36 lines
734 B
C++
36 lines
734 B
C++
/// @ref gtx_polar_coordinates
|
|
|
|
namespace glm
|
|
{
|
|
template<typename T, qualifier Q>
|
|
GLM_FUNC_QUALIFIER vec<3, T, Q> polar
|
|
(
|
|
vec<3, T, Q> const& euclidean
|
|
)
|
|
{
|
|
T const Length(length(euclidean));
|
|
vec<3, T, Q> const tmp(euclidean / Length);
|
|
T const xz_dist(sqrt(tmp.x * tmp.x + tmp.z * tmp.z));
|
|
|
|
return vec<3, T, Q>(
|
|
asin(tmp.y), // latitude
|
|
atan(tmp.x, tmp.z), // longitude
|
|
xz_dist); // xz distance
|
|
}
|
|
|
|
template<typename T, qualifier Q>
|
|
GLM_FUNC_QUALIFIER vec<3, T, Q> euclidean
|
|
(
|
|
vec<2, T, Q> const& polar
|
|
)
|
|
{
|
|
T const latitude(polar.x);
|
|
T const longitude(polar.y);
|
|
|
|
return vec<3, T, Q>(
|
|
cos(latitude) * sin(longitude),
|
|
sin(latitude),
|
|
cos(latitude) * cos(longitude));
|
|
}
|
|
|
|
}//namespace glm
|