Panda3D
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This is a unit quaternion representing an orientation. More...
#include "lorientation.h"
Public Types | |
typedef const float * | const_iterator |
typedef const float * | iterator |
Public Member Functions | |
LOrientationf (const LQuaternionf &) | |
LOrientationf (const LVector3f &, float) | |
vector + twist | |
LOrientationf (const LMatrix3f &) | |
matrix3 | |
LOrientationf (float, float, float, float) | |
LOrientationf (const LMatrix4f &) | |
matrix4 | |
size_t | add_hash (size_t hash) const |
Adds the vector into the running hash. | |
size_t | add_hash (size_t hash, float threshold) const |
Adds the vector into the running hash. | |
void | add_to_cell (int i, float value) |
void | add_w (float value) |
void | add_x (float value) |
void | add_y (float value) |
void | add_z (float value) |
bool | almost_equal (const LQuaternionf &other) const |
Returns true if two quaternions are memberwise equal within a default tolerance based on the numeric type. | |
bool | almost_equal (const LQuaternionf &other, float threshold) const |
Returns true if two quaternions are memberwise equal within a specified tolerance. | |
bool | almost_equal (const LVecBase4f &other, float threshold) const |
Returns true if two vectors are memberwise equal within a specified tolerance. | |
bool | almost_equal (const LVecBase4f &other) const |
Returns true if two vectors are memberwise equal within a default tolerance based on the numeric type. | |
bool | almost_same_direction (const LQuaternionf &other, float threshold) const |
Returns true if two quaternions represent the same rotation within a specified tolerance. | |
float | angle_deg (const LQuaternionf &other) const |
Returns the angle between the orientation represented by this quaternion and the other one, expressed in degrees. | |
float | angle_rad (const LQuaternionf &other) const |
Returns the angle between the orientation represented by this quaternion and the other one, expressed in radians. | |
iterator | begin () |
Returns an iterator that may be used to traverse the elements of the matrix, STL-style. | |
const_iterator | begin () const |
Returns an iterator that may be used to traverse the elements of the matrix, STL-style. | |
int | compare_to (const LVecBase4f &other, float threshold) const |
Sorts vectors lexicographically, componentwise. | |
int | compare_to (const LVecBase4f &other) const |
This flavor of compare_to uses a default threshold value based on the numeric type. | |
LQuaternionf | conjugate () const |
Returns the complex conjugate of this quat. | |
bool | conjugate_from (const LQuaternionf &other) |
Computes the conjugate of the other quat, and stores the result in this quat. | |
bool | conjugate_in_place () |
Sets this to be the conjugate of the current quat. | |
float | dot (const LVecBase4f &other) const |
iterator | end () |
Returns an iterator that may be used to traverse the elements of the matrix, STL-style. | |
const_iterator | end () const |
Returns an iterator that may be used to traverse the elements of the matrix, STL-style. | |
void | extract_to_matrix (LMatrix3f &m) const |
Based on the quat lib from VRPN. | |
void | extract_to_matrix (LMatrix4f &m) const |
Based on the quat lib from VRPN. | |
void | fill (float fill_value) |
Sets each element of the vector to the indicated fill_value. | |
LVecBase4f | fmax (const LVecBase4f &other) |
LVecBase4f | fmin (const LVecBase4f &other) |
void | generate_hash (ChecksumHashGenerator &hashgen) const |
Adds the vector to the indicated hash generator. | |
void | generate_hash (ChecksumHashGenerator &hashgen, float threshold) const |
Adds the vector to the indicated hash generator. | |
float | get_angle () const |
This, along with get_axis(), returns the rotation represented by the quaternion as an angle about an arbitrary axis. | |
float | get_angle_rad () const |
This, along with get_axis(), returns the rotation represented by the quaternion as an angle about an arbitrary axis. | |
LVector3f | get_axis () const |
This, along with get_angle(), returns the rotation represented by the quaternion as an angle about an arbitrary axis. | |
LVector3f | get_axis_normalized () const |
This, along with get_angle(), returns the rotation represented by the quaternion as an angle about an arbitrary axis. | |
float | get_cell (int i) const |
const float * | get_data () const |
Returns the address of the first of the four data elements in the vector. | |
LVector3f | get_forward (CoordinateSystem cs=CS_default) const |
Returns the orientation represented by this quaternion, expressed as a forward vector. | |
size_t | get_hash () const |
Returns a suitable hash for phash_map. | |
size_t | get_hash (float threshold) const |
Returns a suitable hash for phash_map. | |
LVecBase3f | get_hpr (CoordinateSystem cs=CS_default) const |
Extracts the equivalent Euler angles from the unit quaternion. | |
float | get_i () const |
float | get_j () const |
float | get_k () const |
int | get_num_components () const |
Returns the number of elements in the vector, four. | |
float | get_r () const |
LVector3f | get_right (CoordinateSystem cs=CS_default) const |
Returns the orientation represented by this quaternion, expressed as a right vector. | |
LVector3f | get_up (CoordinateSystem cs=CS_default) const |
Returns the orientation represented by this quaternion, expressed as an up vector. | |
float | get_w () const |
float | get_x () const |
float | get_y () const |
float | get_z () const |
bool | invert_from (const LQuaternionf &other) |
Computes the inverse of the other quat, and stores the result in this quat. | |
bool | invert_in_place () |
Inverts the current quat. | |
bool | is_almost_identity (float tolerance) const |
Returns true if this quaternion represents the identity transformation within a given tolerance. | |
bool | is_identity () const |
Returns true if this quaternion represents the identity transformation: no rotation. | |
bool | is_nan () const |
Returns true if any component of the vector is not-a-number, false otherwise. | |
bool | is_same_direction (const LQuaternionf &other) const |
Returns true if two quaternions represent the same rotation within a default tolerance based on the numeric type. | |
float | length () const |
Returns the length of the vector, by the Pythagorean theorem. | |
float | length_squared () const |
Returns the square of the vector's length, cheap and easy. | |
LQuaternionf | multiply (const LQuaternionf &rhs) const |
actual multiply call (non virtual) | |
bool | normalize () |
Normalizes the vector in place. | |
bool | operator!= (const LVecBase4f &other) const |
LOrientationf | operator* (const LQuaternionf &other) const |
Orientation * Orientation This is a meaningless operation, and will always simply return the rhs. | |
LOrientationf | operator* (const LRotationf &other) const |
Orientation * rotation = Orientation Applies a rotation to an orientation. | |
LMatrix3f | operator* (const LMatrix3f &) |
Quat * Matrix = matrix. | |
LMatrix4f | operator* (const LMatrix4f &) |
Quat * Matrix = matrix. | |
LQuaternionf | operator* (float scalar) const |
void | operator*= (float scalar) |
LQuaternionf & | operator*= (const LQuaternionf &) |
LVecBase4f | operator+ (const LVecBase4f &other) const |
LQuaternionf | operator+ (const LQuaternionf &other) const |
void | operator+= (const LVecBase4f &other) |
LQuaternionf | operator- (const LQuaternionf &other) const |
LQuaternionf | operator- () const |
LVecBase4f | operator- (const LVecBase4f &other) const |
void | operator-= (const LVecBase4f &other) |
LQuaternionf | operator/ (float scalar) const |
void | operator/= (float scalar) |
bool | operator< (const LVecBase4f &other) const |
This performs a lexicographical comparison. | |
bool | operator== (const LVecBase4f &other) const |
float & | operator[] (int i) |
float | operator[] (int i) const |
void | output (ostream &) const |
LVecBase4f | project (const LVecBase4f &onto) const |
Returns a new vector representing the projection of this vector onto another one. | |
void | read_datagram (DatagramIterator &source) |
Function to read itself from a datagramIterator. | |
void | set (float x, float y, float z, float w) |
void | set_cell (int i, float value) |
void | set_from_axis_angle (float angle_deg, const LVector3f &axis) |
angle_deg is the angle about the axis in degrees. | |
void | set_from_axis_angle_rad (float angle_rad, const LVector3f &axis) |
angle_rad is the angle about the axis in radians. | |
void | set_from_matrix (const LMatrix4f &m) |
void | set_from_matrix (const LMatrix3f &m) |
Sets the quaternion according to the rotation represented by the matrix. | |
void | set_hpr (const LVecBase3f &hpr, CoordinateSystem cs=CS_default) |
Sets the quaternion as the unit quaternion that is equivalent to these Euler angles. | |
void | set_i (float i) |
void | set_j (float j) |
void | set_k (float k) |
void | set_r (float r) |
void | set_w (float value) |
void | set_x (float value) |
void | set_y (float value) |
void | set_z (float value) |
void | write_datagram (Datagram &destination) const |
Function to write itself into a datagram. | |
LVecBase3f | xform (const LVecBase3f &v) const |
Transforms a 3-d vector by the indicated rotation. | |
LVecBase4f | xform (const LVecBase4f &v) const |
Transforms a 4-d vector by the indicated rotation. | |
Static Public Member Functions | |
static TypeHandle | get_class_type () |
static const LQuaternionf & | ident_quat () |
Returns an identity quaternion. | |
static void | init_type () |
static LQuaternionf | pure_imaginary (const LVector3f &) |
static int | size () |
Returns 4: the number of components of a LVecBase4. | |
static const LVecBase4f & | unit_w () |
Returns a unit W vector. | |
static const LVecBase4f & | unit_x () |
Returns a unit X vector. | |
static const LVecBase4f & | unit_y () |
Returns a unit Y vector. | |
static const LVecBase4f & | unit_z () |
Returns a unit Z vector. | |
static const LVecBase4f & | zero () |
Returns a zero-length vector. | |
Public Attributes | |
union { | |
float data [4] | |
struct { | |
float _0 | |
float _1 | |
float _2 | |
float _3 | |
} v | |
} | _v |
This is a unit quaternion representing an orientation.
Definition at line 86 of file lorientation.h.
LOrientationf::LOrientationf | ( | const LVector3f & | point_at, |
float | twist | ||
) | [inline] |
vector + twist
Definition at line 159 of file lorientation.h.
LOrientationf::LOrientationf | ( | const LMatrix3f & | m | ) | [inline] |
matrix3
Definition at line 176 of file lorientation.h.
LOrientationf::LOrientationf | ( | const LMatrix4f & | m | ) | [inline] |
matrix4
Definition at line 186 of file lorientation.h.
size_t LVecBase4f::add_hash | ( | size_t | hash | ) | const [inline, inherited] |
Adds the vector into the running hash.
Definition at line 883 of file lvecBase4.h.
size_t LVecBase4f::add_hash | ( | size_t | hash, |
float | threshold | ||
) | const [inline, inherited] |
Adds the vector into the running hash.
Definition at line 894 of file lvecBase4.h.
bool LQuaternionf::almost_equal | ( | const LQuaternionf & | other | ) | const [inline, inherited] |
Returns true if two quaternions are memberwise equal within a default tolerance based on the numeric type.
Definition at line 448 of file lquaternion.h.
bool LQuaternionf::almost_equal | ( | const LQuaternionf & | other, |
float | threshold | ||
) | const [inline, inherited] |
Returns true if two quaternions are memberwise equal within a specified tolerance.
Definition at line 459 of file lquaternion.h.
bool LVecBase4f::almost_equal | ( | const LVecBase4f & | other, |
float | threshold | ||
) | const [inline, inherited] |
Returns true if two vectors are memberwise equal within a specified tolerance.
Definition at line 1055 of file lvecBase4.h.
Referenced by EggVertexPool::check_overall_color(), ColorScaleAttrib::fillin(), and EggLoader::make_polyset().
bool LVecBase4f::almost_equal | ( | const LVecBase4f & | other | ) | const [inline, inherited] |
Returns true if two vectors are memberwise equal within a default tolerance based on the numeric type.
Definition at line 1070 of file lvecBase4.h.
bool LQuaternionf::almost_same_direction | ( | const LQuaternionf & | other, |
float | threshold | ||
) | const [inline, inherited] |
Returns true if two quaternions represent the same rotation within a specified tolerance.
Definition at line 486 of file lquaternion.h.
float LQuaternionf::angle_deg | ( | const LQuaternionf & | other | ) | const [inline, inherited] |
Returns the angle between the orientation represented by this quaternion and the other one, expressed in degrees.
Definition at line 365 of file lquaternion.h.
float LQuaternionf::angle_rad | ( | const LQuaternionf & | other | ) | const [inline, inherited] |
Returns the angle between the orientation represented by this quaternion and the other one, expressed in radians.
Definition at line 353 of file lquaternion.h.
LVecBase4f::iterator LVecBase4f::begin | ( | ) | [inline, inherited] |
Returns an iterator that may be used to traverse the elements of the matrix, STL-style.
Definition at line 642 of file lvecBase4.h.
LVecBase4f::const_iterator LVecBase4f::begin | ( | ) | const [inline, inherited] |
Returns an iterator that may be used to traverse the elements of the matrix, STL-style.
Definition at line 664 of file lvecBase4.h.
int LVecBase4f::compare_to | ( | const LVecBase4f & | other | ) | const [inline, inherited] |
This flavor of compare_to uses a default threshold value based on the numeric type.
Definition at line 823 of file lvecBase4.h.
Referenced by Material::compare_to(), EggAttributes::compare_to(), ScissorEffect::compare_to_impl(), ScissorAttrib::compare_to_impl(), ColorScaleAttrib::compare_to_impl(), ColorBlendAttrib::compare_to_impl(), ColorAttrib::compare_to_impl(), StandardMunger::compare_to_impl(), StandardMunger::geom_compare_to_impl(), TransformState::sorts_less(), and EggMaterial::sorts_less_than().
int LVecBase4f::compare_to | ( | const LVecBase4f & | other, |
float | threshold | ||
) | const [inline, inherited] |
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).
Definition at line 838 of file lvecBase4.h.
LQuaternionf LQuaternionf::conjugate | ( | ) | const [inline, inherited] |
Returns the complex conjugate of this quat.
Definition at line 739 of file lquaternion.h.
bool LQuaternionf::conjugate_from | ( | const LQuaternionf & | other | ) | [inline, inherited] |
Computes the conjugate of the other quat, and stores the result in this quat.
This is a fully general operation and makes no assumptions about the type of transform represented by the quat.
The other quat must be a different object than this quat. However, if you need to get a conjugate of a quat in place, see conjugate_in_place.
The return value is true if the quat was successfully inverted, false if there was a singularity.
Definition at line 760 of file lquaternion.h.
bool LQuaternionf::conjugate_in_place | ( | ) | [inline, inherited] |
Sets this to be the conjugate of the current quat.
Returns true if the successful, false if the quat was singular.
Definition at line 773 of file lquaternion.h.
LVecBase4f::iterator LVecBase4f::end | ( | ) | [inline, inherited] |
Returns an iterator that may be used to traverse the elements of the matrix, STL-style.
Definition at line 653 of file lvecBase4.h.
LVecBase4f::const_iterator LVecBase4f::end | ( | ) | const [inline, inherited] |
Returns an iterator that may be used to traverse the elements of the matrix, STL-style.
Definition at line 675 of file lvecBase4.h.
void LQuaternionf::extract_to_matrix | ( | LMatrix3f & | m | ) | const [inherited] |
Based on the quat lib from VRPN.
Definition at line 102 of file lquaternion.cxx.
Referenced by TrackerNode::do_transmit_data(), FFTCompressor::read_hprs(), PhysxActorDesc::set_global_hpr(), and FFTCompressor::write_hprs().
void LQuaternionf::extract_to_matrix | ( | LMatrix4f & | m | ) | const [inherited] |
Based on the quat lib from VRPN.
Definition at line 123 of file lquaternion.cxx.
void LVecBase4f::fill | ( | float | fill_value | ) | [inline, inherited] |
Sets each element of the vector to the indicated fill_value.
This is particularly useful for initializing to zero.
Definition at line 687 of file lvecBase4.h.
void LVecBase4f::generate_hash | ( | ChecksumHashGenerator & | hashgen | ) | const [inline, inherited] |
Adds the vector to the indicated hash generator.
Definition at line 1110 of file lvecBase4.h.
void LVecBase4f::generate_hash | ( | ChecksumHashGenerator & | hashgen, |
float | threshold | ||
) | const [inline, inherited] |
Adds the vector to the indicated hash generator.
Definition at line 1121 of file lvecBase4.h.
float LQuaternionf::get_angle | ( | ) | const [inline, inherited] |
This, along with get_axis(), returns the rotation represented by the quaternion as an angle about an arbitrary axis.
This returns the angle, in degrees counterclockwise about the axis.
It is necessary to ensure the quaternion has been normalized (for instance, with a call to normalize()) before calling this method.
Definition at line 571 of file lquaternion.h.
float LQuaternionf::get_angle_rad | ( | ) | const [inline, inherited] |
This, along with get_axis(), returns the rotation represented by the quaternion as an angle about an arbitrary axis.
This returns the angle, in radians counterclockwise about the axis.
It is necessary to ensure the quaternion has been normalized (for instance, with a call to normalize()) before calling this method.
Definition at line 554 of file lquaternion.h.
LVector3f LQuaternionf::get_axis | ( | ) | const [inline, inherited] |
This, along with get_angle(), returns the rotation represented by the quaternion as an angle about an arbitrary axis.
This returns the axis; it is not normalized.
Definition at line 523 of file lquaternion.h.
LVector3f LQuaternionf::get_axis_normalized | ( | ) | const [inline, inherited] |
This, along with get_angle(), returns the rotation represented by the quaternion as an angle about an arbitrary axis.
This returns the normalized axis.
Definition at line 535 of file lquaternion.h.
const float * LVecBase4f::get_data | ( | ) | const [inline, inherited] |
Returns the address of the first of the four data elements in the vector.
The remaining elements occupy the next positions consecutively in memory.
Definition at line 621 of file lvecBase4.h.
Referenced by DXGraphicsStateGuardian9::bind_light(), DXGraphicsStateGuardian8::bind_light(), GraphicsStateGuardian::fetch_specified_part(), DXGraphicsStateGuardian9::get_light_color(), and DXGraphicsStateGuardian8::get_light_color().
LVector3f LQuaternionf::get_forward | ( | CoordinateSystem | cs = CS_default | ) | const [inline, inherited] |
Returns the orientation represented by this quaternion, expressed as a forward vector.
Definition at line 631 of file lquaternion.h.
size_t LVecBase4f::get_hash | ( | ) | const [inline, inherited] |
Returns a suitable hash for phash_map.
Definition at line 861 of file lvecBase4.h.
size_t LVecBase4f::get_hash | ( | float | threshold | ) | const [inline, inherited] |
Returns a suitable hash for phash_map.
Definition at line 872 of file lvecBase4.h.
LVecBase3f LQuaternionf::get_hpr | ( | CoordinateSystem | cs = CS_default | ) | const [inherited] |
Extracts the equivalent Euler angles from the unit quaternion.
Definition at line 197 of file lquaternion.cxx.
Referenced by CLerpNodePathInterval::priv_step(), CLerpNodePathInterval::set_end_hpr(), and PhysicsObject::write().
int LVecBase4f::get_num_components | ( | ) | const [inline, inherited] |
Returns the number of elements in the vector, four.
Definition at line 631 of file lvecBase4.h.
LVector3f LQuaternionf::get_right | ( | CoordinateSystem | cs = CS_default | ) | const [inline, inherited] |
Returns the orientation represented by this quaternion, expressed as a right vector.
Definition at line 620 of file lquaternion.h.
LVector3f LQuaternionf::get_up | ( | CoordinateSystem | cs = CS_default | ) | const [inline, inherited] |
Returns the orientation represented by this quaternion, expressed as an up vector.
Definition at line 609 of file lquaternion.h.
const LQuaternionf & LQuaternionf::ident_quat | ( | ) | [inline, static, inherited] |
Returns an identity quaternion.
Definition at line 845 of file lquaternion.h.
Referenced by TrackerData::get_orient(), NodePath::get_quat(), PhysicsObject::PhysicsObject(), and PhysicsObject::reset_orientation().
bool LQuaternionf::invert_from | ( | const LQuaternionf & | other | ) | [inline, inherited] |
Computes the inverse of the other quat, and stores the result in this quat.
This is a fully general operation and makes no assumptions about the type of transform represented by the quat.
The other quat must be a different object than this quat. However, if you need to invert a quat in place, see invert_in_place.
The return value is true if the quat was successfully inverted, false if there was a singularity.
Definition at line 798 of file lquaternion.h.
bool LQuaternionf::invert_in_place | ( | ) | [inline, inherited] |
Inverts the current quat.
Returns true if the inverse is successful, false if the quat was singular.
Definition at line 811 of file lquaternion.h.
bool LQuaternionf::is_almost_identity | ( | float | tolerance | ) | const [inline, inherited] |
Returns true if this quaternion represents the identity transformation within a given tolerance.
Definition at line 834 of file lquaternion.h.
bool LQuaternionf::is_identity | ( | ) | const [inline, inherited] |
Returns true if this quaternion represents the identity transformation: no rotation.
Definition at line 823 of file lquaternion.h.
bool LVecBase4f::is_nan | ( | ) | const [inline, inherited] |
Returns true if any component of the vector is not-a-number, false otherwise.
Definition at line 455 of file lvecBase4.h.
Referenced by PhysicsObject::add_local_torque(), PhysicsObject::add_torque(), PhysicsObject::reset_orientation(), CLerpNodePathInterval::set_end_color(), CLerpNodePathInterval::set_end_color_scale(), CLerpNodePathInterval::set_end_hpr(), CLerpNodePathInterval::set_end_quat(), PhysicsObject::set_rotation(), CLerpNodePathInterval::set_start_color(), CLerpNodePathInterval::set_start_color_scale(), and CLerpNodePathInterval::set_start_quat().
bool LQuaternionf::is_same_direction | ( | const LQuaternionf & | other | ) | const [inline, inherited] |
Returns true if two quaternions represent the same rotation within a default tolerance based on the numeric type.
Definition at line 475 of file lquaternion.h.
float LVecBase4f::length | ( | ) | const [inline, inherited] |
Returns the length of the vector, by the Pythagorean theorem.
Definition at line 716 of file lvecBase4.h.
float LVecBase4f::length_squared | ( | ) | const [inline, inherited] |
Returns the square of the vector's length, cheap and easy.
Definition at line 727 of file lvecBase4.h.
LQuaternionf LQuaternionf::multiply | ( | const LQuaternionf & | rhs | ) | const [inline, inherited] |
actual multiply call (non virtual)
Definition at line 306 of file lquaternion.h.
bool LQuaternionf::normalize | ( | ) | [inline, inherited] |
Normalizes the vector in place.
Returns true if the vector was normalized, false if it was a zero-length vector.
Reimplemented from LVecBase4f.
Definition at line 722 of file lquaternion.h.
Referenced by FFTCompressor::read_hprs(), and FFTCompressor::write_hprs().
Quat * Matrix = matrix.
Definition at line 416 of file lquaternion.h.
LOrientationf LOrientationf::operator* | ( | const LQuaternionf & | other | ) | const [inline] |
Orientation * Orientation This is a meaningless operation, and will always simply return the rhs.
Reimplemented from LQuaternionf.
Definition at line 209 of file lorientation.h.
Quat * Matrix = matrix.
Definition at line 428 of file lquaternion.h.
LOrientationf LOrientationf::operator* | ( | const LRotationf & | other | ) | const [inline] |
Orientation * rotation = Orientation Applies a rotation to an orientation.
Definition at line 197 of file lorientation.h.
bool LVecBase4f::operator< | ( | const LVecBase4f & | other | ) | const [inline, inherited] |
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().
Definition at line 787 of file lvecBase4.h.
LVecBase4f LVecBase4f::project | ( | const LVecBase4f & | onto | ) | const [inline, inherited] |
Returns a new vector representing the projection of this vector onto another one.
The resulting vector will be a scalar multiple of onto.
Reimplemented in LPoint4f, and LVector4f.
Definition at line 773 of file lvecBase4.h.
void LVecBase4f::read_datagram | ( | DatagramIterator & | source | ) | [inline, inherited] |
Function to read itself from a datagramIterator.
Definition at line 1155 of file lvecBase4.h.
Referenced by TransformState::fillin(), ScissorEffect::fillin(), ScissorAttrib::fillin(), Fog::fillin(), ColorScaleAttrib::fillin(), ColorBlendAttrib::fillin(), ColorAttrib::fillin(), NurbsCurve::fillin(), CubicCurveseg::fillin(), TextureStage::fillin(), Texture::fillin(), and Material::fillin().
void LQuaternionf::set_from_axis_angle | ( | float | angle_deg, |
const LVector3f & | axis | ||
) | [inline, inherited] |
angle_deg is the angle about the axis in degrees.
axis must be normalized.
Definition at line 598 of file lquaternion.h.
Referenced by PhysicsObject::add_impact().
void LQuaternionf::set_from_axis_angle_rad | ( | float | angle_rad, |
const LVector3f & | axis | ||
) | [inline, inherited] |
angle_rad is the angle about the axis in radians.
axis must be normalized.
Definition at line 582 of file lquaternion.h.
void LQuaternionf::set_from_matrix | ( | const LMatrix3f & | m | ) | [inherited] |
Sets the quaternion according to the rotation represented by the matrix.
Originally we tried an algorithm presented by Do-While Jones, but that turned out to be broken. This is based on the quat lib from UNC.
Definition at line 301 of file lquaternion.cxx.
void LQuaternionf::set_hpr | ( | const LVecBase3f & | hpr, |
CoordinateSystem | cs = CS_default |
||
) | [inherited] |
Sets the quaternion as the unit quaternion that is equivalent to these Euler angles.
(from Real-time Rendering, p.49)
Definition at line 147 of file lquaternion.cxx.
Referenced by AngularVectorForce::AngularVectorForce(), CConstrainHprInterval::CConstrainHprInterval(), CConstrainPosHprInterval::CConstrainPosHprInterval(), AnimChannelMatrixXfmTable::get_quat(), AnimChannelMatrixFixed::get_quat(), PhysxActor::move_global_hpr(), CLerpNodePathInterval::priv_step(), CLerpNodePathInterval::set_end_quat(), PhysxActorDesc::set_global_hpr(), and PhysxActor::set_global_hpr().
int LVecBase4f::size | ( | ) | [inline, static, inherited] |
Returns 4: the number of components of a LVecBase4.
Definition at line 444 of file lvecBase4.h.
const LVecBase4f & LVecBase4f::unit_w | ( | ) | [inline, static, inherited] |
Returns a unit W vector.
Reimplemented in LPoint4f, and LVector4f.
Definition at line 399 of file lvecBase4.h.
const LVecBase4f & LVecBase4f::unit_x | ( | ) | [inline, static, inherited] |
Returns a unit X vector.
Reimplemented in LPoint4f, and LVector4f.
Definition at line 369 of file lvecBase4.h.
const LVecBase4f & LVecBase4f::unit_y | ( | ) | [inline, static, inherited] |
Returns a unit Y vector.
Reimplemented in LPoint4f, and LVector4f.
Definition at line 379 of file lvecBase4.h.
const LVecBase4f & LVecBase4f::unit_z | ( | ) | [inline, static, inherited] |
Returns a unit Z vector.
Reimplemented in LPoint4f, and LVector4f.
Definition at line 389 of file lvecBase4.h.
void LVecBase4f::write_datagram | ( | Datagram & | destination | ) | const [inline, inherited] |
Function to write itself into a datagram.
Definition at line 1135 of file lvecBase4.h.
Referenced by TransformState::write_datagram(), ScissorEffect::write_datagram(), ScissorAttrib::write_datagram(), Fog::write_datagram(), ColorScaleAttrib::write_datagram(), ColorBlendAttrib::write_datagram(), ColorAttrib::write_datagram(), NurbsCurve::write_datagram(), CubicCurveseg::write_datagram(), TextureStage::write_datagram(), Texture::write_datagram(), and Material::write_datagram().
LVecBase3f LQuaternionf::xform | ( | const LVecBase3f & | v | ) | const [inline, inherited] |
Transforms a 3-d vector by the indicated rotation.
Definition at line 274 of file lquaternion.h.
Referenced by PhysicsObject::add_local_impact(), PhysicsObject::add_local_impulse(), and PhysicsObject::add_local_torque().
LVecBase4f LQuaternionf::xform | ( | const LVecBase4f & | v | ) | const [inline, inherited] |
Transforms a 4-d vector by the indicated rotation.
Definition at line 290 of file lquaternion.h.
const LVecBase4f & LVecBase4f::zero | ( | ) | [inline, static, inherited] |
Returns a zero-length vector.
Reimplemented in LPoint4f, and LVector4f.
Definition at line 359 of file lvecBase4.h.
Referenced by NurbsBasisVector::append_segment(), EggGroup::clear_blend_color(), GeomVertexData::copy_from(), NurbsCurve::get_cv(), GeomVertexReader::get_data4f(), PhysxActor::get_global_quat(), NurbsSurfaceEvaluator::get_vertex(), NurbsCurveEvaluator::get_vertex(), LineSegs::get_vertex_color(), ScissorEffect::make_from_bam(), ColorAttrib::make_from_bam(), NurbsCurveResult::NurbsCurveResult(), and NurbsCurve::rebuild_curveseg().