用旋转变换的方法生成一个有40个点，内径为100，外径为200的星形图形。 程序运行按键说明：q,w比例变换，a,s旋转变换，j,l,i,k为平移变换。-rotating transform, the formation of a 40 point, the diameter of 100 and 200 the diameter of astrocytes graphics. Running Press : q, w ratio conversion, a, s rotation transformation, j, l, i, k translation transformation.