Place a circular mask around the pixel in question. Calculate the number of pixels within the circular mask which have similar brightness to the nucleus. These define the USAN. -Place a circular mask around the pixel in question. Calcula

利用Opengl实现模拟原子内部运动的动态显示，此test制作了三个电子绕原子核转动的运动-To Opengl achieve dynamic display analog atomic internal movement, this test produced three electrons around the nucleus rotation movement