51         template <
typename T, precision P, 
template <
typename, precision> 
class vecType>
 
   53                 vecType<T, P> 
const & x);
 
   61         template <
typename T, precision P, 
template <
typename, precision> 
class vecType>
 
   63                 vecType<T, P> 
const & p0,
 
   64                 vecType<T, P> 
const & p1);
 
   72         template <
typename T, precision P, 
template <
typename, precision> 
class vecType>
 
   74                 vecType<T, P> 
const & x,
 
   75                 vecType<T, P> 
const & y);
 
   83         template <
typename T, precision P>
 
   84         GLM_FUNC_DECL tvec3<T, P> 
cross(
 
   85                 tvec3<T, P> 
const & x,
 
   86                 tvec3<T, P> 
const & y);
 
   93         template <
typename T, precision P, 
template <
typename, precision> 
class vecType>
 
   95                 vecType<T, P> 
const & x);
 
  103         template <
typename genType>
 
  107                 genType 
const & Nref);
 
  116         template <
typename genType>
 
  129         template <
typename T, precision P, 
template <
typename, precision> 
class vecType>
 
  130         GLM_FUNC_DECL vecType<T, P> 
refract(
 
  131                 vecType<T, P> 
const & I,
 
  132                 vecType<T, P> 
const & N,
 
  138 #include "func_geometric.inl" 
GLM_FUNC_DECL T length(vecType< T, P > const &x)
Returns the length of x, i.e., sqrt(x * x). 
GLM_FUNC_DECL vecType< T, P > normalize(vecType< T, P > const &x)
Returns a vector in the same direction as x but with length of 1. 
OpenGL Mathematics (glm.g-truc.net) 
GLM_FUNC_DECL vecType< T, P > refract(vecType< T, P > const &I, vecType< T, P > const &N, T eta)
For the incident vector I and surface normal N, and the ratio of indices of refraction eta...
GLM_FUNC_DECL genType reflect(genType const &I, genType const &N)
For the incident vector I and surface orientation N, returns the reflection direction : result = I - ...
GLM_FUNC_DECL T distance(vecType< T, P > const &p0, vecType< T, P > const &p1)
Returns the distance betwwen p0 and p1, i.e., length(p0 - p1). 
GLM_FUNC_DECL genType faceforward(genType const &N, genType const &I, genType const &Nref)
If dot(Nref, I) < 0.0, return N, otherwise, return -N. 
GLM_FUNC_DECL T dot(vecType< T, P > const &x, vecType< T, P > const &y)
Returns the dot product of x and y, i.e., result = x * y. 
GLM_FUNC_DECL tvec3< T, P > cross(tvec3< T, P > const &x, tvec3< T, P > const &y)
Returns the cross product of x and y.