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| geometry | examples of manifestations | parameters | |
|---|---|---|---|
| points | x/y/z coordinates | ||
| curve geometry |
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| surface geometry (NURBS) |
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| solids |
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| meshes / polygons |
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Boundary representation (BREP)
| geometric entities | topological |
|---|---|
| point | vertex |
| line | edge |
| surface | face |
Rhino Interface
Setup:
- Turn on Point Snap (End, Midpoint, Center, Intersection, Perpendicular, Quadrant) & Grid Snap
- Turn on Gumball
- Turn on shading for the perspective window (shaded or ghosted)
- Tip: Enter or Space to enter commands
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Exercise 2 - Rhino: transform and extrude, using gumball
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Grasshopper - the parametric glass
Premise: design a definition to control height, top&bottom radius and wall thickness through sliders.
- set basepoint in rhino and connect to grasshopper
- create sliders for heith, top&bottom radius and wall thickness
- move (copy) the centerpoints for the all circles but the lower outer radius
- subtract the wallthickness for the inner circles
- create a loft (mind the order)
loft type (O) set to "straigt" - create the bottom inner and outer surface with "boundary surface"
- join all surfaces
- "bake"
Grasshopper - working with attractors
Premise: Control the diameter of circles by the proximity to an object
- Create a "rectangular" grid
- control Size and Extend through sliders
- create circles on the intersetion points (p)
- control the radius of the circles through the distance to a point set in rhino
use a division or mapping to adjust the scale
Grasshopper
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- deconstruct a mesh
- connect a mesh from rhino
- "deconstruct mesh"
- "deconstruct face"
- read out the edges through "list items"