Isosurface Spiral Function

[rurik]

I tried this one, created parameters for n, r1, r2 and o but I don't get the same shape as you, mine looks like a tube that does not fully revolve around itself.

I attached a screenshot...

Thanks!

Alex

This one generates a spiral. However, the crossections don't sweep properly with the curve (always parallel to one axis) (Apparently this is a hard mathematical problem to solve)

pow($X-ch("r2")*sin(ch("o")*$Z),ch("n")) +

pow($Y-ch("r2")*cos(ch("o")*$Z),ch("n"))-

pow(ch("r1"),ch("n"))

with n=2, r1= 0.2, r2 = 0.4

[Macha]

I tried this one, created parameters for n, r1, r2 and o but I don't get the same shape as you, mine looks like a tube that does not fully revolve around itself.

I attached a screenshot...

Thanks!

Alex

Haven't got Houdini running on this machine but I think you missed setting the o parameter. That defines the spiraliniess. Set it to something like 360.

[edward]

Adding a footnote here. To create just a regular spiral curve, go to the docs: http://www.sidefx.com/docs/houdini10.0/ref/expression_cookbook (look for "spiral")

[kare]

Adding a footnote here. To create just a regular spiral curve, go to the docs: http://www.sidefx.com/docs/houdini10.0/ref/expression_cookbook (look for "spiral")

Have any tried lorenz attractor or strange attractors in implicit function

http://www.stsci.edu/~lbradley/seminar/attractors.html