spiral path generation in unity

i am doing one project in unity. and i want to make path which should be automatically generate in spiral view . first of all i will provide the initial point and also ending point and finally based these point it should be able to generate the path in 3D view.

please anyone help me as soon as possible
thanks in advance …

use rotateAround rotate around the center point

as you approach 1/2 pi radians

slerp from where you are to RotateAround result + (postion - point)

you rotate around a point while slowly increasing your distance from the object

the result will be a spiral pattern as long as you control for the speed at which you slerp