Tree in Pit Grate

Street tree in a paving pit, a single scatter atom: the tree rises from a square cast-iron grate with radial slots that takes exactly one floor tile's place, 1 x 1 m, top at 0.05 m level with the paving, edges flat on +/-0.5 m, trunk centred at x=z=0.

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