new fork: driver (attempt #2) for live programs

Vision:

  • there's an infinite 2D surface to place definitions on, pan around, zoom in and out
  • there's a hierarchical box model for rectangles containing text and graphics that get rendered on the 2D surface, moving things around as needed to avoid overlap.

This commit adds the 2D surface with panning.

Created by  Kartik K. Agaram  on December 16, 2022
VHT5NALKBXY6CZ2AJPLIJ33OSP5X2TF6GTDMIYXVKNIXPZXPAMAAC
Change contents