Challenge #1:  Showing a 3D image!
	Example with 3d_stack
	3D printer?
	As a stack of 2D images, with scroll or something to go through them
		This is popular
		CASTER example

Can we just make an array of 2D images with Python?
	Sure
	This emphasizes the stack-of-images nature of the situation
	Easy programming with Python!

How about seeing the side of the stack?
	We can do that too
	
Note:  im.show() works, but isn't a really fast way to do this!
	A tkinter canvas or something that recycles the window would be better
	Example:  get_spot from gna
	We can do that, and get clicks, etc.
	NOT 3D accellerated!

3D stack with Vulkan example:
	Kinda lengthy, follow texture path from file to image in 3D
	
A simple 3D algorithm:
	Find the area inside the cell body
	Cell bodies are easy to find
	So logically, this should be easy!

Lab today:
	Count the dots in a cone pedicle
	Might take longer than 2 hours