gravity doodle
Draw a line, drop marbles, watch them obey. Pen tool lays down solid strokes. Marbles fall via verlet physics, bouncing off your scribbles. Flip gravity and watch them rise. Shake to scatter.
draw mode · 0 strokes · 0 marbles
how the doodle works
- draw — drag to add strokes; marbles bounce off them
- drop — click to drop a marble at the cursor (max 30)
- flip gravity — toggles up vs down
- shake — scatter every marble with random velocity
- physics: verlet integration with closest-point segment collision
- ascii mode: marbles become
o, strokes become#on a coarse grid