text: #ifndef SVIT_PHONG_MATERIAL
  #define SVIT_PHONG_MATERIAL
  
  #include "material/material.h"
  #include "texture/texture.h"
  
  namespace Svit
  {
  	class PhongMaterial : public Material
  	{
  		private:
  			std::unique_ptr<Texture> texture;
  			float exp;
  				
  		public:
  			PhongMaterial (std::unique_ptr<Texture> _texture, 
  			    float _exp);
  
  			Vector3
  			get_reflectance (Point3 _point, Vector3 _normal, Vector3 _in, 
  			    Vector3 _out);
  	};
  }
  
  #endif
  
  