The last of these figures known to Plato is the icosahedron. 柏拉圖知道的最后一個(gè)這種構(gòu)形是正二十面體。
A general algorithm which describes different DGGSs with a uniform framework on an unfolded icosahedron is introduced. 文中論述的算法在二十面體展開圖上建立坐標(biāo)系描述不同剖分產(chǎn)生的多分辨率網(wǎng)格，利用施奈德多面體投影映射到球面。