HW2: 3D Point Clouds

• point_clouds.py, submitted on Canvas.

Note that it's important to always use exactly the specified filename when handing in work for a CS class. (Canvas may automatically append a number to your filename; that's okay.)

Download the starter code, point_clouds.py. This Python script has a number of TODO comments in it; your task will be to do what they say, one by one, and remove each TODO as you complete it. (You'll also need gfx_helper_script.py and gfx_helper_plotting.py — download fresh copies of 'em!)

1. Change the body of cubeVerts() to match its docstring. Change the call in main() so that these points appear in octant 1 (+++).
2. Change the body of ellVerts() to match its docstring. Add a call in main() so that the points appear in octant 2 (-++).
3. Change the body of prismVerts() to match its docstring. Add a call in main() so that the points for a pentagonal prism appear in octant 3 (--+).
4. Add another call to prismVerts() in main() so that the points for a cylinder (which, for us, is just a prism with a bunch of faces) appear in octant 4 (+-+).
5. Change the body of sphereVerts() to match its docstring. Add a call in main() so that the points appear in octant 5 (++-).
6. Change the body of torusVerts() to match its docstring. Add a call in main() so that the points appear in octant 6 (-+-).

I will test your functions with many different values of K, including 0. (I won't use negative, fractional, or non-numeric values; don't worry. I'll also only use values of K ≥ 3 for the prism.) Make sure you verify that your functions work correctly in all cases.

The first four things should produce a figure that looks like this — note that in the second picture I'm looking straight down the Z-axis:

And here's a picture of the sphere and torus on their own — note the axis labels:

This assignment is worth 15 points.