[1092] | 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 | SceneNode* node;
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| 33 |
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| 34 | MaterialPtr *mat;
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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 |
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| 49 | Ogre::HardwareIndexBufferSharedPtr ibuf;
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| 50 | Ogre::IndexData *indexes;
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| 51 | Ogre::RenderOperation mRenderOp;
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| 52 |
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| 53 | for (int submesh=0; submesh < original_mesh->getNumSubMeshes(); submesh++)
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| 54 | {
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| 55 | bool istrunk = lodTreesLib->GetLeavesSubMesh()!=submesh;
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| 56 | original_mesh->getSubMesh(submesh)->_getRenderOperation(mRenderOp,0);
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| 57 |
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| 58 | // we will suppose this submesh is the foliage
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| 59 | int indices_to_render = lodTreesLib->CurrentLOD_Foliage_IndexCount();
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| 60 | int offset = 0;
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| 61 |
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| 62 | if (istrunk)
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| 63 | {
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| 64 | // this submesh is the trunk
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| 65 | offset = lodTreesLib->GetValidTrunkOffset(submesh);
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| 66 | indices_to_render = lodTreesLib->GetValidTrunkIndexCount(submesh);
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| 67 | }
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| 68 |
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| 69 | ibuf = Ogre::HardwareBufferManager::getSingleton().createIndexBuffer(
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| 70 | Ogre::HardwareIndexBuffer::IT_32BIT, // type of index
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| 71 | indices_to_render, // number of indexes
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| 72 | Ogre::HardwareBuffer::HBU_DISCARDABLE , // usage
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| 73 | false); // no shadow buffer
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| 74 |
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| 75 | mRenderOp.indexData->indexBuffer = ibuf;
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| 76 | mRenderOp.indexData->indexStart = 0;
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| 77 | mRenderOp.indexData->indexCount = indices_to_render;
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| 78 |
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| 79 | unsigned long* pIdx = static_cast<unsigned long*>(ibuf->lock(Ogre::HardwareBuffer::HBL_NORMAL));
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| 80 |
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| 81 | for (int k=0; k<indices_to_render; k++)
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| 82 | if (istrunk)
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| 83 | pIdx[k] = lodTreesLib->CurrentLOD_Trunk_Indices()->GetIndex(k+offset);
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| 84 | else
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| 85 | pIdx[k] = lodTreesLib->CurrentLOD_Foliage_Indices()->GetIndex(k);
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| 86 |
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| 87 |
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| 88 | ibuf->unlock();
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| 89 | }
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| 90 | }
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| 91 |
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| 92 | class FresnelFrameListener : public ExampleFrameListener
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| 93 | {
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| 94 | int manage;
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| 95 |
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| 96 | public:
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| 97 |
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| 98 | FresnelFrameListener(RenderWindow* win, Camera* cam)
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| 99 | : ExampleFrameListener(win, cam, false, false)
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| 100 | {
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| 101 | manage=1;
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| 102 | }
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| 103 |
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| 104 | bool frameStarted(const FrameEvent& evt)
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| 105 | {
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| 106 | Vector3 dist;
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| 107 | int distance=0,inc2=0,d;
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| 108 | unsigned int nlod,diflods;
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| 109 |
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| 110 | // Move upto 80 units/second
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| 111 | Real MoveFactor = 180.0 * evt.timeSinceLastFrame;
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| 112 |
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| 113 | // Copy the current state of the input devices
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| 114 | mInputDevice->capture();
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| 115 |
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| 116 | // If this is the first frame, pick a speed
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| 117 | if (evt.timeSinceLastFrame == 0)
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| 118 | {
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| 119 | mMoveScale = 1;
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| 120 | mRotScale = 0.1;
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| 121 | }
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| 122 | // Otherwise scale movement units by time passed since last frame
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| 123 | else
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| 124 | {
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| 125 | // Move about 100 units per second,
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| 126 | mMoveScale = mMoveSpeed * evt.timeSinceLastFrame;
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| 127 | // Take about 10 seconds for full rotation
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| 128 | mRotScale = mRotateSpeed * evt.timeSinceLastFrame;
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| 129 | }
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| 130 |
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| 131 | mRotX = 0;
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| 132 | mRotY = 0;
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| 133 | mTranslateVector = Vector3::ZERO;
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| 134 |
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| 135 | //LOD selection
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| 136 | int difdist = dist_max - dist_min;
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| 137 |
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| 138 | int i=0;
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| 139 |
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| 140 | dist = node->getPosition() - mCamera->getPosition();
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| 141 | distance =dist.length();
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| 142 |
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| 143 | DumpDataToOgreBuffers(ogreMesh,myTrees);
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| 144 |
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| 145 | float lodfactor = (float)(distance - dist_min) / (float)(dist_max - dist_min);
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| 146 | lodfactor = 1.0f - lodfactor;
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| 147 |
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| 148 | if (lodfactor >= 0.0f && lodfactor <= 1.0f)
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| 149 | {
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| 150 | myTrees->GoToLod(lodfactor);
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| 151 |
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| 152 | if (lodfactor < 0.333f)
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| 153 | {
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| 154 | color.r=0.0;
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| 155 | color.g=(lodfactor)*3.0f;//nlod*1.0/(diflods/3);
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| 156 | color.b=(1.0-lodfactor)*3.0f;//(nlod*1.0/(diflods/3));
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| 157 | }
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| 158 | else
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| 159 | {
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| 160 | if (lodfactor<0.666f)
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| 161 | {
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| 162 | color.r=(lodfactor-0.333f)*3.0f;//(nlod-diflods/3)*1.0/(diflods/3);
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| 163 | color.g=1.0;
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| 164 | color.b=0.0;
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| 165 | }
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| 166 | else
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| 167 | {
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| 168 | color.r=1.0;
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| 169 | color.g=(1.0-lodfactor)*3.0f;//(nlod-(2*diflods/3))*1.0/(diflods/3);
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| 170 | color.b=0.0;
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| 171 | }
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| 172 | }
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| 173 | mat[0]->setDiffuse(color);
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| 174 | }
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| 175 | /* else
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| 176 | {
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| 177 | if ((distance > dist_max))
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| 178 | {
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| 179 | // myStrips->GoToLod(1.0f);
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| 180 |
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| 181 | color.r=0.0;
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| 182 | color.g=0.0;
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| 183 | color.b=1.0;
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| 184 | mat[0]->setDiffuse(color);
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| 185 |
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| 186 | }
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| 187 | else
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| 188 | {
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| 189 | if ((distance < dist_min))
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| 190 | {
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| 191 | // myStrips->GoToLod(0.0f);
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| 192 |
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| 193 | color.r=1.0;
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| 194 | color.g=0.0;
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| 195 | color.b=0.0;
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| 196 | mat[0]->setDiffuse(color);
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| 197 | }
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| 198 | }
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| 199 | }*/
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| 200 |
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| 201 | // Move the node
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| 202 | if(mInputDevice->isKeyDown(Ogre::KC_UP))
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| 203 | mTranslateVector.z = -mMoveScale;
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| 204 |
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| 205 |
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| 206 | if(mInputDevice->isKeyDown(Ogre::KC_DOWN))
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| 207 | mTranslateVector.z = mMoveScale;
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| 208 |
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| 209 | // Instead of moving the ship left and right, rotate it using yaw()
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| 210 | if(mInputDevice->isKeyDown(Ogre::KC_LEFT))
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| 211 | mCamera->yaw(mRotScale);
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| 212 |
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| 213 | if(mInputDevice->isKeyDown(Ogre::KC_RIGHT))
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| 214 | mCamera->yaw(-mRotScale);
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| 215 |
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| 216 | // Move the node
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| 217 | if(mInputDevice->isKeyDown(Ogre::KC_W))
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| 218 | node->translate(0,mMoveScale,0);
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| 219 |
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| 220 | if(mInputDevice->isKeyDown(Ogre::KC_S))
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| 221 | node->translate(0,-mMoveScale,0);
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| 222 |
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| 223 | if(mInputDevice->isKeyDown(Ogre::KC_Z))
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| 224 | node->scale(1.01,1.01,1.01);
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| 225 |
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| 226 | if(mInputDevice->isKeyDown(Ogre::KC_X))
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| 227 | node->scale(0.99,0.99,0.99);
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| 228 |
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| 229 | // Rotate
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| 230 | if(mInputDevice->isKeyDown(Ogre::KC_A))
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| 231 | node->yaw(mRotScale);
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| 232 |
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| 233 | if(mInputDevice->isKeyDown(Ogre::KC_D))
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| 234 | node->yaw(-mRotScale);
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| 235 |
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| 236 | if(mInputDevice->isKeyDown(Ogre::KC_ESCAPE))
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| 237 | {
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| 238 | delete myTrees;
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| 239 |
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| 240 | delete [] mat;
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| 241 |
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| 242 | return false;
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| 243 | }
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| 244 |
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| 245 | if( mInputDevice->getMouseButton( 1 ) )
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| 246 | {
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| 247 | mTranslateVector.x += mInputDevice->getMouseRelativeX() * 0.13;
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| 248 | mTranslateVector.y -= mInputDevice->getMouseRelativeY() * 0.13;
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| 249 | }
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| 250 | else
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| 251 | {
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| 252 | mRotX = Degree(-mInputDevice->getMouseRelativeX() * 0.13);
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| 253 | mRotY = Degree(-mInputDevice->getMouseRelativeY() * 0.13);
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| 254 | }
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| 255 |
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| 256 |
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| 257 | char cadena[256];
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| 258 |
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| 259 |
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| 260 | sprintf(cadena,"Distance: %d",distance);
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| 261 |
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| 262 | mInfo->setCaption(cadena);
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| 263 |
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| 264 | if (lodfactor<0.0f)
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| 265 | lodfactor=0.0f;
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| 266 | if (lodfactor>1.0f)
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| 267 | lodfactor=1.0f;
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| 268 | sprintf(cadena,"LOD factor: %f",lodfactor);
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| 269 |
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| 270 | mInfo2->setCaption(cadena);
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| 271 |
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| 272 | mCamera->yaw(mRotX);
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| 273 | mCamera->pitch(mRotY);
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| 274 | mCamera->moveRelative(mTranslateVector);
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| 275 |
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| 276 | return true;
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| 277 | }
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| 278 | };
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| 279 |
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| 280 | class FresnelApplication : public ExampleApplication
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| 281 | {
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| 282 | protected:
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| 283 | public:
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| 284 | FresnelApplication()
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| 285 | {
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| 286 | }
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| 287 |
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| 288 | ~FresnelApplication()
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| 289 | {
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| 290 | }
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| 291 | protected:
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| 292 |
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| 293 |
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| 294 |
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| 295 | // Just override the mandatory create scene method
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| 296 | void createScene(void)
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| 297 | {
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| 298 | mat = new MaterialPtr[1];
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| 299 |
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| 300 | theCam = mCamera;
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| 301 | theCam->setPosition(0,20,dist_max+50);
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| 302 | // Set ambient light
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| 303 | mSceneMgr->setAmbientLight(ColourValue(0.3, 0.3, 0.3));
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| 304 |
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| 305 | // Create a point light
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| 306 | Light* l = mSceneMgr->createLight("MainLight");
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| 307 | l->setType(Light::LT_DIRECTIONAL);
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| 308 | l->setDirection(0.0,0.0,-1.0);
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| 309 |
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| 310 | // Define a floor plane mesh
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| 311 | Plane plane( Vector3::UNIT_Y, 0 );
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| 312 |
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| 313 | MeshManager::getSingleton().createPlane("ground",
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| 314 | ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME, plane,
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| 315 | 1500,1500,20,20,true,1,5,5,Vector3::UNIT_Z);
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| 316 |
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| 317 | Entity* suelo = mSceneMgr->createEntity( "GroundEntity", "ground" );
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| 318 | mSceneMgr->getRootSceneNode()->createChildSceneNode()->attachObject(suelo);
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| 319 |
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| 320 |
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| 321 | suelo->setMaterialName("Examples/GrassFloor");
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| 322 | suelo->setCastShadows(false);
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| 323 |
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| 324 |
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| 325 | mSceneMgr->setSkyBox(true, "Examples/CloudyNoonSkyBox");
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| 326 |
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| 327 | // My node to which all objects will be attached
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| 328 | SceneNode* myRootNode = mSceneMgr->getRootSceneNode()->createChildSceneNode();
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| 329 |
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| 330 | std::string model_file=model_name;
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| 331 | model_file.append(".mesh");
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| 332 |
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| 333 | //Models
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| 334 | entity = mSceneMgr->createEntity(model_name, "../../../OgreStuff/media/GT/betulalod.mesh");
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| 335 |
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| 336 | ogreMesh = entity->getMesh().getPointer();
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| 337 |
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| 338 | // load LOD info from the object
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| 339 | meshloader=new Geometry::GeoMeshLoader;
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| 340 | Geometry::Mesh *themesh = meshloader->load("../../../OgreStuff/media/GT/betulalod.mesh");
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| 341 |
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| 342 | node = mSceneMgr->getRootSceneNode()->createChildSceneNode();
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| 343 | node->attachObject( entity );
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| 344 | node->rotate(Ogre::Vector3(1,0,0),Ogre::Radian(-90.0f));
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| 345 |
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| 346 | // myStrips = new LodStripsLibrary(lod_file,entity->getMesh().getPointer());
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| 347 |
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| 348 | if (!meshloader->GetLodStripsData() || !meshloader->GetTreeSimpSeq())
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| 349 | exit(1);
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| 350 |
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| 351 | // myStrips = new Geometry::LodStripsLibrary(meshloader->GetLodStripsData(),themesh);
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| 352 | myTrees = new Geometry::LodTreeLibrary(meshloader->GetLodStripsData(),meshloader->GetTreeSimpSeq(),themesh);
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| 353 |
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| 354 | entity->setNormaliseNormals(true);
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| 355 |
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| 356 | /* // Colour-coded material
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| 357 | mat[0] = MaterialManager::getSingleton().create("test_mat",
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| 358 | ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
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| 359 | mat[0]->setCullingMode(CULL_ANTICLOCKWISE);
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| 360 | mat[0]->setAmbient(ColourValue::Black);
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| 361 | mat[0]->setDiffuse(color);
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| 362 | mat[0]->setLightingEnabled(true);
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| 363 | entity->setMaterialName("test_mat");*/
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| 364 |
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| 365 |
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| 366 | // Colour-coded material
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| 367 | mat[0] = MaterialManager::getSingleton().create("test_mat",
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| 368 | ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
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| 369 | mat[0]->setCullingMode(CULL_NONE);
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| 370 | mat[0]->setAmbient(ColourValue::Black);
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| 371 | mat[0]->setDiffuse(color);
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| 372 | mat[0]->setLightingEnabled(true);
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| 373 | mat[0]->createTechnique()->createPass()->createTextureUnitState("nm_rt.png");
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| 374 | //entity->setMaterialName("test_mat");
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| 375 | entity->setMaterialName("Examples/GrassFloor");
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| 376 |
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| 377 |
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| 378 | // show overlay
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| 379 | Overlay* pOver = OverlayManager::getSingleton().getByName("Demo_LodStrips/Overlay");
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| 380 | mInfo = OverlayManager::getSingleton().getOverlayElement("Demo_LodStrips/Info_1");
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| 381 | mInfo2 = OverlayManager::getSingleton().getOverlayElement("Demo_LodStrips/Info_2");
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| 382 | pOver->show();
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| 383 |
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| 384 | }
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| 385 |
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| 386 | void createFrameListener(void)
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| 387 | {
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| 388 | mFrameListener= new FresnelFrameListener(mWindow, mCamera);
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| 389 | mFrameListener->showDebugOverlay(true);
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| 390 | mRoot->addFrameListener(mFrameListener);
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| 391 | }
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| 392 |
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| 393 | };
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| 394 |
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| 395 |
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| 396 |
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| 397 | #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
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| 398 | #define WIN32_LEAN_AND_MEAN
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| 399 | #include "windows.h"
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| 400 | #endif
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| 401 |
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| 402 | #ifdef __cplusplus
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| 403 | extern "C" {
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| 404 | #endif
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| 405 |
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| 406 | #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
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| 407 | INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR strCmdLine, INT )
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| 408 | #else
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| 409 | int main(int argc, char **argv)
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| 410 | #endif
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| 411 | {
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| 412 | // Create application object
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| 413 | FresnelApplication app;
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| 414 |
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| 415 | try {
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| 416 | app.go();
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| 417 | } catch( Exception& e ) {
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| 418 | #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
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| 419 | MessageBox( NULL, e.getFullDescription().c_str(), "An exception has occured!", MB_OK | MB_ICONERROR | MB_TASKMODAL);
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| 420 | #else
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| 421 | std::cerr << "An exception has occured: " << e.getFullDescription();
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| 422 | #endif
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| 423 | }
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| 424 |
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| 425 |
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| 426 | return 0;
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| 427 | }
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| 428 |
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| 429 | #ifdef __cplusplus
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| 430 | }
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| 431 | #endif
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