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1 #include <stdio.h>
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2 #include <stdlib.h>
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3 #include <QtGui>
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4 #include "ui.h"
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5
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6 static GLView *glview;
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7 static Volume *volume;
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8
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9 MainWindow::MainWindow()
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10 {
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11 setWindowTitle("Volume Renderer");
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12
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13 // OpenGL view
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14 glview = new GLView;
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15 setCentralWidget(glview);
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16
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17 // actions
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18 QAction *act_open = new QAction(qApp->style()->standardIcon(QStyle::SP_DialogOpenButton), "&Open...", this);
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19 act_open->setStatusTip("Open a volume dataset");
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20 QObject::connect(act_open, SIGNAL(triggered()), this, SLOT(open_volume()));
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21
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22 QAction *act_quit = new QAction("&Quit", this);
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23 act_quit->setStatusTip("Quit");
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24 QObject::connect(act_quit, SIGNAL(triggered()), this, SLOT(close()));
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25
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26 // menus
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27 QMenu *mfile = menuBar()->addMenu("&File");
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28 mfile->addAction(act_open);
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29 mfile->addAction(act_quit);
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30
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31 // toolbars
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32 QToolBar *tfile = addToolBar("&File");
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33 tfile->addAction(act_open);
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34
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35 statusBar();
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36 show();
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37 }
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38
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39 void MainWindow::open_volume()
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40 {
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41 QString fname = QFileDialog::getOpenFileName(this, "Open volume dataset", QString(), "Volume descriptors (*.vol)");
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42 if(!fname.isNull()) {
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43 Volume *vol = new Volume;
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44
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45 if(vol->load(qPrintable(fname))) {
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46 delete volume;
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47 volume = vol;
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48 volray_setvolume(vol);
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49 post_redisplay();
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50 } else {
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51 delete vol;
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52 }
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53 }
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54 }
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55
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56 void post_redisplay()
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57 {
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58 glview->updateGL();
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59 }
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60
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61
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62 GLView::GLView(QWidget *parent)
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63 : QGLWidget(QGLFormat(QGL::DoubleBuffer), parent)
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64 {
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65 }
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66
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67 QSize GLView::minimumSizeHint() const
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68 {
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69 return QSize(320, 200);
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70 }
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71
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72 QSize GLView::sizeHint() const
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73 {
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74 return QSize(1280, 800);
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75 }
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76
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77 void GLView::initializeGL()
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78 {
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79 if(!volray_init()) {
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80 exit(0);
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81 }
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82 glClearColor(1, 0, 0, 1);
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83 }
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84
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85 void GLView::resizeGL(int xsz, int ysz)
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86 {
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87 volray_resize(xsz, ysz);
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88 }
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89
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90 void GLView::paintGL()
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91 {
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92 volray_draw();
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93 }
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94
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95 static int button_number(Qt::MouseButton bn)
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96 {
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97 switch(bn) {
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98 case Qt::LeftButton:
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99 return 0;
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100 case Qt::MidButton:
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101 return 1;
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102 case Qt::RightButton:
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103 return 2;
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104 default:
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105 break;
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106 }
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107 return -1;
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108 }
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109
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110 void GLView::mousePressEvent(QMouseEvent *ev)
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111 {
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112 int bn = button_number(ev->button());
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113 if(bn >= 0) {
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114 volray_mouse(bn, 1, ev->x(), ev->y());
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115 }
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116 }
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117
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118 void GLView::mouseReleaseEvent(QMouseEvent *ev)
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119 {
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120 int bn = button_number(ev->button());
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121 if(bn >= 0) {
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122 volray_mouse(bn, 0, ev->x(), ev->y());
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123 }
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124 }
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125
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126 void GLView::mouseMoveEvent(QMouseEvent *ev)
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127 {
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128 volray_motion(ev->x(), ev->y());
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129 }
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