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/** \file \ingroup elbeem
*/
/******************************************************************************
*
* El'Beem - Free Surface Fluid Simulation with the Lattice Boltzmann Method
* Copyright 2003-2006 Nils Thuerey
*
* Basic interface for all simulation modules
*
*****************************************************************************/
#include "simulation_object.h"
#include "solver_interface.h"
#include "ntl_bsptree.h"
#include "ntl_ray.h"
#include "ntl_world.h"
#include "solver_interface.h"
#include "particletracer.h"
#include "elbeem.h"
#if PARALLEL==1
#include <omp.h>
#endif
#ifdef _WIN32
#else
#include <sys/time.h>
#endif
//! lbm factory functions
LbmSolverInterface* createSolver();
/******************************************************************************
* Constructor
*****************************************************************************/
SimulationObject::SimulationObject() :
ntlGeometryShader(),
mGeoStart(-100.0), mGeoEnd(100.0),
mpGiTree(NULL), mpGiObjects(NULL),
mpGlob(NULL),
mPanic( false ),
mDebugType( 1 /* =FLUIDDISPNothing*/ ),
mpLbm(NULL), mpParam( NULL ),
mShowSurface(true), mShowParticles(false),
mSelectedCid( NULL ),
mpElbeemSettings( NULL )
{
mpParam = new Parametrizer();
//for(int i=0; i<MAX_DEBDISPSET; i++) { mDebDispSet[i].type = (i); mDebDispSet[i].on = false; mDebDispSet[i].scale = 1.0; }
// reset time
mTime = 0.0;
}
/******************************************************************************
* Destructor
*****************************************************************************/
SimulationObject::~SimulationObject()
{
if(mpGiTree) delete mpGiTree;
if(mpElbeemSettings) delete mpElbeemSettings;
if(mpLbm) delete mpLbm;
if(mpParam) delete mpParam;
if(mpParts) delete mpParts;
debMsgStd("SimulationObject",DM_MSG,"El'Beem Done!\n",10);
}
/*****************************************************************************/
/*! init tree for certain geometry init */
/*****************************************************************************/
void SimulationObject::initGeoTree() {
// unused!! overriden by solver interface
if(mpGlob == NULL) {
errFatal("SimulationObject::initGeoTree error","Requires globals!", SIMWORLD_INITERROR);
return;
}
ntlScene *scene = mpGlob->getSimScene();
mpGiObjects = scene->getObjects();
if(mpGiTree != NULL) delete mpGiTree;
char treeFlag = (1<<(mGeoInitId+4));
mpGiTree = new ntlTree( 20, 4, // warning - fixed values for depth & maxtriangles here...
scene, treeFlag );
// unused!! overriden by solver interface
}
/*****************************************************************************/
/*! destroy tree etc. when geometry init done */
/*****************************************************************************/
void SimulationObject::freeGeoTree() {
if(mpGiTree != NULL) delete mpGiTree;
}
// copy & remember settings for later use
void SimulationObject::copyElbeemSettings(elbeemSimulationSettings *settings) {
mpElbeemSettings = new elbeemSimulationSettings;
*mpElbeemSettings = *settings;
mGeoInitId = settings->domainId+1;
debMsgStd("SimulationObject",DM_MSG,"mGeoInitId="<<mGeoInitId<<", domainId="<<settings->domainId, 8);
}
/******************************************************************************
* simluation interface: initialize simulation using the given configuration file
*****************************************************************************/
extern int glob_mpnum;
int SimulationObject::initializeLbmSimulation(ntlRenderGlobals *glob)
{
if(! isSimworldOk() ) return 1;
// already inited?
if(mpLbm) return 0;
mpGlob = glob;
if(!getVisible()) {
mpAttrs->setAllUsed();
return 0;
}
mGeoInitId = mpAttrs->readInt("geoinitid", mGeoInitId,"LbmSolverInterface", "mGeoInitId", false);
//mDimension, mSolverType are deprecated
string mSolverType("");
mSolverType = mpAttrs->readString("solver", mSolverType, "SimulationObject","mSolverType", false );
mpLbm = createSolver();
/* check lbm pointer */
if(mpLbm == NULL) {
errFatal("SimulationObject::initializeLbmSimulation","Unable to init LBM solver! ", SIMWORLD_INITERROR);
return 2;
}
debMsgStd("SimulationObject::initialized",DM_MSG,"IdStr:"<<mpLbm->getIdString() <<" LBM solver! ", 2);
mpParts = new ParticleTracer();
// for non-param simulations
mpLbm->setParametrizer( mpParam );
mpParam->setAttrList( getAttributeList() );
// not needed.. done in solver_init: mpParam->setSize ... in solver_interface
mpParam->parseAttrList();
mpLbm->setAttrList( getAttributeList() );
mpLbm->setSwsAttrList( getSwsAttributeList() );
mpLbm->parseAttrList();
mpParts->parseAttrList( getAttributeList() );
if(! isSimworldOk() ) return 3;
mpParts->setName( getName() + "_part" );
mpParts->initialize( glob );
if(! isSimworldOk() ) return 4;
// init material settings
string matMc("default");
matMc = mpAttrs->readString("material_surf", matMc, "SimulationObject","matMc", false );
mShowSurface = mpAttrs->readInt("showsurface", mShowSurface, "SimulationObject","mShowSurface", false );
mShowParticles = mpAttrs->readInt("showparticles", mShowParticles, "SimulationObject","mShowParticles", false );
checkBoundingBox( mGeoStart, mGeoEnd, "SimulationObject::initializeSimulation" );
mpLbm->setLbmInitId( mGeoInitId );
mpLbm->setGeoStart( mGeoStart );
mpLbm->setGeoEnd( mGeoEnd );
mpLbm->setRenderGlobals( mpGlob );
mpLbm->setName( getName() + "_lbm" );
mpLbm->setParticleTracer( mpParts );
if(mpElbeemSettings) {
// set further settings from API struct init
this->mOutFilename = string(mpElbeemSettings->outputPath);
mpLbm->initDomainTrafo( mpElbeemSettings->surfaceTrafo );
mpLbm->setSmoothing(1.0 * mpElbeemSettings->surfaceSmoothing, 1.0 * mpElbeemSettings->surfaceSmoothing);
mpLbm->setIsoSubdivs(mpElbeemSettings->surfaceSubdivs);
#if PARALLEL==1
mpLbm->setNumOMPThreads(mpElbeemSettings->threads);
#endif
mpLbm->setSizeX(mpElbeemSettings->resolutionxyz);
mpLbm->setSizeY(mpElbeemSettings->resolutionxyz);
mpLbm->setSizeZ(mpElbeemSettings->resolutionxyz);
mpLbm->setPreviewSize(mpElbeemSettings->previewresxyz);
mpLbm->setRefinementDesired(mpElbeemSettings->maxRefine);
mpLbm->setGenerateParticles(mpElbeemSettings->generateParticles);
// set initial particles
mpParts->setNumInitialParticles(mpElbeemSettings->numTracerParticles);
// surface generation flag
mpLbm->setSurfGenSettings(mpElbeemSettings->mFsSurfGenSetting);
string dinitType = string("no");
if (mpElbeemSettings->domainobsType==FLUIDSIM_OBSTACLE_PARTSLIP) dinitType = string("part");
else if(mpElbeemSettings->domainobsType==FLUIDSIM_OBSTACLE_FREESLIP) dinitType = string("free");
else /*if(mpElbeemSettings->domainobsType==FLUIDSIM_OBSTACLE_NOSLIP)*/ dinitType = string("no");
mpLbm->setDomainBound(dinitType);
mpLbm->setDomainPartSlip(mpElbeemSettings->domainobsPartslip);
mpLbm->setDumpVelocities(mpElbeemSettings->generateVertexVectors);
mpLbm->setFarFieldSize(mpElbeemSettings->farFieldSize);
debMsgStd("SimulationObject::initialize",DM_MSG,"Added domain bound: "<<dinitType<<" ps="<<mpElbeemSettings->domainobsPartslip<<" vv"<<mpElbeemSettings->generateVertexVectors<<","<<mpLbm->getDumpVelocities(), 9 );
debMsgStd("SimulationObject::initialize",DM_MSG,"Set ElbeemSettings values "<<mpLbm->getGenerateParticles(),10);
}
if(! mpLbm->initializeSolverMemory() ) { errMsg("SimulationObject::initialize","initializeSolverMemory failed"); mPanic=true; return 10; }
if(checkCallerStatus(FLUIDSIM_CBSTATUS_STEP, 0)) { errMsg("SimulationObject::initialize","initializeSolverMemory status"); mPanic=true; return 11; }
if(! mpLbm->initializeSolverGrids() ) { errMsg("SimulationObject::initialize","initializeSolverGrids failed"); mPanic=true; return 12; }
if(checkCallerStatus(FLUIDSIM_CBSTATUS_STEP, 0)) { errMsg("SimulationObject::initialize","initializeSolverGrids status"); mPanic=true; return 13; }
if(! mpLbm->initializeSolverPostinit() ) { errMsg("SimulationObject::initialize","initializeSolverPostin failed"); mPanic=true; return 14; }
if(checkCallerStatus(FLUIDSIM_CBSTATUS_STEP, 0)) { errMsg("SimulationObject::initialize","initializeSolverPostin status"); mPanic=true; return 15; }
// print cell type stats
bool printStats = true;
if(glob_mpnum>0) printStats=false; // skip in this case
if(printStats) {
const int jmax = sizeof(CellFlagType)*8;
int totalCells = 0;
int flagCount[jmax];
for(int j=0; j<jmax ; j++) flagCount[j] = 0;
int diffInits = 0;
LbmSolverInterface::CellIdentifier cid = mpLbm->getFirstCell();
for(; mpLbm->noEndCell( cid );
mpLbm->advanceCell( cid ) ) {
int flag = mpLbm->getCellFlag(cid,0);
int flag2 = mpLbm->getCellFlag(cid,1);
if(flag != flag2) {
diffInits++;
}
for(int j=0; j<jmax ; j++) {
if( flag&(1<<j) ) flagCount[j]++;
}
totalCells++;
}
mpLbm->deleteCellIterator( &cid );
char charNl = '\n';
debugOutNnl("SimulationObject::initializeLbmSimulation celltype stats: " <<charNl, 5);
debugOutNnl("no. of cells = "<<totalCells<<", "<<charNl ,5);
for(int j=0; j<jmax ; j++) {
std::ostringstream out;
if(flagCount[j]>0) {
out<<"\t" << flagCount[j] <<" x "<< convertCellFlagType2String( (CellFlagType)(1<<j) ) <<", " << charNl;
debugOutNnl(out.str(), 5);
}
}
// compute dist. of empty/bnd - fluid - if
// cfEmpty = (1<<0), cfBnd = (1<< 2), cfFluid = (1<<10), cfInter = (1<<11),
if(1){
std::ostringstream out;
out.precision(2); out.width(4);
int totNum = flagCount[1]+flagCount[2]+flagCount[7]+flagCount[8];
double ebFrac = (double)(flagCount[1]+flagCount[2]) / totNum;
double flFrac = (double)(flagCount[7]) / totNum;
double ifFrac = (double)(flagCount[8]) / totNum;
//???
out<<"\tFractions: [empty/bnd - fluid - interface - ext. if] = [" << ebFrac<<" - " << flFrac<<" - " << ifFrac<<"] "<< charNl;
if(diffInits > 0) {
debMsgStd("SimulationObject::initializeLbmSimulation",DM_MSG,"celltype Warning: Diffinits="<<diffInits<<"!" , 5);
}
debugOutNnl(out.str(), 5);
}
} // cellstats
// might be modified by mpLbm
//mpParts->setStart( mGeoStart );? mpParts->setEnd( mGeoEnd );?
mpParts->setStart( mpLbm->getGeoStart() );
mpParts->setEnd( mpLbm->getGeoEnd() );
mpParts->setCastShadows( false );
mpParts->setReceiveShadows( false );
mpParts->searchMaterial( glob->getMaterials() );
// this has to be inited here - before, the values might be unknown
IsoSurface *surf = mpLbm->getSurfaceGeoObj();
if(surf) {
surf->setName( "final" ); // final surface mesh
// warning - this might cause overwriting effects for multiple sims and geom dump...
surf->setCastShadows( true );
surf->setReceiveShadows( false );
surf->searchMaterial( glob->getMaterials() );
if(mShowSurface) mObjects.push_back( surf );
}
#ifdef ELBEEM_PLUGIN
mShowParticles=1; // for e.g. dumping
#endif // ELBEEM_PLUGIN
if((mpLbm->getGenerateParticles()>0.0)||(mpParts->getNumInitialParticles()>0)) {
mShowParticles=1;
mpParts->setDumpParts(true);
}
//debMsgStd("SimulationObject::init",DM_NOTIFY,"Using envvar ELBEEM_DUMPPARTICLE to set mShowParticles, DEBUG!",1);
//} // DEBUG ENABLE!!!!!!!!!!
if(mShowParticles) {
mObjects.push_back(mpParts);
}
// add objects to display for debugging (e.g. levelset particles)
vector<ntlGeometryObject *> debugObjs = mpLbm->getDebugObjects();
for(size_t i=0;i<debugObjs.size(); i++) {
debugObjs[i]->setCastShadows( false );
debugObjs[i]->setReceiveShadows( false );
debugObjs[i]->searchMaterial( glob->getMaterials() );
mObjects.push_back( debugObjs[i] );
debMsgStd("SimulationObject::init",DM_NOTIFY,"Added debug obj "<<debugObjs[i]->getName(), 10 );
}
return 0;
}
/*! set current frame */
void SimulationObject::setFrameNum(int num) {
// advance parametrizer
mpParam->setFrameNum(num);
}
/******************************************************************************
* simluation interface: advance simulation another step (whatever delta time that might be)
*****************************************************************************/
void SimulationObject::step( void )
{
if(mpParam->getCurrentAniFrameTime()>0.0) {
// dont advance for stopped time
mpLbm->step();
mTime += mpParam->getTimestep();
//if(mTime>0.001) { errMsg("DEBUG!!!!!!!!","quit mlsu..."); xit(1); } // PROFILE DEBUG TEST!
}
if(mpLbm->getPanic()) mPanic = true;
checkCallerStatus(FLUIDSIM_CBSTATUS_STEP, 0);
//if((mpElbeemSettings)&&(mpElbeemSettings->runsimCallback)) {
//int ret = (mpElbeemSettings->runsimCallback)(mpElbeemSettings->runsimUserData, FLUIDSIM_CBSTATUS_STEP, 0);
//errMsg("runSimulationCallback cbtest1"," "<<this->getName()<<" ret="<<ret);
//}
//debMsgStd("SimulationObject::step",DM_MSG," Sim '"<<mName<<"' stepped to "<<mTime<<" (stept="<<(mpParam->getTimestep())<<", framet="<<getFrameTime()<<") ", 10);
}
/*! prepare visualization of simulation for e.g. raytracing */
void SimulationObject::prepareVisualization( void ) {
if(mPanic) return;
mpLbm->prepareVisualization();
}
/******************************************************************************/
/* get current start simulation time */
double SimulationObject::getStartTime( void ) {
//return mpParam->calculateAniStart();
return mpParam->getAniStart();
}
/* get time for a single animation frame */
double SimulationObject::getFrameTime( int frame ) {
return mpParam->getAniFrameTime(frame);
}
/* get time for a single time step */
double SimulationObject::getTimestep( void ) {
return mpParam->getTimestep();
}
/******************************************************************************
* return a pointer to the geometry object of this simulation
*****************************************************************************/
//ntlGeometryObject *SimulationObject::getGeometry() { return mpMC; }
vector<ntlGeometryObject *>::iterator
SimulationObject::getObjectsBegin()
{
return mObjects.begin();
}
vector<ntlGeometryObject *>::iterator
SimulationObject::getObjectsEnd()
{
return mObjects.end();
}
/******************************************************************************
* GUI - display debug info
*****************************************************************************/
void SimulationObject::drawDebugDisplay() {
#ifndef NOGUI
if(!getVisible()) return;
//if( mDebugType > (MAX_DEBDISPSET-1) ){ errFatal("SimulationObject::drawDebugDisplay","Invalid debug type!", SIMWORLD_GENERICERROR); return; }
//mDebDispSet[ mDebugType ].on = true;
//errorOut( mDebugType <<"//"<< mDebDispSet[mDebugType].type );
mpLbm->debugDisplay( mDebugType );
//::lbmMarkedCellDisplay<>( mpLbm );
mpLbm->lbmMarkedCellDisplay();
#endif
}
/* GUI - display interactive info */
void SimulationObject::drawInteractiveDisplay()
{
#ifndef NOGUI
if(!getVisible()) return;
if(mSelectedCid) {
// in debugDisplayNode if dispset is on is ignored...
mpLbm->debugDisplayNode( FLUIDDISPGrid, mSelectedCid );
}
#endif
}
/*******************************************************************************/
// GUI - handle mouse movement for selection
/*******************************************************************************/
void SimulationObject::setMousePos(int x,int y, ntlVec3Gfx org, ntlVec3Gfx dir)
{
normalize( dir );
// assume 2D sim is in XY plane...
double zplane = (mGeoEnd[2]-mGeoStart[2])*0.5;
double zt = (zplane-org[2]) / dir[2];
ntlVec3Gfx pos(
org[0]+ dir[0] * zt,
org[1]+ dir[1] * zt, 0.0);
mSelectedCid = mpLbm->getCellAt( pos );
//errMsg("SMP ", mName<< x<<" "<<y<<" - "<<dir );
x = y = 0; // remove warning
}
void SimulationObject::setMouseClick()
{
if(mSelectedCid) {
//::debugPrintNodeInfo<>( mpLbm, mSelectedCid, mpLbm->getNodeInfoString() );
mpLbm->debugPrintNodeInfo( mSelectedCid );
}
}
/*! notify object that dump is in progress (e.g. for field dump) */
void SimulationObject::notifyShaderOfDump(int dumptype, int frameNr,char *frameNrStr,string outfilename) {
if(!mpLbm) return;
mpLbm->notifySolverOfDump(dumptype, frameNr,frameNrStr,outfilename);
checkCallerStatus(FLUIDSIM_CBSTATUS_NEWFRAME, frameNr);
}
/*! check status (e.g. stop/abort) from calling program, returns !=0 if sth. happened... */
int SimulationObject::checkCallerStatus(int status, int frame) {
//return 0; // DEBUG
int ret = 0;
if((mpElbeemSettings)&&(mpElbeemSettings->runsimCallback)) {
ret = (mpElbeemSettings->runsimCallback)(mpElbeemSettings->runsimUserData, status,frame);
if(ret!=FLUIDSIM_CBRET_CONTINUE) {
if(ret==FLUIDSIM_CBRET_STOP) {
debMsgStd("SimulationObject::notifySolverOfDump",DM_NOTIFY,"Got stop signal from caller",1);
setElbeemState( SIMWORLD_STOP );
}
else if(ret==FLUIDSIM_CBRET_ABORT) {
errFatal("SimulationObject::notifySolverOfDump","Got abort signal from caller, aborting...", SIMWORLD_GENERICERROR );
mPanic = 1;
}
else {
errMsg("SimulationObject::notifySolverOfDump","Invalid callback return value: "<<ret<<", ignoring... ");
}
}
}
//debMsgStd("SimulationObject::checkCallerStatus",DM_MSG, "s="<<status<<",f="<<frame<<" "<<this->getName()<<" ret="<<ret);
if(isSimworldOk()) return 0;
return 1;
}
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