# 237 : Convex Concave Lampshade / Rhino Grasshopper Advanced Tutorial

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237 : Convex Concave Lampshade / 라이노 그래스호퍼 튜토리얼
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* 라이노+그래스호퍼 스터디 (Naver Cafe ) : cafe.naver.com/rhinograsshopper
#grasshopper #그래스호퍼 #parametric #archtecture #pattern #건축 #파라메트릭 #parametricDesign #라이노그래스호퍼 #Facade #제품디자인 #LunchBox #SubD #rhino7 #rhino7SubD #grasshopper #rhino3d #rhino_grasshopper #parametric_design #parametric_modeling #algorithm_design #industrial_design #computational_design #visual_programming #parametric_architecture #industrialdesign

[@wtk5672]

항상 감사합니다~

[@abcrhino3d]

Thanks for the video.
About if condition
if(x/2=0, x, x+1)
Where
if (condition, value_if_true, value_if_false)
This is interesting exemple for using and clear method for analize.
Respect !

[@sung-munan]

if(x/2=0, x, x+1) >> if(x%2=0, x, x+1) I think " It's Modulus!!

[@stefanguiton]

Great work as always!

[@ikunihong]

thanks so much!

[@user-lf9oi5hb3m]

In Rhino 8 , the number slider doesn’t become either a domain or steps, so then the function doesn’t work. Am i wrong? I would really like to learn

[@lambda3374]

Thank you, not an easy one, is it possible without expression? I'd like to try

[@odonotso3941]

Also curious about this, love the thing GH can do, but it seem already complex to learn, but if you also need to learn maths, it feel too much. Is there a similar program that does have the ability to do the near thing but with a more friendly ux ?

[@supercomputadora]

@@odonotso3941 in most program you can do this.. but you need to know how no use the diference tools and how to combine then

[@AnigmaFaye]

Hello, i cannot find the rebuild surface tool in rhino 7. Do I need a plugin for that? Or is it only available on windows (I'm using Mac). Do i need this at all if i already have an existing surface in rhino?

[@RhinoGrasshopper]

Install LunchBox components : : www.food4rhino.com/en/app/lunchbox

[@AnigmaFaye]

@@RhinoGrasshopper ah okay thank you. Sadly Lunchbox is only available on whindows.

[@xiongxiong2021]

what is {0,2,...}?

[@user-on6ub8vw3i]

hey, when im using the expression i get this red alarm: 1. Parameter "Variable x" has an invalid name. Only use alphanumeric characters and don't start with a number. how should i fix it?

[@RhinoGrasshopper]

When you right-click on variable x, you can rename it. Change 'varivale x' to 'x'.
Or, uncheck the 'Display / Draw Full Names' option in the Grasshopper menu (Alt + F).

[@martinsix8037]

@@RhinoGrasshopper worked for me!

[@user-mq7my4uu5o]

how do you bake this

[@RhinoGrasshopper]

Right-click the last components(SubD from Mesh) and choose "Bake".