15-394 Assignment 3: Parametric Surfaces
Instructions
In this assignment you will use Grasshopper to construct two complex
parametric surfaces, and 3D print one of them.
Wavy Arch
Watch
this YouTube
video and follow the steps up until the 10:30 mark. The remaining
steps construct a rectangular base, which we don't want.
In order to export the wavy arch as an STL file you must generate a
closed surface. To do this, combine the two Loft outputs using a Brep
Join component, and then run the result through a Cap Holes component.
Note: in order for this to work you will have to flatten the output of
one of the lofts.
Now modify the design to make it your own. Note that the shape of the
arch is derived from the first Arc component. You can replace this
component with an arbitrary curve drawn in Rhino.
Bake your design and export it as an STL file.
Note: you can export the Brep surface as an STL file, but if you want
to manipulate the mesh in Rhino (e.g., to reduce the vertex count),
you'll need to convert it to a mesh object first. Just run the output
of the Cap Holes component into a Mesh parameter component, and bake
that.
Rocking Chair
Watch
this YouTube
video and follow the steps to make a rocking chair.
Alter the design to make it your own.
Bake your design and export it as an STL file.
Hand-In
Hand in a zip file handin.zip in AutoLab containing the following:
- Your Grasshopper, Rhino, and STL files.
On Piazza, post the picture of your rendering..
Due date: check the class schedule.
Grading (20 pts)
- 14 points: Grasshopper code for a complex shape.
- 4 points: Nicely rendered image. (In past years: 3D printed the shape and removed the support material.)
- 2 points: picture posted to Piazza.
|