Thanks.

Excuse I has not absolutely understood? Well??? Badly???

Has added a script. Now it turns a spiral to the left, in the right.
If the distance = 0 that distance is defined by means of a mouse.

English version. http://www.stroyka-r.ru/images/images/zerkalo_eng2.zip

Has changed a script, now he draws a ladder.
If to specify a spiral corner (an example 30)
Then: the first mouse cliques - the beginning and the spiral centre.
The mouse second cliques - spiral height.
Distance = to an interval

The script itself will define an interval from the set parametres (Distance, Height)
English version. http://www.stroyka-r.ru/images/images/zerkalo_eng1.zip

Русскую версию можно скачать с сайта указанного выше.

I do not have this script - I did not know. And now I write a script ladders (spiral)
There is such script???

For a basis the script is taken (Mirror3_1_.0.rb)
The scratch - moves, reflects and copies the allocated object. With it it is easy to draw a ladder
(It is enough to draw the first step and to specify a direction) to create mirror reflexion,
To move on the specified distance. Allocate object, press the right button of a mouse,
Choose "to MOVE MIRROR REFLECTION"

zerkalo_eng.rb