void Visit(const AirspaceCircle& airspace) { RasterPoint screen_center = projection.GeoToScreen(airspace.GetCenter()); unsigned screen_radius = projection.GeoToScreenDistance(airspace.GetRadius()); GLEnable stencil(GL_STENCIL_TEST); { GLEnable blend(GL_BLEND); setup_interior(airspace); if (m_warnings.is_warning(airspace) || m_warnings.is_inside(airspace) || airspace_look.thick_pen.GetWidth() >= 2 * screen_radius) { // fill whole circle canvas.circle(screen_center.x, screen_center.y, screen_radius); } else { // draw a ring inside the circle Color color = airspace_look.colors[settings.colours[airspace.GetType()]]; Pen pen_donut(airspace_look.thick_pen.GetWidth() / 2, color.WithAlpha(90)); canvas.SelectHollowBrush(); canvas.Select(pen_donut); canvas.circle(screen_center.x, screen_center.y, screen_radius - airspace_look.thick_pen.GetWidth() / 4); } } // draw outline setup_outline(airspace); canvas.circle(screen_center.x, screen_center.y, screen_radius); }
void VisitCircle(const AirspaceCircle &airspace) { RasterPoint screen_center = projection.GeoToScreen(airspace.GetCenter()); unsigned screen_radius = projection.GeoToScreenDistance(airspace.GetRadius()); GLEnable stencil(GL_STENCIL_TEST); if (!warning_manager.IsAcked(airspace) && settings.classes[airspace.GetType()].fill_mode != AirspaceClassRendererSettings::FillMode::NONE) { GLEnable blend(GL_BLEND); SetupInterior(airspace); if (warning_manager.HasWarning(airspace) || warning_manager.IsInside(airspace) || look.thick_pen.GetWidth() >= 2 * screen_radius || settings.classes[airspace.GetType()].fill_mode == AirspaceClassRendererSettings::FillMode::ALL) { // fill whole circle canvas.DrawCircle(screen_center.x, screen_center.y, screen_radius); } else { // draw a ring inside the circle Color color = settings.classes[airspace.GetType()].fill_color; Pen pen_donut(look.thick_pen.GetWidth() / 2, color.WithAlpha(90)); canvas.SelectHollowBrush(); canvas.Select(pen_donut); canvas.DrawCircle(screen_center.x, screen_center.y, screen_radius - look.thick_pen.GetWidth() / 4); } } // draw outline if (SetupOutline(airspace)) canvas.DrawCircle(screen_center.x, screen_center.y, screen_radius); }