[general]
name = Trumpet1;
comments = Gabriel's horn, hyperbolic funnel;
a1_min = 0;
a1_max = 1;
a1_steps = 50;
a2_min = 0;
a2_max = 360;
a2_steps = 50;

[param]
name = a;
title = Radius;
default = 1;
min = 0.01;
max = 2;

[formula]
u = max(0.1,A1);
X = 1 / u;
Y = a * u * cos(A2);
Z = a * u * sin(A2);

[preset]
name = default;
a = 1;
a1_min = 0;
a1_max = 1;
a1_steps = 50;
a2_min = 0;
a2_max = 360;
a2_steps = 50;