/usr/include/glm/gtx/normal.inl is in libglm-dev 0.9.9~a2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | /// @ref gtx_normal
/// @file glm/gtx/normal.inl
namespace glm
{
template<typename T, qualifier Q>
GLM_FUNC_QUALIFIER vec<3, T, Q> triangleNormal
(
vec<3, T, Q> const& p1,
vec<3, T, Q> const& p2,
vec<3, T, Q> const& p3
)
{
return normalize(cross(p1 - p2, p1 - p3));
}
}//namespace glm
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