membuat garis putus OpenGL

Berikut ini adalah program OpenGL untuk membuat garis putus-putus.

Praktikum 2 grafika :

#include <windows.h>

#include <stdlib.h>

#include <string.h>

#include <stdarg.h>

#include <glut.h>

#define drawOneLine(x1,y1,x2,y2) glBegin(GL_LINES); glVertex2f ((x1),(y1)); glVertex2f ((x2),(y2)); glEnd();

void init(void)

{

glClearColor (0.0, 0.0, 0.0, 0.0);

glShadeModel (GL_FLAT);

}

void display (void)

{

    

int i;

glClear (GL_COLOR_BUFFER_BIT);/* select white for all lines */

glColor3f (1.0, 1.0, 1.0);

glEnable (GL_LINE_STIPPLE);

//glLineStipple (1,0x0101);/*dotted*/

//drawOneLine (50.0, 125.0, 150.0, 125.0);

glLineStipple (1, 0x00FF); /*dotted*/

drawOneLine (50.0, 10.0, 200.0, 50.0);

glLineStipple (1, 0x00FF); /* dashed */

drawOneLine (50.0, 200.0, 200.0, 90.0);

glLineStipple (1, 0x00FF); /* dashed */

drawOneLine (50.0, 90.0, 200.0, 90.0);

//glLineStipple (1, 0x1C47); /* dash/dot/dash */

//drawOneLine (250.0, 125.0, 350.0, 125.0);

glDisable (GL_LINE_STIPPLE);

glFlush ();

}

void reshape (int w, int h)

{

     glViewport (0, 0, (GLsizei) w, (GLsizei) 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;

        

         }