struct Vector3
{
float x, y, z;
Vector3(): x(0), y(0), z(0) { }
Vector3(float x_, float y_, float z_): x(x_), y(y_), z(z_) { }
struct Vector3
{
float x, y, z;
Vector3(): x(0), y(0), z(0) { }
Vector3(float x_, float y_, float z_): x(x_), y(y_), z(z_) { }