(

)

const

Get vector that contains the sign of each element (returns 1.0f if positive, -1.0f if negative)

GetX()

JPH_INLINE float Vec3::GetX ( ) const

inline

Get individual components.

GetY()

JPH_INLINE float Vec3::GetY ( ) const

inline

GetZ()

JPH_INLINE float Vec3::GetZ ( ) const

inline

IsClose()

bool Vec3::IsClose	(	Vec3Arg	inV2,
		float	inMaxDistSq = 1.0e-12f
	)		const

Test if two vectors are close.

IsNaN()

bool Vec3::IsNaN

(

)

const

Test if vector contains NaN elements.

IsNearZero()

bool Vec3::IsNearZero

(

float

inMaxDistSq = 1.0e-12f

)

const

Test if vector is near zero.

IsNormalized()

bool Vec3::IsNormalized

(

float

inTolerance = 1.0e-6f

)

const

Test if vector is normalized.

Length()

float Vec3::Length

(

)

const

Length of vector.

LengthSq()

float Vec3::LengthSq

(

)

const

Squared length of vector.

Normalized()

Vec3 Vec3::Normalized

(

)

const

Normalize vector.

NormalizedOr()

Vec3 Vec3::NormalizedOr

(

Vec3Arg

inZeroValue

)

const

Normalize vector or return inZeroValue if the length of the vector is zero.

operator!=()

JPH_INLINE bool Vec3::operator!= ( Vec3Arg  inV2 ) const

inline

operator*() [1/2]

Vec3 Vec3::operator*

(

float

inV2

)

const

Multiply vector with float.

operator*() [2/2]

Vec3 Vec3::operator*

(

Vec3Arg

inV2

)

const

Multiply two float vectors (component wise)

operator*=() [1/2]

Vec3 & Vec3::operator*=

(

float

inV2

)

Multiply vector with float.

operator*=() [2/2]

Vec3 & Vec3::operator*=

(

Vec3Arg

inV2

)

Multiply vector with vector.

operator+()

Vec3 Vec3::operator+

(

Vec3Arg

inV2

)

const

Add two float vectors (component wise)

operator+=()

Vec3 & Vec3::operator+=

(

Vec3Arg

inV2

)

Add two float vectors (component wise)

operator-() [1/2]

Vec3 Vec3::operator-

(

)

const

Negate.

operator-() [2/2]

Vec3 Vec3::operator-

(

Vec3Arg

inV2

)

const

Subtract two float vectors (component wise)

operator-=()

Vec3 & Vec3::operator-=

(

Vec3Arg

inV2

)

Add two float vectors (component wise)

operator/() [1/2]

Vec3 Vec3::operator/

(

float

inV2

)

const

Divide vector by float.

operator/() [2/2]

Vec3 Vec3::operator/

(

Vec3Arg

inV2

)

const

Divide (component wise)

operator/=()

Vec3 & Vec3::operator/=

(

float

inV2

)

Divide vector by float.

operator=()

Vec3 & Vec3::operator= ( const Vec3 &  inRHS )

default

operator==()

bool Vec3::operator==

(

Vec3Arg

inV2

)

const

Comparison.

operator[]()

JPH_INLINE float Vec3::operator[] ( uint  inCoordinate ) const

inline

Get float component by index.

Reciprocal()

Vec3 Vec3::Reciprocal

(

)

const

Reciprocal vector (1 / value) for each of the components.

ReduceMax()

float Vec3::ReduceMax

(

)

const

Get the maximum of X, Y and Z.

ReduceMin()

float Vec3::ReduceMin

(

)

const

Get the minimum of X, Y and Z.

ReinterpretAsInt()

UVec4 Vec3::ReinterpretAsInt

(

)

const

Reinterpret Vec3 as a UVec4 (doesn't change the bits)

sAnd()

Vec3 Vec3::sAnd ( Vec3Arg  inV1, Vec3Arg  inV2  )

static

Logical and (component wise)

sAxisX()

static JPH_INLINE Vec3 Vec3::sAxisX ( )

inlinestatic

Vectors with the principal axis.

sAxisY()

static JPH_INLINE Vec3 Vec3::sAxisY ( )

inlinestatic

sAxisZ()

static JPH_INLINE Vec3 Vec3::sAxisZ ( )

inlinestatic

sClamp()

Vec3 Vec3::sClamp ( Vec3Arg  inV, Vec3Arg  inMin, Vec3Arg  inMax  )

static

Clamp a vector between min and max (component wise)

sEquals()

UVec4 Vec3::sEquals ( Vec3Arg  inV1, Vec3Arg  inV2  )

static

Equals (component wise)

Set()

JPH_INLINE void Vec3::Set ( float  inX, float  inY, float  inZ  )

inline

Set all components.

SetComponent()

JPH_INLINE void Vec3::SetComponent ( uint  inCoordinate, float  inValue  )

inline

Set float component by index.

SetX()

JPH_INLINE void Vec3::SetX ( float  inX )

inline

Set individual components.

SetY()

JPH_INLINE void Vec3::SetY ( float  inY )

inline

SetZ()

JPH_INLINE void Vec3::SetZ ( float  inZ )

inline

sFixW()

static JPH_INLINE Type Vec3::sFixW ( Type  inValue )

static

Internal helper function that ensures that the Z component is replicated to the W component to prevent divisions by zero.

sFusedMultiplyAdd()

Vec3 Vec3::sFusedMultiplyAdd ( Vec3Arg  inMul1, Vec3Arg  inMul2, Vec3Arg  inAdd  )

static

Calculates inMul1 * inMul2 + inAdd.

sGreater()

UVec4 Vec3::sGreater ( Vec3Arg  inV1, Vec3Arg  inV2  )

static

Greater than (component wise)

sGreaterOrEqual()

UVec4 Vec3::sGreaterOrEqual ( Vec3Arg  inV1, Vec3Arg  inV2  )

static

Greater than or equal (component wise)

sLess()

UVec4 Vec3::sLess ( Vec3Arg  inV1, Vec3Arg  inV2  )

static

Less than (component wise)

sLessOrEqual()

UVec4 Vec3::sLessOrEqual ( Vec3Arg  inV1, Vec3Arg  inV2  )

static

Less than or equal (component wise)

sLoadFloat3Unsafe()

Vec3 Vec3::sLoadFloat3Unsafe ( const Float3 &  inV )

static

Load 3 floats from memory (reads 32 bits extra which it doesn't use)

sMax()

Vec3 Vec3::sMax ( Vec3Arg  inV1, Vec3Arg  inV2  )

static

Return the maximum of each of the components.

sMin()

Vec3 Vec3::sMin ( Vec3Arg  inV1, Vec3Arg  inV2  )

static

Return the minimum value of each of the components.

sNaN()

Vec3 Vec3::sNaN ( )

static

Vector with all NaN's.

sOr()

Vec3 Vec3::sOr ( Vec3Arg  inV1, Vec3Arg  inV2  )

static

Logical or (component wise)

SplatX()

Vec4 Vec3::SplatX

(

)

const

Replicate the X component to all components.

SplatY()

Vec4 Vec3::SplatY

(

)

const

Replicate the Y component to all components.

SplatZ()

Vec4 Vec3::SplatZ

(

)

const

Replicate the Z component to all components.

Sqrt()

Vec3 Vec3::Sqrt

(

)

const

Component wise square root.

sRandom()

template<class Random >

Vec3 Vec3::sRandom ( Random &  inRandom )

inlinestatic

Get random unit vector.

sReplicate()

Vec3 Vec3::sReplicate ( float  inV )

static

Replicate inV across all components.

sSelect()

Vec3 Vec3::sSelect ( Vec3Arg  inV1, Vec3Arg  inV2, UVec4Arg  inControl  )

static

Component wise select, returns inV1 when highest bit of inControl = 0 and inV2 when highest bit of inControl = 1.

StoreFloat3()

void Vec3::StoreFloat3

(

Float3 *

outV

)

const

Store 3 floats to memory.

sUnitSpherical()

Vec3 Vec3::sUnitSpherical ( float  inTheta, float  inPhi  )

static

Get unit vector given spherical coordinates inTheta \(\in [0, \pi]\) is angle between vector and z-axis inPhi \(\in [0, 2 \pi]\) is the angle in the xy-plane starting from the x axis and rotating counter clockwise around the z-axis

Swizzle() [1/2]

template<uint32 SwizzleX, uint32 SwizzleY, uint32 SwizzleZ>

JPH_INLINE Vec3 Vec3::Swizzle

(

)

const

Swizzle the elements in inV.

Swizzle() [2/2]

template<uint32 SwizzleX, uint32 SwizzleY, uint32 SwizzleZ>

Vec3 Vec3::Swizzle

(

)

const

sXor()

Vec3 Vec3::sXor ( Vec3Arg  inV1, Vec3Arg  inV2  )

static

Logical xor (component wise)

sZero()

Vec3 Vec3::sZero ( )

static

Vector with all zeros.

ToInt()

UVec4 Vec3::ToInt

(

)

const

Convert each component from a float to an int.

Friends And Related Symbol Documentation

operator*

JPH_INLINE Vec3 operator* ( float  inV1, Vec3Arg  inV2  )

friend

Multiply vector with float.

operator<<

ostream & operator<< ( ostream &  inStream, Vec3Arg  inV  )

friend

To String.

Member Data Documentation

[union]

union { ... } Vec3

mF32

float Vec3::mF32[4]

mValue

Type Vec3::mValue

sUnitSphere

const StaticArray< Vec3, 1026 > Vec3::sUnitSphere

static

Initial value:

= []() {
 
    const int level = 3;
 
    StaticArray<Vec3, 1026> verts;
 
    
    verts.push_back(Vec3::sAxisX());
    verts.push_back(-Vec3::sAxisX());
    verts.push_back(Vec3::sAxisY());
    verts.push_back(-Vec3::sAxisY());
    verts.push_back(Vec3::sAxisZ());
    verts.push_back(-Vec3::sAxisZ());
 
    
    sCreateVertices(verts, Vec3::sAxisX(), Vec3::sAxisY(), Vec3::sAxisZ(), level);
    sCreateVertices(verts, -Vec3::sAxisX(), Vec3::sAxisY(), Vec3::sAxisZ(), level);
    sCreateVertices(verts, Vec3::sAxisX(), -Vec3::sAxisY(), Vec3::sAxisZ(), level);
    sCreateVertices(verts, -Vec3::sAxisX(), -Vec3::sAxisY(), Vec3::sAxisZ(), level);
    sCreateVertices(verts, Vec3::sAxisX(), Vec3::sAxisY(), -Vec3::sAxisZ(), level);
    sCreateVertices(verts, -Vec3::sAxisX(), Vec3::sAxisY(), -Vec3::sAxisZ(), level);
    sCreateVertices(verts, Vec3::sAxisX(), -Vec3::sAxisY(), -Vec3::sAxisZ(), level);
    sCreateVertices(verts, -Vec3::sAxisX(), -Vec3::sAxisY(), -Vec3::sAxisZ(), level);
 
    return verts;
}()

A set of vectors uniformly spanning the surface of a unit sphere, usable for debug purposes.

---

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

• Jolt/Math/Vec3.h
• Jolt/Math/Vec3.cpp
• Jolt/Math/Vec3.inl