1 | // ===================================================================
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2 | // $Id$
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3 |
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4 | // Qt headers
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5 | #include <QtGui>
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6 | #include <QtOpenGL>
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7 |
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8 | // C++ standard headers
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9 | #include <cmath>
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10 |
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11 | // local headers
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12 | #include "common.h"
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13 | #include "QtGlViewer.h"
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14 | #include "QtGlRenderer.h"
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15 | #include "Trackball.h"
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16 | #include "RssPreprocessor.h"
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17 | #include "SceneGraph.h"
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18 |
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19 |
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20 | namespace GtpVisibilityPreprocessor {
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21 |
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22 | QtGlRendererWidget *renderer;
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23 |
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24 | QtGlViewer::QtGlViewer(QWidget *parent,
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25 | QtGlRendererWidget *renderer):
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26 | QGLWidget(parent), mRenderer(renderer)
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27 | {
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28 | scale = 1.0f;
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29 | mWireframe = false;
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30 | trackball(manipulatorLastQuat, 0.0f, 0.0f, 0.0f, 0.0f);
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31 | //connect(renderer, SIGNAL(PvsUpdated()), this, SLOT(updateGL()));
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32 | //connect(renderer, SIGNAL(cutupdated), this, SLOT(updateGL()));
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33 |
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34 | const int delay = 250; // in milliseconds
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35 | timerId = startTimer(delay);
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36 | }
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37 |
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38 | QSize
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39 | QtGlViewer::minimumSizeHint() const
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40 | {
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41 | return QSize(100, 100);
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42 | }
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43 |
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44 | QSize
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45 | QtGlViewer::sizeHint() const {
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46 | return QSize(500, 500);
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47 | }
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48 |
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49 | // This method has to be rendefined by all renderer implementations
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50 | void
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51 | QtGlViewer::RenderScene()
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52 | {
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53 | ++ mRenderer->mFrame;
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54 |
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55 | glDisable(GL_DEPTH_TEST);
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56 |
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57 | glColor3f(0.8f, 0.8f, 0.8f);
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58 | mRenderer->RenderPvs();
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59 |
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60 | mRenderer->RenderViewPoint();
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61 |
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62 |
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63 | // if (mRenderer->mShowRays) {
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64 | // RssPreprocessor *p = (RssPreprocessor *)
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65 | // mRenderer->mViewCellsManager->GetPreprocessor();
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66 | // if (p->mRssTree) {
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67 | // VssRayContainer rays;
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68 | // p->mRssTree->CollectRays(rays, 10000);
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69 | // mRenderer->RenderRays(rays);
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70 | // }
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71 | // }
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72 |
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73 | if (mRenderer->mShowRenderCost)
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74 | mRenderer->RenderRenderCost();
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75 |
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76 | // render into the right side of the window buffer
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77 | if (mRenderer->mRenderViewCells)
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78 | mRenderer->RenderViewCells();
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79 |
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80 | glColor3f(1.0f, 1.0f, 1.0f);
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81 | mRenderer->RenderInfo();
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82 | }
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83 |
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84 |
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85 | void
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86 | QtGlViewer::initializeGL()
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87 | {
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88 | const char *vendorString, *rendererString, *versionString, *extString;
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89 |
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90 | // get GL info
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91 | vendorString = (const char *) glGetString(GL_VENDOR);
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92 | rendererString = (const char *) glGetString(GL_RENDERER);
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93 | versionString = (const char *) glGetString(GL_VERSION);
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94 | extString = (const char *) glGetString(GL_EXTENSIONS);
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95 |
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96 | Debug << "Info: GL Vendor = "<<vendorString<<endl
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97 | << "Info: GL Renderer = "<<rendererString<<endl
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98 | << "Info: GL Version = "<<versionString<<endl
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99 | << "Info: GL Extensions = "<<extString<<endl<<flush;
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100 |
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101 |
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102 | return;
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103 | }
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104 |
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105 | void
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106 | QtGlViewer::paintGL()
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107 | {
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108 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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109 | glLoadIdentity();
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110 |
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111 | float m[4][4];
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112 |
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113 | glLoadIdentity();
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114 | gluLookAt(0.0, 0.0, 1.0, /* eye is at (0,0,30) */
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115 | 0.0, 0.0, 0.0, /* center is at (0,0,0) */
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116 | 0.0, 1.0, 0.); /* up is in positive Y direction */
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117 |
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118 | build_rotmatrix(m, manipulatorLastQuat);
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119 | glMultMatrixf(&m[0][0]);
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120 |
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121 | float s = scale*20.0f/Magnitude(mRenderer->mSceneGraph->GetBox().Diagonal());
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122 | glScalef(s, s, s);
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123 |
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124 | Vector3 t = -mRenderer->mSceneGraph->GetBox().Center();
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125 | glTranslatef(t.x, t.y, t.z);
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126 |
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127 | RenderScene();
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128 | }
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129 |
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130 | void
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131 | QtGlViewer::resizeGL(int width, int height)
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132 | {
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133 | glViewport(0, 0, width, height);
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134 |
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135 | glMatrixMode(GL_PROJECTION);
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136 | glLoadIdentity();
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137 | gluPerspective(70.0, 1.0, 0.1, 100.0);
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138 | // glOrtho(-0.5*width/height, +0.5*width/height, 0.5, -0.5, 4.0, 15.0);
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139 | glMatrixMode(GL_MODELVIEW);
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140 | }
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141 |
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142 |
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143 | void
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144 | QtGlViewer::mousePressEvent(QMouseEvent *event)
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145 | {
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146 | lastPos = event->pos();
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147 | }
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148 |
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149 | void
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150 | QtGlViewer::keyPressEvent ( QKeyEvent * e )
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151 | {
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152 | switch (e->key()) {
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153 | case Qt::Key_W:
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154 | mWireframe = !mWireframe;
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155 | updateGL();
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156 | default:
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157 | e->ignore();
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158 | break;
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159 | }
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160 | updateGL();
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161 | }
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162 |
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163 | void
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164 | QtGlViewer::mouseMoveEvent(QMouseEvent *event)
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165 | {
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166 | int dx = event->x() - lastPos.x();
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167 | int dy = event->y() - lastPos.y();
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168 |
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169 | if (event->modifiers() & Qt::CTRL)
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170 | {
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171 | scale = scale*(1.0f - dy/(float)height());
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172 | if (scale < 0.01f)
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173 | scale = 0.01f;
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174 | updateGL();
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175 | }
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176 | else {
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177 | float W = width();
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178 | float H = height();
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179 | int x = event->x();
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180 | int lastX = lastPos.x();
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181 | int y = event->y();
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182 | int lastY = lastPos.y();
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183 |
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184 | float quat[4];
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185 | trackball(quat,
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186 | (2.0 * lastX - W) / W,
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187 | (H - 2.0 * lastY) / H,
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188 | (2.0 * x - W) / W,
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189 | (H - 2.0 * y) / H
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190 | );
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191 | add_quats(quat, manipulatorLastQuat, manipulatorLastQuat);
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192 | }
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193 |
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194 | lastPos = event->pos();
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195 | updateGL();
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196 | }
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197 |
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198 | void QtGlViewer::timerEvent(QTimerEvent *event)
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199 | {
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200 | update();
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201 | }
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202 |
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203 |
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204 | }
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205 |
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