public Material(float r_index, Point4 albedo, Point color, float spec)
{
this.albedo = albedo;
this.diffuse_color = color;
this.specular_exponent = spec;
this.refractive_index = r_index;
}
public float refractive_index; // показатель преломления
public Material()
{
this.albedo = new Point4(1, 0, 0, 0);
this.diffuse_color = new Point();
this.specular_exponent = 0;
this.refractive_index = 1;
}