计算机图形学试验 画金刚石 把一个圆周等分成 n份，然后每两点之间连线。当n取奇数时，该图案可一笔连续绘成，即用MoveTo函数确定一个当前点，然后连续用LineTo函数连点成线。 -Computer graphics test painting diamond, such as a circle divided into n parts, and then the connection between every two points. When n is odd, the patte

声明一个Shape抽象类，在此基础上派生出Rectangle和Circle类，二者都有GetArea（）和GetPerim（）函数，GetArea用来计算对象的面积，GetPerim用来计算对象的周长。-Declare an abstract class Shape, on this basis, derived classes Rectangle and Circle, the two have GetArea () and GetPerim () function, GetArea used

- High speed display connection straight to SPI port and pins. - A full 5 x 7 pixel font set and character routines for display. - A numerical and symbol 6 x 16 font set with a colon especially for clocks and other fun large displays. - Special