tcViewportWidget.h

   1 /***************************************************************************
   2  *   This file is part of Tecorrec.                                        *
   3  *   Copyright 2008 James Hogan <james@albanarts.com>                      *
   4  *                                                                         *
   5  *   Tecorrec is free software: you can redistribute it and/or modify      *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation, either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   Tecorrec is distributed in the hope that it will be useful,           *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with Tecorrec.  If not, write to the Free Software Foundation,  *
  17  *   Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.   *
  18  ***************************************************************************/
  19
  20 #ifndef _tcViewportWidget_h_
  21 #define _tcViewportWidget_h_
  22
  23 /**
  24  * @file tcViewportWidget.h
  25  * @brief OpenGL viewport widget.
  26  */
  27
  28 #include <tcGeo.h>
  29 #include <Vector.h>
  30
  31 #include <QGLWidget>
  32 #include <QPointF>
  33
  34 class tcObserver;
  35 class tcGlobe;
  36
  37 class QString;
  38
  39 /// OpenGL viewport widget.
  40 class tcViewportWidget : public QGLWidget
  41 {
  42     Q_OBJECT
  43
  44   public:
  45
  46     /*
  47      * Constructors + destructor
  48      */
  49
  50     /// Primary constructor.
  51     tcViewportWidget(QWidget* parent);
  52
  53     /// Destructor.
  54     virtual ~tcViewportWidget();
  55
  56     /*
  57      * Modifiers
  58      */
  59
  60     /// Set the globe object.
  61     void setGlobe(tcGlobe* globe);
  62
  63     /*
  64      * Accessors
  65      */
  66
  67     /// Find the coordinates under the mouse.
  68     tcGeo geoAt(float x, float y, bool* ok = 0);
  69
  70   public slots:
  71
  72     /*
  73      * General rendering slots
  74      */
  75
  76     /// Change the polygon mode to normal.
  77     void setPolygonModeNormal();
  78
  79     /// Change the polygon mode to wireframe.
  80     void setPolygonModeWireframe();
  81
  82     /// Remove colour coding.
  83     void setColourCodingNone();
  84
  85     /// Set colour coding to elevation sample alignment.
  86     void setColourCodingElevationSampleAlignment();
  87
  88     /*
  89      * Elevation modification slots
  90      */
  91
  92     /// Go to flat elevation mode.
  93     void setElevationFlat();
  94
  95     /// Go to raw SRTM elevation mode.
  96     void setElevationRaw();
  97
  98     /// Go to corrected elevation mode.
  99     void setElevationCorrected();
 100
 101     /// Set the level of correction applied to the elevation data.
 102     void setElevationCorrection(int correction);
 103
 104     /// Set the elevation data set name.
 105     void setElevationDataSet(const QString& name);
 106
 107   signals:
 108
 109     /*
 110      * Signals
 111      */
 112
 113     /// Emitted when the mouse moves to a new position on the globe.
 114     void mouseGeoChanged(const tcGeo& geo);
 115
 116     /** Emitted when the mouse moves to a new position on the globe.
 117      * This has an int so it is compatible with QStatusBar::showMessage slot.
 118      */
 119     void mouseGeoTextChanged(const QString& geo);
 120
 121   protected:
 122
 123     /*
 124      * Rendering
 125      */
 126
 127     // Reimplemented
 128     virtual void initializeGL();
 129
 130     // Reimplemented
 131     virtual void resizeGL(int w, int h);
 132
 133     // Reimplemented
 134     virtual void paintGL();
 135
 136     /*
 137      * Mouse events
 138      */
 139
 140     // Reimplemented
 141     virtual void mouseMoveEvent(QMouseEvent* event);
 142
 143     // Reimplemented
 144     virtual void mousePressEvent(QMouseEvent* event);
 145
 146     // Reimplemented
 147     virtual void mouseReleaseEvent(QMouseEvent* event);
 148
 149     // Reimplemented
 150     virtual void wheelEvent(QWheelEvent* event);
 151
 152   private:
 153
 154     /*
 155      * Rendering options
 156      */
 157
 158     /// OpenGL polygon mode.
 159     GLenum m_polygonMode;
 160
 161     /*
 162      * Variables
 163      */
 164
 165     /// Observer.
 166     tcObserver* m_observer;
 167
 168     /// Globe to display.
 169     tcGlobe* m_globe;
 170
 171     /*
 172      * Interaction
 173      */
 174
 175     /// Are we currently interacting?
 176     bool m_mouseInteracting;
 177
 178     /// Previous mouse position.
 179     QPointF m_mousePos;
 180
 181     /// Mouse intersecting globe?
 182     bool m_mouseIntersecting;
 183
 184     /// Current mouse coordinate.
 185     tcGeo m_mouseCoord;
 186
 187     /// Slicing with the mouse?
 188     bool m_mouseSlicing;
 189
 190     /// Start of mouse slicing action.
 191     tcGeo m_mouseStartCoord;
 192
 193     /// Sliced?
 194     bool m_sliced;
 195
 196     /// Coordinates of slice.
 197     tcGeo m_slice[2];
 198 };
 199
 200 #endif
 201