BluSunrize

	/**
	 * Checks if  point is contained within a cone in 3D space
	 *
	 * @param start tip of the cone
	 * @param normDirection normalized (length==1) vector, direction of cone
	 * @param radius radius at the end of the cone
	 * @param length length of the cone
	 * @param truncationLength optional lenght at which the cone is truncated (flat tip)
	 * @param relativePoint point to be checked, relative to {@code start}
	 */