#include <windows.h>    // Windows的头文件

#include <gl\gl.h>        // OpenGL32库的头文件#include <gl\glu.h>        // GLu32库的头文件#include <gl\glaux.h>    // GLaux库的头文件#include <gl\glut.h>    // Glut库头文件

#include <math.h>#include <iostream>#include <fstream>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<numpolys;j++)    {        inStream>>numLines;        glBegin(GL_LINE_STRIP);for(int i=0;i<numLines;i++)        {            inStream>>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}