Parametric Vase

Parametric vase for openscad drawing.vase hight = hight_minus + hight_plushight_minus=25; // -Zhight_plus=15; // +Zstep=.2; // friezedegree=1.5;wall=1; // wall thicknessradius=30; // ~=> bigger then hight_minusbow= 0; //1= concave 0= convex