compass.cpp

/******************************************************************************
 * $Id: compass.cpp, v1.0 2010/08/05 SethDart Exp $
 *
 * Project:  OpenCPN
 * Purpose:  Dashboard Plugin
 * Author:   Jean-Eudes Onfray
 *           (Inspired by original work from Andreas Heiming)
 *
 ***************************************************************************
 *   Copyright (C) 2010 by David S. Register   *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,  USA.             *
 ***************************************************************************
 */
 
#include "compass.h"
 
// For compilers that support precompilation, includes "wx/wx.h".
#include <wx/wxprec.h>
 
#ifdef __BORLANDC__
#pragma hdrstop
#endif
 
// for all others, include the necessary headers (this file is usually all you
// need because it includes almost all "standard" wxWidgets headers)
#ifndef WX_PRECOMP
#include <wx/wx.h>
#endif
 
DashboardInstrument_Compass::DashboardInstrument_Compass(
    wxWindow* parent, wxWindowID id, wxString title,
    InstrumentProperties* Properties, DASH_CAP cap_flag)
    : DashboardInstrument_Dial(parent, id, title, Properties, cap_flag, 0, 360,
                               0, 360) {
  SetOptionMarker(5, DIAL_MARKER_SIMPLE, 2);
  SetOptionLabel(20, DIAL_LABEL_ROTATED);
  SetOptionMainValue(_T("%.0f"), DIAL_POSITION_INSIDE);
}
 
void DashboardInstrument_Compass::SetData(DASH_CAP st, double data,
                                          wxString unit) {
  double cdata = data;
  m_gpsWD = false;
  if (std::isnan(data)) m_gpsWD = true;
 
  if (st == m_MainValueCap) {
    // Rotate the rose
    m_AngleStart = -data;
    // Required to display data
    m_MainValue = data;
    m_MainValueUnit = unit;
  } else if (st == m_ExtraValueCap) {
    m_ExtraValue = data;
    m_ExtraValueUnit = unit;
  }
  Refresh();
}
 
void DashboardInstrument_Compass::DrawBackground(wxGCDC* dc) {
  DrawBoat(dc, m_cx, m_cy, m_radius);
  if (!m_gpsWD)  // Don't draw if no GPS
    DrawCompassRose(dc, m_cx, m_cy, 0.7 * m_radius, m_AngleStart, true,
                    m_Properties);
}
 
void DashboardInstrument_Compass::DrawForeground(wxGCDC* dc) {
  // We dont want the default foreground (arrow) drawn
}