public struct float3(float x, float y, float z)
{
    public float x = x;
    public float y = y;
    public float z = z;
    
    public float r
    {
        get => x; set => x = value;
    }
    public float g
    {
        get => y; set => y = value;
    }
    public float b
    {
        get => z; set => z = value;
    }

    public static float3 operator -(float3 a, float3 b) => new float3(a.x - b.x, a.y - b.y, a.z - b.y);

    public static float3 cross(float3 a, float3 b) => new float3(a.y * b.z - a.z * b.y, a.z * b.x - a.x * b.z, a.x * b.y - a.y * b.x);
    
    public static float dot(float3 a, float3 b) => a.x * b.x + a.y * b.y + a.z * b.z;

}

public struct float2(float x, float y)
{
    public float x = x;
    public float y = y;
}