[back]  3.22. Hyperbolic Helicoid 
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The Hyperbolic Helicoid [ 6 ] is represented by the following equations.
x = sinh(v) cos(a u)/(1+cosh(u) cosh(v)) 
380 

y = sinh(v) sin(a u)/(1+cosh(u) cosh(v)) 
381 

z = cosh(v) sinh(u)/(1+cosh(u) cosh(v)) 
382 
The constant a determines the appearance of the figure.
To represent the area, the two parameters u and v can assume the following values (domain of definition), for example.
u is an element from the set of numbers [4, 4] 

v is an element from the number set [4, 4] 
The Hyperbolic Helicoid is an open figure, so the domain of definition can be changed in the plugin.
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