COUR OPENGL 3 PAR SKONE

#include <GL/glut.h>
#include <stdlib.h>

/*SKone production*/

#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_STIPPLE);

 glLineStipple(1, 0x0101);//point
 drawOneLine(50.0, 125.0, 150.0, 125.0);
 glLineStipple(1, 0x00FF);//tiret
 drawOneLine(150.0, 125.0, 250.0, 125.0);
 glLineStipple(1, 0x1C47);//tiret/point/tiret
 drawOneLine(250.0, 125.0, 350.0, 125.0);

 glLineStipple(1, 0x0101);
 drawOneLine(50.0, 100.0, 150.0, 100.0);
 glLineStipple(1, 0x00FF);
 drawOneLine(150.0, 100.0, 250.0, 100.0);
 glLineStipple(1, 0x1C47);
 drawOneLine(250.0, 100.0, 350.0, 100.0);

 glLineStipple(1, 0x1C47);
 glBegin(GL_LINE_STRIP);
 for (i = 0; i < 7; i++)
     glVertex2f((50.0 + ((GLfloat) i * 50.0)), 50.0);
 glEnd();

 for (i = 0; i < 6; i++)
     drawOneLine(50.0 + ((GLfloat) i * 50.0), 50.0,
                 50.0 + ((GLfloat)(i + 1) * 50.0), 50.0);
 glLineStipple(5, 0x1C47);
 drawOneLine(50.0, 25.0, 350.0, 25.0);

 glDisable(GL_LINE_STIPPLE);
 glFlush();
}

void reshape(int w, int h)
{
 glViewport(0, 0, w, h);
 glMatrixMode(GL_PROJECTION);
 glLoadIdentity();
 gluOrtho2D(0.0, (GLdouble) w, 0.0, (GLdouble) h);
}

int main(int argc, char** argv)
{
 glutInit(&argc, argv);
 glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
 glutInitWindowSize(400, 150);
 glutInitWindowPosition(100, 100);
 glutCreateWindow(argv[0]);
 init();
 glutDisplayFunc(display);
 glutReshapeFunc(reshape);
 glutMainLoop();
 return 0;
}