Snowfall

What it is

Snow falling in three depths. Near flakes are big, soft and fast, middle ones medium, far ones tiny and slow, so the scene has depth; each drifts sideways on its own slow sine and the near flakes are slightly blurred as if out of focus. Every flake falls a whole number of screen heights per loop, so the loop is exact. It draws over whatever is on the canvas. Choose the number of flakes, the wind, the sky colours and the seed.

Reuse it in your own idea

• Winter title: Winter night.
• Storm: Blizzard.
• Soft greeting: Gentle, dusk.

Which part is reusable

src/snowfall.js is the ingredient your AI reuses. demo.js is only the example scene around it, and uses the demo harness only for the demo.

Good to know

• Flakes do not collide or settle; they leave the bottom and re-enter at the top.
• The backdrop in the demo is not part of the reusable code.