diff options
Diffstat (limited to 'facetracknoir/rotation.h')
-rw-r--r-- | facetracknoir/rotation.h | 58 |
1 files changed, 0 insertions, 58 deletions
diff --git a/facetracknoir/rotation.h b/facetracknoir/rotation.h deleted file mode 100644 index b3bb891e..00000000 --- a/facetracknoir/rotation.h +++ /dev/null @@ -1,58 +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 { - -public: - Quat() : a(1.0),b(0.0),c(0.0),d(0.0) {} - Quat(double yaw, double pitch, double roll) { fromEuler(yaw, pitch, roll); } - Quat(double a, double b, double c, double d) : a(a),b(b),c(c),d(d) {} - - Quat inv(){ - return Quat(a,-b,-c, -d); - } - - // conversions - // see http://en.wikipedia.org/wiki/Conversion_between_quaternions_and_Euler_angles - void fromEuler(double yaw, double pitch, double roll) - { - - double sin_phi = sin(roll/2.0); - double cos_phi = cos(roll/2.0); - double sin_the = sin(pitch/2.0); - double cos_the = cos(pitch/2.0); - double sin_psi = sin(yaw/2.0); - double cos_psi = cos(yaw/2.0); - - a = cos_phi*cos_the*cos_psi + sin_phi*sin_the*sin_psi; - b = sin_phi*cos_the*cos_psi - cos_phi*sin_the*sin_psi; - c = cos_phi*sin_the*cos_psi + sin_phi*cos_the*sin_psi; - d = cos_phi*cos_the*sin_psi - sin_phi*sin_the*cos_psi; - } - - void toEuler(double& yaw, double& pitch, double& roll) const - { - roll = atan2(2.0*(a*b + c*d), 1.0 - 2.0*(b*b + c*c)); - pitch = asin(2.0*(a*c - b*d)); - yaw = atan2(2.0*(a*d + b*c), 1.0 - 2.0*(c*c + d*d)); - } - - 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); - } - -private: - double a,b,c,d; // quaternion coefficients -}; |