float x1 = x[0];
	float y1 = x[1];
	float z1 = x[2];

	float tar = 0.002*y1*y1 + 0.5;
	x1 /= tar;
	z1 /= tar;

	double angle = 4*PI*y1/30.0f;
	float xt = x1*cos(angle) + z1*sin(angle);
	float yt = y1;
	float zt = -x1*sin(angle) + z1*cos(angle);

	float rect = R_int(R_int(2 - fabs(xt-5), 19 - fabs(yt)), 6 - fabs(zt));

	return rect;