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Design a parametric cup. Create a definition to control height, top and bottom radius and wall thickness through sliders.

1. set Set basepoint in rhino and connect to grasshopper
2. create Create sliders for height, top and bottom radius and wall thickness
3. move Move (copy) the centre points for all circles, except the lower outer radius
4. subtract Subtract the wall thickness for the inner circles
5. create Create a loft (mind the order)
   loft type (O) set to "straight"
6. create Create the bottom inner and outer surface with "boundary surface"
7. join Join all surfaces
8. "bake"

Exercise B: Working with attractors

Premise: Control the diameter of circles by the proximity to an object

1.  Create Create a "rectangular" grid
2. control Control Size and Extend through sliders
3. create Create circles on the intersection points (p)
4. control Control the radius of the circles through the distance to a point set in rhino
   use a division or mapping to adjust the scale

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