Vector4f specularTerm(Vector4f ks, Vector4f intens, Vector4f normal, Vector4f light, Vector4f viewer, float p){
Vector4f refl = light*(float)(-1) + normal*((float)2*(light.adjoint()*normal));
float dotProduct = refl.adjoint()*viewer;
dotProduct = max(dotProduct,(float)0);
if (dotProduct==(float)0){
return Vector4f(0,0,0,0);
}else{
return times(ks,intens)* pow(dotProduct, p);
}
};
// Shading
Vector4f diffuseTerm(Vector4f kd, Vector4f intens, Vector4f normal, Vector4f light){
float dotProduct = light.adjoint()*normal;
dotProduct = max(dotProduct,(float)0);
if (dotProduct == (float)0) {
return Vector4f(0,0,0,0);
}
else{
return times(kd,intens).adjoint()*dotProduct;
}
};
// Shading
Color diffuseTerm(Color kd, Color intens, Vector4f normal, Vector4f light){
float dotProduct = light.adjoint()*normal;
dotProduct = max(dotProduct,(float)0);
if (dotProduct == (float)0) {
return Color(0.0f, 0.0f, 0.0f);
}
else{
return (kd*intens)*dotProduct;
}
};
Vector4f find_reflection(Ray ray, Vector4f normal){
// if (ray.direction[3] != 0 || ray.origin[3] != 1){
// cout << ray.direction << endl;
// cout << ray.origin << endl;
// }
Vector4f direction = ray.direction;
float c = -normal.adjoint()*direction;
float divider = normal[0]*normal[0]+normal[1]*normal[1]+normal[2]*normal[2];
c = c/divider;
Vector4f Reflect = direction + (2*normal*c);
return Reflect;
};
