include/crbn/basic/ray.hpp

#ifndef __ray_hpp__
#define __ray_hpp__

#include <crbn/basic/vec3.hpp>

struct ray {
  vec3 origin, direction;

  float index; // Index of the vacuum where the ray is

  int bounce; //

  ray() : origin(0.0), direction(0.0, 0.0, 1.0), index(1.0), bounce(0) {}
  ray( const vec3& o, const vec3& d, const float& i=1.0, const int& b=0 ) : 
    origin(o),
    direction(d),
    index(i),
    bounce(b)
  {}

  ray( const ray& r ) : 
    origin(r.origin),
    direction(r.direction),
    index(r.index),
    bounce(r.bounce)
  {}

  ray& operator= (const ray& r) {
    origin    = r.origin;
    direction = r.direction;
    index     = r.index;
    bounce    = r.bounce;

    return *this;
  }
};

// p = p.o + f * p.d
inline void on( vec3& p, ray& r, float f )
{
  vaddfmul( p, r.origin, f, r.direction );
}

#endif // __ray_hpp__

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