An helix on a 'tridimensional epicycloïdal' pseudo-torus [Une hélice sur un pseudo-tore 'épicycloïdal tridimensionnel'].




See the 'tridimensional epicycloïdal' pseudo-torus:



See the helix:



See the definition of this helix in the {u,v} plane:




[See the equations of this 'tridimensional epicycloïdal' pseudo-torus]

Here are the values of the parameters used: 
                    B=+9.0 C=+1.0 D=+4.0 E=+9.0
                    F=+9.0 G=+1.0 H=+4.0 I=+9.0
                    M=+5.0 N=+1.0 O=+7.0 P=+3.0


See some related pictures (possibly including this one):

 



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