Example #1
0
static void
GetPolygonPoints(std::vector<RasterPoint> &pts,
                 const AirspacePolygon &airspace,
                 const RasterPoint pt, unsigned radius)
{
  GeoBounds bounds = airspace.GetGeoBounds();
  GeoPoint center = bounds.GetCenter();

  fixed geo_heigth = bounds.GetGeoHeight();
  fixed geo_width = bounds.GetGeoWidth();

  fixed geo_size = std::max(geo_heigth, geo_width);

  WindowProjection projection;
  projection.SetScreenSize({radius * 2, radius * 2});
  projection.SetScreenOrigin(pt.x, pt.y);
  projection.SetGeoLocation(center);
  projection.SetScale(fixed(radius * 2) / geo_size);
  projection.SetScreenAngle(Angle::Zero());
  projection.UpdateScreenBounds();

  const SearchPointVector &border = airspace.GetPoints();

  pts.reserve(border.size());
  for (auto it = border.begin(), it_end = border.end(); it != it_end; ++it)
    pts.push_back(projection.GeoToScreen(it->GetLocation()));
}
Example #2
0
void
OZPreviewRenderer::Draw(Canvas &canvas, const ObservationZonePoint &oz,
                        const RasterPoint pt, unsigned radius,
                        const TaskLook &look,
                        const AirspaceRendererSettings &airspace_settings,
                        const AirspaceLook &airspace_look)
{
  fixed scale;
  GeoPoint center;

  if (IsAncientHardware()) {
    scale = fixed(radius) / ((const CylinderZone &)oz).GetRadius();
    center = oz.GetReference();
  } else {
    OZBoundary boundary = oz.GetBoundary();

    GeoBounds bounds = GeoBounds::Invalid();
    for (auto i = boundary.begin(), end = boundary.end(); i != end; ++i)
      bounds.Extend(*i);

    center = bounds.GetCenter();

    fixed geo_width = bounds.GetGeoWidth();
    fixed geo_heigth = bounds.GetGeoHeight();

    scale = fixed(radius * 2) / std::max(geo_heigth, geo_width);
  }

  WindowProjection projection;
  projection.SetScreenSize({radius * 2, radius * 2});
  projection.SetScreenOrigin(pt.x, pt.y);
  projection.SetGeoLocation(center);
  projection.SetScale(scale);
  projection.SetScreenAngle(Angle::Zero());
  projection.UpdateScreenBounds();

  OZRenderer ozv(look, airspace_look, airspace_settings);
  ozv.Draw(canvas, OZRenderer::LAYER_SHADE, projection, oz, 1);
  ozv.Draw(canvas, OZRenderer::LAYER_INACTIVE, projection, oz, 1);
  ozv.Draw(canvas, OZRenderer::LAYER_ACTIVE, projection, oz, 1);
}