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