[back]  3.28. Henneberg's Surface 
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The Henneberg's surface [ 3,8,11 ] is represented by the following equations.
x = 2 cos(v) sinh(u)  0.667 cos(3 v) sinh(3 u) 
399 

y = 2 sin(v) sinh(u) + 0.667 sin(3 v) sinh(3 u) 
3100 

z = 2 cos(2v) cosh(2u) 
3101 
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 [1, 1] 

v is an element from the number set [pi/2, pi/2] 
Henneberg's surface is a halfopen figure, so the definition range of u can be changed with the plugin.
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