LYGIA Shader Library

Dependencies:

• lygia/math/dot.cuh
• lygia/math/operations.cuh

Check it on Github

////////////////////////////////////////////////////////////////////////////////
// reflect
// - returns reflection of incident ray I around surface normal N
// - N should be normalized, reflected vector's length is equal to length of I
////////////////////////////////////////////////////////////////////////////////

#ifndef FNC_REFLECT
#define FNC_REFLECT

inline __host__ __device__ float3 reflect(const float3& i, const float3& n) { return i - 2.0f * n * dot(n, i); }

#endif