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1、实验一OPENGL中的二维编程姓名叶传军学号E11414103得分一.实验题目1练习基本的openGL编程方法。（1）配置openGL，能在VC下通过编译。（2）阅读并运行simple.c，熟悉最简单的openGL程序结构。（3）阅读并运行改进的simple2.c，掌握openGL程序的通用结构。给simple2.c中的函数加注释。可尝试做如下修改：（a）改变窗口的位置，尺寸，标题；（b）改变窗口背景色和矩形颜色；（c）改变矩形的尺寸和其在窗口中的位置，还可以只显示矩形的一部分（通过设置正投影参数和矩形四个顶点的坐标来完成）；2发挥想象，编程实现在窗口中绘制若干图形及设置它们的属性，并回答问题
2、：（1）绘制若干个点，分别设置每个点的颜色和大小。思考题1：glPointSize()可以放在glBegin()和glEnd()函数对之间吗？（2）绘制若干条直线段。设置线段的颜色，线型和线宽。思考题1：以下命令会显示什么样的线段?glEnable(GL_LINE_STIPPLE)；glColor3f(0.0,1.0,0.0);glLineWidth(2.0);glLineStipple(3,0xcccc);glDisable(GL_LINE_STIPPLE)；思考题2：以下命令会显示什么样的线段?glShadeModel(GL_SMOOTH);glBegin(GL_LINES);glColo
3、r3f(1.0,0.0,0.0);glVertex2f(0.0,0.5);glColor3f(0.0,0.0,1.0);glVertex2f(0.5,-0.5);glEnd();将glShadeModel(GL_SMOOTH)改为glShadeModel(GL_FLAT)，其余命令不变，结果又会如何？（3）绘制若干个多边形。设置多边形的颜色，显示模式，隐藏某些边。思考题1：以下命令会显示什么样的多边形?glShadeModel(GL_SMOOTH);glBegin(GL_POLYGON);glColor3f(1.0,0.0,0.0);glVertex2f(-0.5,-0.5);glColor3
4、f(0.0,1.0,0.0);glVertex2f(-0.5,0.5);glColor3f(0.0,0.0,1.0);glVertex2f(0.5,0.5);glColor3f(1.0,1.0,0.0);glVertex2f(0.5,-0.5);glEnd();将glShadeModel(GL_SMOOTH)改为glShadeModel(GL_FLAT)，其余命令不变，结果又会如何？将glBegin(GL_POLYGON)改为glBegin(GL_QUADS)，分别尝试在SMOOTH和FLAT模式下的结果。思考题2：以下程序段分别会显示什么样的多边形?（a）glPolygonMode(GL_F
5、RONT_AND_BACK,GL_FILL);glColor3f(1.0,0.0,0.0);glBegin(GL_POLYGON);glVertex2f(-0.5,-0.5);glVertex2f(-0.5,0.5);glVertex2f(0.5,0.5);glVertex2f(0.5,-0.5);glEnd();（b）glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);glColor3f(1.0,1.0,0.0);glBegin(GL_POLYGON);glVertex2f(-0.5,-0.5);glVertex2f(-0.5,0.5);glVertex2f(0
6、.5,0.5);glVertex2f(0.5,-0.5);glEnd();（c）glPolygonMode(GL_FRONT_AND_BACK,GL_POINT);glColor3f(1.0,1.0,0.0);glBegin(GL_POLYGON);glVertex2f(-0.5,-0.5);glVertex2f(-0.5,0.5);glVertex2f(0.5,0.5);glVertex2f(0.5,-0.5);glEnd();思考题3：下面多边形的哪些边不可见?glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);glColor3f(1.0,1.0,0.0);g
7、lBegin(GL_POLYGON);glVertex2f(-0.5,-0.5);glEdgeFlag(GL_FALSE);glVertex2f(-0.5,0.5);glEdgeFlag(GL_TRUE);glVertex2f(0.5,0.5);glVertex2f(0.5,-0.5);glEnd();4.公司某年度各月产量分别为：320,475,436,754,585,619,788,500,8
