#include<GL/glut.h>#define drawOneLine(x1,y1,x2,y2) glBegin(GL_LINES);\ glVertex2f((x1),(y1)); glVertex2f((x2),(y2)); glEnd()void init(){ glClearColor(0.0, 0.0, 0.0, 0.0); glShadeModel(GL_FLAT);}void display(void){ int i; glClear(GL_COLOR_BUFFER_BIT); glColor3f(1.0, 1.0, 1.0); glEnable(GL_LINE Read More