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(int imagery);
  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     /// Set slice.
  90     void setSlice(const tcGeo& sw, const tcGeo& ne);
  91
  92     /*
  93      * General rendering slots
  94      */
  95
  96     /// Change the quality to adaptive.
  97     void setQualityAdaptive();
  98
  99     /// Change the quality to full resolution.
 100     void setQualityFull();
 101
 102     /// Change the polygon mode to normal.
 103     void setPolygonModeNormal();
 104
 105     /// Change the polygon mode to wireframe.
 106     void setPolygonModeWireframe();
 107
 108     /// Remove colour coding.
 109     void setColourCodingNone();
 110
 111     /// Set colour coding to elevation sample alignment.
 112     void setColourCodingElevationSampleAlignment();
 113
 114     /// Set colour mapping for an output channel to an input band.
 115     void setColourMapping(int output, int input, int inputGroup);
 116
 117     /*
 118      * Elevation modification slots
 119      */
 120
 121     /// Set the primary elevation data set name.
 122     void setPrimaryElevationDataSet(const QString& name);
 123
 124     /// Set the secondary elevation data set name.
 125     void setSecondaryElevationDataSet(const QString& name);
 126
 127     /// Go to flat primary elevation mode.
 128     void setPrimaryElevationFlat();
 129
 130     /// Go to flat secondary elevation mode.
 131     void setSecondaryElevationFlat();
 132
 133     /// Go to raw SRTM primary elevation mode.
 134     void setPrimaryElevationRaw();
 135
 136     /// Go to raw SRTM secondary elevation mode.
 137     void setSecondaryElevationRaw();
 138
 139     /// Go to corrected primary elevation mode.
 140     void setPrimaryElevationCorrected();
 141
 142     /// Go to corrected secondary elevation mode.
 143     void setSecondaryElevationCorrected();
 144
 145     /// Set the interpolation value.
 146     void setElevationInterpolation(int interpolation);
 147
 148   signals:
 149
 150     /*
 151      * Signals
 152      */
 153
 154     /// Emitted when the mouse moves to a new position on the globe.
 155     void mouseGeoChanged(const tcGeo& geo);
 156
 157     /** Emitted when the mouse moves to a new position on the globe.
 158      * This has an int so it is compatible with QStatusBar::showMessage slot.
 159      */
 160     void mouseGeoTextChanged(const QString& geo);
 161
 162     /// Emitted when a texture point is selected.
 163     void texturePointSelected(const maths::Vector<2,float>& coord);
 164
 165   protected:
 166
 167     /*
 168      * Rendering
 169      */
 170
 171     // Reimplemented
 172     virtual void initializeGL();
 173
 174     // Reimplemented
 175     virtual void resizeGL(int w, int h);
 176
 177     // Reimplemented
 178     virtual void paintGL();
 179
 180     /*
 181      * Mouse events
 182      */
 183
 184     // Reimplemented
 185     virtual void mouseMoveEvent(QMouseEvent* event);
 186
 187     // Reimplemented
 188     virtual void mousePressEvent(QMouseEvent* event);
 189
 190     // Reimplemented
 191     virtual void mouseReleaseEvent(QMouseEvent* event);
 192
 193     // Reimplemented
 194     virtual void wheelEvent(QWheelEvent* event);
 195
 196   private:
 197
 198     /*
 199      * Rendering options
 200      */
 201
 202     /// Adaptive quality.
 203     bool m_adaptiveQuality;
 204
 205     /// OpenGL polygon mode.
 206     GLenum m_polygonMode;
 207
 208     /*
 209      * Variables
 210      */
 211
 212     /// Observer.
 213     tcObserver* m_observer;
 214
 215     /// Globe to display.
 216     tcGlobe* m_globe;
 217
 218     /*
 219      * Interaction
 220      */
 221
 222     /// Interaction mode.
 223     enum
 224     {
 225       Navigation,
 226       TexturePoint
 227     } m_interactionMode;
 228
 229     /// Are we currently interacting?
 230     bool m_mouseInteracting;
 231
 232     /// Previous mouse position.
 233     QPointF m_mousePos;
 234
 235     /// Mouse intersecting globe?
 236     bool m_mouseIntersecting;
 237
 238     /// Current mouse coordinate.
 239     tcGeo m_mouseCoord;
 240
 241     /// Slicing with the mouse?
 242     bool m_mouseSlicing;
 243
 244     /// Start of mouse slicing action.
 245     tcGeo m_mouseStartCoord;
 246
 247     /// Sliced?
 248     bool m_sliced;
 249
 250     /// Coordinates of slice.
 251     tcGeo m_slice[2];
 252
 253     /// Texture point object.
 254     QObject* m_texturePointObject;
 255
 256     /// Texture point slot/signal.
 257     const char* m_texturePointMember;
 258 };
 259
 260 #endif
 261