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      * Observer control
  74      */
  75
  76     /// Change to sun view.
  77     void sunView();
  78
  79     /*
  80      * Interaction control
  81      */
  82
  83     /// Enable navigation mode.
  84     void navigationMode();
  85
  86     /// Enable texture point selection mode.
  87     void texturePointMode(QObject* receiver, const char* member);
  88
  89     /*
  90      * General rendering slots
  91      */
  92
  93     /// Change the quality to adaptive.
  94     void setQualityAdaptive();
  95
  96     /// Change the quality to full resolution.
  97     void setQualityFull();
  98
  99     /// Change the polygon mode to normal.
 100     void setPolygonModeNormal();
 101
 102     /// Change the polygon mode to wireframe.
 103     void setPolygonModeWireframe();
 104
 105     /// Remove colour coding.
 106     void setColourCodingNone();
 107
 108     /// Set colour coding to elevation sample alignment.
 109     void setColourCodingElevationSampleAlignment();
 110
 111     /// Set colour mapping for an output channel to an input band.
 112     void setColourMapping(int output, int input);
 113
 114     /*
 115      * Elevation modification slots
 116      */
 117
 118     /// Go to flat elevation mode.
 119     void setElevationFlat();
 120
 121     /// Go to raw SRTM elevation mode.
 122     void setElevationRaw();
 123
 124     /// Go to corrected elevation mode.
 125     void setElevationCorrected();
 126
 127     /// Set the level of correction applied to the elevation data.
 128     void setElevationCorrection(int correction);
 129
 130     /// Set the elevation data set name.
 131     void setElevationDataSet(const QString& name);
 132
 133   signals:
 134
 135     /*
 136      * Signals
 137      */
 138
 139     /// Emitted when the mouse moves to a new position on the globe.
 140     void mouseGeoChanged(const tcGeo& geo);
 141
 142     /** Emitted when the mouse moves to a new position on the globe.
 143      * This has an int so it is compatible with QStatusBar::showMessage slot.
 144      */
 145     void mouseGeoTextChanged(const QString& geo);
 146
 147     /// Emitted when a texture point is selected.
 148     void texturePointSelected(const maths::Vector<2,float>& coord);
 149
 150   protected:
 151
 152     /*
 153      * Rendering
 154      */
 155
 156     // Reimplemented
 157     virtual void initializeGL();
 158
 159     // Reimplemented
 160     virtual void resizeGL(int w, int h);
 161
 162     // Reimplemented
 163     virtual void paintGL();
 164
 165     /*
 166      * Mouse events
 167      */
 168
 169     // Reimplemented
 170     virtual void mouseMoveEvent(QMouseEvent* event);
 171
 172     // Reimplemented
 173     virtual void mousePressEvent(QMouseEvent* event);
 174
 175     // Reimplemented
 176     virtual void mouseReleaseEvent(QMouseEvent* event);
 177
 178     // Reimplemented
 179     virtual void wheelEvent(QWheelEvent* event);
 180
 181   private:
 182
 183     /*
 184      * Rendering options
 185      */
 186
 187     /// Adaptive quality.
 188     bool m_adaptiveQuality;
 189
 190     /// OpenGL polygon mode.
 191     GLenum m_polygonMode;
 192
 193     /*
 194      * Variables
 195      */
 196
 197     /// Observer.
 198     tcObserver* m_observer;
 199
 200     /// Globe to display.
 201     tcGlobe* m_globe;
 202
 203     /*
 204      * Interaction
 205      */
 206
 207     /// Interaction mode.
 208     enum
 209     {
 210       Navigation,
 211       TexturePoint
 212     } m_interactionMode;
 213
 214     /// Are we currently interacting?
 215     bool m_mouseInteracting;
 216
 217     /// Previous mouse position.
 218     QPointF m_mousePos;
 219
 220     /// Mouse intersecting globe?
 221     bool m_mouseIntersecting;
 222
 223     /// Current mouse coordinate.
 224     tcGeo m_mouseCoord;
 225
 226     /// Slicing with the mouse?
 227     bool m_mouseSlicing;
 228
 229     /// Start of mouse slicing action.
 230     tcGeo m_mouseStartCoord;
 231
 232     /// Sliced?
 233     bool m_sliced;
 234
 235     /// Coordinates of slice.
 236     tcGeo m_slice[2];
 237
 238     /// Texture point object.
 239     QObject* m_texturePointObject;
 240
 241     /// Texture point slot/signal.
 242     const char* m_texturePointMember;
 243 };
 244
 245 #endif
 246