algorithmic modeling for Rhino

June-Hao Hou
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Graduate Institute of Architecture, National Chiao Tung University
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Parametric Surface using Variable Expression

If you know parametric surface well -- or to be more specific, you know how to construct 3D surfaces using parametric equations -- it is a smooth transition from mathematical tools (such as Mathcad or Mathematica) to Grasshopper. In Mathcad, the equation for a parametric surface is:

For those who love spirograph may find it familiar. In Grasshopper, the definition looks like this:…


Posted on May 15, 2009 at 11:00pm — 12 Comments

Nice facelift

Great to see Grasshopper website got a new face. I am glad to see the addition of social tools -- which might bring up more interactions among users. BTW, I have just started a new blog for the Chinese tutorials for GH here:

Posted on May 14, 2009 at 3:30am

Comment Wall (4 comments)

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At 8:04am on October 10, 2016, Arpan Bakshi said…

GhPython Workshop coming up this month. Tool developer Chris Mackey is teaching a live webinar titled - Making Your Own Python Components. More information and registration at

At 9:54am on May 17, 2009, June-Hao Hou said…
There is a download link for the definition file under the screenshot.
At 9:12am on May 17, 2009, Karl-Johan Sellberg said…
...also great with the screendump, but it´s just a little hard to read because of the resolution.
At 9:09am on May 17, 2009, Karl-Johan Sellberg said…
Nice to be here. Glad to see the english explanation for the spirograph!





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