#476Wind Vane and Anemometer

A meteorological instrument panel drawn entirely in-shader. A procedural wind field is visualized as dashed streamlines that flow across the frame — contours of a stream function, with the dashes advecting along the velocity potential so the lines genuinely stream. A wind vane swings its arrow to point into the wind while a four-cup anemometer spins at a rate that tracks the wind speed, an arc gauge reading out its RPM. The mouse sets the wind direction, scroll sets its speed, and a press throws in gusts.