[5] | 1 | /* |
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| 2 | ----------------------------------------------------------------------------- |
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| 3 | This source file is part of OGRE |
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| 4 | (Object-oriented Graphics Rendering Engine) |
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| 5 | For the latest info, see http://www.ogre3d.org/ |
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| 6 | |
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| 7 | Copyright (c) 2000-2006 Torus Knot Software Ltd |
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| 8 | Also see acknowledgements in Readme.html |
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| 9 | |
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| 10 | You may use this sample code for anything you like, it is not covered by the |
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| 11 | LGPL like the rest of the engine. |
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| 12 | ----------------------------------------------------------------------------- |
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| 13 | */ |
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| 14 | |
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| 15 | /** |
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| 16 | \file |
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| 17 | Lighting.h |
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| 18 | \brief |
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| 19 | Shows lighting support in OGRE. Also demonstrates the use of billboards |
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| 20 | and controllers for automatic time-relative behaviour. |
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| 21 | */ |
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| 22 | |
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| 23 | |
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| 24 | #include "ExampleApplication.h" |
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| 25 | |
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| 26 | |
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| 27 | /** This class turns lights & billboards linked to them on & off */ |
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| 28 | class LightFlasher : public ControllerValue<Real> |
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| 29 | { |
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| 30 | protected: |
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| 31 | Light* mLight; |
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| 32 | Billboard* mBillboard; |
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| 33 | ColourValue mMaxColour; |
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| 34 | Real intensity; |
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| 35 | public: |
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| 36 | LightFlasher(Light* light, Billboard* billboard, ColourValue maxColour) |
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| 37 | { |
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| 38 | mLight = light; |
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| 39 | mBillboard = billboard; |
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| 40 | mMaxColour = maxColour; |
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| 41 | } |
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| 42 | |
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| 43 | virtual Real getValue (void) const |
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| 44 | { |
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| 45 | return intensity; |
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| 46 | } |
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| 47 | |
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| 48 | virtual void setValue (Real value) |
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| 49 | { |
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| 50 | intensity = value; |
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| 51 | |
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| 52 | ColourValue newColour; |
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| 53 | |
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| 54 | // Attenuate the brightness of the light |
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| 55 | newColour.r = mMaxColour.r * intensity; |
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| 56 | newColour.g = mMaxColour.g * intensity; |
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| 57 | newColour.b = mMaxColour.b * intensity; |
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| 58 | |
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| 59 | mLight->setDiffuseColour(newColour); |
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| 60 | mBillboard->setColour(newColour); |
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| 61 | } |
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| 62 | }; |
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| 63 | |
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| 64 | |
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| 65 | /** Controller function mapping waveform to light intensity */ |
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| 66 | class LightFlasherControllerFunction : public WaveformControllerFunction |
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| 67 | { |
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| 68 | public: |
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| 69 | LightFlasherControllerFunction(WaveformType wavetype, Real frequency, Real phase) : WaveformControllerFunction(wavetype, 0, frequency, phase, 1, true) |
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| 70 | { |
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| 71 | |
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| 72 | } |
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| 73 | }; |
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| 74 | |
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| 75 | |
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| 76 | // Some global node data |
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| 77 | SceneNode* mRedYellowLightsNode; |
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| 78 | SceneNode* mGreenBlueLightsNode; |
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| 79 | std::vector<AnimationState*> mAnimStateList; |
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| 80 | |
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| 81 | |
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| 82 | // Listener class for frame updates |
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| 83 | class LightingListener : public ExampleFrameListener |
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| 84 | { |
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| 85 | protected: |
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| 86 | public: |
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| 87 | LightingListener(RenderWindow* win, Camera* cam) |
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| 88 | : ExampleFrameListener(win, cam) |
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| 89 | { |
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| 90 | } |
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| 91 | |
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| 92 | bool frameStarted(const FrameEvent& evt) |
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| 93 | { |
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| 94 | if( ExampleFrameListener::frameStarted(evt) == false ) |
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| 95 | return false; |
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| 96 | |
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| 97 | std::vector<AnimationState*>::iterator animi; |
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| 98 | for (animi = mAnimStateList.begin(); animi != mAnimStateList.end(); ++animi) |
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| 99 | { |
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| 100 | (*animi)->addTime(evt.timeSinceLastFrame); |
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| 101 | } |
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| 102 | |
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| 103 | return true; |
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| 104 | } |
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| 105 | }; |
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| 106 | |
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| 107 | /** Application class */ |
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| 108 | class LightingApplication : public ExampleApplication |
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| 109 | { |
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| 110 | protected: |
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| 111 | |
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| 112 | // The set of all the billboards used for the lights |
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| 113 | // 2 sets because we'll rotate them differently |
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| 114 | BillboardSet* mRedYellowLights; |
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| 115 | BillboardSet* mGreenBlueLights; |
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| 116 | |
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| 117 | // Billboards |
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| 118 | Billboard* mRedLightBoard; |
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| 119 | Billboard* mBlueLightBoard; |
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| 120 | Billboard* mYellowLightBoard; |
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| 121 | Billboard* mGreenLightBoard; |
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| 122 | |
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| 123 | // Lights |
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| 124 | Light* mRedLight; |
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| 125 | Light* mBlueLight; |
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| 126 | Light* mYellowLight; |
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| 127 | Light* mGreenLight; |
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| 128 | |
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| 129 | |
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| 130 | // Light flashers |
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| 131 | ControllerValueRealPtr mRedLightFlasher; |
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| 132 | ControllerValueRealPtr mBlueLightFlasher; |
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| 133 | ControllerValueRealPtr mYellowLightFlasher; |
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| 134 | ControllerValueRealPtr mGreenLightFlasher; |
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| 135 | |
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| 136 | // Light controller functions |
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| 137 | ControllerFunctionRealPtr mRedLightControllerFunc; |
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| 138 | ControllerFunctionRealPtr mBlueLightControllerFunc; |
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| 139 | ControllerFunctionRealPtr mYellowLightControllerFunc; |
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| 140 | ControllerFunctionRealPtr mGreenLightControllerFunc; |
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| 141 | |
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| 142 | // Light controllers |
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| 143 | Controller<Real>* mRedLightController; |
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| 144 | Controller<Real>* mBlueLightController; |
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| 145 | Controller<Real>* mYellowLightController; |
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| 146 | Controller<Real>* mGreenLightController; |
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| 147 | |
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| 148 | void createScene(void) |
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| 149 | { |
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| 150 | // Set a very low level of ambient lighting |
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| 151 | mSceneMgr->setAmbientLight(ColourValue(0.1, 0.1, 0.1)); |
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| 152 | |
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| 153 | // Use the "Space" skybox |
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| 154 | mSceneMgr->setSkyBox(true, "Examples/SpaceSkyBox"); |
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| 155 | |
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| 156 | // Load ogre head |
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| 157 | Entity* head = mSceneMgr->createEntity("head", "ogrehead.mesh"); |
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| 158 | |
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| 159 | // Attach the head to the scene |
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| 160 | mSceneMgr->getRootSceneNode()->attachObject(head); |
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| 161 | |
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| 162 | /* |
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| 163 | // Create nodes for the lights to be rotated with |
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| 164 | mRedYellowLightsNode = mSceneMgr->getRootSceneNode()->createChildSceneNode(); |
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| 165 | mGreenBlueLightsNode = mSceneMgr->getRootSceneNode()->createChildSceneNode(); |
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| 166 | |
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| 167 | |
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| 168 | // First create the BillboardSets. This will define the materials for the billboards |
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| 169 | // in its set to use |
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| 170 | mRedYellowLights = mSceneMgr->createBillboardSet("RedYellowLights"); |
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| 171 | mRedYellowLights->setMaterialName("Examples/Flare"); |
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| 172 | mRedYellowLightsNode->attachObject(mRedYellowLights); |
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| 173 | |
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| 174 | mGreenBlueLights = mSceneMgr->createBillboardSet("GreenBlueLights"); |
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| 175 | mGreenBlueLights->setMaterialName("Examples/Flare"); |
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| 176 | mGreenBlueLightsNode->attachObject(mGreenBlueLights); |
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| 177 | |
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| 178 | // Red light billboard, in "off" state |
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| 179 | Vector3 redLightPosition(78, -8, -70); |
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| 180 | mRedLightBoard = mRedYellowLights->createBillboard(redLightPosition); |
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| 181 | mRedLightBoard->setColour(ColourValue::Black); |
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| 182 | |
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| 183 | |
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| 184 | // Blue light billboard, in "off" state |
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| 185 | Vector3 blueLightPosition(-90, -8, -70); |
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| 186 | mBlueLightBoard = mGreenBlueLights->createBillboard(blueLightPosition); |
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| 187 | mBlueLightBoard->setColour(ColourValue::Black); |
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| 188 | |
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| 189 | |
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| 190 | // Yellow light billboard, in "off" state |
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| 191 | Vector3 yellowLightPosition(-4.5, 30, -80); |
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| 192 | mYellowLightBoard = mRedYellowLights->createBillboard(yellowLightPosition); |
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| 193 | mYellowLightBoard->setColour(ColourValue::Black); |
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| 194 | |
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| 195 | // Green light billboard, in "off" state |
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| 196 | Vector3 greenLightPosition(50, 70, 80); |
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| 197 | mGreenLightBoard = mGreenBlueLights->createBillboard(greenLightPosition); |
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| 198 | mGreenLightBoard->setColour(ColourValue::Black); |
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| 199 | |
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| 200 | // Red light, in "off" state |
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| 201 | mRedLight = mSceneMgr->createLight("RedFlyingLight"); |
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| 202 | mRedLight->setType(Light::LT_POINT); |
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| 203 | mRedLight->setPosition(redLightPosition); |
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| 204 | mRedLight->setDiffuseColour(ColourValue::Black); |
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| 205 | mRedYellowLightsNode->attachObject(mRedLight); |
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| 206 | |
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| 207 | // Blue light, in "off" state |
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| 208 | mBlueLight = mSceneMgr->createLight("BlueFlyingLight"); |
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| 209 | mBlueLight->setType(Light::LT_POINT); |
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| 210 | mBlueLight->setPosition(blueLightPosition); |
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| 211 | mBlueLight->setDiffuseColour(ColourValue::Black); |
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| 212 | mGreenBlueLightsNode->attachObject(mBlueLight); |
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| 213 | |
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| 214 | // Yellow light in "off" state |
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| 215 | mYellowLight = mSceneMgr->createLight("YellowFlyingLight"); |
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| 216 | mYellowLight->setType(Light::LT_POINT); |
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| 217 | mYellowLight->setPosition(yellowLightPosition); |
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| 218 | mYellowLight->setDiffuseColour(ColourValue::Black); |
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| 219 | mRedYellowLightsNode->attachObject(mYellowLight); |
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| 220 | |
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| 221 | // Yellow light in "off" state |
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| 222 | mGreenLight = mSceneMgr->createLight("GreenFlyingLight"); |
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| 223 | mGreenLight->setType(Light::LT_POINT); |
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| 224 | mGreenLight->setPosition(greenLightPosition); |
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| 225 | mGreenLight->setDiffuseColour(ColourValue::Black); |
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| 226 | mGreenBlueLightsNode->attachObject(mGreenLight); |
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| 227 | |
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| 228 | // Light flashers |
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| 229 | mRedLightFlasher = ControllerValueRealPtr( |
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| 230 | new LightFlasher(mRedLight, mRedLightBoard, ColourValue::Red)); |
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| 231 | mBlueLightFlasher = ControllerValueRealPtr( |
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| 232 | new LightFlasher(mBlueLight, mBlueLightBoard, ColourValue::Blue)); |
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| 233 | mYellowLightFlasher = ControllerValueRealPtr( |
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| 234 | new LightFlasher(mYellowLight, mYellowLightBoard, ColourValue(1.0, 1.0, 0.0))); |
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| 235 | mGreenLightFlasher = ControllerValueRealPtr( |
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| 236 | new LightFlasher(mGreenLight, mGreenLightBoard, ColourValue::Green)); |
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| 237 | |
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| 238 | // Light controller functions |
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| 239 | mRedLightControllerFunc = ControllerFunctionRealPtr( |
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| 240 | new LightFlasherControllerFunction(Ogre::WFT_SINE, 0.5, 0.0)); |
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| 241 | mBlueLightControllerFunc = ControllerFunctionRealPtr( |
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| 242 | new LightFlasherControllerFunction(Ogre::WFT_SINE, 0.75, 0.5)); |
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| 243 | mYellowLightControllerFunc = ControllerFunctionRealPtr( |
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| 244 | new LightFlasherControllerFunction(Ogre::WFT_TRIANGLE, 0.25, 0.0)); |
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| 245 | mGreenLightControllerFunc = ControllerFunctionRealPtr( |
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| 246 | new LightFlasherControllerFunction(Ogre::WFT_SINE, 0.25, 0.5)); |
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| 247 | |
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| 248 | // Light controllers |
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| 249 | ControllerManager* mControllerManager = &ControllerManager::getSingleton(); |
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| 250 | mRedLightController = mControllerManager->createController(mControllerManager->getFrameTimeSource(), mRedLightFlasher, mRedLightControllerFunc); |
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| 251 | mBlueLightController = mControllerManager->createController(mControllerManager->getFrameTimeSource(), mBlueLightFlasher, mBlueLightControllerFunc); |
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| 252 | mYellowLightController = mControllerManager->createController(mControllerManager->getFrameTimeSource(), mYellowLightFlasher, mYellowLightControllerFunc); |
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| 253 | mGreenLightController = mControllerManager->createController(mControllerManager->getFrameTimeSource(), mGreenLightFlasher, mGreenLightControllerFunc); |
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| 254 | |
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| 255 | */ |
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| 256 | |
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| 257 | setupTrailLights(); |
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| 258 | |
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| 259 | } |
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| 260 | |
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| 261 | void setupTrailLights(void) |
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| 262 | { |
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| 263 | mSceneMgr->setAmbientLight(ColourValue(0.5, 0.5, 0.5)); |
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| 264 | Vector3 dir(-1, -1, 0.5); |
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| 265 | dir.normalise(); |
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| 266 | Light* l = mSceneMgr->createLight("light1"); |
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| 267 | l->setType(Light::LT_DIRECTIONAL); |
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| 268 | l->setDirection(dir); |
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| 269 | |
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| 270 | NameValuePairList pairList; |
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| 271 | pairList["numberOfChains"] = "2"; |
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| 272 | pairList["maxElements"] = "80"; |
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| 273 | RibbonTrail* trail = static_cast<RibbonTrail*>( |
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| 274 | mSceneMgr->createMovableObject("1", "RibbonTrail", &pairList)); |
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| 275 | trail->setMaterialName("Examples/LightRibbonTrail"); |
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| 276 | trail->setTrailLength(400); |
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| 277 | |
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| 278 | |
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| 279 | mSceneMgr->getRootSceneNode()->createChildSceneNode()->attachObject(trail); |
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| 280 | |
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| 281 | // Create 3 nodes for trail to follow |
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| 282 | SceneNode* animNode = mSceneMgr->getRootSceneNode()->createChildSceneNode(); |
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| 283 | animNode->setPosition(50,30,0); |
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| 284 | Animation* anim = mSceneMgr->createAnimation("an1", 14); |
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| 285 | anim->setInterpolationMode(Animation::IM_SPLINE); |
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| 286 | NodeAnimationTrack* track = anim->createNodeTrack(1, animNode); |
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| 287 | TransformKeyFrame* kf = track->createNodeKeyFrame(0); |
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| 288 | kf->setTranslate(Vector3(50,30,0)); |
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| 289 | kf = track->createNodeKeyFrame(2); |
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| 290 | kf->setTranslate(Vector3(100, -30, 0)); |
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| 291 | kf = track->createNodeKeyFrame(4); |
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| 292 | kf->setTranslate(Vector3(120, -100, 150)); |
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| 293 | kf = track->createNodeKeyFrame(6); |
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| 294 | kf->setTranslate(Vector3(30, -100, 50)); |
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| 295 | kf = track->createNodeKeyFrame(8); |
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| 296 | kf->setTranslate(Vector3(-50, 30, -50)); |
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| 297 | kf = track->createNodeKeyFrame(10); |
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| 298 | kf->setTranslate(Vector3(-150, -20, -100)); |
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| 299 | kf = track->createNodeKeyFrame(12); |
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| 300 | kf->setTranslate(Vector3(-50, -30, 0)); |
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| 301 | kf = track->createNodeKeyFrame(14); |
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| 302 | kf->setTranslate(Vector3(50,30,0)); |
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| 303 | |
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| 304 | AnimationState* animState = mSceneMgr->createAnimationState("an1"); |
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| 305 | animState->setEnabled(true); |
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| 306 | mAnimStateList.push_back(animState); |
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| 307 | |
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| 308 | trail->setInitialColour(0, 1.0, 0.8, 0); |
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| 309 | trail->setColourChange(0, 0.5, 0.5, 0.5, 0.5); |
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| 310 | trail->setInitialWidth(0, 5); |
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| 311 | trail->addNode(animNode); |
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| 312 | |
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| 313 | // Add light |
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| 314 | Light* l2 = mSceneMgr->createLight("l2"); |
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| 315 | l2->setDiffuseColour(trail->getInitialColour(0)); |
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| 316 | animNode->attachObject(l2); |
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| 317 | |
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| 318 | // Add billboard |
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| 319 | BillboardSet* bbs = mSceneMgr->createBillboardSet("bb", 1); |
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| 320 | bbs->createBillboard(Vector3::ZERO, trail->getInitialColour(0)); |
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| 321 | bbs->setMaterialName("Examples/Flare"); |
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| 322 | animNode->attachObject(bbs); |
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| 323 | |
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| 324 | animNode = mSceneMgr->getRootSceneNode()->createChildSceneNode(); |
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| 325 | animNode->setPosition(-50,100,0); |
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| 326 | anim = mSceneMgr->createAnimation("an2", 10); |
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| 327 | anim->setInterpolationMode(Animation::IM_SPLINE); |
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| 328 | track = anim->createNodeTrack(1, animNode); |
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| 329 | kf = track->createNodeKeyFrame(0); |
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| 330 | kf->setTranslate(Vector3(-50,100,0)); |
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| 331 | kf = track->createNodeKeyFrame(2); |
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| 332 | kf->setTranslate(Vector3(-100, 150, -30)); |
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| 333 | kf = track->createNodeKeyFrame(4); |
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| 334 | kf->setTranslate(Vector3(-200, 0, 40)); |
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| 335 | kf = track->createNodeKeyFrame(6); |
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| 336 | kf->setTranslate(Vector3(0, -150, 70)); |
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| 337 | kf = track->createNodeKeyFrame(8); |
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| 338 | kf->setTranslate(Vector3(50, 0, 30)); |
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| 339 | kf = track->createNodeKeyFrame(10); |
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| 340 | kf->setTranslate(Vector3(-50,100,0)); |
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| 341 | |
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| 342 | animState = mSceneMgr->createAnimationState("an2"); |
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| 343 | animState->setEnabled(true); |
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| 344 | mAnimStateList.push_back(animState); |
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| 345 | |
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| 346 | trail->setInitialColour(1, 0.0, 1.0, 0.4); |
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| 347 | trail->setColourChange(1, 0.5, 0.5, 0.5, 0.5); |
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| 348 | trail->setInitialWidth(1, 5); |
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| 349 | trail->addNode(animNode); |
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| 350 | |
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| 351 | |
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| 352 | // Add light |
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| 353 | l2 = mSceneMgr->createLight("l3"); |
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| 354 | l2->setDiffuseColour(trail->getInitialColour(1)); |
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| 355 | animNode->attachObject(l2); |
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| 356 | |
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| 357 | // Add billboard |
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| 358 | bbs = mSceneMgr->createBillboardSet("bb2", 1); |
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| 359 | bbs->createBillboard(Vector3::ZERO, trail->getInitialColour(1)); |
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| 360 | bbs->setMaterialName("Examples/Flare"); |
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| 361 | animNode->attachObject(bbs); |
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| 362 | |
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| 363 | |
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| 364 | } |
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| 365 | |
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| 366 | void createFrameListener(void) |
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| 367 | { |
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| 368 | // This is where we instantiate our own frame listener |
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| 369 | mFrameListener= new LightingListener(mWindow, mCamera); |
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| 370 | mRoot->addFrameListener(mFrameListener); |
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| 371 | |
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| 372 | } |
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| 373 | |
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| 374 | }; |
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