src/Renderer/TrafficRenderer.cpp

   1 /*
   2  Copyright_License {
   3
   4  XCSoar Glide Computer - http://www.xcsoar.org/
   5  Copyright (C) 2000-2013 The XCSoar Project
   6  A detailed list of copyright holders can be found in the file "AUTHORS".
   7
   8  This program is free software; you can redistribute it and/or
   9  modify it under the terms of the GNU General Public License
  10  as published by the Free Software Foundation; either version 2
  11  of the License, or (at your option) any later version.
  12
  13  This program is distributed in the hope that it will be useful,
  14  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  GNU General Public License for more details.
  17
  18  You should have received a copy of the GNU General Public License
  19  along with this program; if not, write to the Free Software
  20  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21  }
  22  */
  23
  24 #include "TrafficRenderer.hpp"
  25 #include "Screen/Canvas.hpp"
  26 #include "Screen/Layout.hpp"
  27 #include "Look/TrafficLook.hpp"
  28 #include "FLARM/Traffic.hpp"
  29 #include "Math/Screen.hpp"
  30
  31 void
  32 TrafficRenderer::Draw(Canvas &canvas, const TrafficLook &traffic_look,
  33                       const FlarmTraffic &traffic, const Angle angle,
  34                       const FlarmColor color, const RasterPoint pt)
  35 {
  36   // Create point array that will form that arrow polygon
  37   RasterPoint Arrow[5];
  38
  39   // Fill the Arrow array with a normal arrow pointing north
  40   Arrow[0].x = -4;
  41   Arrow[0].y = 6;
  42   Arrow[1].x = 0;
  43   Arrow[1].y = -8;
  44   Arrow[2].x = 4;
  45   Arrow[2].y = 6;
  46   Arrow[3].x = 0;
  47   Arrow[3].y = 3;
  48   Arrow[4].x = -4;
  49   Arrow[4].y = 6;
  50
  51   // Select brush depending on AlarmLevel
  52   switch (traffic.alarm_level) {
  53   case FlarmTraffic::AlarmType::LOW:
  54   case FlarmTraffic::AlarmType::INFO_ALERT:
  55     canvas.Select(traffic_look.warning_brush);
  56     break;
  57   case FlarmTraffic::AlarmType::IMPORTANT:
  58   case FlarmTraffic::AlarmType::URGENT:
  59     canvas.Select(traffic_look.alarm_brush);
  60     break;
  61   case FlarmTraffic::AlarmType::NONE:
  62     canvas.Select(traffic_look.safe_brush);
  63     break;
  64   }
  65
  66   // Select black pen
  67   canvas.SelectBlackPen();
  68
  69   // Rotate and shift the arrow to the right position and angle
  70   PolygonRotateShift(Arrow, 5, pt.x, pt.y, angle);
  71
  72   // Draw the arrow
  73   canvas.DrawPolygon(Arrow, 5);
  74
  75   switch (color) {
  76   case FlarmColor::GREEN:
  77     canvas.Select(traffic_look.team_pen_green);
  78     break;
  79   case FlarmColor::BLUE:
  80     canvas.Select(traffic_look.team_pen_blue);
  81     break;
  82   case FlarmColor::YELLOW:
  83     canvas.Select(traffic_look.team_pen_yellow);
  84     break;
  85   case FlarmColor::MAGENTA:
  86     canvas.Select(traffic_look.team_pen_magenta);
  87     break;
  88   default:
  89     return;
  90   }
  91
  92   canvas.SelectHollowBrush();
  93   canvas.DrawCircle(pt.x, pt.y, Layout::FastScale(11));
  94 }