[Octave-bug-tracker] [bug #58429] Export of plotted circles to SVG could use SVG circle primitive

[Rik]

Follow-up Comment #4, bug #58429 (project octave):

If it helps, the marker drawing code for 'o' is in gl-render.cc at line 4676. 
Reproduced below.


case 'o':
  {
    int div = static_cast<int> (M_PI * sz / 4);
    if (! (div % 2))
      div += 1;               // ensure odd number for left/right symmetry
    div = std::max (div, 5);  // ensure at least a few vertices are drawn
    double ang_step = M_PI / div;

    m_glfcns.glBegin (filled ? GL_POLYGON : GL_LINE_LOOP);
    for (double ang = 0; ang < 2*M_PI; ang += ang_step)
      m_glfcns.glVertex2d (sz/2*cos (ang), sz/2*sin (ang));
    m_glfcns.glEnd ();
  }


 


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