creating a curve in rhino from a math function

Hello all,

I have to generate a curve that is specifically defined by a math function in Rhino.

So I got Rhino 4 and added the Grasshopper plugin. Went into the Params and added a slider which goes from 0 to 530 for the y value, and another slider for the x values (0 - 775), then i connected this to a function container and put this in the expression field:

(2/3) * (3.14159265(y) * x)^2 * y

Then I connected the output to a Quick Graph to see what happens. So far it wont evaluate. It says the right hand side in the function is empty???

X will go from 0 to 775 mm and y goes from 0 up to 530.33 mm

???

Replies to This Discussion

Permalink Reply by John Gulliford on February 17, 2012 at 1:07pm

does this help?

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Permalink Reply by Mark Wood on February 17, 2012 at 1:17pm

Well the function seems to evaluate now, the way YOU did it. Now if I can just figure out how to define a curve with those points...

Permalink Reply by John Gulliford on February 17, 2012 at 2:06pm

I would use a VB node, the attached screenshot should give you an idea of passing in two numbers and retrieving a point. You can generate an array of points and pass that into an IntrpCrv Node.

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