[general]
name = Umbrella;
comments = Face Law Preset from EI Modeler.;
a1_min = 0;
a1_max = 360;
a1_steps = 120;
a2_min = 0; 
a2_max = 0.5;
a2_steps = 40;

[param]
name = a;
title = Amplitude;
default = 0.1;
min = 0.01;
max = 1;

[param]
name = b;
title = Frequency;
default = 12;
min = 1;
max = 20;

[formula]
X = (1 * cos(deg(pi * A2)) + 0.5 * a * sin(b * A1)) * cos(A1);
Y = A2;
Z = -(1 * cos(deg(pi * A2)) + 0.5 * a * sin(b * A1)) * sin(A1);


[preset]
name = default;
a = 0.1;
b = 12;
a1_min = 0;
a1_max = 360;
a1_steps = 120;
a2_min = 0; 
a2_max = 0.5;
a2_steps = 40;