Raindrops on a Window Pane

This scene depicts rain droplets clinging to and sliding down a glass window pane, viewed against a blurred night-time city skyline. Droplets are rendered as instanced, slightly refractive spheres that stretch and pause as they slide, mimicking surface tension on real glass. Behind the pane, softly glowing "bokeh" sprites and fogged silhouette buildings simulate an out-of-focus exterior, while fast vertical point streaks represent falling rain lit by distant city lights.

• Up to hundreds of instanced droplet meshes slide down the pane with randomized pause-and-release timing
• Exterior city lights are simulated with additive-blended bokeh sprites for a defocused, out-of-focus look
• Thousands of point streaks simulate falling rain outside the glass
• Fog and low-detail city geometry reinforce depth-of-field blur without a real post-process shader
• Camera auto-drifts slowly when idle; OrbitControls let you look around manually