[1833] | 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 | }
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| 33 |
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| 34 | QSize
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| 35 | QtGlViewer::minimumSizeHint() const
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| 36 | {
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| 37 | return QSize(100, 100);
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| 38 | }
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| 39 |
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| 40 | QSize
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| 41 | QtGlViewer::sizeHint() const {
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| 42 | return QSize(500, 500);
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| 43 | }
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| 44 |
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| 45 | // This method has to be rendefined by all renderer implementations
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| 46 | void
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| 47 | QtGlViewer::RenderScene()
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| 48 | {
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| 49 | mRenderer->mFrame++;
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| 50 |
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| 51 | // render into the right side of the window buffer
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| 52 | if (mRenderer->mRenderViewCells)
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| 53 | mRenderer->RenderViewCells();
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| 54 |
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| 55 | mRenderer->RenderPvs();
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| 56 |
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| 57 | // if (mRenderer->mShowRays) {
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| 58 | // RssPreprocessor *p = (RssPreprocessor *)
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| 59 | // mRenderer->mViewCellsManager->GetPreprocessor();
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| 60 | // if (p->mRssTree) {
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| 61 | // VssRayContainer rays;
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| 62 | // p->mRssTree->CollectRays(rays, 10000);
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| 63 | // mRenderer->RenderRays(rays);
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| 64 | // }
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| 65 | // }
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| 66 |
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| 67 | if (mRenderer->mShowRenderCost)
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| 68 | mRenderer->RenderRenderCost();
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| 69 |
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| 70 | glColor3f(1.0f, 1.0f, 1.0f);
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| 71 | mRenderer->RenderInfo();
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| 72 | }
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| 73 |
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| 74 |
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| 75 | void
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| 76 | QtGlViewer::initializeGL()
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| 77 | {
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| 78 | const char *vendorString, *rendererString, *versionString, *extString;
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| 79 |
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| 80 | // get GL info
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| 81 | vendorString = (const char *) glGetString(GL_VENDOR);
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| 82 | rendererString = (const char *) glGetString(GL_RENDERER);
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| 83 | versionString = (const char *) glGetString(GL_VERSION);
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| 84 | extString = (const char *) glGetString(GL_EXTENSIONS);
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| 85 |
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| 86 | Debug << "Info: GL Vendor = "<<vendorString<<endl
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| 87 | << "Info: GL Renderer = "<<rendererString<<endl
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| 88 | << "Info: GL Version = "<<versionString<<endl
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| 89 | << "Info: GL Extensions = "<<extString<<endl<<flush;
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| 90 |
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| 91 |
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| 92 | return;
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| 93 | }
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| 94 |
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| 95 | void
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| 96 | QtGlViewer::paintGL()
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| 97 | {
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| 98 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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| 99 | glLoadIdentity();
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| 100 |
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| 101 | float m[4][4];
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| 102 |
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| 103 | glLoadIdentity();
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| 104 | gluLookAt(0.0, 0.0, 1.0, /* eye is at (0,0,30) */
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| 105 | 0.0, 0.0, 0.0, /* center is at (0,0,0) */
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| 106 | 0.0, 1.0, 0.); /* up is in positive Y direction */
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| 107 |
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| 108 | build_rotmatrix(m, manipulatorLastQuat);
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| 109 | glMultMatrixf(&m[0][0]);
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| 110 |
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| 111 | float s = scale*20.0f/Magnitude(mRenderer->mSceneGraph->GetBox().Diagonal());
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| 112 | glScalef(s, s, s);
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| 113 |
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| 114 | Vector3 t = -mRenderer->mSceneGraph->GetBox().Center();
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| 115 | glTranslatef(t.x, t.y, t.z);
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| 116 |
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| 117 | RenderScene();
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| 118 | }
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| 119 |
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| 120 | void
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| 121 | QtGlViewer::resizeGL(int width, int height)
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| 122 | {
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| 123 | glViewport(0, 0, width, height);
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| 124 |
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| 125 | glMatrixMode(GL_PROJECTION);
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| 126 | glLoadIdentity();
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| 127 | gluPerspective(70.0, 1.0, 0.1, 100.0);
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| 128 | // glOrtho(-0.5*width/height, +0.5*width/height, 0.5, -0.5, 4.0, 15.0);
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| 129 | glMatrixMode(GL_MODELVIEW);
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| 130 | }
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| 131 |
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| 132 |
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| 133 | void
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| 134 | QtGlViewer::mousePressEvent(QMouseEvent *event)
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| 135 | {
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| 136 | lastPos = event->pos();
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| 137 | }
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| 138 |
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| 139 | void
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| 140 | QtGlViewer::keyPressEvent ( QKeyEvent * e )
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| 141 | {
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| 142 | switch (e->key()) {
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| 143 | case Qt::Key_W:
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| 144 | mWireframe = !mWireframe;
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| 145 | updateGL();
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| 146 | default:
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| 147 | e->ignore();
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| 148 | break;
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| 149 | }
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| 150 | updateGL();
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| 151 | }
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| 152 |
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| 153 | void
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| 154 | QtGlViewer::mouseMoveEvent(QMouseEvent *event)
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| 155 | {
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| 156 | int dx = event->x() - lastPos.x();
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| 157 | int dy = event->y() - lastPos.y();
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| 158 |
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| 159 | if (event->modifiers() & Qt::CTRL)
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| 160 | {
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| 161 | scale = scale*(1.0f - dy/(float)height());
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| 162 | if (scale < 0.01)
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| 163 | scale = 0.01;
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| 164 | updateGL();
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| 165 | }
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| 166 | else {
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| 167 | float W = width();
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| 168 | float H = height();
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| 169 | int x = event->x();
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| 170 | int lastX = lastPos.x();
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| 171 | int y = event->y();
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| 172 | int lastY = lastPos.y();
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| 173 |
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| 174 | float quat[4];
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| 175 | trackball(quat,
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| 176 | (2.0 * lastX - W) / W,
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| 177 | (H - 2.0 * lastY) / H,
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| 178 | (2.0 * x - W) / W,
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| 179 | (H - 2.0 * y) / H
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| 180 | );
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| 181 | add_quats(quat, manipulatorLastQuat, manipulatorLastQuat);
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| 182 | }
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| 183 |
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| 184 | lastPos = event->pos();
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| 185 | updateGL();
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| 186 | }
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| 187 | }
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