src/Renderer/CuRenderer.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 "CuRenderer.hpp"
  25 #include "ChartRenderer.hpp"
  26 #include "Atmosphere/CuSonde.hpp"
  27 #include "Units/Units.hpp"
  28 #include "Language/Language.hpp"
  29
  30 #include <algorithm>
  31 #include <stdio.h>
  32
  33 using std::min;
  34 using std::max;
  35
  36 void
  37 RenderTemperatureChart(Canvas &canvas, const PixelRect rc,
  38                        const ChartLook &chart_look,
  39                        const CuSonde &cu_sonde)
  40 {
  41   ChartRenderer chart(chart_look, canvas, rc);
  42
  43   int hmin = 10000;
  44   int hmax = -10000;
  45   fixed tmin = cu_sonde.maxGroundTemperature;
  46   fixed tmax = cu_sonde.maxGroundTemperature;
  47
  48   // find range for scaling of graph
  49   for (unsigned i = 0; i < cu_sonde.NUM_LEVELS - 1u; i++) {
  50     if (cu_sonde.cslevels[i].empty())
  51       continue;
  52
  53     hmin = min(hmin, (int)i);
  54     hmax = max(hmax, (int)i);
  55
  56     tmin = min(tmin, min(cu_sonde.cslevels[i].tempDry,
  57                          min(cu_sonde.cslevels[i].airTemp,
  58                              cu_sonde.cslevels[i].dewpoint)));
  59     tmax = max(tmax, max(cu_sonde.cslevels[i].tempDry,
  60                          max(cu_sonde.cslevels[i].airTemp,
  61                              cu_sonde.cslevels[i].dewpoint)));
  62   }
  63
  64   if (hmin >= hmax) {
  65     chart.DrawNoData();
  66     return;
  67   }
  68
  69   chart.ScaleYFromValue(fixed(hmin));
  70   chart.ScaleYFromValue(fixed(hmax));
  71   chart.ScaleXFromValue(tmin);
  72   chart.ScaleXFromValue(tmax);
  73
  74   bool labelDry = false;
  75   bool labelAir = false;
  76   bool labelDew = false;
  77
  78   int ipos = 0;
  79
  80   for (unsigned i = 0; i < cu_sonde.NUM_LEVELS - 1u; i++) {
  81     if (cu_sonde.cslevels[i].empty() ||
  82         cu_sonde.cslevels[i + 1].empty())
  83       continue;
  84
  85     ipos++;
  86
  87     chart.DrawLine(cu_sonde.cslevels[i].tempDry, fixed(i),
  88                    cu_sonde.cslevels[i + 1].tempDry, fixed(i + 1),
  89                    ChartLook::STYLE_REDTHICK);
  90
  91     chart.DrawLine(cu_sonde.cslevels[i].airTemp, fixed(i),
  92                    cu_sonde.cslevels[i + 1].airTemp, fixed(i + 1),
  93                    ChartLook::STYLE_MEDIUMBLACK);
  94
  95     chart.DrawLine(cu_sonde.cslevels[i].dewpoint, fixed(i),
  96                    cu_sonde.cslevels[i + 1].dewpoint, fixed(i + 1),
  97                    ChartLook::STYLE_BLUETHIN);
  98
  99     if (ipos > 2) {
 100       if (!labelDry) {
 101         chart.DrawLabel(_T("DALR"),
 102                         cu_sonde.cslevels[i + 1].tempDry, fixed(i));
 103         labelDry = true;
 104       } else if (!labelAir) {
 105         chart.DrawLabel(_T("Air"),
 106                         cu_sonde.cslevels[i + 1].airTemp, fixed(i));
 107         labelAir = true;
 108       } else if (!labelDew) {
 109         chart.DrawLabel(_T("Dew"),
 110                         cu_sonde.cslevels[i + 1].dewpoint, fixed(i));
 111         labelDew = true;
 112       }
 113     }
 114   }
 115
 116   chart.DrawXLabel(_T("T"), _T(DEG "C"));
 117   chart.DrawYLabel(_T("h"));
 118 }
 119
 120 void
 121 TemperatureChartCaption(TCHAR *sTmp, const CuSonde &cu_sonde)
 122 {
 123   _stprintf(sTmp, _T("%s:\r\n  %5.0f %s\r\n\r\n%s:\r\n  %5.0f %s\r\n"),
 124             _("Thermal height"),
 125             (double)Units::ToUserAltitude(cu_sonde.thermalHeight),
 126             Units::GetAltitudeName(),
 127             _("Cloud base"),
 128             (double)Units::ToUserAltitude(cu_sonde.cloudBase),
 129             Units::GetAltitudeName());
 130 }