腐殖质是一类呈棕至黑色的无固定形状的有机复杂团聚体,它来自于好氧及厌氧条件下,在微生物作用下动植物残体的分解物,通常发生在土壤、堆肥、泥炭坑和水相盆地。从化学角度分析,腐殖质包括植物源的难分解的组分,
I have task to write program allowing users to draw stars, which can differ in size and amount of arms. When I was dealing with basic stars I was doing it with GeneralPath and tables of points :