Impasto Relief Drawing: 3D Ink & Gravity

The 2D original for this pairing describes "manipulating forces like gravity and friction to create realistic-looking drawings" — a promise its flat canvas never actually implements. This 3D companion builds that mechanic for real: paint on a freely orbit-able easel where each stroke is a genuine extruded 3D ribbon, bulging off the surface by an amount tied to how slowly you drag (more pressure, more relief), then integrates a simple gravity-and-viscosity model on the still-wet paint so heavier, low-viscosity strokes visibly sag and drip down the canvas before drying and freezing in place. Switch between Draw mode (mouse/touch drag paints) and Orbit mode (drag rotates the camera, scroll zooms) to inspect the relief from any angle — something no flat 2D sketchpad can show.