1 | /**
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2 | \file
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3 | TestCullingTerrainApplication.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 "TestCullingTerrainApplication.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* mRaySceneQuery = 0;
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23 |
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24 | /***********************************************/
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25 | /* TestCullingTerrainApplication implementation */
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26 | /***********************************************/
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27 | /*TestCullingTerrainApplication::~TestCullingTerrainApplication()
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28 | {
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29 | delete mRaySceneQuery;
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30 | }*/
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31 | //-----------------------------------------------------------------------
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32 | void TestCullingTerrainApplication::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 TestCullingTerrainApplication::createScene(void)
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47 | {
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48 | // Set ambient light
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49 | mSceneMgr->setAmbientLight(ColourValue(0.5, 0.5, 0.5));
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50 |
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51 | // Create a light
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52 | Light* l = mSceneMgr->createLight("MainLight");
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53 | // Accept default settings: point light, white diffuse, just set position
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54 | // NB I could attach the light to a SceneNode if I wanted it to move automatically with
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55 | // other objects, but I don't
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56 | l->setPosition(20,80,50);
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57 |
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58 | // --Fog
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59 | // NB it's VERY important to set this before calling setWorldGeometry
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60 | // because the vertex program picked will be different
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61 | ColourValue fadeColour(0.93, 0.86, 0.76);
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62 | mWindow->getViewport(0)->setBackgroundColour(fadeColour);
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63 | //mSceneMgr->setFog( FOG_LINEAR, fadeColour, .001, 500, 1000);
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64 | //mSceneMgr->setFog( FOG_EXP, fadeColour, 0.005 );
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65 |
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66 |
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67 |
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68 | // Create a skybox
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69 | //mSceneMgr->setSkyBox(true, "Examples/SpaceSkyBox", 500, false);
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70 | //mSceneMgr->setSkyDome( true, "Examples/CloudySky", 5, 8, 500, false );
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71 |
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72 | /* // Define the required skyplane
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73 | Plane plane;
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74 | // 5000 world units from the camera
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75 | plane.d = 5000;
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76 | // Above the camera, facing down
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77 | plane.normal = -Vector3::UNIT_Y;
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78 | // Create the plane 10000 units wide, tile the texture 3 times
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79 | mSceneMgr->setSkyPlane(true, plane, "Examples/SpaceSkyPlane",10000,3);*/
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80 |
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81 | std::string terrain_cfg("terrain.cfg");
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82 | #if OGRE_PLATFORM == OGRE_PLATFORM_APPLE
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83 | terrain_cfg = mResourcePath + terrain_cfg;
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84 | #endif
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85 | mSceneMgr -> setWorldGeometry( terrain_cfg );
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86 | // Infinite far plane?
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87 | if (mRoot->getRenderSystem()->getCapabilities()->hasCapability(RSC_INFINITE_FAR_PLANE))
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88 | {
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89 | mCamera->setFarClipDistance(0);
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90 | }
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91 |
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92 | // Set a nice viewpoint
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93 | mCamera->setPosition(707,2500,528);
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94 | mCamera->setOrientation(Quaternion(-0.3486, 0.0122, 0.9365, 0.0329));
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95 |
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96 | /*
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97 | Entity *robotEnt = mSceneMgr->createEntity( "Robot", "robot.mesh" );
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98 | SceneNode *robotNode = mSceneMgr->getRootSceneNode()->createChildSceneNode( "RobotNode", Vector3( 750, 25, 600 ));
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99 | robotNode->attachObject( robotEnt );
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100 | robotNode->scale( .3, .3, .3 );
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101 | robotNode->yaw( Degree( 160 ) );
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102 |
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103 | Entity *ogreEnt = mSceneMgr->createEntity( "Ogre", "ogrehead.mesh" );
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104 | SceneNode *ogreNode = mSceneMgr->getRootSceneNode()->createChildSceneNode( "Ogre", Vector3( 800, 50, 830 ) );
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105 | ogreNode->attachObject( ogreEnt );
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106 | ogreNode->scale(.2,.2,.2);
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107 | ogreNode->yaw( Degree( 20 ) );
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108 |
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109 | Entity *ogreEnt2 = mSceneMgr->createEntity( "Ogre2", "ogrehead.mesh" );
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110 | SceneNode *ogreNode2 = mSceneMgr->getRootSceneNode()->createChildSceneNode( "Ogre2", Vector3( 700, 50, 730 ) );
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111 | ogreNode2->attachObject( ogreEnt2 );
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112 | ogreNode2->scale(.05,.05,.05);
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113 | ogreNode->yaw( Degree( 40 ) );*/
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114 |
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115 | // CEGUI setup
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116 | setupGui();
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117 | }
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118 | //-----------------------------------------------------------------------
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119 | void TestCullingTerrainApplication::setupGui( void )
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120 | {
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121 | mGUIRenderer = new CEGUI::OgreCEGUIRenderer(mWindow, Ogre::RENDER_QUEUE_OVERLAY, false, 3000, ST_EXTERIOR_CLOSE);
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122 | mGUISystem = new CEGUI::System(mGUIRenderer);
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123 |
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124 | // Mouse
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125 | CEGUI::SchemeManager::getSingleton().loadScheme((CEGUI::utf8*)"TaharezLook.scheme");
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126 | CEGUI::MouseCursor::getSingleton().setImage("TaharezLook", "MouseArrow");
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127 | mGUISystem->setDefaultMouseCursor(
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128 | (CEGUI::utf8*)"TaharezLook", (CEGUI::utf8*)"MouseArrow");
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129 |
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130 | CEGUI::MouseCursor::getSingleton().show( );
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131 | }
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132 | //-----------------------------------------------------------------------
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133 | void TestCullingTerrainApplication::createFrameListener(void)
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134 | {
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135 | mFrameListener= new MouseQueryListener(mWindow, mCamera, mSceneMgr, mGUIRenderer);
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136 | mFrameListener->showDebugOverlay(true);
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137 | mRoot->addFrameListener(mFrameListener);
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138 | }
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139 | //-----------------------------------------------------------------------
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140 | void TestCullingTerrainApplication::chooseSceneManager(void)
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141 | {
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142 | //mSceneMgr = mRoot->getSceneManager(ST_GENERIC);
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143 | mSceneMgr = mRoot->getSceneManager(ST_EXTERIOR_CLOSE);
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144 | }
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145 |
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146 | /***********************************************/
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147 | /* MouseQueryListener implementation */
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148 | /***********************************************/
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149 | //-----------------------------------------------------------------------
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150 | MouseQueryListener::MouseQueryListener(RenderWindow* win, Camera* cam, SceneManager *sceneManager, CEGUI::Renderer *renderer)
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151 | : ExampleFrameListener(win, cam, false, true), mGUIRenderer(renderer),
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152 | mShutdownRequested(false)
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153 | {
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154 |
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155 | // Setup default variables
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156 | mCurrentObject = NULL;
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157 | mLMouseDown = false;
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158 | mRMouseDown = false;
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159 | mSceneMgr = sceneManager;
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160 |
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161 | // Reduce move speed
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162 | mMoveSpeed = 50;
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163 | mRotateSpeed *= 2;
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164 |
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165 | mCurrentAlgorithm = OcclusionCullingSceneTraverser::RENDER_COHERENT;
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166 | mThreshold = 0;
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167 |
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168 | // Register this so that we get mouse events.
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169 | mEventProcessor->addMouseListener(this);
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170 | mEventProcessor->addMouseMotionListener(this);
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171 | mEventProcessor->addKeyListener(this);
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172 |
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173 | mRaySceneQuery = mSceneMgr->createRayQuery( Ray() );
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174 |
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175 | // show overlay
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176 | Overlay* pOver = OverlayManager::getSingleton().getByName("Example/OcclusionCullingDemoOverlay");
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177 |
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178 | mAlgorithmInfo = OverlayManager::getSingleton().getOverlayElement("Example/Occlusion/AlgorithmInfo");
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179 | mThresholdInfo = OverlayManager::getSingleton().getOverlayElement("Example/Occlusion/ThresholdInfo");
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180 | mFrustumCulledNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Occlusion/FrustumCulledNodesInfo");
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181 | mQueryCulledNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Occlusion/QueryCulledNodesInfo");
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182 | mTraversedNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Occlusion/TraversedNodesInfo");
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183 | mSceneNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Occlusion/SceneNodesInfo");
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184 | mHierarchyNodesInfo = OverlayManager::getSingleton().getOverlayElement("Example/Occlusion/HierarchyNodesInfo");
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185 |
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186 | mAlgorithmInfo->setCaption(": " + mCurrentAlgorithmCaptions[mCurrentAlgorithm]);
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187 | mThresholdInfo->setCaption(": 0");
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188 | mFrustumCulledNodesInfo->setCaption(": 0");
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189 | mQueryCulledNodesInfo->setCaption(": 0");
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190 | mTraversedNodesInfo->setCaption(": 0");
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191 | mSceneNodesInfo->setCaption(": 0");
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192 | mHierarchyNodesInfo->setCaption(": 0");
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193 |
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194 | pOver->show();
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195 | }
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196 | //-----------------------------------------------------------------------
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197 | MouseQueryListener::~MouseQueryListener( )
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198 | {
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199 | delete mRaySceneQuery;
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200 | }
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201 | //-----------------------------------------------------------------------
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202 | void MouseQueryListener::mouseMoved (MouseEvent *e)
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203 | {
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204 | // Update CEGUI with the mouse motion
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205 | CEGUI::System::getSingleton().injectMouseMove(e->getRelX() * mGUIRenderer->getWidth(), e->getRelY() * mGUIRenderer->getHeight());
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206 | }
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207 | //-----------------------------------------------------------------------
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208 | void MouseQueryListener::mousePressed(MouseEvent* e)
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209 | {
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210 | // Left mouse button down
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211 | if (e->getButtonID() & InputEvent::BUTTON0_MASK)
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212 | {
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213 | CEGUI::MouseCursor::getSingleton().hide( );
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214 |
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215 | // Setup the ray scene query
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216 | Ray mouseRay = mCamera->getCameraToViewportRay( e->getX(), e->getY() );
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217 | mRaySceneQuery->setRay( mouseRay );
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218 |
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219 | // Execute query
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220 | RaySceneQueryResult &result = mRaySceneQuery->execute();
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221 | RaySceneQueryResult::iterator itr = result.begin( );
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222 |
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223 | // Get results, create a node/entity on the position
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224 | if ( itr != result.end() && itr->worldFragment )
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225 | {
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226 | char name[16];
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227 | sprintf( name, "Robot%d", mCount++ );
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228 |
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229 | Entity *ent = mSceneMgr->createEntity( name, "robot.mesh" );
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230 | mCurrentObject = mSceneMgr->getRootSceneNode( )->createChildSceneNode( String(name) + "Node", itr->worldFragment->singleIntersection );
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231 | mCurrentObject->attachObject( ent );
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232 | mCurrentObject->setScale( 0.1f, 0.1f, 0.1f );
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233 | }
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234 |
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235 | mLMouseDown = true;
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236 | }
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237 | // Right mouse button down
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238 | else if (e->getButtonID() & InputEvent::BUTTON1_MASK)
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239 | {
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240 | CEGUI::MouseCursor::getSingleton().hide( );
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241 | mRMouseDown = true;
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242 | } // else if
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243 | } // mousePressed
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244 |
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245 | //-----------------------------------------------------------------------
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246 | void MouseQueryListener::mouseReleased(MouseEvent* e)
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247 | {
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248 | // Left mouse button up
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249 | if (e->getButtonID() & InputEvent::BUTTON0_MASK)
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250 | {
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251 | CEGUI::MouseCursor::getSingleton().show( );
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252 | mLMouseDown = false;
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253 | }
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254 | // Right mouse button up
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255 | else if (e->getButtonID() & InputEvent::BUTTON1_MASK)
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256 | {
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257 | CEGUI::MouseCursor::getSingleton().show( );
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258 | mRMouseDown = false;
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259 | }
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260 | }
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261 | //-----------------------------------------------------------------------
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262 | void MouseQueryListener::mouseDragged (MouseEvent *e)
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263 | {
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264 | // If we are dragging the left mouse button.
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265 | if ( mLMouseDown )
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266 | {
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267 | Ray mouseRay = mCamera->getCameraToViewportRay( e->getX(), e->getY() );
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268 | mRaySceneQuery->setRay( mouseRay );
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269 |
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270 | RaySceneQueryResult &result = mRaySceneQuery->execute();
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271 | RaySceneQueryResult::iterator itr = result.begin( );
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272 |
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273 | if ( itr != result.end() && itr->worldFragment )
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274 | {
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275 | mCurrentObject->setPosition( itr->worldFragment->singleIntersection );
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276 | }
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277 | }
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278 | // If we are dragging the right mouse button.
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279 | if ( mRMouseDown )
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280 | {
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281 | mCamera->yaw( -e->getRelX() * mRotateSpeed );
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282 | mCamera->pitch( -e->getRelY() * mRotateSpeed );
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283 | }
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284 | }
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285 | //-----------------------------------------------------------------------
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286 | bool MouseQueryListener::frameStarted(const FrameEvent &evt)
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287 | {
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288 | // clamp to terrain
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289 | Vector3 camPos = mCamera->getPosition( );
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290 | Ray cameraRay( Vector3(camPos.x, 5000.0f, camPos.z), Vector3::NEGATIVE_UNIT_Y );
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291 | mRaySceneQuery->setRay( cameraRay );
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292 |
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293 | // Perform the scene query
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294 | RaySceneQueryResult &queryResult = mRaySceneQuery->execute();
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295 | RaySceneQueryResult::iterator it = queryResult.begin( );
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296 |
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297 | if (it != queryResult.end() && it->worldFragment)
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298 | {
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299 | SceneQuery::WorldFragment* wf = it->worldFragment;
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300 |
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301 | mCamera->setPosition(mCamera->getPosition().x, wf->singleIntersection.y + 10,
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302 | mCamera->getPosition().z);
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303 | }
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304 |
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305 | return ExampleFrameListener::frameStarted(evt);
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306 | }
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307 | //-----------------------------------------------------------------------
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308 | bool MouseQueryListener::frameEnded(const FrameEvent& evt)
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309 | {
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310 | if (mShutdownRequested)
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311 | return false;
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312 |
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313 | if (timeDelay >= 0)
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314 | timeDelay -= evt.timeSinceLastFrame;
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315 |
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316 | KEY_PRESSED(KC_SPACE, 0.3, changeAlgorithm());
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317 |
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318 | KEY_PRESSED(KC_SUBTRACT, 0, changeThreshold(-10));
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319 | KEY_PRESSED(KC_ADD, 0, changeThreshold(10));
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320 | //KEY_PRESSED(KC_T, 1, change);
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321 |
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322 | changeStats();
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323 |
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324 | return ExampleFrameListener::frameStarted(evt) && ExampleFrameListener::frameEnded(evt);
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325 | }
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326 | //-----------------------------------------------------------------------
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327 | void MouseQueryListener::changeThreshold(int incr)
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328 | {
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329 | mThreshold += incr; if(mThreshold < 0) mThreshold = 0;
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330 |
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331 | char str[100]; sprintf(str,": %d", mThreshold);
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332 |
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333 | mSceneMgr->setOption("Threshold", &mThreshold);
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334 | mThresholdInfo->setCaption(str);
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335 | }
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336 | //-----------------------------------------------------------------------
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337 | void MouseQueryListener::changeAlgorithm()
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338 | {
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339 | mCurrentAlgorithm = ++mCurrentAlgorithm % OcclusionCullingSceneTraverser::NUM_RENDERMODES;
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340 |
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341 | mAlgorithmInfo->setCaption(": " + mCurrentAlgorithmCaptions[mCurrentAlgorithm]);
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342 | mSceneMgr->setOption("Algorithm", &mCurrentAlgorithm);
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343 | }
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344 | //-----------------------------------------------------------------------
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345 | void MouseQueryListener::changeStats()
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346 | {
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347 | unsigned int opt = 0;
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348 | char str[100];
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349 |
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350 | mSceneMgr->getOption("NumFrustumCulledNodes", &opt); sprintf(str,": %d", opt);
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351 | mFrustumCulledNodesInfo->setCaption(str);
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352 |
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353 | mSceneMgr->getOption("NumQueryCulledNodes", &opt); sprintf(str,": %d", opt);
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354 | mQueryCulledNodesInfo->setCaption(str);
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355 |
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356 | mSceneMgr->getOption("NumTraversedNodes", &opt); sprintf(str,": %d", opt);
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357 | mTraversedNodesInfo->setCaption(str);
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358 |
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359 | mSceneMgr->getOption("NumSceneNodes", &opt); sprintf(str,": %d", opt);
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360 | mSceneNodesInfo->setCaption(str);
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361 |
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362 | mSceneMgr->getOption("NumOctreeNodes", &opt); sprintf(str,": %d", opt);
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363 | mHierarchyNodesInfo->setCaption(str);
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364 | }
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365 | //-----------------------------------------------------------------------
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366 | void MouseQueryListener::keyPressed(KeyEvent* e)
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367 | {
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368 | if(e->getKey() == KC_ESCAPE)
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369 | {
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370 | mShutdownRequested = true;
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371 | e->consume();
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372 | return;
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373 | }
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374 |
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375 | CEGUI::System::getSingleton().injectKeyDown(e->getKey());
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376 | CEGUI::System::getSingleton().injectChar(e->getKeyChar());
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377 | e->consume();
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378 | }
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379 | //-----------------------------------------------------------------------
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380 | void MouseQueryListener::keyReleased(KeyEvent* e)
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381 | {
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382 | CEGUI::System::getSingleton().injectKeyUp(e->getKey());
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383 | e->consume();
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384 | }
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385 | //-----------------------------------------------------------------------
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386 | void MouseQueryListener::keyClicked(KeyEvent* e)
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387 | {
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388 | // Do nothing
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389 | e->consume();
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390 | }
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391 | //-----------------------------------------------------------------------
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392 | INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR strCmdLine, INT )
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393 | {
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394 | // Create application object
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395 | TestCullingTerrainApplication app;
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396 |
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397 | try
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398 | {
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399 | app.go();
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400 | }
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401 | catch( Ogre::Exception& e )
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402 | {
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403 | MessageBox( NULL, e.getFullDescription().c_str(), "An exception has occured!", MB_OK | MB_ICONERROR | MB_TASKMODAL);
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404 | }
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405 |
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406 | return 0;
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407 | } |
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