public boolean hit(Vector3D start, Vector3D direction, double mint,
			double maxt) {
		Vector3D solution = getHitSolution(start, direction);
		if (solution != null && solution.x > 0 && solution.y > 0
				&& solution.x + solution.y < 1 && solution.z > mint
				&& solution.z < maxt) {
			return true;
		} else {
			return false;
		}

	}