OpenGL简单画线程序

#include <GL/glut.h>

void display(){

glClearColor (0.0, 0.0, 0.0, 0.0);

glClear (GL_COLOR_BUFFER_BIT);

glLineWidth(2);//设置线段宽度

glBegin(GL_LINES);

glColor3f(1.0,0.0,0.0);

glVertex2f(0.8,1); //定点坐标范围

glVertex2f(0,-1);

glEnd();

glFlush();

}

int main(int argc, char *argv[])

{

glutInit(&argc, argv);

glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);

glutCreateWindow("A_Line");

glutDisplayFunc(display);

glutMainLoop();

}