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 Visit(const AirspacePolygon& airspace) { if (!prepare_polygon(airspace.GetPoints())) return; bool fill_airspace = m_warnings.is_warning(airspace) || m_warnings.is_inside(airspace); GLEnable stencil(GL_STENCIL_TEST); if (!m_warnings.is_acked(airspace)) { if (!fill_airspace) { // set stencil for filling (bit 0) set_fillstencil(); draw_prepared(); } // fill interior without overpainting any previous outlines { setup_interior(airspace, !fill_airspace); GLEnable blend(GL_BLEND); draw_prepared(); } if (!fill_airspace) { // clear fill stencil (bit 0) clear_fillstencil(); draw_prepared(); } } // draw outline setup_outline(airspace); draw_prepared(); }
/********************************************************************** * setup_blob_outlines * * Set up each of the outlines in this blob. **********************************************************************/ void setup_blob_outlines(TBLOB *blob) { TESSLINE *outline; for (outline = blob->outlines; outline; outline = outline->next) { setup_outline(outline); } }
void Visit(const AirspaceCircle& airspace) { RasterPoint screen_center = projection.GeoToScreen(airspace.GetCenter()); unsigned screen_radius = projection.GeoToScreenDistance(airspace.GetRadius()); { GLEnable blend(GL_BLEND); setup_interior(airspace); canvas.circle(screen_center.x, screen_center.y, screen_radius); } // draw outline setup_outline(airspace); canvas.circle(screen_center.x, screen_center.y, screen_radius); }
void Visit(const AirspacePolygon& airspace) { if (!prepare_polygon(airspace.GetPoints())) return; if (!m_warnings.is_acked(airspace)) { // fill interior without overpainting any previous outlines { setup_interior(airspace); GLEnable blend(GL_BLEND); draw_prepared(); } } // draw outline setup_outline(airspace); draw_prepared(); }