#include <gl/glut.h>void myInit(int *argc,char* argv[]) {glutInit(argc,argv); //初始化glutglutInitDisplayMode(GLUT_SINGLE | GLUT_RGB); //設置顯示模式glutInitWindowPosition(0,0);glutInitWindowSize(640,480);glutCreateWindow("hello");glMatrixMode(GL_PROJECTION); //投影矩陣glLoadIdentity(); //轉化為單位矩陣gluOrtho2D(0.0,640.0,0.0,480.0); //設置視圖glClearColor(0.0,0.0,0.0,0.0); //設置背景色glColor3f(1.0,1.0,1.0); //設置繪制顏色 }void myDisplay() {glPointSize(4.0); //設置點的大小glClear(GL_COLOR_BUFFER_BIT); //用背景色擦除背景glBegin(GL_POINT); //畫七個點glVertex2i(289+100,190+100);glVertex2i(320+100,128+100);glVertex2i(239+100,67+100);glVertex2i(194+100,101+100);glVertex2i(129+100,83+100);glVertex2i(75+100,73+100);glVertex2i(74+100,74+100);glVertex2i(20+100,10+100);glEnd();glFlush(); //刷新繪制緩沖 }void mySize(int w,int h) {}void myMouse(int button,int status,int x,int y) {}void myKeyboard(unsigned char key,int x,int y) {}int main(int argc,char* argv[]) {myInit(&argc,argv);glutReshapeFunc(mySize); //指定窗口大小變化響應回調函數glutMouseFunc(myMouse); //指定鼠標事件響應回調函數glutKeyboardFunc(myKeyboard);//指定鍵盤事件響應回調函數glutDisplayFunc(myDisplay);//指定繪制回調函數glutMainLoop();//進入事件循環return 0; }

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