Home▸Physics & Mechanics▸Spring Pen Drawing: 2D Ink, Friction and Drips

🖋️ Spring Pen Drawing: 2D Ink, Friction and Drips

Interactive 2D drawing model where the pen is a damped mass on a spring chasing your cursor: line width thins with speed, ink runs out, slow strokes pool into drips that slide down a tilted sheet against paper friction, with live speed, width and ink graphs.

Physics & Mechanics2DEasy60 FPS📱 Mobile-adapted⇄ 2D version

Details

CategoryPhysics & Mechanics

RenderingCanvas 2D

DifficultyEasy

Target FPS60

ControlsDrag on the paper to draw; sliders for spring frequency, damping ratio, tip friction, line width, thinning speed, ink wetness, ink consumption, paper tilt and paper roughness, ink colour select, auto-draw toggle, and presets (calligraphy, fine liner, bouncy brush, wet ink, free hand).

drawingspring damperfrictioninkcalligraphyinclined plane

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⚙ Under the hood

drawingspring damperfrictioninkcalligraphyinclined plane

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install