Vase and bowl openscad generator

Vase and bowl generator.
you can change parameters
accuracy =1; // resolution in mm
vase = 1; // 1 for vase, 0 for candybowl
qty = 10; // quantity of protrusion
tw = 60; // angle of twist
pvv = 0.82; // part of sinusoid vertical 0.3-1.0
pt = 1.5; // part of sinusoid for twist or 0 for linear
kv = 0.6; // koeff vertical < 1.0
kp = 0.06; // koeff protrusion < 0.5
and get own vase or bowl.
or you can change
function fz(z) = d/2+sin(pv*180*z/h)*k