# LVector3f

from pandac.PandaModules import LVector3f

Filename: lvector3_src.h Created by: drose (24Sep99)
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Class : LVector3
Description : This is a three-component vector distance (as opposed to a three-component point, which represents a particular point in space). Some of the methods are slightly different between LPoint3 and LVector3; in particular, subtraction of two points yields a vector, while addition of a vector and a point yields a point.

## Inheritance:

LVector3f: LVecBase3f
LVecBase3f:

## Methods of LVector3f:

angleDeg
angleRad
back
cross
down
forward
getClassType
left
operator *
operator +
operator -
operator -
operator /
operator =
pythonRepr
rfu
right
unitX
unitY
unitZ
up
zero

## Methods of LVecBase3f:

addHash
addToCell
addX
addY
addZ
almostEqual
compareTo
cross
crossInto
dot
fill
fmax
fmin
getCell
getClassType
getData
getHash
getNumComponents
getStandardizedHpr
getX
getY
getZ
isNan
length
lengthSquared
normalize
operator !=
operator *
operator *=
operator +
operator +=
operator -
operator -
operator -=
operator /
operator /=
operator <
operator =
operator ==
operator []
operator delete
operator new
output
pythonRepr
set
setCell
setX
setY
setZ
unitX
unitY
unitZ
zero

angleDeg float LVector3f::angle_deg(LVector3f const &other) const; Description: Returns the angle between this vector and the other one, expressed in degrees. Both vectors should be initially normalized.

angleRad float LVector3f::angle_rad(LVector3f const &other) const; Description: Returns the angle between this vector and the other one, expressed in radians. Both vectors should be initially normalized.

back static LVector3f LVector3f::back(CoordinateSystem cs = (CS_default)); Description: Returns the back vector for the given coordinate system.

cross LVector3f LVector3f::cross(LVecBase3f const &other) const; Description:

down static LVector3f LVector3f::down(CoordinateSystem cs = (CS_default)); Description: Returns the down vector for the given coordinate system.

forward static LVector3f LVector3f::forward(CoordinateSystem cs = (CS_default)); Description: Returns the forward vector for the given coordinate system.

getClassType static TypeHandle LVector3f::get_class_type(void); Undocumented function.

left static LVector3f LVector3f::left(CoordinateSystem cs = (CS_default)); Description: Returns the left vector for the given coordinate system.

operator * LVector3f LVector3f::operator *(float scalar) const; Description:

operator + LVecBase3f LVector3f::operator +(LVecBase3f const &other) const; Description:

operator - LVecBase3f LVector3f::operator -(LVecBase3f const &other) const; Description:

operator - LVecBase3f LVector3f::operator -(LVecBase3f const &other) const; Description:

operator / LVector3f LVector3f::operator /(float scalar) const; Description:

operator = LVector3f &LVector3f::operator =(LVecBase3f const &copy); Description:

pythonRepr void LVector3f::python_repr(ostream &out, string const &class_name) const; Description:

rfu static LVector3f LVector3f::rfu(float right, float fwd, float up, CoordinateSystem cs = (CS_default)); INLINE_LINMATH static FLOATNAME(LVector3) & rfu(FLOATTYPE right, Description: Returns a vector that is described by its right, forward, and up components, in whatever way the coordinate system represents that vector. INLINE_LINMATH FLOATNAME(LVector3) & FLOATNAME(LVector3)::

right static LVector3f LVector3f::right(CoordinateSystem cs = (CS_default)); Description: Returns the right vector for the given coordinate system.

unitX static LVector3f const &LVector3f::unit_x(void); Description: Returns a unit X vector.

unitY static LVector3f const &LVector3f::unit_y(void); Description: Returns a unit Y vector.

unitZ static LVector3f const &LVector3f::unit_z(void); Description: Returns a unit Z vector.

up static LVector3f LVector3f::up(CoordinateSystem cs = (CS_default)); Some special named constructors for LVector3. Description: Returns the up vector for the given coordinate system.

zero static LVector3f const &LVector3f::zero(void); Description: Returns a zero-length vector.

addHash unsigned int LVecBase3f::add_hash(unsigned int hash) const; Description: Adds the vector into the running hash.

addToCell void LVecBase3f::add_to_cell(int i, float value); These next functions add to an existing value. i.e. foo.set_x(foo.get_x() + value) These are useful to reduce overhead in scripting languages: Description:

addX void LVecBase3f::add_x(float value); These next functions add to an existing value. i.e. foo.set_x(foo.get_x() + value) These are useful to reduce overhead in scripting languages: Description:

addY void LVecBase3f::add_y(float value); Description:

addZ void LVecBase3f::add_z(float value); Description:

almostEqual bool LVecBase3f::almost_equal(LVecBase3f const &other, float threshold) const; Description: Returns true if two vectors are memberwise equal within a specified tolerance. Description: Returns true if two vectors are memberwise equal within a default tolerance based on the numeric type.

compareTo int LVecBase3f::compare_to(LVecBase3f const &other) const; Description: This flavor of compare_to uses a default threshold value based on the numeric type. Description: Sorts vectors lexicographically, componentwise. Returns a number less than 0 if this vector sorts before the other one, greater than zero if it sorts after, 0 if they are equivalent (within the indicated tolerance).

cross LVecBase3f LVecBase3f::cross(LVecBase3f const &other) const; Description:

crossInto void LVecBase3f::cross_into(LVecBase3f const &other); Description:

dot float LVecBase3f::dot(LVecBase3f const &other) const; Description:

fill void LVecBase3f::fill(float fill_value); Description: Sets each element of the vector to the indicated fill_value. This is particularly useful for initializing to zero.

fmax LVecBase3f LVecBase3f::fmax(LVecBase3f const &other); Description:

fmin LVecBase3f LVecBase3f::fmin(LVecBase3f const &other); Description:

getCell float LVecBase3f::get_cell(int i) const; Description:

getClassType static TypeHandle LVecBase3f::get_class_type(void); Undocumented function.

getData float const *LVecBase3f::get_data(void) const; Description: Returns the address of the first of the three data elements in the vector. The remaining elements occupy the next positions consecutively in memory.

getHash unsigned int LVecBase3f::get_hash(void) const; Description: Returns a suitable hash for phash_map.

getNumComponents int LVecBase3f::get_num_components(void) const; Description: Returns the number of elements in the vector, three.

getStandardizedHpr LVecBase3f LVecBase3f::get_standardized_hpr(void) const; Description: Try to un-spin the hpr to a standard form. Like all standards, someone decides between many arbitrary posible standards. This function assumes that 0 and 360 are the same, as is 720 and -360. Also 180 and -180 are the same. Another example is -90 and 270. Each element will be in the range -180.0 to 179.99999. The original usage of this function is for human readable output. It doesn't work so well for asserting that foo_hpr is roughly equal to bar_hpr. Try using LQuaternionf::is_same_direction() for that. See Also: get_standardized_rotation, LQuaternion::is_same_direction

getX float LVecBase3f::get_x(void) const; Description:

getY float LVecBase3f::get_y(void) const; Description:

getZ float LVecBase3f::get_z(void) const; Description:

isNan bool LVecBase3f::is_nan(void) const; Description: Returns true if any component of the vector is not-a-number, false otherwise.

length float LVecBase3f::length(void) const; Description: Returns the length of the vector, by the Pythagorean theorem.

lengthSquared float LVecBase3f::length_squared(void) const; Description: Returns the square of the vector's length, cheap and easy.

normalize bool LVecBase3f::normalize(void); Description: Normalizes the vector in place. Returns true if the vector was normalized, false if it was a zero-length vector.

operator != bool LVecBase3f::operator !=(LVecBase3f const &other) const; Description:

operator * LVecBase3f LVecBase3f::operator *(float scalar) const; Description:

operator *= void LVecBase3f::operator *=(float scalar); Description:

operator + LVecBase3f LVecBase3f::operator +(LVecBase3f const &other) const; Description:

operator += void LVecBase3f::operator +=(LVecBase3f const &other); Description:

operator - LVecBase3f LVecBase3f::operator -(LVecBase3f const &other) const; Description:

operator - LVecBase3f LVecBase3f::operator -(LVecBase3f const &other) const; Description:

operator -= void LVecBase3f::operator -=(LVecBase3f const &other); Description:

operator / LVecBase3f LVecBase3f::operator /(float scalar) const; Description:

operator /= void LVecBase3f::operator /=(float scalar); Description:

operator < bool LVecBase3f::operator <(LVecBase3f const &other) const; Description: This performs a lexicographical comparison. It's of questionable mathematical meaning, but sometimes has a practical purpose for sorting unique vectors, especially in an STL container. Also see compare_to().

operator = LVecBase3f &LVecBase3f::operator =(LVecBase3f const &copy); Description:

operator == bool LVecBase3f::operator ==(LVecBase3f const &other) const; Description:

operator [] float LVecBase3f::operator [](int i) const; Description:

operator delete void LVecBase3f::operator delete(void *ptr); Undocumented function.

operator new void *LVecBase3f::operator new(unsigned int size); Undocumented function.

output void LVecBase3f::output(ostream &out) const; Description:

pythonRepr void LVecBase3f::python_repr(ostream &out, string const &class_name) const; Description:

set void LVecBase3f::set(float x, float y, float z); Description:

setCell void LVecBase3f::set_cell(int i, float value); Description:

setX void LVecBase3f::set_x(float value); Description:

setY void LVecBase3f::set_y(float value); Description:

setZ void LVecBase3f::set_z(float value); Description:

unitX static LVecBase3f const &LVecBase3f::unit_x(void); Description: Returns a unit X vector.

unitY static LVecBase3f const &LVecBase3f::unit_y(void); Description: Returns a unit Y vector.

unitZ static LVecBase3f const &LVecBase3f::unit_z(void); Description: Returns a unit Z vector.

zero static LVecBase3f const &LVecBase3f::zero(void); Description: Returns a zero-length vector.