Thread by @ferjerez3d

I've created a 'Random Marble Run' Generator for #3dprinting using #processing ( @ProcessingOrg ). Will try to explain how it's made in this thread below. 👇
I hope this technique is useful or inspiring for some programmer out there. "random space filling curves"

@ProcessingOrg Random Space Filling Curves is the key. The method is:
First: draw a maze into a grid (using a recursive bactracker for this)

@ProcessingOrg Second: Using some sort of 'bitmasking' calculate a value for each cell depending of the corners. From upper left counting clockwise values of corners are 1,2,4,8
Each possible value drives into one specific direction.
Example: 2,6 and 14 always goes up/north

@ProcessingOrg Step 3: Following the directions calculated previously you will get a path that travels by all the grid.

@ProcessingOrg Step 4: Now we have a 'loop track' travelling by all grid cells.
Let's jump into 3D!
Follow the track and scale up the Z value (go up!)

@ProcessingOrg Step 5: Replace these blocks with 3D models for a nice marble run!

@ProcessingOrg We also need a 'screw'

Printing.....

And testing!!!! It works!!!😃

Need to say that it works for any size

No need to be 'squared'

Another print test

Seems like Twitter is blocking OneDrive links 🤦‍♂️.....let's try Google Drive.

Two marble-tracks ready to print here--> drive.google.com/drive/folders/…

This damn thing is addictive