1 | /**
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2 | \file
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3 | TestCullingApplication.cpp
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4 | \brief
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5 | Tests the occlusion culling algorithm
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6 | */
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7 |
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8 | #include <OgreNoMemoryMacros.h>
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9 | #include <CEGUI/CEGUI.h>
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10 | #include <../CEGUIRenderer/include/OgreCEGUIRenderer.h>
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11 | #include <../CEGUIRenderer/include/OgreCEGUIResourceProvider.h>
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12 | #include <../CEGUIRenderer/include/OgreCEGUITexture.h>
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13 | #include <OgreMemoryMacros.h>
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14 |
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15 | #include "Ogre.h"
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16 | #include "TestCullingApplication.h"
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17 | #include "OgreOcclusionCullingSceneTraverser.h"
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18 |
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19 | #define WIN32_LEAN_AND_MEAN
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20 | #include "windows.h"
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21 |
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22 | RaySceneQuery* raySceneQuery = 0;
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23 |
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24 | /***********************************************/
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25 | /* TestCullingApplication implementation */
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26 | /***********************************************/
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27 | TestCullingApplication::~TestCullingApplication()
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28 | {
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29 | delete raySceneQuery;
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30 | }
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31 | //-----------------------------------------------------------------------
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32 | void TestCullingApplication::createCamera( void )
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33 | {
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34 | // Create the camera
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35 | mCamera = mSceneMgr->createCamera("PlayerCam");
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36 |
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37 | // Position it at 500 in Z direction
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38 | mCamera->setPosition(Vector3(128,25,128));
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39 |
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40 | // Look back along -Z
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41 | mCamera->lookAt(Vector3(0,0,-300));
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42 | mCamera->setNearClipDistance( 1 );
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43 | mCamera->setFarClipDistance( 1000 );
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44 | }
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45 | //-----------------------------------------------------------------------
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46 | void TestCullingApplication::createScene(void)
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47 | {
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48 | Plane waterPlane;
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49 | // Set ambient light
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50 | mSceneMgr->setAmbientLight(ColourValue(0.5, 0.5, 0.5));
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51 |
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52 | // Create a light
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53 | Light* l = mSceneMgr->createLight("MainLight");
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54 | // Accept default settings: point light, white diffuse, just set position
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55 | // NB I could attach the light to a SceneNode if I wanted it to move automatically with
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56 | // other objects, but I don't
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57 | l->setPosition(20,80,50);
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58 |
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59 | // Fog
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60 | // NB it's VERY important to set this before calling setWorldGeometry
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61 | // because the vertex program picked will be different
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62 | ColourValue fadeColour(0.93, 0.86, 0.76);
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63 | mSceneMgr->setFog( FOG_LINEAR, fadeColour, .001, 500, 1000);
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64 | mWindow->getViewport(0)->setBackgroundColour(fadeColour);
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65 |
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66 | std::string terrain_cfg("terrain.cfg");
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67 | #if OGRE_PLATFORM == OGRE_PLATFORM_APPLE
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68 | terrain_cfg = mResourcePath + terrain_cfg;
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69 | #endif
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70 | mSceneMgr -> setWorldGeometry( terrain_cfg );
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71 | // Infinite far plane?
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72 | if (mRoot->getRenderSystem()->getCapabilities()->hasCapability(RSC_INFINITE_FAR_PLANE))
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73 | {
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74 | mCamera->setFarClipDistance(0);
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75 | }
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76 |
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77 | // Define the required skyplane
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78 | Plane plane;
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79 | // 5000 world units from the camera
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80 | plane.d = 5000;
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81 | // Above the camera, facing down
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82 | plane.normal = -Vector3::UNIT_Y;
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83 |
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84 | // Set a nice viewpoint
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85 | mCamera->setPosition(707,2500,528);
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86 | mCamera->setOrientation(Quaternion(-0.3486, 0.0122, 0.9365, 0.0329));
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87 |
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88 | raySceneQuery = mSceneMgr->createRayQuery(
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89 | Ray(mCamera->getPosition(), Vector3::NEGATIVE_UNIT_Y));
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90 |
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91 | // Create a skybox
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92 | // mSceneMgr->setSkyBox(true, "Examples/SpaceSkyBox");
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93 |
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94 | // CEGUI setup
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95 | setupGui();
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96 | }
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97 | //-----------------------------------------------------------------------
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98 | void TestCullingApplication::setupGui( void )
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99 | {
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100 | mGUIRenderer = new CEGUI::OgreCEGUIRenderer(mWindow, Ogre::RENDER_QUEUE_OVERLAY, false, 3000, ST_EXTERIOR_CLOSE);
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101 | mGUISystem = new CEGUI::System(mGUIRenderer);
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102 |
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103 | // Mouse
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104 | CEGUI::SchemeManager::getSingleton().loadScheme((CEGUI::utf8*)"TaharezLook.scheme");
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105 | CEGUI::MouseCursor::getSingleton().setImage("TaharezLook", "MouseArrow");
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106 | mGUISystem->setDefaultMouseCursor(
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107 | (CEGUI::utf8*)"TaharezLook", (CEGUI::utf8*)"MouseArrow");
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108 |
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109 | CEGUI::MouseCursor::getSingleton().show( );
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110 |
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111 | /* CEGUI::Window* sheet =
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112 | CEGUI::WindowManager::getSingleton().loadWindowLayout(
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113 | (CEGUI::utf8*)"ogregui.layout");
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114 |
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115 | mGUISystem->setGUISheet(sheet);*/
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116 | }
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117 | //-----------------------------------------------------------------------
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118 | void TestCullingApplication::createFrameListener(void)
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119 | {
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120 | mFrameListener= new MouseQueryListener(mWindow, mCamera, mSceneMgr, mGUIRenderer);
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121 | mFrameListener->showDebugOverlay(true);
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122 | mRoot->addFrameListener(mFrameListener);
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123 | }
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124 | //-----------------------------------------------------------------------
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125 | void TestCullingApplication::chooseSceneManager(void)
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126 | {
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127 | //mSceneMgr = mRoot->getSceneManager(ST_GENERIC);
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128 | mSceneMgr = mRoot->getSceneManager(ST_EXTERIOR_CLOSE);
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129 | }
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130 |
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131 | /***********************************************/
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132 | /* MouseQueryListener implementation */
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133 | /***********************************************/
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134 |
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135 | //-----------------------------------------------------------------------
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136 | MouseQueryListener::MouseQueryListener(RenderWindow* win, Camera* cam, SceneManager *sceneManager, CEGUI::Renderer *renderer)
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137 | : ExampleFrameListener(win, cam, false, true), mGUIRenderer(renderer),
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138 | mShutdownRequested(false)
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139 | {
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140 |
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141 | // Setup default variables
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142 | // mCurrentObject = NULL;
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143 | mLMouseDown = false;
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144 | mRMouseDown = false;
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145 | mSceneMgr = sceneManager;
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146 |
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147 | // Reduce move speed
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148 | mMoveSpeed = 50;
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149 | mRotateSpeed *= 2;
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150 |
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151 | mCurrentAlgorithm = OcclusionCullingSceneTraverser::RENDER_COHERENT;
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152 | mThreshold = 0;
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153 |
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154 | // Register this so that we get mouse events.
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155 | mEventProcessor->addMouseListener(this);
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156 | mEventProcessor->addMouseMotionListener(this);
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157 | mEventProcessor->addKeyListener(this);
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158 |
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159 | // show overlay
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160 | Overlay* pOver = OverlayManager::getSingleton().getByName("Example/OcclusionDemoOverlay");
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161 |
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162 | mAlgorithmInfo = OverlayManager::getSingleton().getOverlayElement("Example/Occlusion/AlgorithmInfo");
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163 | mThresholdInfo = OverlayManager::getSingleton().getOverlayElement("Example/Occlusion/ThresholdInfo");
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164 | mFrustumCulledNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Occlusion/FrustumCulledNodesInfo");
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165 | mQueryCulledNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Occlusion/QueryCulledNodesInfo");
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166 | mTraversedNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Occlusion/TraversedNodesInfo");
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167 |
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168 | mAlgorithmInfo->setCaption(": " + mCurrentAlgorithmCaptions[mCurrentAlgorithm]);
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169 | mThresholdInfo->setCaption(": 0");
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170 | mFrustumCulledNodesInfo->setCaption(": 0");
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171 | mQueryCulledNodesInfo->setCaption(": 0");
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172 | mTraversedNodesInfo->setCaption(": 0");
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173 |
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174 | pOver->show();
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175 | } // MouseQueryListener
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176 | //-----------------------------------------------------------------------
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177 | void MouseQueryListener::mouseMoved (MouseEvent *e)
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178 | {
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179 | // Update CEGUI with the mouse motion
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180 | CEGUI::System::getSingleton().injectMouseMove(e->getRelX() * mGUIRenderer->getWidth(), e->getRelY() * mGUIRenderer->getHeight());
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181 | }
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182 | //-----------------------------------------------------------------------
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183 | void MouseQueryListener::mousePressed(MouseEvent* e)
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184 | {
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185 | // Left mouse button down
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186 | if (e->getButtonID() & InputEvent::BUTTON0_MASK)
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187 | {
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188 | CEGUI::MouseCursor::getSingleton().hide( );
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189 | mLMouseDown = true;
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190 | } // if
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191 | // Right mouse button down
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192 | else if (e->getButtonID() & InputEvent::BUTTON1_MASK)
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193 | {
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194 | CEGUI::MouseCursor::getSingleton().hide( );
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195 | mRMouseDown = true;
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196 | } // else if
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197 | } // mousePressed
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198 |
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199 | //-----------------------------------------------------------------------
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200 | void MouseQueryListener::mouseReleased(MouseEvent* e)
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201 | {
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202 | // Left mouse button up
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203 | if (e->getButtonID() & InputEvent::BUTTON0_MASK)
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204 | {
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205 | CEGUI::MouseCursor::getSingleton().show( );
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206 | mLMouseDown = false;
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207 | }
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208 | // Right mouse button up
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209 | else if (e->getButtonID() & InputEvent::BUTTON1_MASK)
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210 | {
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211 | CEGUI::MouseCursor::getSingleton().show( );
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212 | mRMouseDown = false;
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213 | }
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214 | }
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215 | //-----------------------------------------------------------------------
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216 | void MouseQueryListener::mouseDragged (MouseEvent *e)
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217 | {
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218 | /*
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219 | // If we are dragging the left mouse button.
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220 | if ( mLMouseDown )
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221 | {
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222 | mShipNode->translate(-e->getRelX() * 200, -e->getRelY() * 200, 0.0);
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223 | }
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224 | */
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225 |
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226 | // If we are dragging the right mouse button.
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227 | if ( mRMouseDown )
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228 | {
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229 | mCamera->yaw( -e->getRelX() * mRotateSpeed );
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230 | mCamera->pitch( -e->getRelY() * mRotateSpeed );
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231 | }
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232 | }
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233 | //-----------------------------------------------------------------------
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234 | bool MouseQueryListener::frameStarted(const FrameEvent &evt)
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235 | {
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236 | // clamp to terrain
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237 | static Ray updateRay;
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238 | updateRay.setOrigin(mCamera->getPosition());
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239 | updateRay.setDirection(Vector3::NEGATIVE_UNIT_Y);
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240 | raySceneQuery->setRay(updateRay);
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241 | RaySceneQueryResult& qryResult = raySceneQuery->execute();
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242 | RaySceneQueryResult::iterator i = qryResult.begin();
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243 |
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244 | if (i != qryResult.end() && i->worldFragment)
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245 | {
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246 | SceneQuery::WorldFragment* wf = i->worldFragment;
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247 | mCamera->setPosition(mCamera->getPosition().x,
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248 | i->worldFragment->singleIntersection.y + 10,
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249 | mCamera->getPosition().z);
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250 | }
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251 |
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252 | return ExampleFrameListener::frameStarted(evt);
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253 | }
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254 | //-----------------------------------------------------------------------
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255 | bool MouseQueryListener::frameEnded(const FrameEvent& evt)
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256 | {
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257 | if (mShutdownRequested)
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258 | return false;
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259 |
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260 | if (timeDelay >= 0)
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261 | timeDelay -= evt.timeSinceLastFrame;
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262 |
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263 | KEY_PRESSED(KC_SPACE, 0.3, changeAlgorithm());
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264 |
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265 | KEY_PRESSED(KC_SUBTRACT, 0.3, changeThreshold(-10));
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266 | KEY_PRESSED(KC_ADD, 0, changeThreshold(10));
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267 | //KEY_PRESSED(KC_T, 1, change);
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268 |
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269 | changeStats();
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270 |
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271 | return ExampleFrameListener::frameStarted(evt) && ExampleFrameListener::frameEnded(evt);
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272 | }
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273 | //-----------------------------------------------------------------------
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274 | void MouseQueryListener::changeThreshold(int incr)
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275 | {
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276 | mThreshold += incr; if(mThreshold < 0) mThreshold = 0;
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277 |
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278 | char str[100]; sprintf(str,": %d", mThreshold);
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279 |
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280 | mSceneMgr->setOption("Threshold", &mThreshold);
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281 | mThresholdInfo->setCaption(str);
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282 | }
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283 | //-----------------------------------------------------------------------
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284 | void MouseQueryListener::changeAlgorithm()
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285 | {
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286 | mCurrentAlgorithm = ++mCurrentAlgorithm % OcclusionCullingSceneTraverser::NUM_RENDERMODES;
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287 |
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288 | mAlgorithmInfo->setCaption(": " + mCurrentAlgorithmCaptions[mCurrentAlgorithm]);
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289 | mSceneMgr->setOption("Algorithm", &mCurrentAlgorithm);
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290 | }
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291 | //-----------------------------------------------------------------------
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292 | void MouseQueryListener::changeStats()
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293 | {
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294 | unsigned int opt = 0;
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295 | char str[100];
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296 |
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297 | mSceneMgr->getOption("NumFrustumCulledNodes", &opt); sprintf(str,": %d", opt);
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298 | mFrustumCulledNodesInfo->setCaption(str);
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299 |
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300 | mSceneMgr->getOption("NumQueryCulledNodes", &opt); sprintf(str,": %d", opt);
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301 | mQueryCulledNodesInfo->setCaption(str);
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302 |
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303 | mSceneMgr->getOption("NumTraversedNodes", &opt); sprintf(str,": %d", opt);
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304 | mTraversedNodesInfo->setCaption(str);
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305 | }
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306 | //-----------------------------------------------------------------------
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307 | void MouseQueryListener::keyPressed(KeyEvent* e)
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308 | {
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309 | if(e->getKey() == KC_ESCAPE)
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310 | {
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311 | mShutdownRequested = true;
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312 | e->consume();
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313 | return;
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314 | }
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315 |
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316 | CEGUI::System::getSingleton().injectKeyDown(e->getKey());
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317 | CEGUI::System::getSingleton().injectChar(e->getKeyChar());
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318 | e->consume();
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319 | }
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320 | //-----------------------------------------------------------------------
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321 | void MouseQueryListener::keyReleased(KeyEvent* e)
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322 | {
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323 | CEGUI::System::getSingleton().injectKeyUp(e->getKey());
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324 | e->consume();
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325 | }
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326 | //-----------------------------------------------------------------------
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327 | void MouseQueryListener::keyClicked(KeyEvent* e)
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328 | {
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329 | // Do nothing
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330 | e->consume();
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331 | }
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332 | //-----------------------------------------------------------------------
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333 | INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR strCmdLine, INT )
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334 | {
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335 | // Create application object
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336 | TestCullingApplication app;
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337 |
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338 | try
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339 | {
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340 | app.go();
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341 | }
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342 | catch( Ogre::Exception& e )
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343 | {
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344 | MessageBox( NULL, e.getFullDescription().c_str(), "An exception has occured!", MB_OK | MB_ICONERROR | MB_TASKMODAL);
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345 | }
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346 |
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347 | return 0;
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348 | } |
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