1 | /* ==========================================================================
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2 | * (C) 2006 Universitat Jaume I
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3 | * ==========================================================================
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4 | * PROYECT: GAME TOOLS
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5 | * ==========================================================================*/
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6 | /** CONTENT:
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7 | *
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8 | *
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9 | * @file main.cpp
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10 | /** COMMENTS:
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11 | * Model must be in "media/models" folder.
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12 | * Lod file must be in "media/GT" folder.
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13 | /*===========================================================================*/
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14 | #include "ExampleApplication.h"
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15 | #include "GeoLodTreeLibrary.h"
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16 | #include "GeoMeshLoader.h"
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17 |
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18 |
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19 | // Distance values
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20 | #define dist_min 300
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21 | #define dist_max 700
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22 |
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23 | // Model name
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24 | #define model_name "arbol"
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25 |
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26 |
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27 | //Global variables
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28 | Entity* entity;
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29 | Geometry::LodTreeLibrary* myTrees;
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30 | Ogre::Mesh *ogreMesh=NULL;
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31 | Geometry::GeoMeshLoader *meshloader=NULL;
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32 | bool force_maxLODfactor = false;
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33 |
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34 | Ogre::Vector3 forest_center;
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35 |
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36 | ColourValue color=ColourValue::Red;
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37 |
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38 | Camera* theCam;
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39 | Entity* pPlaneEnt;
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40 |
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41 | OverlayElement* mInfo;
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42 | OverlayElement* mInfo2;
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43 |
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44 |
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45 | void DumpDataToOgreBuffers(Ogre::Mesh *original_mesh, Geometry::LodTreeLibrary *lodTreesLib)
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46 | {
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47 | // Copy to Ogre buffers including the degenerated triangles
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48 | Ogre::HardwareIndexBufferSharedPtr ibuf;
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49 | Ogre::IndexData *indexes;
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50 | Ogre::RenderOperation mRenderOp;
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51 |
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52 | for (int submesh=0; submesh < original_mesh->getNumSubMeshes(); submesh++)
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53 | {
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54 | bool istrunk = lodTreesLib->GetLeavesSubMesh()!=submesh;
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55 | original_mesh->getSubMesh(submesh)->_getRenderOperation(mRenderOp,0);
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56 |
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57 | // we will suppose this submesh is the foliage
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58 | int indices_to_render = lodTreesLib->CurrentLOD_Foliage_IndexCount();
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59 | int offset = 0;
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60 |
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61 | if (istrunk)
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62 | {
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63 | // this submesh is the trunk
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64 | offset = lodTreesLib->GetValidTrunkOffset(submesh);
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65 | indices_to_render = lodTreesLib->GetValidTrunkIndexCount(submesh);
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66 | }
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67 |
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68 | ibuf = mRenderOp.indexData->indexBuffer;
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69 | mRenderOp.indexData->indexStart = 0;
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70 | mRenderOp.indexData->indexCount = indices_to_render;
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71 |
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72 | unsigned long* pIdx = static_cast<unsigned long*>(ibuf->lock(Ogre::HardwareBuffer::HBL_NORMAL));
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73 |
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74 | for (int k=0; k<indices_to_render; k++)
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75 | if (istrunk)
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76 | pIdx[k] = lodTreesLib->CurrentLOD_Trunk_Indices()->GetIndex(k+offset);
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77 | else
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78 | pIdx[k] = lodTreesLib->CurrentLOD_Foliage_Indices()->GetIndex(k);
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79 |
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80 |
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81 | ibuf->unlock();
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82 | }
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83 | }
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84 |
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85 | class FresnelFrameListener : public ExampleFrameListener
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86 | {
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87 | int manage;
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88 |
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89 | public:
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90 |
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91 | FresnelFrameListener(RenderWindow* win, Camera* cam)
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92 | : ExampleFrameListener(win, cam, false, false)
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93 | {
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94 | manage=1;
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95 | }
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96 |
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97 | bool frameStarted(const FrameEvent& evt)
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98 | {
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99 | Vector3 dist;
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100 | int distance=0,inc2=0,d;
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101 | unsigned int nlod,diflods;
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102 |
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103 | // Move upto 80 units/second
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104 | Real MoveFactor = 180.0 * evt.timeSinceLastFrame;
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105 |
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106 | // Copy the current state of the input devices
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107 | mInputDevice->capture();
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108 |
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109 | // If this is the first frame, pick a speed
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110 | if (evt.timeSinceLastFrame == 0)
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111 | {
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112 | mMoveScale = 1;
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113 | mRotScale = 0.1;
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114 | }
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115 | // Otherwise scale movement units by time passed since last frame
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116 | else
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117 | {
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118 | // Move about 100 units per second,
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119 | mMoveScale = mMoveSpeed * evt.timeSinceLastFrame;
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120 | // Take about 10 seconds for full rotation
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121 | mRotScale = mRotateSpeed * evt.timeSinceLastFrame;
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122 | }
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123 |
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124 | mRotX = 0;
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125 | mRotY = 0;
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126 | mTranslateVector = Vector3::ZERO;
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127 |
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128 | //LOD selection
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129 | int difdist = dist_max - dist_min;
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130 |
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131 | int i=0;
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132 |
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133 | dist = forest_center - mCamera->getPosition();
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134 | distance =dist.length();
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135 |
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136 | float lodfactor = (float)(distance - dist_min) / (float)(dist_max - dist_min);
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137 | lodfactor = 1.0f - lodfactor;
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138 |
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139 | if (lodfactor<0.0f)
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140 | lodfactor=0.0f;
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141 | if (lodfactor>1.0f)
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142 | lodfactor=1.0f;
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143 |
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144 | if (force_maxLODfactor)
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145 | lodfactor=1.0f;
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146 |
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147 | static float lodfactorBefore = -1.0f;
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148 | if (fabsf(lodfactorBefore-lodfactor)>0.05f)
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149 | {
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150 | myTrees->GoToLod(lodfactor);
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151 | DumpDataToOgreBuffers(ogreMesh,myTrees);
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152 | lodfactorBefore=lodfactor;
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153 | }
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154 |
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155 | // Move the node
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156 | if(mInputDevice->isKeyDown(Ogre::KC_UP))
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157 | mTranslateVector.z = -mMoveScale;
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158 |
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159 |
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160 | if(mInputDevice->isKeyDown(Ogre::KC_DOWN))
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161 | mTranslateVector.z = mMoveScale;
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162 |
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163 | // Instead of moving the ship left and right, rotate it using yaw()
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164 | if(mInputDevice->isKeyDown(Ogre::KC_LEFT))
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165 | mCamera->yaw(mRotScale);
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166 |
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167 | force_maxLODfactor=mInputDevice->isKeyDown(Ogre::KC_F2);
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168 |
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169 | if(mInputDevice->isKeyDown(Ogre::KC_RIGHT))
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170 | mCamera->yaw(-mRotScale);
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171 |
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172 | if(mInputDevice->isKeyDown(Ogre::KC_ESCAPE))
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173 | {
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174 | //delete myTrees;
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175 | return false;
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176 | }
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177 |
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178 | if( mInputDevice->getMouseButton( 1 ) )
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179 | {
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180 | mTranslateVector.x += mInputDevice->getMouseRelativeX() * 0.13;
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181 | mTranslateVector.y -= mInputDevice->getMouseRelativeY() * 0.13;
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182 | }
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183 | else
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184 | {
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185 | mRotX = Degree(-mInputDevice->getMouseRelativeX() * 0.13);
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186 | mRotY = Degree(-mInputDevice->getMouseRelativeY() * 0.13);
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187 | }
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188 |
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189 |
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190 | char cadena[256];
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191 |
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192 |
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193 | sprintf(cadena,"Distance: %d",distance);
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194 |
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195 | mInfo->setCaption(cadena);
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196 |
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197 | sprintf(cadena,"LOD factor: %f",lodfactor);
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198 |
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199 | mInfo2->setCaption(cadena);
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200 |
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201 | mCamera->yaw(mRotX);
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202 | mCamera->pitch(mRotY);
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203 | mCamera->moveRelative(mTranslateVector);
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204 |
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205 | return true;
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206 | }
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207 | };
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208 |
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209 | class FresnelApplication : public ExampleApplication
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210 | {
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211 | protected:
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212 | public:
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213 | FresnelApplication()
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214 | {
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215 | }
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216 |
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217 | ~FresnelApplication()
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218 | {
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219 | }
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220 | protected:
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221 |
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222 |
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223 |
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224 | // Just override the mandatory create scene method
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225 | void createScene(void)
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226 | {
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227 | // mat = new MaterialPtr[1];
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228 |
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229 | theCam = mCamera;
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230 | theCam->setPosition(0,20,dist_min-40);
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231 | // Set ambient light
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232 | mSceneMgr->setAmbientLight(ColourValue(0.4, 0.4, 0.4));
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233 |
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234 | // Create a directional light
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235 | Light* l = mSceneMgr->createLight("MainLight");
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236 | l->setType(Light::LT_DIRECTIONAL);
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237 | l->setDirection(0.0,-1.0,0.0);
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238 |
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239 | // Define a floor plane mesh
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240 | Plane plane( Vector3::UNIT_Y, 0 );
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241 |
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242 | MeshManager::getSingleton().createPlane("ground",
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243 | ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, plane,
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244 | 1500,1500,20,20,true,1,5,5,Vector3::UNIT_Z);
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245 |
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246 | Entity* suelo = mSceneMgr->createEntity( "GroundEntity", "ground" );
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247 | mSceneMgr->getRootSceneNode()->createChildSceneNode()->attachObject(suelo);
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248 |
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249 |
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250 | suelo->setMaterialName("Examples/GrassFloor");
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251 | suelo->setCastShadows(false);
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252 |
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253 |
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254 | mSceneMgr->setSkyBox(true, "Examples/CloudyNoonSkyBox");
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255 |
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256 | // My node to which all objects will be attached
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257 | SceneNode* myRootNode = mSceneMgr->getRootSceneNode()->createChildSceneNode();
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258 |
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259 | std::string model_file=model_name;
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260 | model_file.append(".mesh");
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261 |
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262 | //Models
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263 | entity = mSceneMgr->createEntity(model_name, "../../../OgreStuff/media/GT/ML12m.mesh");
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264 |
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265 | ogreMesh = entity->getMesh().getPointer();
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266 |
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267 | // load LOD info from the object
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268 | meshloader=new Geometry::GeoMeshLoader;
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269 | Geometry::Mesh *themesh = meshloader->load("../../../OgreStuff/media/GT/ML12m.mesh");
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270 |
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271 | if (!meshloader->GetLodStripsData())
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272 | OGRE_EXCEPT(1, "The loaded mesh does not contain LOD info for the trunk","LOD Demo");
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273 | if (!meshloader->GetTreeSimpSeq())
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274 | OGRE_EXCEPT(1, "The loaded mesh does not contain LOD info for the foliage","LOD Demo");
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275 |
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276 | myTrees = new Geometry::LodTreeLibrary(meshloader->GetLodStripsData(),meshloader->GetTreeSimpSeq(),themesh);
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277 |
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278 | entity->setNormaliseNormals(true);
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279 |
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280 | for (int submesh=0; submesh < ogreMesh->getNumSubMeshes(); submesh++)
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281 | {
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282 | bool istrunk = myTrees->GetLeavesSubMesh()!=submesh;
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283 | if (istrunk)
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284 | entity->getSubEntity(submesh)->setMaterialName("Examples/Populifolia/trunk");
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285 | else
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286 | entity->getSubEntity(submesh)->setMaterialName("Examples/Populifolia/leaf");
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287 | }
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288 |
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289 | forest_center=Ogre::Vector3(150.0f,0.0f,0.0f);
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290 | for (int i=1; i<8; i++) // 20
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291 | for (int j=1; j<8; j++) // 20
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292 | {
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293 | char newTreeName[16]="";
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294 | sprintf(newTreeName,"arbol_%d_%d",i,j);
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295 | Ogre::SceneNode * auxnode = mSceneMgr->getRootSceneNode()->createChildSceneNode();
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296 | Ogre::Entity *auxent = entity->clone(newTreeName);
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297 | auxnode->attachObject( auxent );
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298 | auxnode->scale(4.0f,4.0f,4.0f);
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299 | auxnode->rotate(Ogre::Vector3(0,0,1),Ogre::Degree(rand()%360));
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300 | auxnode->rotate(Ogre::Vector3(1,0,0),Ogre::Radian(-3.14159f*0.5f),Ogre::Node::TS_WORLD);
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301 | float randomsepx = (float)((rand()%18)-9);
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302 | float randomsepy = (float)((rand()%12)-6);
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303 | auxnode->translate(i*30.0f+randomsepx,0.0f,-j*30.0f-randomsepx);
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304 | auxent->setNormaliseNormals(true);
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305 | }
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306 |
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307 | if (!meshloader->GetLodStripsData() || !meshloader->GetTreeSimpSeq())
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308 | OGRE_EXCEPT(1, "The loaded mesh does not contain any LOD info","LOD Demo");
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309 |
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310 |
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311 | // show overlay
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312 | Overlay* pOver = OverlayManager::getSingleton().getByName("Demo_LodStrips/Overlay");
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313 | mInfo = OverlayManager::getSingleton().getOverlayElement("Demo_LodStrips/Info_1");
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314 | mInfo2 = OverlayManager::getSingleton().getOverlayElement("Demo_LodStrips/Info_2");
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315 | pOver->show();
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316 |
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317 | }
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318 |
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319 | void createFrameListener(void)
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320 | {
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321 | mFrameListener= new FresnelFrameListener(mWindow, mCamera);
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322 | mFrameListener->showDebugOverlay(true);
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323 | mRoot->addFrameListener(mFrameListener);
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324 | }
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325 |
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326 | };
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327 |
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328 |
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329 |
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330 | #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
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331 | #define WIN32_LEAN_AND_MEAN
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332 | #include "windows.h"
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333 | #endif
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334 |
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335 | #ifdef __cplusplus
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336 | extern "C" {
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337 | #endif
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338 |
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339 | #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
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340 | INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR strCmdLine, INT )
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341 | #else
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342 | int main(int argc, char **argv)
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343 | #endif
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344 | {
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345 | // Create application object
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346 | FresnelApplication app;
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347 |
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348 | try {
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349 | app.go();
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350 | } catch( Exception& e ) {
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351 | #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
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352 | MessageBox( NULL, e.getFullDescription().c_str(), "An exception has occured!", MB_OK | MB_ICONERROR | MB_TASKMODAL);
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353 | #else
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354 | std::cerr << "An exception has occured: " << e.getFullDescription();
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355 | #endif
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356 | }
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357 |
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358 |
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359 | return 0;
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360 | }
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361 |
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362 | #ifdef __cplusplus
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363 | }
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364 | #endif
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