#include// Windows的头文件 #include // OpenGL32库的头文件 #include // GLu32库的头文件 #include // GLaux库的头文件 #include // Glut库头文件 #include #include #include using namespace std; #pragma comment( lib, "opengl32.lib") // OpenGL32连接库 #pragma comment( lib, "glu32.lib") // GLu32连接库 #pragma comment( lib, "glaux.lib") // GLaux连接库 #pragma comment( lib, "glut.lib") // Glut链接库 int screenWidth=640; int screenHeight=480; void myInit() { glClearColor(1.0,1.0,1.0,0.0); //设置背景颜色为亮白 glColor3f(0.0f,0.0f,0.0f); //设置绘图颜色为黑色 glPointSize(4.0); //设置点的大小为4*4像素 glMatrixMode(GL_PROJECTION); //设置合适的矩阵 glLoadIdentity(); gluOrtho2D(0.0,screenWidth,0.0,screenHeight); } void drawLine(GLint x1,GLint y1,GLint x2,GLint y2) { glBegin(GL_LINES); glVertex2i(x1,y1); glVertex2i(x2,y2); glEnd(); } void myDisplay() { fstream inStream; inStream.open("dino.txt",ios::in); if(inStream.fail()) return; glClear(GL_COLOR_BUFFER_BIT); GLint numpolys,numLines,x,y; inStream>>numpolys; for(int j=0;j >numLines; glBegin(GL_LINE_STRIP); for(int i=0;i >x>>y; glVertex2i(x,y); } glEnd(); } glFlush(); inStream.close(); } void main(int argc, char **argv) { glutInit(&argc,argv); //初始化工具包 glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);//设置显示模式 glutInitWindowSize(640,480); //设置窗口大小 glutInitWindowPosition(100,150); //设置窗口在屏幕上的位置 glutCreateWindow("my first attempt"); //打开屏幕窗口 //注册回调函数 glutDisplayFunc(myDisplay); myInit(); glutMainLoop(); //进入循环 }
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