GL_TRIANGLE_STRIP

Hi everyone,

I am drawing some vertices around a primitive using glDrawArrays like:

glDrawArrays(GL_TRIANGLE_STRIP, 0, verticesArray);

However, the primitive drawn is very jagged and looks terrible. I tried
enabling anti-aliasing, but that does not help. I tried increasing the
number of points in the vertices array, but it still does not make a
difference. I was wondering if someone can help me with it. Here is
some sample code:

#define M_PI 3.1415926535897932f
int GUI_div = 20;

divinc = M_PI/GUI_div;

        // calculate coords
        for(i = 0, angle = 0.0; angle < M_PI+.01; i++, angle += divinc)
        {
                // inside
                pos[i][0] = (float)sin(angle) + button->width*0.5f;
                pos[GUI_div+GUI_div+1-i][0] = -pos[i][0];
                pos[GUI_div+GUI_div+1-i][1] = pos[i][1] = (float)cos(angle);
                pos[GUI_div+GUI_div+1-i][2] = pos[i][2] = 0.0f;
        }

    glEnable(GL_LINE_SMOOTH);
        glBegin(GL_TRIANGLE_FAN);
        for(i=0; i<GUI_div+GUI_div+2; i++)
        {
                glTexCoord2fv(tpos[i]);
                glVertex3fv(pos[i]);
        }
        glEnd();
    glDisable(GL_LINE_SMOOTH);

increasing the GUI_DIV parameter does not seem to have any effect,
neither does the anti-aliasing command...

Would appreciate any help :)

Thanks

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