How to draw a moving function graph with OpenGl?

Question

I\'m using OpenGl to animate a graph that looks something like this:

Here\'s the

Answer 1

You need to sample the function you want to plot.

glBegin(GL_LINE_STRIP);
glVertex2f(0f, 0f);
for (float x = 1f; x < 100f; x += 1f)
  glVertex2f(x, randVarGen());
glVertex2f(100f, 0f);
glEnd();