Public Member Functions
	vector3 (const Ogre::Vector3 &vec)

	operator Ogre::Vector3 () const

	vector3 (const real fX, const real fY, const real fZ)

	vector3 (const real &scaler)

	vector3 (const vector3int32 &cast)

bool	operator<= (const vector3 &rhs) const

bool	operator>= (const vector3 &rhs) const

vector3	getFloor (void) const

vector3	getAbs (void) const

void	swap (vector3 &other)

real	operator[] (const size_t i) const

real &	operator[] (const size_t i)

real *	ptr ()
	Pointer accessor for direct copying.

const real *	ptr () const
	Pointer accessor for direct copying.

vector3 &	operator= (const real fScaler)

bool	operator== (const vector3 &rkVector) const

bool	operator!= (const vector3 &rkVector) const

vector3	operator+ (const vector3 &rkVector) const

vector3	operator- (const vector3 &rkVector) const

vector3	operator* (const real fScalar) const

vector3	operator* (const vector3 &rhs) const

vector3	operator/ (const real fScalar) const

vector3	operator/ (const vector3 &rhs) const

const vector3 &	operator+ () const

vector3	operator- () const

vector3 &	operator+= (const vector3 &rkVector)

vector3 &	operator+= (const real fScalar)

vector3 &	operator-= (const vector3 &rkVector)

vector3 &	operator-= (const real fScalar)

vector3 &	*operator=** (const real fScalar)

vector3 &	*operator=** (const vector3 &rkVector)

vector3 &	operator/= (const real fScalar)

vector3 &	operator/= (const vector3 &rkVector)

real	length () const

real	squaredLength () const

real	distance (const vector3 &rhs) const

real	squaredDistance (const vector3 &rhs) const

real	dotProduct (const vector3 &vec) const

real	absDotProduct (const vector3 &vec) const

real	normalise ()

vector3	crossProduct (const vector3 &rkVector) const

vector3	midPoint (const vector3 &vec) const

bool	operator< (const vector3 &rhs) const

bool	operator> (const vector3 &rhs) const

void	makeFloor (const vector3 &cmp)

void	makeCeil (const vector3 &cmp)

vector3	perpendicular (void) const

real	angleBetween (const vector3 &dest) const

quaternion	getRotationTo (const vector3 &dest, const vector3 &fallbackAxis=vector3::ZERO) const

bool	isZeroLength (void) const

vector3	getNormalise () const

vector3	normalisedCopy (void) const

vector3	reflect (const vector3 &normal) const

bool	positionCloses (const vector3 &rhs, real tolerance=1e-03f) const

vector3	primaryAxis () const
	Extract the primary (dominant) axis from this direction vector.

Public Attributes
real	x

real	y

real	z

Static Public Attributes
static const vector3	ZERO = vector3(0.)

static const vector3	UNIT_X = vector3(1., 0., 0.)

static const vector3	UNIT_Y = vector3(0., 1., 0.)

static const vector3	UNIT_Z = vector3(0., 0., 1.)

static const vector3	NEGATIVE_UNIT_X = vector3(-1., 0., 0.)

static const vector3	NEGATIVE_UNIT_Y = vector3(0., -1., 0.)

static const vector3	NEGATIVE_UNIT_Z = vector3(0., 0., -1.)

static const vector3	UNIT_SCALE = vector3(1., 1., 1.)

Friends
vector3	operator* (const real fScalar, const vector3 &rkVector)

vector3	operator/ (const real fScalar, const vector3 &rkVector)

vector3	operator+ (const vector3 &lhs, const real rhs)

vector3	operator+ (const real lhs, const vector3 &rhs)

vector3	operator- (const vector3 &lhs, const real rhs)

vector3	operator- (const real lhs, const vector3 &rhs)

Detailed Description

Examples:: customVertexInformation.cpp, mesh.cpp, noise.cpp, and primitives.cpp.

Member Function Documentation

real blub::vector3::absDotProduct ( const vector3 & vec ) const

inline

Calculates the absolute dot (scalar) product of this vector with another.

Remarks: This function work similar dotProduct, except it use absolute value of each component of the vector to computing.

Parameters

vec	Vector with which to calculate the absolute dot product (together with this one).

Returns: A real representing the absolute dot product value.

real blub::vector3::angleBetween ( const vector3 & dest ) const

inline

Gets the angle between 2 vectors.

Remarks: Vectors do not have to be unit-length but must represent directions.

vector3 blub::vector3::crossProduct ( const vector3 & rkVector ) const

inline

Calculates the cross-product of 2 vectors, i.e. the vector that lies perpendicular to them both.

Remarks: The cross-product is normally used to calculate the normal vector of a plane, by calculating the cross-product of 2 non-equivalent vectors which lie on the plane (e.g. 2 edges of a triangle).

Parameters

rkVector Vector which, together with this one, will be used to calculate the cross-product.

Returns

A vector which is the result of the cross-product. This vector will NOT be normalised, to maximise efficiency

call vector3::normalise on the result if you wish this to be done. As for which side the resultant vector will be on, the returned vector will be on the side from which the arc from 'this' to rkVector is anticlockwise, e.g. UNIT_Y.crossProduct(UNIT_Z) = UNIT_X, whilst UNIT_Z.crossProduct(UNIT_Y) = -UNIT_X. This is because OGRE uses a right-handed coordinate system.

: For a clearer explanation, look a the left and the bottom edges of your monitor's screen. Assume that the first vector is the left edge and the second vector is the bottom edge, both of them starting from the lower-left corner of the screen. The resulting vector is going to be perpendicular to both of them and will go inside the screen, towards the cathode tube (assuming you're using a CRT monitor, of course).

real blub::vector3::distance ( const vector3 & rhs ) const

inline

Returns the distance to another vector.

Warning: This operation requires a square root and is expensive in terms of CPU operations. If you don't need to know the exact distance (e.g. for just comparing distances) use squaredDistance() instead.

real blub::vector3::dotProduct ( const vector3 & vec ) const

inline

Calculates the dot (scalar) product of this vector with another.

Remarks: The dot product can be used to calculate the angle between 2 vectors. If both are unit vectors, the dot product is the cosine of the angle; otherwise the dot product must be divided by the product of the lengths of both vectors to get the cosine of the angle. This result can further be used to calculate the distance of a point from a plane.

Parameters

vec	Vector with which to calculate the dot product (together with this one).

Returns: A float representing the dot product value.

vector3 blub::vector3::getNormalise ( ) const

inline

As normalise, except that this vector is unaffected and the normalised vector is returned as a copy.

quaternion vector3::getRotationTo	(	const vector3 &	dest,
		const vector3 &	fallbackAxis = `vector3::ZERO`
	)		const

Gets the shortest arc quaternion to rotate this vector to the destination vector.

Remarks: If you call this with a dest vector that is close to the inverse of this vector, we will rotate 180 degrees around the 'fallbackAxis' (if specified, or a generated axis if not) since in this case ANY axis of rotation is valid.

bool blub::vector3::isZeroLength ( void ) const

inline

Returns true if this vector is zero length.

real blub::vector3::length ( ) const

inline

Returns the length (magnitude) of the vector.

Warning: This operation requires a square root and is expensive in terms of CPU operations. If you don't need to know the exact length (e.g. for just comparing lengths) use squaredLength() instead.

void blub::vector3::makeCeil ( const vector3 & cmp )

inline

Sets this vector's components to the maximum of its own and the ones of the passed in vector.

Remarks: 'Maximum' in this case means the combination of the highest value of x, y and z from both vectors. Highest is taken just numerically, not magnitude, so 1 > -3.

void blub::vector3::makeFloor ( const vector3 & cmp )

inline

Sets this vector's components to the minimum of its own and the ones of the passed in vector.

Remarks: 'Minimum' in this case means the combination of the lowest value of x, y and z from both vectors. Lowest is taken just numerically, not magnitude, so -1 < 0.

vector3 blub::vector3::midPoint ( const vector3 & vec ) const

inline

Returns a vector at a point half way between this and the passed in vector.

real blub::vector3::normalise ( )

inline

Normalises the vector.

Remarks: This method normalises the vector such that it's length / magnitude is 1. The result is called a unit vector.

Note: This function will not crash for zero-sized vectors, but there will be no changes made to their components.

Returns: The previous length of the vector.

vector3 blub::vector3::normalisedCopy ( void ) const

inline

As normalise, except that this vector is unaffected and the normalised vector is returned as a copy.

bool blub::vector3::operator< ( const vector3 & rhs ) const

inline

Returns true if the vector's scalar components are all greater that the ones of the vector it is compared against.

vector3& blub::vector3::operator= ( const real fScaler )

inline

Assigns the value of the other vector.

Parameters

rkVector The other vector depricated! inline vector3& operator = ( const vector3& rkVector ) { x = rkVector.x; y = rkVector.y; z = rkVector.z;

return *this; }

bool blub::vector3::operator> ( const vector3 & rhs ) const

inline

Returns true if the vector's scalar components are all smaller that the ones of the vector it is compared against.

vector3 blub::vector3::perpendicular ( void ) const

inline

Generates a vector perpendicular to this vector (eg an 'up' vector).

Remarks: This method will return a vector which is perpendicular to this vector. There are an infinite number of possibilities but this method will guarantee to generate one of them. If you need more control you should use the quaternion class.

bool blub::vector3::positionCloses	(	const vector3 &	rhs,
		real	tolerance = `1e-03f`
	)		const

inline

Returns whether this vector is within a positional tolerance of another vector, also take scale of the vectors into account.

Parameters

rhs	The vector to compare with
tolerance	The amount (related to the scale of vectors) that distance of the vector may vary by and still be considered close

vector3 blub::vector3::reflect ( const vector3 & normal ) const

inline

Calculates a reflection vector to the plane with the given normal .

Remarks: NB assumes 'this' is pointing AWAY FROM the plane, invert if it is not.

real blub::vector3::squaredDistance ( const vector3 & rhs ) const

inline

Returns the square of the distance to another vector.

Remarks: This method is for efficiency - calculating the actual distance to another vector requires a square root, which is expensive in terms of the operations required. This method returns the square of the distance to another vector, i.e. the same as the distance but before the square root is taken. Use this if you want to find the longest / shortest distance without incurring the square root.

real blub::vector3::squaredLength ( ) const

inline

Returns the square of the length(magnitude) of the vector.

Remarks: This method is for efficiency - calculating the actual length of a vector requires a square root, which is expensive in terms of the operations required. This method returns the square of the length of the vector, i.e. the same as the length but before the square root is taken. Use this if you want to find the longest / shortest vector without incurring the square root.

void blub::vector3::swap ( vector3 & other )

inline

Exchange the contents of this vector with another.

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

/home/mlanner/Development/cpp/projects/voxelTerrain/voxelTerrain/modules/math/source/blub/math/vector3.hpp
/home/mlanner/Development/cpp/projects/voxelTerrain/voxelTerrain/modules/math/source/blub/math/vector3.cpp

Public Member Functions

Public Attributes

Static Public Attributes

Friends

Detailed Description

Member Function Documentation