How to use ■
To deform a vector material, you can use the object tool or transform it by expanding, shrinking, rotating, or free transform.
○ Transform With object tool
Change the operation of the tool property to the "expansion rotation" or "free transform" to deform.
You can select only a portion of the line to deform.
You can also change the line width (brush size).
Edit → transform menu "scale, shrink/rotate/free transform"
Press the Ctrl key while zooming in to "zoom in and out" to switch to "free transform" and "Zoom in and out" by pressing the Shift key during free transform.
I think the biggest advantage is that you can switch between transformations without having to fix transformation!
If you ✔ to change the thickness, the displacement shrinks.
Conversely, if you want to make a line of a certain thickness, remove the ✔!
■ Added
Transform along Perth and help when drawing the building of a cylinder!
If there is a line you don't need, select the line in the object tool or delete it, or touch the line you want to erase the whole line > The vector Eraser, then one disappears!
Thank you for your drawing.