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 "GeoLodStripsLibrary.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 1100
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21 | #define dist_max 2500
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22 |
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23 | // Model name
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24 | #define model_name "dwarf2"
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25 |
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26 |
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27 | //Global variables
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28 |
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29 | Entity* entity;
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30 | Geometry::LodStripsLibrary* myStrips;
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31 | Ogre::Mesh *ogreMesh=NULL;
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32 | Geometry::GeoMeshLoader *meshloader=NULL;
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33 | SceneNode* node;
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34 |
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35 | MaterialPtr *mat;
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36 |
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37 | ColourValue color=ColourValue::Red;
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38 |
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39 | Camera* theCam;
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40 | Entity* pPlaneEnt;
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41 |
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42 | OverlayElement* mInfo;
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43 | OverlayElement* mInfo2;
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44 | OverlayElement* mHelp;
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45 | OverlayElement* mLOD;
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46 | OverlayElement* mShad;
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47 | SceneManager* SceneMgrAux;
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48 |
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49 | char LODStringAuto[]="(F3) LOD Mode: AUTOMATIC";
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50 | char LODStringManu[]="(F3) LOD Mode: MANUAL";
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51 | char ShadON[] ="(F2) Shadows ON";
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52 | char ShadOFF[] ="(F2) Shadows OFF";
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53 |
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54 | int degAA=0, degABAB=0;
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55 |
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56 | char HelpString[]="(F1) Quit Help\n"
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57 | "This demo shows an example of the LODStrips model in action. The models in the scene\n"
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58 | "are associated to a LodStrips object that manage their level of detail.\n"
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59 | "The level of detail of the objects depend on the distance to the camera. When the\n"
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60 | "camera goes away from them, the level of detail decreases, and when the camera gets\n"
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61 | "closer to them the level of detail increases to restore the original geometry of the\n"
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62 | "model.\n"
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63 | "The current level of detail can be seen in real-time in the bottom-left corner of the screen.\n"
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64 | "The level of detail begins to decrease at a certain distance of the crowd, and stops\n"
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65 | "decreasing when the objects reach the their minimum LOD. This 'lodding' distance is\n"
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66 | "customizable from the source code of the demo.\n\n"
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67 | "(F3) LOD Mode ( AUTOMATIC vs MANUAL )\n"
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68 | " MANUAL MODE: Use (+) and (-) keys to change de LOD\n";
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69 |
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70 | char NoHelpString[]="\n\n\n\n\n\n\n\n\n\n\n\n\n(F1) Help\n";
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71 |
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72 | int num_ogres = 90;
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73 |
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74 |
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75 | class CustomIndexData : public Geometry::IndexData
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76 | {
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77 | private:
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78 | Ogre::Mesh *targetMesh;
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79 | Ogre::HardwareIndexBufferSharedPtr ibuf;
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80 | Ogre::RenderOperation mRenderOp;
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81 | unsigned long* pIdx;
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82 | public:
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83 | CustomIndexData(Ogre::Mesh *ogremesh):Geometry::IndexData(){
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84 | targetMesh=ogremesh;
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85 | pIdx=NULL;
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86 | }
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87 | virtual ~CustomIndexData(void){}
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88 |
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89 | virtual void Begin(unsigned int submeshid, unsigned int indexcount){
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90 | targetMesh->getSubMesh(submeshid)->_getRenderOperation(mRenderOp,0);
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91 | ibuf = mRenderOp.indexData->indexBuffer;
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92 | mRenderOp.indexData->indexCount = indexcount;
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93 | pIdx = static_cast<unsigned long*>(ibuf->lock(Ogre::HardwareBuffer::HBL_NORMAL));
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94 | }
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95 | virtual void SetIndex(unsigned int i, unsigned int index){
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96 | pIdx[i] = index; //lodStripsLib->dataRetrievalInterface->GetIndex(k+offset);
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97 | }
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98 | virtual void End(){
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99 | int v0, v1, v2, v3;
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100 | unsigned int i;
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101 |
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102 | v0 = pIdx[0];
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103 | v1 = pIdx[1];
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104 | for ( i=2; i < mRenderOp.indexData->indexCount; i++)
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105 | {
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106 | if ( v0 == v1 ) degAA++;
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107 | v0 = v1;
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108 | v1 = pIdx[i];
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109 | }
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110 |
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111 | v0 = pIdx[0];
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112 | v1 = pIdx[1];
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113 | v2 = pIdx[2];
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114 | v3 = pIdx[3];
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115 | for ( i=4; i < mRenderOp.indexData->indexCount; i++)
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116 | {
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117 | if ( ( v0 == v2 ) && ( v1 == v3 ) )
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118 | {
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119 | v0 = v2;
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120 | v1 = v3;
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121 | v2 = pIdx[i];
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122 | if ( i < mRenderOp.indexData->indexCount )
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123 | {
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124 | i++;
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125 | v3 = pIdx[i];
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126 | }
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127 | else v3 = -1;
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128 |
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129 | degABAB++;
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130 | }
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131 | else
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132 | {
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133 | v0 = v1;
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134 | v1 = v2;
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135 | v2 = v3;
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136 | v3 = pIdx[i];
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137 | }
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138 | }
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139 |
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140 | ibuf->unlock();
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141 | }
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142 | virtual void BorrowIndexData(const Geometry::IndexData *){}
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143 | };
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144 |
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145 | class FresnelFrameListener : public ExampleFrameListener
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146 | {
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147 | float miButtonTimer;
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148 |
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149 | public:
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150 |
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151 | FresnelFrameListener(RenderWindow* win, Camera* cam)
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152 | : ExampleFrameListener(win, cam, false, false)
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153 | {
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154 | miButtonTimer=0;
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155 | }
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156 |
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157 | bool frameStarted(const FrameEvent& evt)
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158 | {
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159 | Vector3 dist;
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160 | int distance=0,inc2=0;
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161 | static int modo=0;
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162 | static int shadows=1;
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163 |
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164 | float tiempo = evt.timeSinceLastFrame;
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165 | miButtonTimer -= tiempo;
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166 |
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167 | if (shadows == 0)
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168 | {
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169 | SceneMgrAux->setShadowTechnique(SHADOWTYPE_NONE);
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170 | }
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171 | else
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172 | {
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173 | SceneMgrAux->setShadowTechnique(SHADOWTYPE_TEXTURE_MODULATIVE);
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174 | }
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175 |
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176 |
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177 | // Move upto 80 units/second
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178 | Real MoveFactor = 180.0 * evt.timeSinceLastFrame;
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179 |
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180 | // Copy the current state of the input devices
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181 | mInputDevice->capture();
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182 |
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183 | // If this is the first frame, pick a speed
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184 | if (evt.timeSinceLastFrame == 0)
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185 | {
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186 | mMoveScale = 1;
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187 | mRotScale = 0.1;
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188 | }
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189 | // Otherwise scale movement units by time passed since last frame
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190 | else
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191 | {
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192 | // Move about 100 units per second,
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193 | mMoveScale = mMoveSpeed * evt.timeSinceLastFrame;
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194 | // Take about 10 seconds for full rotation
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195 | mRotScale = mRotateSpeed * evt.timeSinceLastFrame;
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196 | }
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197 |
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198 | mRotX = 0;
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199 | mRotY = 0;
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200 | mTranslateVector = Vector3::ZERO;
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201 |
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202 | //LOD selection
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203 | static float lodfactor=0;
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204 | static float lodfactorBefore = -1.0f;
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205 |
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206 | dist = node->getPosition() - mCamera->getPosition();
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207 | distance =dist.length();
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208 |
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209 | if ( modo == 0 ) //Automatic LOD
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210 | {
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211 | int difdist = dist_max - dist_min;
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212 |
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213 | int i=0;
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214 |
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215 | lodfactor = (float)(distance - dist_min) / (float)(dist_max - dist_min);
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216 | lodfactor = 1.0f - lodfactor;
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217 | }
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218 | else
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219 | {
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220 | // lodfactor = lodfactorBefore;
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221 | }
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222 |
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223 |
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224 | if (( mInputDevice->isKeyDown(Ogre::KC_ADD) ) && (modo == 1))
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225 | lodfactor += 0.001f;
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226 | if (( mInputDevice->isKeyDown(Ogre::KC_SUBTRACT) ) && (modo == 1))
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227 | lodfactor -= 0.001f;
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228 |
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229 | if (lodfactor<0.0f)
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230 | lodfactor=0.0f;
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231 | if (lodfactor>1.0f)
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232 | lodfactor=1.0f;
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233 |
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234 | if (fabsf(lodfactorBefore-lodfactor)>0.03f ||
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235 | (lodfactorBefore>0.0f && lodfactor==0.0f) ||
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236 | (lodfactorBefore<1.0f && lodfactor==1.0f))
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237 | {
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238 | degAA=0; degABAB=0;
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239 | myStrips->GoToLod(lodfactor);
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240 | lodfactorBefore=lodfactor;
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241 | }
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242 |
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243 | if ( mInputDevice->isKeyDown(Ogre::KC_F3) && ( miButtonTimer <= 0 ) )
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244 | {
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245 | miButtonTimer = 0.5;
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246 |
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247 | if (modo == 0)
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248 | {
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249 | modo=1;
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250 | mLOD->setCaption(LODStringManu);
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251 | }
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252 | else
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253 | {
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254 | modo=0;
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255 | mLOD->setCaption(LODStringAuto);
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256 | }
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257 | }
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258 |
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259 | if ( mInputDevice->isKeyDown(Ogre::KC_F2) && ( miButtonTimer <= 0 ) )
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260 | {
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261 | miButtonTimer = 0.5;
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262 |
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263 | if (shadows == 0)
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264 | {
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265 | shadows = 1;
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266 | mShad->setCaption(ShadON);
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267 | }
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268 | else
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269 | {
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270 | shadows = 0;
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271 | mShad->setCaption(ShadOFF);
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272 | }
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273 | }
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274 |
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275 | // Move the node
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276 | if(mInputDevice->isKeyDown(Ogre::KC_UP) ||
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277 | mInputDevice->isKeyDown(Ogre::KC_W) ||
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278 | mInputDevice->isKeyDown(Ogre::KC_NUMPAD5))
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279 | mTranslateVector.z = -mMoveScale;
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280 |
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281 | if(mInputDevice->isKeyDown(Ogre::KC_DOWN) ||
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282 | mInputDevice->isKeyDown(Ogre::KC_S) ||
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283 | mInputDevice->isKeyDown(Ogre::KC_NUMPAD2))
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284 | mTranslateVector.z = mMoveScale;
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285 |
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286 | if (mInputDevice->isKeyDown(Ogre::KC_A) ||
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287 | mInputDevice->isKeyDown(Ogre::KC_NUMPAD1))
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288 | mTranslateVector.x = -mMoveScale;
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289 |
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290 | if (mInputDevice->isKeyDown(Ogre::KC_D) ||
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291 | mInputDevice->isKeyDown(Ogre::KC_NUMPAD3))
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292 | mTranslateVector.x = mMoveScale;
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293 |
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294 | /* if (mInputDevice->isKeyDown(Ogre::KC_K))
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295 | mCamera->setDetailLevel(SDL_WIREFRAME);*/
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296 |
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297 | static bool newpush = true;
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298 | if (!mInputDevice->isKeyDown(Ogre::KC_F1))
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299 | newpush = true;
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300 |
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301 | static bool showing_help = false;
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302 | if (mInputDevice->isKeyDown(Ogre::KC_F1) && newpush)
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303 | {
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304 | newpush = false;
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305 | if (showing_help = !showing_help)
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306 | mHelp->setCaption(HelpString);
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307 | else
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308 | mHelp->setCaption(NoHelpString);
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309 | }
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310 |
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311 | if(mInputDevice->isKeyDown(Ogre::KC_LEFT))
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312 | mCamera->yaw(mRotScale);
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313 |
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314 | if(mInputDevice->isKeyDown(Ogre::KC_RIGHT))
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315 | mCamera->yaw(-mRotScale);
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316 |
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317 | if(mInputDevice->isKeyDown(Ogre::KC_ESCAPE))
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318 | {
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319 | delete myStrips;
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320 | delete [] mat;
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321 | return false;
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322 | }
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323 |
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324 | if( mInputDevice->getMouseButton( 1 ) )
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325 | {
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326 | mTranslateVector.x += mInputDevice->getMouseRelativeX() * 0.13;
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327 | mTranslateVector.y -= mInputDevice->getMouseRelativeY() * 0.13;
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328 | }
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329 | else
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330 | {
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331 | mRotX = Degree(-mInputDevice->getMouseRelativeX() * 0.13);
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332 | mRotY = Degree(-mInputDevice->getMouseRelativeY() * 0.13);
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333 | }
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334 |
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335 | SceneMgrAux->setShadowFarDistance(distance + 200);
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336 |
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337 | char cadena[256];
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338 | const RenderTarget::FrameStats& stats = mWindow->getStatistics();
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339 |
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340 | sprintf(cadena,"\nDistance: %d\nLOD factor: %f\nTriangle Count: %d\nDegenerated AA: %d\nDegenerated ABAB: %d"
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341 | , distance, lodfactor,stats.triangleCount, degAA*num_ogres, degABAB*num_ogres);
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342 | mInfo->setCaption(cadena);
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343 | sprintf(cadena,"Current FPS: %f\n",stats.lastFPS);
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344 | mInfo2->setCaption(cadena);
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345 |
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346 | //sprintf(cadena,"LOD factor: %f",lodfactor);
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347 |
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348 | //mInfo2->setCaption(cadena);
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349 |
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350 | mCamera->yaw(mRotX);
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351 | mCamera->pitch(mRotY);
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352 | mCamera->moveRelative(mTranslateVector);
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353 |
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354 | return true;
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355 | }
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356 |
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357 | };
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358 |
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359 | class LodStripsApplication : public ExampleApplication
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360 | {
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361 | protected:
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362 | public:
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363 | LodStripsApplication() {}
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364 | ~LodStripsApplication() {}
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365 |
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366 | protected:
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367 |
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368 | // Just override the mandatory create scene method
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369 | void createScene(void)
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370 | {
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371 | SceneMgrAux = mSceneMgr;
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372 | mSceneMgr->setAmbientLight(ColourValue(0.2, 0.2, 0.2));
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373 | mSceneMgr->setShadowTechnique(SHADOWTYPE_TEXTURE_MODULATIVE);
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374 | mSceneMgr->setShadowTextureSettings(2048,1);
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375 | mSceneMgr->setShadowFarDistance(1024);
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376 | mSceneMgr->setShadowColour(ColourValue(0.5, 0.5, 0.5));
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377 |
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378 | mat = new MaterialPtr[1];
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379 |
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380 | theCam = mCamera;
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381 | theCam->setPosition(-35,50,dist_min-600.0f);
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382 | // Set ambient light
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383 |
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384 | // Create a directional light
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385 | Light* l = mSceneMgr->createLight("MainLight");
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386 | l->setType(Light::LT_DIRECTIONAL);
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387 | l->setDirection(-0.5,-1.0,-1.0);
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388 | l->setCastShadows(true);
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389 |
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390 | mSceneMgr->setSkyBox(true, "Examples/CloudyNoonSkyBox");
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391 |
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392 | // My node to which all objects will be attached
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393 | SceneNode* myRootNode = mSceneMgr->getRootSceneNode()->createChildSceneNode();
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394 |
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395 | // Define a floor plane mesh
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396 | Plane plane( Vector3::UNIT_Y, 0 );
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397 |
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398 | MeshManager::getSingleton().createPlane("ground",
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399 | ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, plane,
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400 | 20000,10000,6,6,true,1,250,250,Vector3::UNIT_Z);
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401 |
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402 | Entity* groundEntity = mSceneMgr->createEntity( "GroundEntity", "ground" );
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403 | mSceneMgr->getRootSceneNode()->createChildSceneNode()->attachObject(groundEntity);
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404 |
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405 | groundEntity->setMaterialName("SnowTerrain");
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406 | groundEntity->setCastShadows(false);
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407 |
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408 | std::string model_file=model_name;
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409 | model_file.append(".mesh");
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410 |
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411 | //Models
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412 | entity = mSceneMgr->createEntity(model_name, "../../../OgreStuff/media/GT/ogrolod.mesh");
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413 | ogreMesh = entity->getMesh().getPointer();
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414 |
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415 | // load LOD info from the object
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416 | meshloader=new Geometry::GeoMeshLoader;
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417 | Geometry::Mesh *themesh = meshloader->load("../../../OgreStuff/media/GT/ogrolod.mesh");
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418 |
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419 | node = mSceneMgr->getRootSceneNode()->createChildSceneNode();
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420 | node->attachObject( entity );
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421 | node->setVisible(false);
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422 |
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423 | std::string lod_file="../../media/GT/";
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424 | lod_file.append(model_name);
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425 | lod_file.append(".lod");
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426 |
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427 | if (!meshloader->GetLodStripsData())
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428 | OGRE_EXCEPT(1, "The loaded mesh does not contain any LOD info","LOD Demo");
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429 |
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430 | myStrips = new Geometry::LodStripsLibrary( meshloader->GetLodStripsData(),
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431 | themesh,
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432 | new CustomIndexData(ogreMesh) );
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433 |
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434 | entity->setNormaliseNormals(true);
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435 | entity->setMaterialName("LODStripsDemo/Ogro");
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436 |
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437 |
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438 | num_ogres=0;
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439 |
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440 | for (int i=-4; i<4; i++) // 7
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441 | for (int j=0; j<8; j++) // 4
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442 | {
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443 | char newObjName[16]="";
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444 | sprintf(newObjName,"arbol_%d_%d",i,j);
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445 | Ogre::SceneNode * auxnode = mSceneMgr->getRootSceneNode()->createChildSceneNode();
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446 | Ogre::Entity *auxen = entity->clone(newObjName);
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447 | auxnode->attachObject(auxen);
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448 | auxnode->rotate(Ogre::Vector3(0,1,0),Ogre::Degree(180.0f),Ogre::Node::TS_WORLD);
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449 | auxnode->scale(30.0f,30.0f,30.0f);
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450 | float randomsepx = (float)((rand()%18)-9);
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451 | float randomsepy = (float)((rand()%12)-6);
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452 | auxnode->translate(i*70.0f+randomsepx,-0.3f,-j*70.0f-randomsepx);
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453 | auxen->setNormaliseNormals(true);
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454 | auxen->setCastShadows(true);
|
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455 |
|
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456 | num_ogres++;
|
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457 | }
|
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458 |
|
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459 | node->translate(0,0,-500.0f);
|
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460 |
|
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461 | // show overlay
|
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462 | Overlay* pOver = OverlayManager::getSingleton().getByName("Demo_LodStrips/Overlay");
|
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463 | mInfo = OverlayManager::getSingleton().getOverlayElement("Demo_LodStrips/Info_1");
|
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464 | mInfo2 = OverlayManager::getSingleton().getOverlayElement("Demo_LodStrips/Info_2");
|
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465 | mHelp = OverlayManager::getSingleton().getOverlayElement("Demo_LodStrips/Help");
|
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466 | mLOD = OverlayManager::getSingleton().getOverlayElement("Demo_LodStrips/ModoLOD");
|
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467 | mShad = OverlayManager::getSingleton().getOverlayElement("Demo_LodStrips/Shadows");
|
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468 | mHelp->setCaption(NoHelpString);
|
---|
469 | mLOD->setCaption(LODStringAuto);
|
---|
470 | mShad->setCaption(ShadON);
|
---|
471 | pOver->show();
|
---|
472 | //mWindow->getStatistics();
|
---|
473 |
|
---|
474 | }
|
---|
475 |
|
---|
476 | void createFrameListener(void)
|
---|
477 | {
|
---|
478 | mFrameListener= new FresnelFrameListener(mWindow, mCamera);
|
---|
479 | mFrameListener->showDebugOverlay(false);
|
---|
480 | mRoot->addFrameListener(mFrameListener);
|
---|
481 | }
|
---|
482 |
|
---|
483 | };
|
---|
484 |
|
---|
485 |
|
---|
486 |
|
---|
487 | #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
|
---|
488 | #define WIN32_LEAN_AND_MEAN
|
---|
489 | #include "windows.h"
|
---|
490 | #endif
|
---|
491 |
|
---|
492 | #ifdef __cplusplus
|
---|
493 | extern "C" {
|
---|
494 | #endif
|
---|
495 |
|
---|
496 | #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
|
---|
497 | INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR strCmdLine, INT )
|
---|
498 | #else
|
---|
499 | int main(int argc, char **argv)
|
---|
500 | #endif
|
---|
501 | {
|
---|
502 | // Create application object
|
---|
503 | LodStripsApplication app;
|
---|
504 |
|
---|
505 | try {
|
---|
506 | app.go();
|
---|
507 | } catch( Exception& e ) {
|
---|
508 | #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
|
---|
509 | MessageBox( NULL, e.getFullDescription().c_str(), "An exception has occured!", MB_OK | MB_ICONERROR | MB_TASKMODAL);
|
---|
510 | #else
|
---|
511 | std::cerr << "An exception has occured: " << e.getFullDescription();
|
---|
512 | #endif
|
---|
513 | }
|
---|
514 |
|
---|
515 |
|
---|
516 | return 0;
|
---|
517 | }
|
---|
518 |
|
---|
519 | #ifdef __cplusplus
|
---|
520 | }
|
---|
521 | #endif
|
---|