virtual void OnPaint(Canvas &canvas) override {
canvas.ClearWhite();
const GeoPoint a(Angle::Degrees(7.70722),
Angle::Degrees(51.052));
const GeoPoint b(Angle::Degrees(11.5228),
Angle::Degrees(50.3972));
WindowProjection projection;
projection.SetScreenOrigin(canvas.GetWidth() / 2, canvas.GetHeight() / 2);
projection.SetGeoLocation(a.Middle(b));
projection.SetScreenSize(canvas.GetSize());
projection.SetScaleFromRadius(fixed(400000));
projection.UpdateScreenBounds();
canvas.SelectBlackPen();
canvas.SelectHollowBrush();
RasterPoint pa = projection.GeoToScreen(a);
canvas.DrawCircle(pa.x, pa.y, 4);
RasterPoint pb = projection.GeoToScreen(b);
canvas.DrawCircle(pb.x, pb.y, 4);
RenderFAISector(canvas, projection, a, b, false, settings);
}
void
Airspaces::VisitIntersecting(const GeoPoint &loc, const GeoPoint &end,
AirspaceIntersectionVisitor& visitor) const
{
if (empty()) return; // nothing to do
FlatRay ray(task_projection.project(loc), task_projection.project(end));
const GeoPoint c = loc.Middle(end);
Airspace bb_target(c, task_projection);
int mrange = task_projection.project_range(c, loc.Distance(end) / 2);
IntersectingAirspaceVisitorAdapter adapter(loc, end, ray, visitor);
airspace_tree.visit_within_range(bb_target, -mrange, adapter);
#ifdef INSTRUMENT_TASK
n_queries++;
#endif
}
void
Airspaces::VisitIntersecting(const GeoPoint &loc, const GeoPoint &end,
AirspaceIntersectionVisitor& visitor) const
{
if (empty())
// nothing to do
return;
const GeoPoint c = loc.Middle(end);
Airspace bb_target(c, task_projection);
int projected_range = task_projection.ProjectRangeInteger(c, loc.Distance(end) / 2);
IntersectingAirspaceVisitorAdapter adapter(loc, end, task_projection, visitor);
airspace_tree.visit_within_range(bb_target, -projected_range, adapter);
#ifdef INSTRUMENT_TASK
n_queries++;
#endif
}
