From 5773da9e78a61daf5bd2a3ee0504683e56af72f5 Mon Sep 17 00:00:00 2001 From: Stijn Buys Date: Sun, 30 Dec 2012 23:15:48 +0000 Subject: Added math::Axis::rotate() variant. --- src/math/axis.cc | 9 +++++---- src/math/axis.h | 2 ++ 2 files changed, 7 insertions(+), 4 deletions(-) (limited to 'src/math') diff --git a/src/math/axis.cc b/src/math/axis.cc index 60d3797..a5ea397 100644 --- a/src/math/axis.cc +++ b/src/math/axis.cc @@ -104,11 +104,8 @@ void Axis::change_roll(const float angle) /* notes: http://mathworld.wolfram.com/RotationFormula.html */ -void Axis::rotate(Vector3f const &normal, float rad) +void Axis::rotate(Vector3f const &normal, float cosa, float sina) { - float cosa = cosf(rad); - float sina = sinf(rad); - for (size_t i = 0; i < 3; i++) { axis_vector[i] = axis_vector[i] * cosa + @@ -116,6 +113,10 @@ void Axis::rotate(Vector3f const &normal, float rad) crossproduct(axis_vector[i], normal) * sina; } } +void Axis::rotate(Vector3f const &normal, float rad) +{ + rotate(normal, cosf(rad), sinf(rad)); +} const Axis Axis::transpose() const { diff --git a/src/math/axis.h b/src/math/axis.h index 3991843..ef90654 100644 --- a/src/math/axis.h +++ b/src/math/axis.h @@ -86,6 +86,8 @@ public: * @brief rotation about an arbitrary vector * @param rad angle in radians **/ + void rotate(Vector3f const &normal, float cosa, float sina); + void rotate(const Vector3f & normal, const float rad); /// return the transpose of this matrix -- cgit v1.2.3