You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57 lines
1.6 KiB
57 lines
1.6 KiB
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// OpenGL Mathematics Copyright (c) 2005 - 2013 G-Truc Creation (www.g-truc.net)
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// Created : 2005-12-30
|
|
// Updated : 2008-09-29
|
|
// Licence : This source is under MIT License
|
|
// File : glm/gtx/vector_angle.inl
|
|
///////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
namespace glm
|
|
{
|
|
template <typename genType>
|
|
GLM_FUNC_QUALIFIER typename genType::value_type angle
|
|
(
|
|
genType const & x,
|
|
genType const & y
|
|
)
|
|
{
|
|
return degrees(acos(dot(x, y)));
|
|
}
|
|
|
|
//! \todo epsilon is hard coded to 0.01
|
|
template <typename valType>
|
|
GLM_FUNC_QUALIFIER valType orientedAngle
|
|
(
|
|
detail::tvec2<valType> const & x,
|
|
detail::tvec2<valType> const & y
|
|
)
|
|
{
|
|
#ifdef GLM_FORCE_RADIANS
|
|
valType const Angle(acos(dot(x, y)));
|
|
#else
|
|
valType const Angle(glm::degrees(acos(dot(x, y))));
|
|
#endif
|
|
detail::tvec2<valType> const TransformedVector(glm::rotate(x, Angle));
|
|
if(all(epsilonEqual(y, TransformedVector, valType(0.01))))
|
|
return Angle;
|
|
else
|
|
return -Angle;
|
|
}
|
|
|
|
template <typename valType>
|
|
GLM_FUNC_QUALIFIER valType orientedAngle
|
|
(
|
|
detail::tvec3<valType> const & x,
|
|
detail::tvec3<valType> const & y,
|
|
detail::tvec3<valType> const & ref
|
|
)
|
|
{
|
|
valType const Angle(glm::degrees(glm::acos(glm::dot(x, y))));
|
|
|
|
if(glm::dot(ref, glm::cross(x, y)) < valType(0))
|
|
return -Angle;
|
|
else
|
|
return Angle;
|
|
}
|
|
}//namespace glm
|