almostEqual bool LQuaterniond::almost_equal(LQuaterniond const &other) const; Description: Returns true if two quaternions are memberwise equal within a default tolerance based on the numeric type. Description: Returns true if two quaternions are memberwise equal within a specified tolerance. |
almostSameDirection bool LQuaterniond::almost_same_direction(LQuaterniond const &other, double threshold) const; Description: Returns true if two quaternions represent the same rotation within a specified tolerance. |
angleDeg double LQuaterniond::angle_deg(LQuaterniond const &other) const; Description: Returns the angle between the orientation represented by this quaternion and the other one, expressed in degrees. |
angleRad double LQuaterniond::angle_rad(LQuaterniond const &other) const; Description: Returns the angle between the orientation represented by this quaternion and the other one, expressed in radians. |
extractToMatrix void LQuaterniond::extract_to_matrix(LMatrix3d &m) const; Description: Based on the quat lib from VRPN. |
getAngle double LQuaterniond::get_angle(void) const; Description: 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. |
getAxis LVector3d LQuaterniond::get_axis(void) const; Description: 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. |
getClassType static TypeHandle LQuaterniond::get_class_type(void); Undocumented function. |
getForward LVector3d LQuaterniond::get_forward(CoordinateSystem cs = (CS_default)) const; Description: Returns the orientation represented by this quaternion, expressed as a forward vector. |
getHpr LVecBase3d LQuaterniond::get_hpr(CoordinateSystem cs = (CS_default)) const; Description: Extracts the equivalent Euler angles from the unit quaternion. |
getI double LQuaterniond::get_i(void) const; Description: |
getJ double LQuaterniond::get_j(void) const; Description: |
getK double LQuaterniond::get_k(void) const; Description: |
getR double LQuaterniond::get_r(void) const; Description: |
getRight LVector3d LQuaterniond::get_right(CoordinateSystem cs = (CS_default)) const; Description: Returns the orientation represented by this quaternion, expressed as a right vector. |
getUp LVector3d LQuaterniond::get_up(CoordinateSystem cs = (CS_default)) const; Description: Returns the orientation represented by this quaternion, expressed as an up vector. |
identQuat static LQuaterniond const &LQuaterniond::ident_quat(void); Description: Returns an identity quaternion. |
invertFrom bool LQuaterniond::invert_from(LQuaterniond const &other); Description: 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. |
invertInPlace bool LQuaterniond::invert_in_place(void); Description: Inverts the current quat. Returns true if the inverse is successful, false if the quat was singular. |
isAlmostIdentity bool LQuaterniond::is_almost_identity(double tolerance) const; Description: Returns true if this quaternion represents the identity transformation within a given tolerance. |
isIdentity bool LQuaterniond::is_identity(void) const; Description: Returns true if this quaternion represents the identity transformation: no rotation. |
isSameDirection bool LQuaterniond::is_same_direction(LQuaterniond const &other) const; Description: Returns true if two quaternions represent the same rotation within a default tolerance based on the numeric type. |
multiply LQuaterniond LQuaterniond::multiply(LQuaterniond const &rhs) const; Description: actual multiply call (non virtual) |
normalize bool LQuaterniond::normalize(void); Description: |
operator * LQuaterniond LQuaterniond::operator *(double scalar) const; Description: Description: Quat * Matrix = matrix |
operator *= LQuaterniond &LQuaterniond::operator *=(LQuaterniond const &); Description: |
operator + LQuaterniond LQuaterniond::operator +(LQuaterniond const &other) const; Description: |
operator - LQuaterniond LQuaterniond::operator -(void) const; Description: |
operator / LQuaterniond LQuaterniond::operator /(double scalar) const; Description: |
output void LQuaterniond::output(ostream &) const; Description: |
pureImaginary static LQuaterniond LQuaterniond::pure_imaginary(LVector3d const &); Description: |
setFromMatrix void LQuaterniond::set_from_matrix(LMatrix3d const &m); Description: Description: 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. |
setHpr void LQuaterniond::set_hpr(LVecBase3d const &hpr, CoordinateSystem cs = (CS_default)); Description: Sets the quaternion as the unit quaternion that is equivalent to these Euler angles. (from Real-time Rendering, p.49) |
setI void LQuaterniond::set_i(double i); Description: |
setJ void LQuaterniond::set_j(double j); Description: |
setK void LQuaterniond::set_k(double k); Description: |
setR void LQuaterniond::set_r(double r); Description: |
xform LVecBase3d LQuaterniond::xform(LVecBase3d const &v) const; Description: Transforms a 3-d vector by the indicated rotation |
addHash unsigned int LVecBase4d::add_hash(unsigned int hash) const; Description: Adds the vector into the running hash. |
addToCell void LVecBase4d::add_to_cell(int i, double 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: |
addW void LVecBase4d::add_w(double value); Description: |
addX void LVecBase4d::add_x(double 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 LVecBase4d::add_y(double value); Description: |
addZ void LVecBase4d::add_z(double value); Description: |
almostEqual bool LVecBase4d::almost_equal(LVecBase4d const &other, double 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 LVecBase4d::compare_to(LVecBase4d 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). |
dot double LVecBase4d::dot(LVecBase4d const &other) const; Description: |
fill void LVecBase4d::fill(double fill_value); Description: Sets each element of the vector to the indicated fill_value. This is particularly useful for initializing to zero. |
getCell double LVecBase4d::get_cell(int i) const; Description: |
getClassType static TypeHandle LVecBase4d::get_class_type(void); Undocumented function. |
getData double const *LVecBase4d::get_data(void) const; Description: Returns the address of the first of the four data elements in the vector. The remaining elements occupy the next positions consecutively in memory. |
getHash unsigned int LVecBase4d::get_hash(void) const; Description: Returns a suitable hash for phash_map. |
getNumComponents int LVecBase4d::get_num_components(void) const; Description: Returns the number of elements in the vector, four. |
getW double LVecBase4d::get_w(void) const; Description: |
getX double LVecBase4d::get_x(void) const; Description: |
getY double LVecBase4d::get_y(void) const; Description: |
getZ double LVecBase4d::get_z(void) const; Description: |
isNan bool LVecBase4d::is_nan(void) const; Description: Returns true if any component of the vector is not-a-number, false otherwise. |
operator != bool LVecBase4d::operator !=(LVecBase4d const &other) const; Description: |
operator * LVecBase4d LVecBase4d::operator *(double scalar) const; Description: |
operator *= void LVecBase4d::operator *=(double scalar); Description: |
operator + LVecBase4d LVecBase4d::operator +(LVecBase4d const &other) const; Description: |
operator += void LVecBase4d::operator +=(LVecBase4d const &other); Description: |
operator - LVecBase4d LVecBase4d::operator -(void) const; Description: |
operator -= void LVecBase4d::operator -=(LVecBase4d const &other); Description: |
operator / LVecBase4d LVecBase4d::operator /(double scalar) const; Description: |
operator /= void LVecBase4d::operator /=(double scalar); Description: |
operator < bool LVecBase4d::operator <(LVecBase4d 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 = LVecBase4d &LVecBase4d::operator =(LVecBase4d const ©); Description: |
operator == bool LVecBase4d::operator ==(LVecBase4d const &other) const; Description: |
operator [] double LVecBase4d::operator [](int i) const; Description: |
output void LVecBase4d::output(ostream &out) const; Description: |
pythonRepr void LVecBase4d::python_repr(ostream &out, string const &class_name) const; Description: |
set void LVecBase4d::set(double x, double y, double z, double w); Description: |
setCell void LVecBase4d::set_cell(int i, double value); Description: |
setW void LVecBase4d::set_w(double value); Description: |
setX void LVecBase4d::set_x(double value); Description: |
setY void LVecBase4d::set_y(double value); Description: |
setZ void LVecBase4d::set_z(double value); Description: |
unitW static LVecBase4d const &LVecBase4d::unit_w(void); Description: Returns a unit W vector. |
unitX static LVecBase4d const &LVecBase4d::unit_x(void); Description: Returns a unit X vector. |
unitY static LVecBase4d const &LVecBase4d::unit_y(void); Description: Returns a unit Y vector. |
unitZ static LVecBase4d const &LVecBase4d::unit_z(void); Description: Returns a unit Z vector. |
zero static LVecBase4d const &LVecBase4d::zero(void); Description: Returns a zero-length vector. |