Semaphore Signal

Upper-quadrant semaphore signal on a tapered post about 7 m tall: an arm knob from 0 (danger, arm horizontal) to 1 (clear, arm raised 45 degrees) moving the red arm with its white stripe and its spectacle plate.

风格：low-poly, flat-shaded vertex colors, no textures, single shared material, so any set of these merges to one draw call; shares palette and scale with its kit