1 | /** |
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2 | Demo of Deferred Shading in OGRE using Multiple Render Targets and HLSL/GLSL high level |
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3 | language shaders. |
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4 | // W.J. :wumpus: van der Laan 2005 // |
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5 | |
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6 | Deferred shading renders the scene to a 'fat' texture format, using a shader that outputs colour, |
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7 | normal, depth, and possible other attributes per fragment. Multi Render Target is required as we |
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8 | are dealing with many outputs which get written into multiple render textures in the same pass. |
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9 | |
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10 | After rendering the scene in this format, the shading (lighting) can be done as a post process. |
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11 | This means that lighting is done in screen space. Adding them requires nothing more than rendering |
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12 | a screenful quad; thus the method allows for an enormous amount of lights without noticable |
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13 | performance loss. |
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14 | |
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15 | Little lights affecting small area ("Minilights") can be even further optimised by rendering |
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16 | their convex bounding geometry. This is also shown in this demo by 6 swarming lights. |
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17 | |
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18 | The paper for GDC2004 on Deferred Shading can be found here: |
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19 | http://www.talula.demon.co.uk/DeferredShading.pdf |
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20 | |
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21 | This demo source file is in the public domain. |
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22 | */ |
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23 | |
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24 | #include "Ogre.h" |
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25 | #include "ExampleApplication.h" |
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26 | #include "ExampleFrameListener.h" |
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27 | |
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28 | #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32 |
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29 | #define WIN32_LEAN_AND_MEAN |
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30 | #include "windows.h" |
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31 | #endif |
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32 | |
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33 | #include "DeferredShading.h" |
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34 | #include "MLight.h" |
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35 | #include "CreateSphere.h" |
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36 | class SharedData : public Ogre::Singleton<SharedData> { |
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37 | |
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38 | public: |
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39 | |
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40 | SharedData() |
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41 | : iRoot(0), |
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42 | iCamera(0), |
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43 | iWindow(0), |
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44 | mAnimState(0), |
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45 | mMLAnimState(0), |
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46 | iLight1(0), iLight2(0) |
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47 | { |
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48 | iActivate = false; |
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49 | } |
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50 | |
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51 | ~SharedData() {} |
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52 | |
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53 | // shared data across the application |
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54 | Real iLastFrameTime; |
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55 | Root *iRoot; |
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56 | Camera *iCamera; |
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57 | RenderWindow *iWindow; |
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58 | |
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59 | DeferredShadingSystem *iSystem; |
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60 | bool iActivate; |
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61 | bool iGlobalActivate; |
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62 | |
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63 | // Animation state for big lights |
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64 | AnimationState* mAnimState; |
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65 | // Animation state for light swarm |
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66 | AnimationState* mMLAnimState; |
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67 | |
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68 | // overlay stuff.. too lazy to do a good thing for it |
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69 | SceneManager *iSceneMgr; |
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70 | RenderTarget *iSceneTarget; |
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71 | |
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72 | MLight *iLight1, *iLight2; |
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73 | |
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74 | std::vector<Node*> mLightNodes; |
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75 | |
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76 | }; |
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77 | template<> SharedData* Singleton<SharedData>::ms_Singleton = 0; |
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78 | |
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79 | class RenderToTextureFrameListener : public ExampleFrameListener |
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80 | { |
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81 | protected: |
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82 | Real timeoutDelay ; |
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83 | Vector3 oldCamPos; |
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84 | Quaternion oldCamOri; |
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85 | DeferredShadingSystem::DSMode mode; |
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86 | public: |
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87 | RenderToTextureFrameListener(RenderWindow* window, Camera* maincam) |
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88 | :ExampleFrameListener(window, maincam), |
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89 | oldCamPos(0,0,0), oldCamOri(0,0,0,0) |
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90 | { |
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91 | timeoutDelay = 0; |
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92 | mMoveSpeed = 200; |
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93 | mode = (DeferredShadingSystem::DSMode)1; |
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94 | } |
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95 | |
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96 | bool frameStarted(const FrameEvent& evt) |
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97 | { |
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98 | if( ExampleFrameListener::frameStarted(evt) == false ) |
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99 | return false; |
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100 | |
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101 | SharedData::getSingleton().iLastFrameTime = evt.timeSinceLastFrame; |
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102 | |
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103 | if (SharedData::getSingleton().mAnimState) |
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104 | SharedData::getSingleton().mAnimState->addTime(evt.timeSinceLastFrame); |
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105 | if (SharedData::getSingleton().mMLAnimState) |
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106 | SharedData::getSingleton().mMLAnimState->addTime(evt.timeSinceLastFrame); |
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107 | |
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108 | // Only update fat buffer if something changed |
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109 | bool somethingChanged = false; |
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110 | if(mCamera->getPosition()!=oldCamPos || mCamera->getOrientation()!=oldCamOri) |
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111 | { |
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112 | somethingChanged = true; |
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113 | oldCamPos = mCamera->getPosition(); |
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114 | oldCamOri = mCamera->getOrientation(); |
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115 | } |
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116 | |
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117 | if(somethingChanged) |
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118 | SharedData::getSingleton().iSystem->update(); |
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119 | return true; |
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120 | } |
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121 | |
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122 | virtual bool processUnbufferedKeyInput(const FrameEvent& evt) { |
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123 | using namespace OIS; |
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124 | bool retval = ExampleFrameListener::processUnbufferedKeyInput(evt); |
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125 | |
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126 | // "C" switch filters |
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127 | if (mKeyboard->isKeyDown(KC_C) && timeoutDelay==0) |
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128 | { |
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129 | timeoutDelay = 0.5f; |
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130 | |
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131 | mode = (DeferredShadingSystem::DSMode)((int)mode+1); |
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132 | if(mode == DeferredShadingSystem::DSM_COUNT) |
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133 | mode = (DeferredShadingSystem::DSMode)1; |
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134 | |
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135 | SharedData::getSingleton().iSystem->setMode( mode ); |
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136 | |
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137 | updateOverlays(); |
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138 | } |
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139 | |
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140 | // "B" activate/deactivate minilight rendering |
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141 | if (mKeyboard->isKeyDown(KC_B) && timeoutDelay==0) |
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142 | { |
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143 | timeoutDelay = 0.5f; |
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144 | SharedData::getSingleton().iActivate = !SharedData::getSingleton().iActivate; |
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145 | // Hide/show all minilights |
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146 | std::vector<Node*>::iterator i = SharedData::getSingleton().mLightNodes.begin(); |
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147 | std::vector<Node*>::iterator iend = SharedData::getSingleton().mLightNodes.end(); |
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148 | for(; i!=iend; ++i) |
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149 | { |
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150 | static_cast<SceneNode*>(*i)->setVisible(SharedData::getSingleton().iActivate, true); |
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151 | } |
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152 | |
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153 | updateOverlays(); |
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154 | } |
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155 | // "G" activate/deactivate global light rendering |
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156 | if (mKeyboard->isKeyDown(KC_G) && timeoutDelay==0) |
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157 | { |
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158 | timeoutDelay = 0.5f; |
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159 | SharedData::getSingleton().iGlobalActivate = !SharedData::getSingleton().iGlobalActivate; |
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160 | SharedData::getSingleton().iLight1->setVisible(SharedData::getSingleton().iGlobalActivate); |
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161 | SharedData::getSingleton().iLight2->setVisible(SharedData::getSingleton().iGlobalActivate); |
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162 | updateOverlays(); |
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163 | } |
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164 | |
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165 | timeoutDelay -= evt.timeSinceLastFrame; |
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166 | if (timeoutDelay <= 0) timeoutDelay = 0; |
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167 | |
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168 | return retval; |
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169 | } |
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170 | |
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171 | void updateOverlays() |
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172 | { |
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173 | |
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174 | OverlayManager::getSingleton().getOverlayElement( "Example/Shadows/ShadowTechniqueInfo" ) |
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175 | ->setCaption( "" ); |
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176 | |
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177 | OverlayManager::getSingleton().getOverlayElement( "Example/Shadows/MaterialInfo" ) |
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178 | ->setCaption( ""); |
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179 | |
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180 | OverlayManager::getSingleton().getOverlayElement( "Example/Shadows/ShadowTechnique" ) |
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181 | ->setCaption( "[B] MiniLights active: " + StringConverter::toString( SharedData::getSingleton().iActivate ) ); |
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182 | |
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183 | std::string name; |
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184 | switch(mode) |
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185 | { |
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186 | case DeferredShadingSystem::DSM_SINGLEPASS: |
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187 | name="SinglePass"; break; |
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188 | case DeferredShadingSystem::DSM_MULTIPASS: |
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189 | name="MultiPass"; break; |
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190 | case DeferredShadingSystem::DSM_SHOWCOLOUR: |
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191 | name="ShowColour"; break; |
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192 | case DeferredShadingSystem::DSM_SHOWNORMALS: |
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193 | name="ShowNormals"; break; |
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194 | case DeferredShadingSystem::DSM_SHOWDSP: |
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195 | name="ShowDSP"; break; |
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196 | } |
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197 | OverlayManager::getSingleton().getOverlayElement( "Example/Shadows/Materials" ) |
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198 | ->setCaption( "[C] Change mode, current is \"" + name + "\""); |
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199 | |
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200 | OverlayManager::getSingleton().getOverlayElement( "Example/Shadows/Info" ) |
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201 | ->setCaption( "[G] Global lights active: " + StringConverter::toString( SharedData::getSingleton().iGlobalActivate ) ); |
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202 | |
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203 | } |
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204 | }; |
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205 | |
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206 | |
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207 | class RenderToTextureApplication : public ExampleApplication, public RenderTargetListener |
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208 | { |
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209 | public: |
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210 | RenderToTextureApplication() : mPlane(0) { |
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211 | new SharedData(); |
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212 | mPlane = 0; |
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213 | mSystem = 0; |
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214 | } |
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215 | |
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216 | ~RenderToTextureApplication() |
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217 | { |
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218 | delete ( SharedData::getSingletonPtr() ); |
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219 | |
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220 | delete mPlane; |
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221 | delete mSystem; |
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222 | } |
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223 | |
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224 | |
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225 | protected: |
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226 | MovablePlane* mPlane; |
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227 | Entity* mPlaneEnt; |
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228 | SceneNode* mPlaneNode; |
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229 | DeferredShadingSystem *mSystem; |
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230 | |
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231 | // Just override the mandatory create scene method |
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232 | void createScene(void) |
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233 | { |
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234 | RenderSystem *rs = Root::getSingleton().getRenderSystem(); |
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235 | const RenderSystemCapabilities* caps = rs->getCapabilities(); |
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236 | if (!caps->hasCapability(RSC_VERTEX_PROGRAM) || !(caps->hasCapability(RSC_FRAGMENT_PROGRAM))) |
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237 | { |
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238 | OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "Your card does not support vertex and fragment programs, so cannot " |
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239 | "run this demo. Sorry!", |
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240 | "DeferredShading::createScene"); |
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241 | } |
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242 | if (caps->numMultiRenderTargets()<2) |
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243 | { |
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244 | OGRE_EXCEPT(Exception::ERR_NOT_IMPLEMENTED, "Your card does not support at least two simulataneous render targets, so cannot " |
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245 | "run this demo. Sorry!", |
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246 | "DeferredShading::createScene"); |
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247 | } |
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248 | MovableObject::setDefaultVisibilityFlags(0x00000001); |
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249 | mSceneMgr->setVisibilityMask(0x00000001); |
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250 | // Prepare athene mesh for normalmapping |
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251 | MeshPtr pAthene = MeshManager::getSingleton().load("athene.mesh", |
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252 | ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME); |
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253 | unsigned short src, dest; |
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254 | if (!pAthene->suggestTangentVectorBuildParams(VES_TANGENT, src, dest)) |
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255 | pAthene->buildTangentVectors(VES_TANGENT, src, dest); |
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256 | // Prepare knot mesh for normal mapping |
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257 | pAthene = MeshManager::getSingleton().load("knot.mesh", |
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258 | ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME); |
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259 | if (!pAthene->suggestTangentVectorBuildParams(VES_TANGENT, src, dest)) |
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260 | pAthene->buildTangentVectors(VES_TANGENT, src, dest); |
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261 | |
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262 | // Set ambient light |
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263 | mSceneMgr->setAmbientLight(ColourValue(0.2, 0.2, 0.15)); |
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264 | // Skybox |
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265 | mSceneMgr->setSkyBox(true, "Test13/SkyBox"); |
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266 | |
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267 | // Create "root" node |
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268 | SceneNode* rootNode = mSceneMgr->getRootSceneNode()->createChildSceneNode(); |
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269 | |
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270 | // Create a prefab plane |
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271 | mPlane = new MovablePlane("ReflectPlane"); |
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272 | mPlane->d = 0; |
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273 | mPlane->normal = Vector3::UNIT_Y; |
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274 | MeshManager::getSingleton().createCurvedPlane("ReflectionPlane", |
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275 | ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, |
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276 | *mPlane, |
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277 | 2000, 2000, -1000, |
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278 | 20, 20, |
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279 | true, 1, 10, 10, Vector3::UNIT_Z); |
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280 | mPlaneEnt = mSceneMgr->createEntity( "Plane", "ReflectionPlane" ); |
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281 | mPlaneNode = rootNode->createChildSceneNode(); |
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282 | mPlaneNode->attachObject(mPlaneEnt); |
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283 | mPlaneNode->translate(-5, -30, 0); |
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284 | //mPlaneNode->roll(Degree(5)); |
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285 | mPlaneEnt->setMaterialName("Test13/Ground"); |
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286 | |
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287 | // Create an entity from a model (will be loaded automatically) |
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288 | Entity* knotEnt = mSceneMgr->createEntity("Knot", "knot.mesh"); |
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289 | knotEnt->setMaterialName("Test13/RockWall"); |
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290 | knotEnt->setMeshLodBias(0.25f); |
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291 | |
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292 | // Create an entity from a model (will be loaded automatically) |
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293 | Entity* ogreHead = mSceneMgr->createEntity("Head", "ogrehead.mesh"); |
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294 | ogreHead->getSubEntity(0)->setMaterialName("Test13/DeferredOgre/Eyes");// eyes |
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295 | ogreHead->getSubEntity(1)->setMaterialName("Test13/DeferredOgre/Skin"); |
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296 | ogreHead->getSubEntity(2)->setMaterialName("Test13/DeferredOgre/EarRing"); // earrings |
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297 | ogreHead->getSubEntity(3)->setMaterialName("Test13/DeferredOgre/Tusks"); // tusks |
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298 | rootNode->createChildSceneNode( "Head" )->attachObject( ogreHead ); |
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299 | |
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300 | Entity* athena = mSceneMgr->createEntity("Athena", "athene.mesh"); |
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301 | athena->setMaterialName("Test13/DeferredAthena"); |
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302 | SceneNode *aNode = rootNode->createChildSceneNode(); |
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303 | aNode->attachObject( athena ); |
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304 | aNode->setPosition(-100, 40, 100); |
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305 | |
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306 | // Add a whole bunch of extra entities to fill the scene a bit |
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307 | Entity *cloneEnt; |
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308 | int N=4; |
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309 | for (int n = 0; n < N; ++n) |
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310 | { |
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311 | float theta = 2.0f*Math::PI*(float)n/(float)N; |
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312 | // Create a new node under the root |
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313 | SceneNode* node = mSceneMgr->createSceneNode(); |
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314 | // Random translate |
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315 | Vector3 nodePos; |
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316 | nodePos.x = Math::SymmetricRandom() * 40.0 + Math::Sin(theta) * 500.0; |
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317 | nodePos.y = Math::SymmetricRandom() * 20.0 - 40.0; |
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318 | nodePos.z = Math::SymmetricRandom() * 40.0 + Math::Cos(theta) * 500.0; |
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319 | node->setPosition(nodePos); |
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320 | Quaternion orientation(Math::SymmetricRandom(),Math::SymmetricRandom(),Math::SymmetricRandom(),Math::SymmetricRandom()); |
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321 | orientation.normalise(); |
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322 | node->setOrientation(orientation); |
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323 | rootNode->addChild(node); |
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324 | // Clone knot |
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325 | char cloneName[12]; |
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326 | sprintf(cloneName, "Knot%d", n); |
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327 | cloneEnt = knotEnt->clone(cloneName); |
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328 | // Attach to new node |
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329 | node->attachObject(cloneEnt); |
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330 | |
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331 | } |
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332 | |
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333 | mCamera->setPosition(-50, 100, 500); |
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334 | mCamera->lookAt(0,0,0); |
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335 | |
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336 | // show overlay |
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337 | Overlay* overlay = OverlayManager::getSingleton().getByName("Example/ShadowsOverlay"); |
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338 | overlay->show(); |
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339 | |
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340 | mSystem = new DeferredShadingSystem(mWindow->getViewport(0), mSceneMgr, mCamera); |
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341 | |
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342 | |
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343 | // Create a light |
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344 | MLight* l = mSystem->createMLight();//"SunLight"); |
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345 | //l->setType(Light::LT_POINT); |
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346 | //l->setPosition(600.0, 1000.0, 200.0); |
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347 | l->setDiffuseColour(1.0f, 0.6f, 0.2f); |
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348 | l->setSpecularColour(0.3f, 0.15f, 0.06f); |
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349 | //l->setDiffuseColour(0.0f, 0.0f, 0.0f); |
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350 | //l->setSpecularColour(0.0f, 0.0f, 0.0f); |
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351 | |
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352 | // Create moving light |
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353 | MLight* l2 = mSystem->createMLight();//"MainLight2"); |
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354 | //l2->setType(Light::LT_POINT); |
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355 | l2->setDiffuseColour(0.75f, 0.7f, 0.8f); |
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356 | l2->setSpecularColour(0.85f, 0.9f, 1.0f); |
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357 | |
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358 | SceneNode *lightNode = mSceneMgr->getRootSceneNode()->createChildSceneNode(); |
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359 | lightNode->attachObject(l2); |
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360 | |
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361 | // Create a track for the light |
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362 | Animation* anim = mSceneMgr->createAnimation("LightTrack", 16); |
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363 | // Spline it for nice curves |
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364 | anim->setInterpolationMode(Animation::IM_SPLINE); |
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365 | // Create a track to animate the camera's node |
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366 | NodeAnimationTrack* track = anim->createNodeTrack(0, lightNode); |
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367 | // Setup keyframes |
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368 | TransformKeyFrame* key = track->createNodeKeyFrame(0); // A startposition |
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369 | key->setTranslate(Vector3(300,300,-300)); |
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370 | key = track->createNodeKeyFrame(4);//B |
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371 | key->setTranslate(Vector3(300,300,300)); |
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372 | key = track->createNodeKeyFrame(8);//C |
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373 | key->setTranslate(Vector3(-300,300,300)); |
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374 | key = track->createNodeKeyFrame(12);//D |
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375 | key->setTranslate(Vector3(-300,300,-300)); |
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376 | key = track->createNodeKeyFrame(16);//D |
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377 | key->setTranslate(Vector3(300,300,-300)); |
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378 | // Create a new animation state to track this |
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379 | SharedData::getSingleton().mAnimState = mSceneMgr->createAnimationState("LightTrack"); |
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380 | SharedData::getSingleton().mAnimState->setEnabled(true); |
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381 | |
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382 | // Create some happy little lights |
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383 | createSampleLights(); |
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384 | |
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385 | // safely setup application's (not postfilter!) shared data |
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386 | SharedData::getSingleton().iCamera = mCamera; |
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387 | SharedData::getSingleton().iRoot = mRoot; |
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388 | SharedData::getSingleton().iWindow = mWindow; |
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389 | SharedData::getSingleton().iActivate = true; |
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390 | SharedData::getSingleton().iGlobalActivate = true; |
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391 | SharedData::getSingleton().iSceneMgr = mSceneMgr; |
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392 | SharedData::getSingleton().iSystem = mSystem; |
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393 | SharedData::getSingleton().iLight1 = l; |
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394 | SharedData::getSingleton().iLight2 = l2; |
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395 | } |
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396 | |
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397 | void createFrameListener(void) |
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398 | { |
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399 | mFrameListener= new RenderToTextureFrameListener(mWindow, mCamera); |
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400 | // initialize overlays |
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401 | static_cast<RenderToTextureFrameListener*>(mFrameListener)->updateOverlays(); |
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402 | mRoot->addFrameListener(mFrameListener); |
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403 | } |
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404 | |
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405 | void createSampleLights() |
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406 | { |
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407 | // Create some lights |
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408 | std::vector<MLight*> lights; |
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409 | SceneNode *parentNode = mSceneMgr->getRootSceneNode()->createChildSceneNode("LightsParent"); |
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410 | // Create light nodes |
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411 | std::vector<Node*> nodes; |
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412 | |
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413 | MLight *a = mSystem->createMLight(); |
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414 | SceneNode *an = parentNode->createChildSceneNode(); |
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415 | an->attachObject(a); |
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416 | a->setAttenuation(1.0f, 0.001f, 0.002f); |
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417 | //a->setAttenuation(1.0f, 0.000f, 0.000f); |
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418 | an->setPosition(0,0,25); |
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419 | a->setDiffuseColour(1,0,0); |
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420 | //a->setSpecularColour(0.5,0,0); |
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421 | lights.push_back(a); |
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422 | nodes.push_back(an); |
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423 | |
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424 | MLight *b = mSystem->createMLight(); |
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425 | SceneNode *bn = parentNode->createChildSceneNode(); |
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426 | bn->attachObject(b); |
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427 | b->setAttenuation(1.0f, 0.001f, 0.003f); |
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428 | bn->setPosition(25,0,0); |
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429 | b->setDiffuseColour(1,1,0); |
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430 | //b->setSpecularColour(0.5,0.5,0); |
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431 | lights.push_back(b); |
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432 | nodes.push_back(bn); |
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433 | |
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434 | MLight *c = mSystem->createMLight(); |
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435 | SceneNode *cn = parentNode->createChildSceneNode(); |
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436 | cn->attachObject(c); |
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437 | c->setAttenuation(1.0f, 0.001f, 0.004f); |
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438 | cn->setPosition(0,0,-25); |
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439 | c->setDiffuseColour(0,1,1); |
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440 | c->setSpecularColour(0.25,1.0,1.0); // Cyan light has specular component |
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441 | lights.push_back(c); |
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442 | nodes.push_back(cn); |
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443 | |
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444 | MLight *d = mSystem->createMLight(); |
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445 | SceneNode *dn = parentNode->createChildSceneNode(); |
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446 | dn->attachObject(d); |
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447 | d->setAttenuation(1.0f, 0.002f, 0.002f); |
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448 | dn->setPosition(-25,0,0); |
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449 | d->setDiffuseColour(1,0,1); |
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450 | d->setSpecularColour(0.0,0,0.0); |
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451 | lights.push_back(d); |
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452 | nodes.push_back(dn); |
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453 | |
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454 | MLight *e = mSystem->createMLight(); |
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455 | SceneNode *en = parentNode->createChildSceneNode(); |
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456 | en->attachObject(e); |
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457 | e->setAttenuation(1.0f, 0.002f, 0.0025f); |
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458 | en->setPosition(25,0,25); |
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459 | e->setDiffuseColour(0,0,1); |
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460 | e->setSpecularColour(0,0,0); |
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461 | lights.push_back(e); |
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462 | nodes.push_back(en); |
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463 | |
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464 | MLight *f = mSystem->createMLight(); |
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465 | SceneNode *fn = parentNode->createChildSceneNode(); |
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466 | fn->attachObject(f); |
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467 | f->setAttenuation(1.0f, 0.0015f, 0.0021f); |
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468 | fn->setPosition(-25,0,-25); |
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469 | f->setDiffuseColour(0,1,0); |
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470 | f->setSpecularColour(0,0.0,0.0); |
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471 | lights.push_back(f); |
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472 | nodes.push_back(fn); |
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473 | |
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474 | // Create marker meshes to show user where the lights are |
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475 | Entity *ent; |
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476 | createSphere("PointLightMesh", 1.0f, 5, 5); |
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477 | for(std::vector<MLight*>::iterator i=lights.begin(); i!=lights.end(); ++i) |
---|
478 | { |
---|
479 | ent = mSceneMgr->createEntity((*i)->getName()+"v", "PointLightMesh"); |
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480 | String matname = (*i)->getName()+"m"; |
---|
481 | // Create coloured material |
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482 | MaterialPtr mat = MaterialManager::getSingleton().create(matname, |
---|
483 | ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME); |
---|
484 | Pass* pass = mat->getTechnique(0)->getPass(0); |
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485 | pass->setDiffuse(0.0f,0.0f,0.0f,1.0f); |
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486 | pass->setAmbient(0.0f,0.0f,0.0f); |
---|
487 | pass->setSelfIllumination((*i)->getDiffuseColour()); |
---|
488 | |
---|
489 | ent->setMaterialName(matname); |
---|
490 | ent->setVisibilityFlags(DeferredShadingSystem::PostVisibilityMask); |
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491 | static_cast<SceneNode*>((*i)->getParentNode())->attachObject(ent); |
---|
492 | } |
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493 | |
---|
494 | // Store nodes for hiding/showing |
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495 | SharedData::getSingleton().mLightNodes = nodes; |
---|
496 | |
---|
497 | // Do some animation for node a-f |
---|
498 | // Generate helix structure |
---|
499 | float seconds_per_station = 1.0f; |
---|
500 | float r=35; |
---|
501 | //Vector3 base(0,-30,0); |
---|
502 | Vector3 base(-100, -30, 85); |
---|
503 | |
---|
504 | float h=120; |
---|
505 | const size_t s_to_top = 16; |
---|
506 | const size_t stations = s_to_top*2-1; |
---|
507 | float ascend = h/((float)s_to_top); |
---|
508 | float stations_per_revolution = 3.5f; |
---|
509 | size_t skip = 2; // stations between lights |
---|
510 | Vector3 station_pos[stations]; |
---|
511 | for(int x=0; x<s_to_top; ++x) |
---|
512 | { |
---|
513 | float theta = ((float)x/stations_per_revolution)*2.0f*Math::PI; |
---|
514 | station_pos[x] = base+Vector3(Math::Sin(theta)*r, ascend*x, Math::Cos(theta)*r); |
---|
515 | } |
---|
516 | for(int x=s_to_top; x<stations; ++x) |
---|
517 | { |
---|
518 | float theta = ((float)x/stations_per_revolution)*2.0f*Math::PI; |
---|
519 | station_pos[x] = base+Vector3(Math::Sin(theta)*r, h-ascend*(x-s_to_top), Math::Cos(theta)*r); |
---|
520 | } |
---|
521 | // Create a track for the light swarm |
---|
522 | Animation* anim = mSceneMgr->createAnimation("LightSwarmTrack", stations*seconds_per_station); |
---|
523 | // Spline it for nice curves |
---|
524 | anim->setInterpolationMode(Animation::IM_SPLINE); |
---|
525 | for(unsigned int x=0; x<nodes.size(); ++x) |
---|
526 | { |
---|
527 | // Create a track to animate the camera's node |
---|
528 | NodeAnimationTrack* track = anim->createNodeTrack(x, nodes[x]); |
---|
529 | for(int y=0; y<=stations; ++y) |
---|
530 | { |
---|
531 | // Setup keyframes |
---|
532 | TransformKeyFrame* key = track->createNodeKeyFrame(y*seconds_per_station); // A startposition |
---|
533 | key->setTranslate(station_pos[(x*skip+y)%stations]); |
---|
534 | // Make sure size of light doesn't change |
---|
535 | key->setScale(nodes[x]->getScale()); |
---|
536 | } |
---|
537 | } |
---|
538 | // Create a new animation state to track this |
---|
539 | SharedData::getSingleton().mMLAnimState = mSceneMgr->createAnimationState("LightSwarmTrack"); |
---|
540 | SharedData::getSingleton().mMLAnimState->setEnabled(true); |
---|
541 | } |
---|
542 | |
---|
543 | }; |
---|
544 | |
---|
545 | |
---|
546 | |
---|
547 | |
---|
548 | |
---|
549 | #ifdef __cplusplus |
---|
550 | extern "C" { |
---|
551 | #endif |
---|
552 | |
---|
553 | //#if OGRE_PLATFORM == OGRE_PLATFORM_WIN32 |
---|
554 | // INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR strCmdLine, INT ) |
---|
555 | //#else |
---|
556 | int main(int argc, char *argv[]) |
---|
557 | //#endif |
---|
558 | { |
---|
559 | // Create application object |
---|
560 | RenderToTextureApplication app; |
---|
561 | |
---|
562 | try { |
---|
563 | app.go(); |
---|
564 | } catch( Ogre::Exception& e ) { |
---|
565 | #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32 |
---|
566 | MessageBox( NULL, e.getFullDescription().c_str(), "An exception has occured!", MB_OK | MB_ICONERROR | MB_TASKMODAL); |
---|
567 | #else |
---|
568 | std::cerr << "An exception has occured: " << |
---|
569 | e.getFullDescription().c_str() << std::endl; |
---|
570 | #endif |
---|
571 | } |
---|
572 | |
---|
573 | return 0; |
---|
574 | } |
---|
575 | |
---|
576 | #ifdef __cplusplus |
---|
577 | } |
---|
578 | #endif |
---|
579 | |
---|
580 | |
---|