一款C语言编写的多边形制作Winform程序，可画任意多边形-A C language the polygon making the Winform procedures, can draw an arbitrary polygon

实验内容：实现一个多边形区域扫描转换，并允许用户任意输入多边形的边数和顶点坐标，不使用OpenGL画多边形方法, 使用windows下的SetPixel函数实现。-Experiment: the area of ​ ​ a polygon scan conversion, and allows any user input the number of sides of the polygon and vertex coordinates, do not use the the

采用opengl技术画多边形，实现图形的旋转缩小-Opengl polygon using painting techniques to achieve the rotation of graphics narrow