CODEWITHSUNDEEP
opengl
Vivek Murali
Vivek Murali

Reputation: 33

How do i introduce sufficient delay while using glutPostRedisplay() function in OpenGL?

void display(void)

{

     char text1[10],text2[10];
     int i;
     glPointSize(2.0);
     glClear(GL_COLOR_BUFFER_BIT);
      circle_draw(x1center,y1center,radius1);
      y1center-=5;
      while(y1center>=100)
      {
          glutPostRedisplay();
          y1center-=5;
      }
      glFlush();

}

I want to move the circle along the vertical axis. But while using the glutPostRedisplay() function I can only see the initial and final positions of the circle. The transition is too fast to see.

Upvotes: 0

Views: 3265

Answers (1)

Jerry Coffin
Jerry Coffin

Reputation: 490148

void display(void)
{
     char text1[10],text2[10];
     int i;
     glPointSize(2.0);
     glClear(GL_COLOR_BUFFER_BIT);
     circle_draw(x1center,y1center,radius1);
     glFlush();
}

void update(int) { 
    if (y1center > 100) {
        y1center -= 5;
        glutPostRedisplay();
        glutTimerFunc(100, update, 0);
    }
}

int main() {
// ...

    glutTimerFunc(100, update, 0);

// ...
}

Upvotes: 2

Related Questions