diff options
author | Stanislaw Halik <sthalik@misaki.pl> | 2014-11-07 06:54:03 +0100 |
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committer | Stanislaw Halik <sthalik@misaki.pl> | 2014-11-07 06:54:03 +0100 |
commit | 9d30b78610fc652cc180c96b191e615fa903ec82 (patch) | |
tree | c7814eb57e10eff894c07ab4db8fb63c7b29bf29 /opentrack | |
parent | 4814dc521b43a0d9b54c5c56300872fd3667189d (diff) |
quat class rot in hell again
Issue: #63
Diffstat (limited to 'opentrack')
-rw-r--r-- | opentrack/quat.hpp | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/opentrack/quat.hpp b/opentrack/quat.hpp deleted file mode 100644 index e5e74df4..00000000 --- a/opentrack/quat.hpp +++ /dev/null @@ -1,71 +0,0 @@ -/* Copyright (c) 2012 Patrick Ruoff - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - */ - -#pragma once -#include <cmath> - -class Quat { -private: - static constexpr double pi = 3.141592653; - static constexpr double r2d = 180./pi; - double a,b,c,d; // quaternion coefficients -public: - Quat() : a(1.),b(0.),c(0.),d(0.) {} - Quat(double yaw, double pitch, double roll) { *this = from_euler_rads(yaw, pitch, roll); } - Quat(double a, double b, double c, double d) : a(a),b(b),c(c),d(d) {} - - Quat inv() const - { - return Quat(a,-b,-c, -d); - } - - // conversions - // see http://en.wikipedia.org/wiki/Conversion_between_quaternions_and_Euler_angles - static Quat from_euler_rads(double yaw, double pitch, double roll) - { - - const double sin_phi = sin(roll/2.); - const double cos_phi = cos(roll/2.); - const double sin_the = sin(pitch/2.); - const double cos_the = cos(pitch/2.); - const double sin_psi = sin(yaw/2.); - const double cos_psi = cos(yaw/2.); - - Quat q; - - q.a = cos_phi*cos_the*cos_psi + sin_phi*sin_the*sin_psi; - q.b = sin_phi*cos_the*cos_psi - cos_phi*sin_the*sin_psi; - q.c = cos_phi*sin_the*cos_psi + sin_phi*cos_the*sin_psi; - q.d = cos_phi*cos_the*sin_psi - sin_phi*sin_the*cos_psi; - - return q; - } - - void to_euler_rads(double& yaw, double& pitch, double& roll) const - { - roll = atan2(2.*(a*b + c*d), 1. - 2.*(b*b + c*c)); - pitch = asin(2.*(a*c - b*d)); - yaw = atan2(2.*(a*d + b*c), 1. - 2.*(c*c + d*d)); - } - - void to_euler_degrees(double& yaw, double& pitch, double& roll) const - { - to_euler_rads(yaw, pitch, roll); - yaw *= r2d; - pitch *= r2d; - roll *= r2d; - } - - const Quat operator*(const Quat& B) const - { - const Quat& A = *this; - return Quat(A.a*B.a - A.b*B.b - A.c*B.c - A.d*B.d, // quaternion multiplication - A.a*B.b + A.b*B.a + A.c*B.d - A.d*B.c, - A.a*B.c - A.b*B.d + A.c*B.a + A.d*B.b, - A.a*B.d + A.b*B.c - A.c*B.b + A.d*B.a); - } -}; |