center

🎨 3D 预览 — 居中几何体

@StartRule
Lot --> primitiveCube(6, 2, 4)
        center(xz)
        extrude(5)
        comp(f) { top: Roof | side: Wall }
Roof --> color(0.5, 0.25, 0.15)
Wall --> color(0.75, 0.72, 0.68)