[897] | 1 | #include "OgrePlatformQueryManager.h"
|
---|
| 2 | #include "OcclusionQuery.h"
|
---|
| 3 | #include <OgreSceneManager.h>
|
---|
| 4 | #include <OgreLogManager.h>
|
---|
| 5 | #include <OgreStringConverter.h>
|
---|
| 6 | #include <vector>
|
---|
| 7 | #include <OgreSubEntity.h>
|
---|
[925] | 8 | #include "OgrePlatformHierarchyInterface.h"
|
---|
[897] | 9 |
|
---|
| 10 | namespace Ogre {
|
---|
| 11 |
|
---|
| 12 | //-----------------------------------------------------------------------
|
---|
[925] | 13 | PlatformQueryManager::PlatformQueryManager(GtpVisibility::HierarchyInterface *hierarchyInterface,
|
---|
[897] | 14 | Viewport *vp, int queryModes):
|
---|
| 15 | QueryManager(hierarchyInterface, queryModes),
|
---|
| 16 | mViewport(vp),
|
---|
| 17 | mWasInitialised(false)
|
---|
| 18 | {
|
---|
| 19 | }
|
---|
| 20 | //-----------------------------------------------------------------------
|
---|
[925] | 21 | bool PlatformQueryManager::ShootRay(const Ray &ray,
|
---|
| 22 | std::vector<Mesh *> *visibleMeshes,
|
---|
| 23 | bool isGlobalLine)
|
---|
[897] | 24 | {
|
---|
| 25 | // run OGRE ray shooting query
|
---|
| 26 | return false;
|
---|
| 27 | }
|
---|
| 28 | //-----------------------------------------------------------------------
|
---|
| 29 | void PlatformQueryManager::ComputeFromPointVisibility(const Vector3 &point,
|
---|
| 30 | GtpVisibility::NodeInfoContainer *visibleNodes,
|
---|
| 31 | GtpVisibility::MeshInfoContainer *visibleGeometry,
|
---|
| 32 | GtpVisibility::PatchInfoContainer *visiblePatches,
|
---|
| 33 | bool relativeVisibility)
|
---|
| 34 | {
|
---|
| 35 | SceneManager *sm = //dynamic_cast<PlatformHierarchyInterface *>
|
---|
| 36 | static_cast<PlatformHierarchyInterface *>
|
---|
| 37 | (mHierarchyInterface)->GetSceneManager();
|
---|
| 38 |
|
---|
| 39 | // create a camera for the point query
|
---|
| 40 | Camera *cam = sm->createCamera("PointQueryCam");
|
---|
| 41 |
|
---|
| 42 | //save old camera
|
---|
| 43 | Camera *savedCam = mViewport->getCamera();
|
---|
| 44 |
|
---|
| 45 | // --- initialise new camera
|
---|
| 46 | mViewport->setCamera(cam);
|
---|
| 47 | cam->setPosition(point);
|
---|
| 48 |
|
---|
| 49 | cam->setNearClipDistance(savedCam->getNearClipDistance());
|
---|
| 50 | cam->setFarClipDistance(savedCam->getFarClipDistance());
|
---|
| 51 |
|
---|
| 52 | // set frustum to 45 degrees so all the scene can be captured with 6 shots
|
---|
| 53 | cam->setAspectRatio(1.0);
|
---|
| 54 | cam->setFOVy(Radian(Math::HALF_PI));
|
---|
| 55 |
|
---|
| 56 | int sign = -1;
|
---|
| 57 |
|
---|
| 58 | // ---- capture visibility from all 6 directions
|
---|
| 59 | for (int dir=0; dir < 6; dir++)
|
---|
| 60 | {
|
---|
| 61 | sign *= -1;
|
---|
| 62 |
|
---|
[140] | 63 | // Print camera details
|
---|
[897] | 64 | std::stringstream d;
|
---|
[140] | 65 | d << "Point query camera: " + StringConverter::toString(cam->getDerivedPosition()) +
|
---|
[897] | 66 | " " + "O: " + StringConverter::toString(cam->getDerivedOrientation());
|
---|
| 67 | LogManager::getSingleton().logMessage(d.str());
|
---|
[173] | 68 |
|
---|
[897] | 69 | // prevent from initialising geometry / node array again
|
---|
| 70 | if (dir > 0)
|
---|
| 71 | {
|
---|
| 72 | mWasInitialised = true;
|
---|
| 73 | }
|
---|
| 74 |
|
---|
| 75 | ComputeCameraVisibility(*cam, visibleNodes, visibleGeometry, visiblePatches,
|
---|
| 76 | relativeVisibility);
|
---|
| 77 | //mViewport->getTarget()->update(); for(int j=0; j<10000000; j++) printf("wait");
|
---|
| 78 |
|
---|
| 79 | // permute directions
|
---|
| 80 | Vector3 direction(0,0,0);
|
---|
| 81 | direction[dir/2] = sign;
|
---|
| 82 |
|
---|
| 83 | cam->setDirection(direction);
|
---|
| 84 | }
|
---|
| 85 |
|
---|
| 86 | // reset camera
|
---|
| 87 | mViewport->setCamera(savedCam);
|
---|
| 88 | }
|
---|
| 89 | //-----------------------------------------------------------------------
|
---|
| 90 | void PlatformQueryManager::ComputeCameraVisibility(const Camera &camera,
|
---|
| 91 | GtpVisibility::NodeInfoContainer *visibleNodes,
|
---|
| 92 | GtpVisibility::MeshInfoContainer *visibleGeometry,
|
---|
| 93 | GtpVisibility::PatchInfoContainer *visiblePatches,
|
---|
| 94 | bool relativeVisibility)
|
---|
| 95 | {
|
---|
| 96 | // we need access to the scene manager and the rendersystem
|
---|
| 97 | PlatformHierarchyInterface *pfHierarchyInterface =
|
---|
| 98 | //dynamic_cast<PlatformHierarchyInterface *>(mHierarchyInterface);
|
---|
| 99 | static_cast<PlatformHierarchyInterface *>(mHierarchyInterface);
|
---|
| 100 |
|
---|
| 101 | SceneManager *sm = pfHierarchyInterface->GetSceneManager();
|
---|
| 102 |
|
---|
| 103 |
|
---|
| 104 | // const_cast allowed because camera is not changed in renderScene
|
---|
| 105 | Camera *pCam = const_cast<Camera *>(&camera);
|
---|
| 106 |
|
---|
| 107 | // disable overlays, reset them later
|
---|
| 108 | bool overlayEnabled = mViewport->getOverlaysEnabled();
|
---|
| 109 | mViewport->setOverlaysEnabled(false);
|
---|
| 110 |
|
---|
| 111 | // clear background with black (i.e., not a valid item id)
|
---|
| 112 | ColourValue bg = mViewport->getBackgroundColour();
|
---|
| 113 | mViewport->setBackgroundColour(ColourValue(0, 0, 0, 0));
|
---|
| 114 | //pfHierarchyInterface->GetRenderSystem()->clearFrameBuffer(FBT_COLOUR | FBT_DEPTH);
|
---|
| 115 | #ifdef ITEM_BUFFER
|
---|
| 116 | // initialise item buffer (if not already initialised)
|
---|
| 117 | InitItemBuffer(visibleGeometry, visiblePatches);
|
---|
| 118 |
|
---|
| 119 | //-- render scene with item buffer (i.e., objects with their id as color codes)
|
---|
| 120 |
|
---|
| 121 | // enable item buffer (must be provided by scene manager)
|
---|
| 122 | bool useItemBuffer = true;
|
---|
| 123 | sm->setOption("UseItemBuffer", &useItemBuffer);
|
---|
| 124 | #endif // ITEM_BUFFER
|
---|
| 125 |
|
---|
| 126 | sm->_renderScene(pCam, mViewport, false); // render item buffer
|
---|
| 127 |
|
---|
| 128 | #ifdef ITEM_BUFFER
|
---|
| 129 | //-- collect results
|
---|
| 130 | CollectItemBufferResults(visibleGeometry, visiblePatches);
|
---|
| 131 |
|
---|
[173] | 132 | //-- reset options
|
---|
| 133 |
|
---|
[897] | 134 | useItemBuffer = false; // don't need item buffer anymore
|
---|
[173] | 135 | sm->setOption("UseItemBuffer", &useItemBuffer);
|
---|
[897] | 136 | #endif // ITEM_BUFFER
|
---|
[173] | 137 |
|
---|
| 138 | mWasInitialised = false; // reset initialised - flag
|
---|
[897] | 139 | mViewport->setOverlaysEnabled(overlayEnabled); // reset old overlay status
|
---|
[173] | 140 | mViewport->setBackgroundColour(bg); // reset background color
|
---|
[897] | 141 | }
|
---|
| 142 | #ifdef ITEM_BUFFER
|
---|
| 143 | //-----------------------------------------------------------------------
|
---|
| 144 | void PlatformQueryManager::CollectItemBufferResults(
|
---|
| 145 | GtpVisibility::MeshInfoContainer *visibleGeometry,
|
---|
| 146 | GtpVisibility::PatchInfoContainer *visiblePatches)
|
---|
| 147 | {
|
---|
| 148 | int dimx = 0;
|
---|
| 149 | int dimy = 0;
|
---|
| 150 |
|
---|
| 151 | // copy frame buffer
|
---|
| 152 | uchar *buf = mViewport->getTarget()->getBufferContents(dimx, dimy);
|
---|
| 153 |
|
---|
| 154 | //std::stringstream d; d << "dimx: " << dimx << ", dimy: " << dimy; LogManager::getSingleton().logMessage(d.str());
|
---|
| 155 |
|
---|
| 156 | // loop through frame buffer and collect visible pixels
|
---|
| 157 | for (int idx = 0; idx < dimy * dimx * 3; idx += 3)
|
---|
| 158 | {
|
---|
| 159 | //-- decode color code to receive id
|
---|
| 160 | int id = buf[idx] << 16;
|
---|
| 161 | id += buf[idx + 1] << 8;
|
---|
| 162 | id += buf[idx + 2];
|
---|
| 163 |
|
---|
| 164 | //std::stringstream d; d << "myid: " << (int)buf[idx] << " " << (int)buf[idx + 1] << " " << (int)buf[idx + 2]; LogManager::getSingleton().logMessage(d.str());
|
---|
| 165 |
|
---|
| 166 | // if valid id <= add visibility (id values start at 1)
|
---|
| 167 | if (mQueryModes == PATCH_VISIBILITY)
|
---|
| 168 | {
|
---|
| 169 | if ((id > 0) && (id < (int)visiblePatches->size()))
|
---|
| 170 | {
|
---|
| 171 | ((*visiblePatches)[id]).AddVisibility(1, 0);
|
---|
| 172 | }
|
---|
| 173 | }
|
---|
| 174 | else if (mQueryModes == GEOMETRY_VISIBILITY)
|
---|
| 175 | {
|
---|
| 176 | if ((id > 0) && (id < (int)visibleGeometry->size()))
|
---|
| 177 | {
|
---|
| 178 | ((*visibleGeometry)[id]).AddVisibility(1, 0);
|
---|
| 179 | }
|
---|
| 180 | }
|
---|
[171] | 181 | }
|
---|
| 182 |
|
---|
[173] | 183 | delete [] buf;
|
---|
| 184 | }
|
---|
[897] | 185 |
|
---|
| 186 | //-----------------------------------------------------------------------
|
---|
| 187 | void PlatformQueryManager::InitItemBuffer(
|
---|
| 188 | GtpVisibility::MeshInfoContainer *visibleGeometry,
|
---|
| 189 | GtpVisibility::PatchInfoContainer *visiblePatches)
|
---|
| 190 | {
|
---|
| 191 | if (mWasInitialised)
|
---|
| 192 | return;
|
---|
| 193 |
|
---|
| 194 | mWasInitialised = true;
|
---|
| 195 |
|
---|
| 196 | SceneManager *sm =
|
---|
| 197 | //dynamic_cast<PlatformHierarchyInterface *>(mHierarchyInterface)->GetSceneManager();
|
---|
| 198 | static_cast<PlatformHierarchyInterface *>(mHierarchyInterface)->GetSceneManager();
|
---|
| 199 |
|
---|
| 200 | SceneManager::EntityIterator it = sm->getEntityIterator();
|
---|
| 201 |
|
---|
| 202 | // TODO: make the function more efficient
|
---|
| 203 |
|
---|
| 204 | visibleGeometry->clear();
|
---|
| 205 | visiblePatches->clear();
|
---|
| 206 |
|
---|
| 207 | int id = 0;
|
---|
| 208 |
|
---|
| 209 | /* We can either use patches or meshes. If patches are used, an unique id must
|
---|
| 210 | be given each patch. Otherwise the same id must be given to all patches belonging
|
---|
| 211 | to the same mesh.
|
---|
| 212 | */
|
---|
| 213 | while (it.hasMoreElements())
|
---|
| 214 | {
|
---|
| 215 | Entity *ent = it.getNext();
|
---|
| 216 |
|
---|
[171] | 217 | for (int i = 0; i < (int)ent->getNumSubEntities(); ++i)
|
---|
| 218 | {
|
---|
| 219 | SubEntity *subEnt = ent->getSubEntity(i);
|
---|
| 220 |
|
---|
[174] | 221 | if (mQueryModes == PATCH_VISIBILITY)
|
---|
[171] | 222 | {
|
---|
| 223 | ++ id;
|
---|
| 224 | visiblePatches->push_back(GtpVisibility::PatchInfo(subEnt, 0, 0));
|
---|
| 225 | }
|
---|
| 226 |
|
---|
| 227 | subEnt->setId(id);
|
---|
| 228 | //subEnt->setId((41 << 16) + (4 << 8) + 60);
|
---|
[897] | 229 | }
|
---|
| 230 |
|
---|
| 231 | if (mQueryModes == GEOMETRY_VISIBILITY)
|
---|
| 232 | {
|
---|
| 233 | visibleGeometry->push_back(GtpVisibility::MeshInfo(ent, 0, 0));
|
---|
| 234 | ++ id;
|
---|
| 235 | }
|
---|
| 236 | }
|
---|
| 237 | }
|
---|
| 238 | #endif // ITEM_BUFFER
|
---|
| 239 | //-----------------------------------------------------------------------
|
---|
| 240 | void PlatformQueryManager::SetViewport(Viewport *vp)
|
---|
| 241 | {
|
---|
| 242 | mViewport = vp;
|
---|
| 243 | }
|
---|
| 244 | } // namespace Ogre
|
---|