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Grasshopper Mini Project

By Emma and Chloe

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01

Catmull Clark Subdivision

Sweep

02

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What is Sweep 1?

  • Sweep is a command that extends a surface around a curve using a section

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What is Sweep 1?

  • Sweep 1 consists of a rail and a section, it extrudes the section curve over the rail curve

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What is Sweep 2?

  • Sweep 2 extrudes the section based on 2 curves

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My Printed Piece

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Pro Tips

  • Rhino is your friend
  • Meshes can solve all of your problems
  • Mesh → Join

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How is Sweep Being Used?

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What is Catmull Clark Subdivision?

  • Catmull-Clark Subdivision is a command that smooths out a mesh. It divides the mesh into quadrilaterals with new vertices, making the object appear smoother depending on the level �
  • mesh/curves: input a geometry as your mesh
  • Level: input a number slider to subdivide your mesh

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How has Catmull Clark Subdivision been used?

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Tutorial

Rhino model:

script:

Print:

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Challenges

  • We originally wanted to research Laplacian Smoothing instead of catmull-clark subdivision, but there was little information and no tutorials
  • Sweep Challenges
    • Capping sweep
    • Getting the exact shape we wanted
    • The sweep breaking at corners

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Thank you!

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Citations

https://bradenkoh.medium.com/how-to-understand-surfaces-in-grasshopper-foundations-in-grasshopper-86e607b8a6d7#:~:text=and%20PlanarSrf%20command.-,Loft,these%20two%20curves%20for%20example.&text=Simply%20select%20two%20curves%20and,generated%20surface%20would%20look%20like.

https://grasshopperdocs.com/components/weaverbird/catmullClarkSubdivision.html