For the coming in-class demonstration, please download this filter generator script. Upon opening, you should see the following components:
A component generating a 2D Gaussian filter, with two sliders controlling size and sigma.
We demonstrated how to generate Fibonacci sequence with for loop and List class. Since Fibonacci sequence is associate with approximation of the golden spiral, it will be a good practice for you to construct the spiral with C# and Grasshopper.
Approximate Golden Spiral with Fibonacci sequence
Appearance of Golden Spiral in nature
Construct Golden Spiral with C# and Grasshopper
Centers of consecutive arcs
Example: Laplacian filter for sharpening edges