[Solved] Trouble with moving vertices according to math function.

Hello everyone spending time for beginner's question :)

I want to create a script that converts an object to an editable poly, and then it changes third coordinate (z) of every vertex, according to specified math function.

Let's say I want to use sin(x). Then, I want to:

1. Convert object to an editable poly.
2. In loop, get z coordinate of each subsequent vertex.
3. Move it up or down so the z value changes to sin(z).

Now, imagine triangle as half of square, placed vertically.
I want to run this script so the triangle gets a "y=sin(x)"-shaped edge, instead of "y=x"-shaped one

Here is the code:

h = $.height
obj = convertToPoly($)
subobjectlevel = 1

for i in 1 to obj.numVerts do
(
	pos=polyop.getVert obj i
	z=pos.z
	z/=h
	z*=pi
	z=sin(z)+1
	z/=2
	z*=h
	z-=pos.z
	u=[0,0,z]
	polyop.MoveVert obj i u
)
subobjectlevel = 0

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EDIT:

Well, as soon as i have found Sword of Apollo's Function Sculptor (click here to see it), everything I wanted to achieve became really easy.

This script is the best solution I could imagine. Of course, it would be good if some minor tweaks were applied just to improve usage experience, but it works perfectly for me.

Everything I have to do now is to play with some math parameters for sin(x), for example:

sin(30*x-pi/2), so it suits perfectly for what I am actually doing.

Again, thanks to everybody who looked into this topic and wanted to help.