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);
}
