Gravity Simulator

Runs in a browser. Just serve index.html and associated css and js.

Uses npm for eslint.

Screenshots

TODO

• Selection Box

• Enhancement: Create Vector class and refactor to use

• Feature: Object List

• Feature: Object Detail

• Enhancement: Handle pointerleave or other mechanism when window loses focus

• Enhancement: Calculate Work as FxD as measure of energy flux

• Feature: Automatically slow time when energy flux is greater

• Enhancement: Add z-axis (Initially nothing changes, z = 0)

• Feature: Isometric 3d View

• Feature: Grid

• Feature: Polar Coordinates

• Feature: Cylindrical Coordinates

• Feature: Spherical Coordinates

• Feature: Camera Velocity Display

• Enhancement: World State Snapshots

• Feature: List / Save / Load World States

• Feature: Left Button Panning

• Feature: Middle Button Pause

• Feature: Parameter Slider (Invisible, mouse/touch drag)

• Enhancement: Zoom Easing

• Feature: 2-touch Pan & Zoom Either continuous zoom, or discrete with animation of bounding box proposed changes

• Feature: Multi-touch Mass Create

• Feature: Camera Rotation

  • 2-touch Rotation
  • Spinning Frame

• Feature: Undo

  • Undo "Clear Traces" Action
  • In general have a user action history
  • Point-in-time restoral of world state (Marked points, i.e. Snapshots)

• Feature: Time Control: Reverse Time

• Feature: Lossy Rescaling To Widen Zoom (Handling overflow/underflow)

• Enhancement: Track farthest reaches, min/max in each dimension (x, y)

• Task: Verify stationary pointer leads to zero pointer velocity