Ive just figured out how tl extrude a polygon on a loop, to create this
spiral pattern. But my next feat is trying to scale each of these polygons,
via a sinewave function of some sort, to create vase shapes, and patterns.
Im new to this program so any help would be appreciated! Heres the code i
have so far.

layers = 30;
layer_height = 7;
z_rot = 10;
amp = 40;

vase();

module vase(){
for(z = [0:1:layers]) {

translate([0, 0, z * layer_height]){
    
    
  rotate (z * -z_rot){
      
      
    linear_extrude(layer_height, twist = z_rot){
        
        
       polygon (points=[
        [10,-25],
        [25,-10],
        [25,10],
        [10,25],
        [-10,25],
        [-25,10],
        [-25,-10],
        [-10,-25]
        ]);
        }
     }
  }

}
}

--
Sent from: http://forum.openscad.org/

There is code for thousands of vases in Thingiverse. Have a look there.
Just a note: linear_extrude() has more parameters like slices and scale.
Try them out.

--
Sent from: http://forum.openscad.org/

Do you want to create a vase such as this?
https://cults3d.com/en/3d-model/art/superformula-vase

http://forum.openscad.org/file/t1825/super.png

I use the path_scaling_sections function (and other modules) of  dotSCAD
https://github.com/JustinSDK/dotSCAD  to create it. You might give it a
try.

http://forum.openscad.org/file/t1825/lib-path_scaling_sections-2.jpg

https://openhome.cc

Sent from: http://forum.openscad.org/