[back]  3.38. Kidney Surface 
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The kidney surface [ 8 ] is represented by the following equations.
x = cos(u) (3 cos(v)  cos(3v)) 
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y = sin(u) (3 cos(v)  cos(3 v)) 
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z = 3sin(v)  sin(3v) 
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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 [0, 2 pi] 

v is an element from the number set [pi/2, pi/2] 
Since the Kidney Surface is a closed figure, the definition range must be adhered to exactly, it cannot be changed with the plugin.
The plugin creates an optimized mesh without duplicate points and unconnected polygons.
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