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 40
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21 | #define dist_max 800
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22 |
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23 | //Global variables
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24 | Geometry::GeoMeshLoader *meshloader=NULL;
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25 | bool force_maxLODfactor = false;
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26 | const int num_tree_types=10;
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27 | Vector3 *centers=NULL;
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28 |
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29 | ColourValue color=ColourValue::Red;
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30 |
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31 | Camera* theCam;
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32 | Entity* pPlaneEnt;
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33 |
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34 | OverlayElement* mInfo;
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35 | OverlayElement* mInfo2;
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36 | OverlayElement* mHelp;
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37 |
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38 | char HelpString[]="(F1) Quit Help\n"
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39 | "This demo shows an example of the LodTree model in action. The scene is composed of\n"
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40 | "several tree groups which are associated to a LodTree object that manage the level\n"
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41 | "of detail of both their trunk and leaves. The level of detail of the objects depends\n"
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42 | "on the distance to the camera. When the camera goes away from them, the level of detail\n"
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43 | "decreases, and when the camera gets closer to them increases to restore the original\n"
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44 | "geometry of the model.\n"
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45 | "The level of detail begins to decrease at a certain distance of each group, and stops\n"
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46 | "decreasing when the objects reach the their minimum LOD. This 'lodding' distance is\n"
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47 | "customizable from the source code of the demo.\n"
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48 | "The user can compare the differences in performance disabling the LOD management while\n"
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49 | "maintaining pressed F2.";
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50 |
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51 | char NoHelpString[]="\n\n\n\n\n\n\n\n\n\n\n\n\n(F1) Help\n";
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52 |
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53 |
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54 |
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55 |
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56 | class LodTreeFrameListener : public ExampleFrameListener
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57 | {
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58 | int manage;
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59 | Ogre::RaySceneQuery * raySceneQuery;
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60 | float *lodfactorBefore; // one lodfactor per LOD object type
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61 | Geometry::LodTreeLibrary **lod_tree_types;
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62 |
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63 | Ogre::TexturePtr shadow_map;
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64 |
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65 | public:
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66 |
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67 | LodTreeFrameListener(RenderWindow* win, Camera* cam,RaySceneQuery *rsq,Geometry::LodTreeLibrary **lod_trees)
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68 | : ExampleFrameListener(win, cam, false, false)
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69 | {
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70 | manage=1;
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71 | raySceneQuery=rsq;
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72 | lodfactorBefore=new float[num_tree_types];
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73 | for (int i=0; i<num_tree_types; i++)
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74 | lodfactorBefore[i]=-1;
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75 | lod_tree_types=lod_trees;
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76 | }
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77 |
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78 | bool frameStarted(const FrameEvent& evt)
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79 | {
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80 | static bool firstFrame=true;
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81 | if (firstFrame)
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82 | {
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83 | CalculateShadowMap();
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84 | firstFrame=false;
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85 | }
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86 |
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87 | // Move upto 80 units/second
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88 | Real MoveFactor = 120.0 * evt.timeSinceLastFrame;
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89 |
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90 | // Copy the current state of the input devices
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91 | mInputDevice->capture();
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92 |
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93 | // If this is the first frame, pick a speed
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94 | if (evt.timeSinceLastFrame == 0)
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95 | {
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96 | mMoveScale = 1;
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97 | mRotScale = 0.1;
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98 | }
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99 | // Otherwise scale movement units by time passed since last frame
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100 | else
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101 | {
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102 | // Move about 100 units per second,
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103 | mMoveScale = mMoveSpeed * evt.timeSinceLastFrame;
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104 | // Take about 10 seconds for full rotation
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105 | mRotScale = mRotateSpeed * evt.timeSinceLastFrame;
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106 | }
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107 |
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108 | mRotX = 0;
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109 | mRotY = 0;
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110 | mTranslateVector = Vector3::ZERO;
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111 |
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112 | //LOD selection
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113 | for (int i=0; i<num_tree_types; i++)
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114 | {
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115 | Vector3 dist = centers[i] - mCamera->getPosition();
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116 | int distance = dist.length();
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117 |
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118 | float lodfactor = 0.0f;
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119 | if (distance < dist_min)
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120 | lodfactor = 1.0f;
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121 | else if (distance > dist_max)
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122 | lodfactor = 0.0f;
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123 | else
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124 | {
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125 | lodfactor = (float)(distance - dist_min) / (float)(dist_max - dist_min);
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126 | lodfactor = 1.0f - lodfactor;
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127 | }
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128 |
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129 | assert(lodfactor>=0.0f);
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130 | assert(lodfactor<=1.0f);
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131 |
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132 | if (force_maxLODfactor)
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133 | lodfactor=1.0f;
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134 |
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135 | if (fabsf(lodfactorBefore[i]-lodfactor)>0.1f)
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136 | {
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137 | lod_tree_types[i]->GoToLod(lodfactor);
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138 | lodfactorBefore[i]=lodfactor;
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139 | }
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140 | }
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141 |
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142 | // Move the cam
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143 | if(mInputDevice->isKeyDown(Ogre::KC_UP) ||
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144 | mInputDevice->isKeyDown(Ogre::KC_W) ||
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145 | mInputDevice->isKeyDown(Ogre::KC_NUMPAD5))
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146 | mTranslateVector.z = -mMoveScale;
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147 |
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148 | if(mInputDevice->isKeyDown(Ogre::KC_DOWN) ||
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149 | mInputDevice->isKeyDown(Ogre::KC_S) ||
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150 | mInputDevice->isKeyDown(Ogre::KC_NUMPAD2))
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151 | mTranslateVector.z = mMoveScale;
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152 |
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153 | if (mInputDevice->isKeyDown(Ogre::KC_A) ||
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154 | mInputDevice->isKeyDown(Ogre::KC_NUMPAD1))
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155 | mTranslateVector.x = -mMoveScale;
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156 |
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157 | if (mInputDevice->isKeyDown(Ogre::KC_D) ||
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158 | mInputDevice->isKeyDown(Ogre::KC_NUMPAD3))
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159 | mTranslateVector.x = mMoveScale;
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160 |
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161 | if(mInputDevice->isKeyDown(Ogre::KC_LEFT))
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162 | mCamera->yaw(mRotScale);
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163 |
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164 | force_maxLODfactor=mInputDevice->isKeyDown(Ogre::KC_F2);
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165 |
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166 | if(mInputDevice->isKeyDown(Ogre::KC_RIGHT))
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167 | mCamera->yaw(-mRotScale);
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168 |
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169 | static bool newpush = true;
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170 | if (!mInputDevice->isKeyDown(Ogre::KC_F1))
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171 | newpush = true;
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172 |
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173 | static bool showing_help = false;
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174 | if (mInputDevice->isKeyDown(Ogre::KC_F1) && newpush)
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175 | {
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176 | newpush = false;
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177 | if (showing_help = !showing_help)
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178 | mHelp->setCaption(HelpString);
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179 | else
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180 | mHelp->setCaption(NoHelpString);
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181 | }
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182 |
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183 |
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184 | if(mInputDevice->isKeyDown(Ogre::KC_ESCAPE))
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185 | return false;
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186 |
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187 | if( mInputDevice->getMouseButton( 1 ) )
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188 | {
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189 | mTranslateVector.x += mInputDevice->getMouseRelativeX() * 0.13;
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190 | mTranslateVector.y -= mInputDevice->getMouseRelativeY() * 0.13;
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191 | }
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192 | else
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193 | {
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194 | mRotX = Degree(-mInputDevice->getMouseRelativeX() * 0.13);
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195 | mRotY = Degree(-mInputDevice->getMouseRelativeY() * 0.13);
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196 | }
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197 |
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198 | mCamera->yaw(mRotX);
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199 | mCamera->pitch(mRotY);
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200 | mCamera->moveRelative(mTranslateVector);
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201 |
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202 | // make the camera walk onto the ground
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203 | Ogre::Ray ray(mCamera->getPosition()+Ogre::Vector3(0.0f,200.0f,0.0f), Ogre::Vector3::NEGATIVE_UNIT_Y);
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204 | raySceneQuery->setRay(ray);
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205 | RaySceneQueryResult &rayRes = raySceneQuery->execute();
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206 | RaySceneQueryResult::iterator itr = rayRes.begin();
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207 | if (itr != rayRes.end() && itr->worldFragment)
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208 | mCamera->setPosition(itr->worldFragment->singleIntersection+Ogre::Vector3(0.0f,15.0f,0.0f));
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209 |
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210 |
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211 | char cadena[256];
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212 | const RenderTarget::FrameStats& stats = mWindow->getStatistics();
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213 | sprintf(cadena,"Current FPS: %f\n",stats.lastFPS);
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214 | mInfo2->setCaption(cadena);
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215 |
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216 | return true;
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217 | }
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218 |
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219 | void CalculateShadowMap(void)
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220 | {
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221 | }
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222 | };
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223 |
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224 | class CustomIndexData : public Geometry::IndexData
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225 | {
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226 | private:
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227 | Ogre::Mesh *targetMesh;
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228 | Ogre::HardwareIndexBufferSharedPtr ibuf;
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229 | Ogre::RenderOperation mRenderOp;
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230 | unsigned long* pIdx;
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231 | public:
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232 | CustomIndexData(Ogre::Mesh *ogremesh):Geometry::IndexData(){
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233 | targetMesh=ogremesh;
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234 | pIdx=NULL;
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235 | }
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236 | virtual ~CustomIndexData(void){}
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237 |
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238 | virtual void Begin(unsigned int submeshid, unsigned int indexcount){
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239 | targetMesh->getSubMesh(submeshid)->_getRenderOperation(mRenderOp,0);
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240 | ibuf = mRenderOp.indexData->indexBuffer;
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241 | mRenderOp.indexData->indexCount = indexcount;
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242 | pIdx = static_cast<unsigned long*>(ibuf->lock(Ogre::HardwareBuffer::HBL_NORMAL));
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243 | }
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244 | virtual void SetIndex(unsigned int i, unsigned int index){
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245 | pIdx[i] = index;
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246 | }
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247 | virtual void End(){
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248 | ibuf->unlock();
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249 | }
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250 |
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251 | virtual void BorrowIndexData(const Geometry::IndexData *){}
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252 | };
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253 |
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254 |
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255 | class LodTreeApplication : public ExampleApplication
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256 | {
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257 | protected:
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258 | public:
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259 | LodTreeApplication(){
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260 | raySceneQuery=NULL;
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261 | centers=new Vector3[num_tree_types]; // one center per object
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262 | }
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263 | ~LodTreeApplication(){}
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264 |
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265 | Ogre::RaySceneQuery * raySceneQuery;
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266 | Geometry::LodTreeLibrary **lod_tree_types;
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267 |
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268 | protected:
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269 |
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270 | void chooseSceneManager(void)
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271 | {
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272 | // Get the SceneManager, in this case a generic one
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273 | // mSceneMgr = mRoot->getSceneManager(Ogre::ST_EXTERIOR_CLOSE);
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274 | mSceneMgr = mRoot->createSceneManager("TerrainSceneManager");
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275 | }
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276 |
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277 |
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278 | // Just override the mandatory create scene method
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279 | void createScene(void)
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280 | {
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281 | theCam = mCamera;
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282 | theCam->setPosition(500,100,dist_min+600);
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283 | // Set ambient light
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284 | mSceneMgr->setAmbientLight(ColourValue(0.4, 0.4, 0.4));
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285 | theCam->setNearClipDistance(0.1f);
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286 |
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287 | mSceneMgr->setFog( FOG_EXP, Ogre::ColourValue(0.4f,0.5f,0.6f), 0.001 );
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288 |
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289 | // Create a directional light
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290 | Light* l = mSceneMgr->createLight("MainLight");
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291 | l->setType(Light::LT_DIRECTIONAL);
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292 | l->setDirection(0.1,-1.0,-0.2);
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293 |
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294 | // terrain
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295 | mSceneMgr->setWorldGeometry( "terrain.cfg" );
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296 |
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297 |
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298 | mSceneMgr->setSkyBox(true, "Examples/CloudyNoonSkyBox");
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299 |
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300 | // My node to which all objects will be attached
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301 | SceneNode* myRootNode = mSceneMgr->getRootSceneNode()->createChildSceneNode();
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302 |
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303 | // initialize the rayscene queryer
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304 | raySceneQuery = mSceneMgr->createRayQuery(Ray());
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305 |
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306 | // the blacksmith
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307 | Vector3 BS_center=Ogre::Vector3(780.0f,200.0f,650.0f);
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308 | Ogre::Ray ray(BS_center, Ogre::Vector3::NEGATIVE_UNIT_Y);
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309 | raySceneQuery->setRay(ray);
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310 | RaySceneQueryResult &rayRes = raySceneQuery->execute();
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311 | RaySceneQueryResult::iterator itr = rayRes.begin();
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312 | if (itr != rayRes.end() && itr->worldFragment)
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313 | BS_center=itr->worldFragment->singleIntersection-Ogre::Vector3(0.0f,1.0f,0.0f);
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314 |
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315 | Ogre::Entity *entBS = mSceneMgr->createEntity("blacksmith","../../../OgreStuff/media/models/blacksmith.mesh");
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316 | Ogre::SceneNode * nodeBS = mSceneMgr->getRootSceneNode()->createChildSceneNode();
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317 | nodeBS->attachObject(entBS);
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318 | nodeBS->translate(BS_center);
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319 | nodeBS->scale(0.1f,0.1f,0.1f);
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320 |
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321 | lod_tree_types = new Geometry::LodTreeLibrary*[num_tree_types];
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322 |
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323 | // trees
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324 | lod_tree_types[0] = CreateLODTrees("../../../OgreStuff/media/GT/ML06a_01.mesh",5,780,630,200,200,centers[0], 4.0f);
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325 | lod_tree_types[1] = CreateLODTrees("../../../OgreStuff/media/GT/ML13a_02.mesh",4,150,150,200,200,centers[1], 2.0f);
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326 | lod_tree_types[2] = CreateLODTrees("../../../OgreStuff/media/GT/ML15a_03.mesh",10,300,400,200,200,centers[2], 6.0f);
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327 | lod_tree_types[3] = CreateLODTrees("../../../OgreStuff/media/GT/ML06a_01.mesh",5,330,900,500,500,centers[3], 3.0f);
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328 | lod_tree_types[4] = CreateLODTrees("../../../OgreStuff/media/GT/ML13a_02.mesh",5,1100,900,300,300,centers[4], 2.0f);
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329 | lod_tree_types[5] = CreateLODTrees("../../../OgreStuff/media/GT/ML15a_03.mesh",10,1100,300,200,200,centers[5], 6.0f);
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330 | lod_tree_types[6] = CreateLODTrees("../../../OgreStuff/media/GT/ML06a_01.mesh",7,900,500,300,300,centers[6], 2.0f);
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331 | lod_tree_types[7] = CreateLODTrees("../../../OgreStuff/media/GT/ML13a_02.mesh",5,500,950,200,200,centers[7], 3.0f);
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332 | lod_tree_types[8] = CreateLODTrees("../../../OgreStuff/media/GT/ML15a_03.mesh",9,600,400,200,200,centers[8], 6.0f);
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333 | lod_tree_types[9] = CreateLODTrees("../../../OgreStuff/media/GT/ML06a_01.mesh",7,950,1100,200,200,centers[9], 2.5f);
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334 |
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335 | // show overlay
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336 | Overlay* pOver = OverlayManager::getSingleton().getByName("Demo_LodStrips/Overlay");
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337 | mInfo = OverlayManager::getSingleton().getOverlayElement("Demo_LodStrips/Info_1");
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338 | mInfo2 = OverlayManager::getSingleton().getOverlayElement("Demo_LodStrips/Info_2");
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339 | mHelp = OverlayManager::getSingleton().getOverlayElement("Demo_LodStrips/Help");
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340 | mHelp->setCaption(NoHelpString);
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341 | pOver->show();
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342 |
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343 | mInfo->setCaption("\nMaintain F2 to disable LOD");
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344 |
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345 | // create the shadow texture
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346 | TexturePtr shadow_map = Ogre::TextureManager::getSingleton().createManual("TheShadowMap",
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347 | ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME,TEX_TYPE_2D,
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348 | 256,256,0,PF_R8G8B8,TU_STATIC_WRITE_ONLY|TU_RENDERTARGET);
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349 |
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350 | /* // en vez de crear la textura aqui se puee intentar cargar de fichero una y modificarla
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351 | HardwarePixelBufferSharedPtr shadowBuffer = shadow_map->getBuffer();
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352 | RenderTarget *render_target = shadowBuffer->getRenderTarget();*/
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353 |
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354 | HardwarePixelBufferSharedPtr shadowBuffer = shadow_map->getBuffer();
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355 | RenderTarget *render_target = shadowBuffer->getRenderTarget();
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356 |
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357 |
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358 | // RenderTarget *rttTex = shadow_map->getBuffer()->getRenderTarget();
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359 | // mSceneMgr->createCamera("lightCam");
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360 |
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361 |
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362 |
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363 | }
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364 |
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365 | void destroyScene(void)
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366 | {
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367 | if (raySceneQuery)
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368 | delete raySceneQuery;
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369 | delete[] lod_tree_types;
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370 | }
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371 |
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372 | void createFrameListener(void)
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373 | {
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374 | mFrameListener= new LodTreeFrameListener(mWindow, mCamera, raySceneQuery, lod_tree_types);
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375 | mFrameListener->showDebugOverlay(false);
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376 | mRoot->addFrameListener(mFrameListener);
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377 | }
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378 |
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379 | Geometry::LodTreeLibrary *CreateLODTrees(const char *filename, int numObjs, float cx, float cz, float w, float h, Vector3 &outcenter, float scale)
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380 | {
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381 | static int iname = 0;
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382 | char newMeshName[16]="";
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383 | sprintf(newMeshName,"tree_%d",iname);
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384 |
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385 |
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386 | // load LOD info from the object
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387 | meshloader=new Geometry::GeoMeshLoader;
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388 | Geometry::Mesh *themesh = meshloader->load((char*)filename);
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389 |
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390 | if (!meshloader->GetLodStripsData())
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391 | OGRE_EXCEPT(1, "The loaded mesh does not contain LOD info for the trunk","LOD Demo");
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392 | if (!meshloader->GetTreeSimpSeq())
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393 | OGRE_EXCEPT(1, "The loaded mesh does not contain LOD info for the foliage","LOD Demo");
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394 |
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395 | Ogre::Entity *entity = mSceneMgr->createEntity(newMeshName,filename);
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396 | // if (!entity->getMesh().unique())
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397 | // {
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398 | static int iclone = 0;
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399 | char newCloneMesh[16]="";
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400 | sprintf(newCloneMesh,"clonemesh_%d",iclone);
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401 | char newCloneEntity[16]="";
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402 | sprintf(newCloneEntity,"cloneentity_%d",iclone);
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403 | iclone++;
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404 |
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405 | Ogre::MeshPtr newmesh = entity->getMesh()->clone(newCloneMesh);
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406 | entity = mSceneMgr->createEntity(newCloneEntity,newCloneMesh);
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407 | // }
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408 | Ogre::Mesh *ogreMesh = entity->getMesh().getPointer();
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409 | entity->setNormaliseNormals(true);
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410 |
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411 | Geometry::LodTreeLibrary *mytree = new Geometry::LodTreeLibrary(
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412 | meshloader->GetLodStripsData(),
|
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413 | meshloader->GetTreeSimpSeq(),
|
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414 | themesh,
|
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415 | new CustomIndexData(ogreMesh) );
|
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416 |
|
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417 | outcenter=Vector3::ZERO;
|
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418 |
|
---|
419 | for (int i=0; i<numObjs; i++)
|
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420 | {
|
---|
421 | char newTreeName[16]="";
|
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422 | sprintf(newTreeName,"arbol_%d_%d",iname,i);
|
---|
423 | Ogre::SceneNode * auxnode = mSceneMgr->getRootSceneNode()->createChildSceneNode();
|
---|
424 | Ogre::Entity *auxent = entity->clone(newTreeName);
|
---|
425 | auxnode->attachObject( auxent );
|
---|
426 |
|
---|
427 | float kx = (rand()%100)/100.0f;
|
---|
428 | float kz = (rand()%100)/100.0f;
|
---|
429 |
|
---|
430 | Ogre::Vector3 treepos(kx*(cx-w*0.5f) + (1.0f-kx)*(cx+w*0.5f), 200.0f,
|
---|
431 | kz*(cz-h*0.5f) + (1.0f-kz)*(cz+h*0.5f));
|
---|
432 |
|
---|
433 | Ogre::Ray ray(treepos,Ogre::Vector3::NEGATIVE_UNIT_Y);
|
---|
434 | raySceneQuery->setRay(ray);
|
---|
435 | RaySceneQueryResult &rayRes = raySceneQuery->execute();
|
---|
436 | RaySceneQueryResult::iterator itr = rayRes.begin();
|
---|
437 | if (itr != rayRes.end() && itr->worldFragment)
|
---|
438 | treepos = itr->worldFragment->singleIntersection;
|
---|
439 |
|
---|
440 | auxnode->translate(treepos);
|
---|
441 | auxnode->scale(scale,scale,scale);
|
---|
442 | auxnode->rotate(Ogre::Vector3(0,1,0),Ogre::Degree(rand()%360));
|
---|
443 | auxent->setNormaliseNormals(true);
|
---|
444 | outcenter+=treepos;
|
---|
445 | }
|
---|
446 | outcenter/=numObjs;
|
---|
447 | iname++;
|
---|
448 |
|
---|
449 | return mytree;
|
---|
450 | }
|
---|
451 |
|
---|
452 | float Rand(float minN, float maxN)
|
---|
453 | {
|
---|
454 | return (((rand()%1000)/1000.0f)*(maxN-minN))+minN;
|
---|
455 | }
|
---|
456 |
|
---|
457 | };
|
---|
458 |
|
---|
459 |
|
---|
460 |
|
---|
461 | #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
|
---|
462 | #define WIN32_LEAN_AND_MEAN
|
---|
463 | #include "windows.h"
|
---|
464 | #endif
|
---|
465 |
|
---|
466 | #ifdef __cplusplus
|
---|
467 | extern "C" {
|
---|
468 | #endif
|
---|
469 |
|
---|
470 | #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
|
---|
471 | INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR strCmdLine, INT )
|
---|
472 | #else
|
---|
473 | int main(int argc, char **argv)
|
---|
474 | #endif
|
---|
475 | {
|
---|
476 | // Create application object
|
---|
477 | LodTreeApplication app;
|
---|
478 |
|
---|
479 | try {
|
---|
480 | app.go();
|
---|
481 | } catch( Exception& e ) {
|
---|
482 | #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
|
---|
483 | MessageBox( NULL, e.getFullDescription().c_str(), "An exception has occured!", MB_OK | MB_ICONERROR | MB_TASKMODAL);
|
---|
484 | #else
|
---|
485 | std::cerr << "An exception has occured: " << e.getFullDescription();
|
---|
486 | #endif
|
---|
487 | }
|
---|
488 |
|
---|
489 |
|
---|
490 | return 0;
|
---|
491 | }
|
---|
492 |
|
---|
493 | #ifdef __cplusplus
|
---|
494 | }
|
---|
495 | #endif
|
---|