struct foo {
	float *stuff;
	int offset;

	float operator[](size_t i) const
	{
		return stuff[i + offset];
	}

	float &operator[](size_t i)
	{
		return stuff[i + offset];
	}
};

struct Particles
{
	float *pos;

	foo x, y, z;

	Particles(int num)
	{
		pos = new float[num * 3];
		x.stuff = y.stuff = z.stuff = pos;
		x.offset = 0;
		y.offset = num;
		z.offset = num * 2;

		for(int i = 0; i < num * 3; i++)
		{
			pos[i] = (float)i;
		}
	}

	~Particles()
	{
		delete[] pos;
	}

};