void QVX_Sim::SimLoop(QString* pSimMessage)
{
std::string tmp; //need to link this up to get info back...
if (!Import(NULL, NULL, &tmp)) return;
int Count = 0; //Possibly redundant with internal sim count.
int LastCount = 0;
bool IsStillDrawing;
Vec3D<> CurSelPos;
QString PosLabel;
bool InternalEnding = false;
QString Message, DispMessage;
std::string RetMsg;
QTime tLastPlot; //plot point add every...
QTime tLastStatus; //status text box updated...
// QTime tLastStatCalc; //simulation max/mins calculated every...
tLastPlot.start();
tLastStatus.start();
// tLastStatCalc.start();
emit ReqUiUpdate(); //for slider ranges that depend on dt or other sim params
emit StartExternalGLUpdate(DEFAULT_DISPLAY_UPDATE_MS);
StopSim = false;
Running = true;
Paused = false;
//initialize the COM at the start of the simulation
IniCM=GetCM();
Vec3D<> LastCM = IniCM;
int StatusNumber = 1, PlotPointNumber = 1;
double UpStatEv = 500; //Updates status pane every X ms
int UpPlotEv = 30; //updates plot every X ms when not plotting every point.
char PlotDataTypes;
bool PlotVis, StatusVis;
while (true){ //do this step...
if (StopConditionMet()){InternalEnding = true; StatToCalc=CALCSTAT_ALL; UpdateStats(); RetMsg+="Simulation stop condition reached.\n";break;}//if stop condition met...
//figure out what stats we need to calculate
StatToCalc=CALCSTAT_NONE;
emit IsPlotVisible(&PlotVis);
bool PlottingPoint = (LogEvery?true:tLastPlot.elapsed() > PlotPointNumber*UpPlotEv) && PlotVis;
if (PlottingPoint){ //ensure we calculate the info we want to plot
emit GetPlotRqdStats(&PlotDataTypes);
StatToCalc |= PlotDataTypes;
}
emit IsStatusTextVisible(&StatusVis);
bool UpdatingStatus = (tLastStatus.elapsed() > StatusNumber*UpStatEv) && StatusVis;
if (UpdatingStatus){StatToCalc |= CALCSTAT_COM;} //calc any data we need in the text status box
bool DrawingGLLocal = (GLUpdateEveryNFrame != -1 && Count%GLUpdateEveryNFrame==0);
if (DrawingGLLocal || NeedStatsUpdate){ //calc any data we need to draw the opengl view...
StatToCalc |= StatRqdToDraw();
NeedStatsUpdate = false;
if (LockCoMToCenter) StatToCalc |= CALCSTAT_COM;
}
// if (tLastStatCalc.elapsed() > StatCalcNumber*30){CalcStat=true; StatCalcNumber++; /*tLastStatCalc.restart();*/}
if (!TimeStep(&RetMsg)){InternalEnding = true; break;}//if something happened in this timestep
if (DrawingGLLocal){
IsStillDrawing = true;
ReqGLDrawingStatus(&IsStillDrawing);
while (IsStillDrawing){ //wait to finish drawing the previous timestep before continuing
LOCALSLEEP(1);
ReqGLDrawingStatus(&IsStillDrawing); //are
}
emit ReqGLUpdate();
}
if (StopSim) break;
while(Paused){
ActuallyPaused = true;
if (StopSim) break; //kick out of the loop if we've stopped...
LOCALSLEEP(100);
}
if(UpdatingStatus){
// emit IsStatusTextVisible...
if (CurXSel != -1){PosLabel = "Vox "+QString::number(XtoSIndexMap[CurXSel]) + "(sim)"; CurSelPos = VoxArray[XtoSIndexMap[CurXSel]].GetCurPos()*1000; }//position in mm
else {PosLabel = "CoM "; CurSelPos = SS.CurCM*1000;} //center of mass in mm if nothing else selected
Message = "Time " + QString::number(CurTime, 'g', 3) + " Sec" +
"\nStep Num " + QString::number(CurStepCount) +
"\nTime Step = " + QString::number(dt, 'g', 3)+ " Sec" +
"\nDisplay Rate = "+ QString::number((Count-LastCount)/(UpStatEv/1000.0), 'g', 3)+" Steps/sec" +
"\n" + PosLabel + " X:"+ QString::number(CurSelPos.x, 'g', 3)+" Y:"+ QString::number(CurSelPos.y, 'g', 3)+" Z:"+ QString::number(CurSelPos.z, 'g', 3)+ " mm" +
"\nCoM Displacement = "+ QString::number((SS.CurCM-IniCM).Length()*1000, 'g', 3)+" mm" +
"\nCoM Velocity = "+ QString::number((SS.CurCM-LastCM).Length()*1000/(dt*(Count-LastCount)), 'g', 3)+" mm/s\n";
if (pEnv->IsFloorEnabled()) Message += "Voxel touching ground: " + QString::number(GetNumTouchingFloor()) + "\n";
Message += "\n";
LastCM = SS.CurCM;
if (LogEvery) ApproxMSperLog = (double)tLastStatus.elapsed()/(Count-LastCount); //only update ms per step if its not fixed by the timer
LastCount = Count;
emit UpdateText(Message);
StatusNumber++;
}
if (PlottingPoint){
if (LogEvery) emit ReqAddPlotPoint(GetCurTime());
else {
ApproxMSperLog = UpPlotEv;
emit ReqAddPlotPoint(GetCurTime());
PlotPointNumber++;
}
}
// if (StatCalcNumber == INT_MAX){StatCalcNumber=1; tLastStatCalc.restart();} //avoid int rollover for our counters
if (StatusNumber == INT_MAX){StatusNumber=1; tLastStatus.restart();}
if (PlotPointNumber == INT_MAX){PlotPointNumber=1; tLastPlot.restart();}
Count++;
}
emit StopExternalGLUpdate();
// emit SetExternalGLUpdate(false);
Running = false;
Paused = false;
Message = "Time " + QString::number(CurTime, 'g', 3) + " Sec" +
"\nStep Num " + QString::number(CurStepCount) +
"\nTime Step = " + QString::number(dt, 'g', 3)+ " Sec" +
"\n" + PosLabel + " X:"+ QString::number(CurSelPos.x, 'g', 3)+" Y:"+ QString::number(CurSelPos.y, 'g', 3)+" Z:"+ QString::number(CurSelPos.z, 'g', 3)+ " mm" +
"\nCOM_Dist = "+ QString::number((SS.CurCM-IniCM).Length()*1000, 'g', 3)+" mm\n\n";
RetMsg += "Simulation stopped.\n";
Message += RetMsg.c_str();
DispMessage = Message + "\nFinal Conditions:\nStep = " + QString::number(CurStepCount) + "\nTime Step = " + QString::number(dt)+"\nKinetic Energy = " + QString::number(SS.TotalObjKineticE)+"\n" ;
emit UpdateText(DispMessage);
if (InternalEnding) emit SimEndedInternally(RetMsg.c_str());
// Running = false;
}
void QVX_TensileTest::RunTensileTest(QString* pDispMessage)
{
QFile File(OutFilePath);
if (!File.open(QIODevice::WriteOnly | QIODevice::Text)) {
ProgressMessage = "Could not open file. Aborting.";
return;
}
QTextStream out(&File);
// double CurMaxDisp = 9e9;
std::string IntMsg;
vfloat StepPercAmt = 1.0/NumStep;
int VoxCount = NumVox();
int count = 0;
int MinimumPerStep = 5;
int NumBCs = pEnv->GetNumBCs();
for (int j=0; j<NumBCs; j++){
if (pEnv->GetBC(j)->Displace.Length2() == 0 ) continue; //if zero displacement, continue
out << "Disp (m)" << "\t" << "Force (N)" << "\t";
if (IsBasicTensile){out << "Strain (%)" << "\t" << "Stress (MPa)" << "\t" << "Modulus (MPa)" << "\t";}
}
out << "\n";
double LastStress; //so we can calculate modulus at each point...
double LastStrain;
for (int i=0; i<NumStep; i++){
ProgressMessage = "Performing tensile test...";
for (int j=0; j<VoxCount; j++) VoxArray[j].ScaleExternalInputs((i+1)*StepPercAmt);
//wiat to settle between timesteps...
int LastBroken = -1;
ClearHistories(); //needed so it doesn't immediately "converge" on the next time step
while (NumBroken() != LastBroken){ //if one breaks, repeat the settling undtil we're done breaking...
LastBroken = NumBroken();
EnableFailure(false);
// SetSlowDampZ(CurDamp);
count = 0;
// bool LastUnder = false; //were we under the threshhold last time?
// while (!LastUnder || CurMaxDisp > ConvThresh){
while (!StopConditionMet()){
// if (CurMaxDisp < ConvThresh) LastUnder = true;
for (int i=0; i<MinimumPerStep; i++){
if (CancelFlag) break;
if (!TimeStep(&IntMsg)){ //always do at least 5 steps...
ProgressMessage = "Tensile test failed. \n \n" + IntMsg;
CancelFlag = true; //get outta here!
}
// CurMaxDisp = SS.NormObjDisp;
}
if (CancelFlag) break;
count+=MinimumPerStep;
if (count > 20000){
QString Num = QString::number(MaxMoveHistory[0]*1000);
ProgressMessage = "Simulation not converging at " + Num.toStdString() + ". \n Retry with larger threshold.";
}
}
if (CancelFlag) break;
EnableFailure(true); //do one step to apply breaking and re-settle as needed...
if (!TimeStep(&IntMsg)){
ProgressMessage = "Tensile test failed. \n \n" + IntMsg;
CancelFlag = true; //get outta here!
}
}
for (int j=0; j<NumBCs; j++){
CVX_FRegion* pThisBC = pEnv->GetBC(j);
if (pThisBC->Displace.Length2() != 0 ){ //if non-zero displacement
double CurDisp = pThisBC->Displace.Length()*(i+1.0)/((double)NumStep);
double tmp2 = -GetSumForceDir(pThisBC);
out << CurDisp << "\t" << tmp2 << "\t";
if (IsBasicTensile){ //only two materials, only one with displacement, so we should only ever enter here once!!
double ThisStress = tmp2/CSArea;
double ThisStrain = CurDisp/IniLength;
out << ThisStrain*100 << "\t" << ThisStress/1e6 << "\t";
if (i!=0) out << (ThisStress-LastStress)/(ThisStrain-LastStrain)/1e6 << "\t";
else out << "" << "\t";
LastStress = ThisStress;
LastStrain = ThisStrain;
}
}
}
out << "\n";
// for (int k=0; k<VoxArray.size(); k++){
// VoxArray[k].ExternalDisp *= (i+2.0)/(i+1.0);
// }
CurTick = i+1;
}
int stop = 1;
File.close();
ProgressMessage = ""; //flag to not display message boc on return...
TestRunning = false;
emit StopExternalGLUpdate();
}
void QVX_TensileTest::RunTensileTest(QString* pDispMessage)
{
QFile File(OutFilePath);
if (!File.open(QIODevice::WriteOnly | QIODevice::Text)) {
ProgressMessage = "Could not open file. Aborting.";
return;
}
QTextStream out(&File);
// double CurMaxDisp = 9e9;
std::string IntMsg;
vfloat StepPercAmt = 1.0/NumStep;
int VoxCount = NumVox();
int count = 0;
int MinimumPerStep = 5;
int NumBCs = pEnv->GetNumBCs();
for (int j=0; j<NumBCs; j++){
if (pEnv->GetBC(j)->Displace.Length2() == 0 ) continue; //if zero displacement, continue
out << "Disp (m)" << "\t" << "Force (N)" << "\t";
if (IsBasicTensile){out << "Strain (%)" << "\t" << "Stress (MPa)" << "\t" << "Modulus (MPa)" << "\t";}
}
out << "\n";
double LastStress; //so we can calculate modulus at each point for simple tensile...
double LastStrain;
double MaxMotion = -FLT_MAX; //the stop condition will be a threshold of this in auto mode
double LastMotion = 0;
bool FoundMaxMotion = false;
if (AutoConverge){ ConvThresh = 0; SetStopConditionValue(ConvThresh);}//don't stop until we get a max
for (int i=0; i<NumStep; i++){
ProgressMessage = "Performing tensile test...";
for (int j=0; j<VoxCount; j++) VoxArray[j].ScaleExternalInputs((i+1)*StepPercAmt);
//wiat to settle between timesteps...
int LastBroken = -1;
ClearHistories(); //needed so it doesn't immediately "converge" on the next time step
while (NumBroken() != LastBroken){ //if one breaks, repeat the settling until we're done breaking...
LastBroken = NumBroken();
EnableFeature(VXSFEAT_FAILURE, false);
// EnableFailure(false);
// SetSlowDampZ(CurDamp);
count = 0;
// bool LastUnder = false; //were we under the threshhold last time?
// while (!LastUnder || CurMaxDisp > ConvThresh){
while (!StopConditionMet()){
// if (CurMaxDisp < ConvThresh) LastUnder = true;
for (int i=0; i<MinimumPerStep; i++){
if (CancelFlag) break;
if (!TimeStep(&IntMsg)){ //always do at least 5 steps...
ProgressMessage = "Tensile test failed. \n \n" + IntMsg;
CancelFlag = true; //get outta here!
}
// CurMaxDisp = SS.NormObjDisp;
}
if (CancelFlag) break;
if (!FoundMaxMotion && AutoConverge){
if (MotionZeroed){ //find first max motion (actually max KE, but close enough)
FoundMaxMotion = true;
ConvThresh = LastMotion / AutoConvergeExp;
SetStopConditionValue(ConvThresh);
//ProgressMessage = "Auto convergence threshhold calculated: " + QString::number(ConvThresh).toStdString();
}
else LastMotion = SS.MaxVoxVel*dt;
}
if (count%100==0){
ProgressMessage = "Performing tensile test...";
if (AutoConverge && !FoundMaxMotion) ProgressMessage += "\nDetermining convergence threshhold.";
//else ProgressMessage += "\nMotion at " + QString::number(MaxMoveHistory[0]*1000000, 'g', 3).toStdString() + "/" + QString::number(ConvThresh, 'g', 3).toStdString();
else ProgressMessage += "\nStep " + QString::number(count, 'g', 3).toStdString() +/*", Max Displacement " + QString::number(SS.MaxVoxDisp, 'g', 3).toStdString() + */", Convergence threshhold " + QString::number(ConvThresh, 'g', 3).toStdString();
if (count > 20000){
ProgressMessage += "\nSimulation not converging.\nConsider retrying with a larger threshold. (Currently " + QString::number(MaxMoveHistory[0]*1000, 'g', 3).toStdString() +")";
}
}
count+=MinimumPerStep;
}
if (CancelFlag) break;
EnableFeature(VXSFEAT_FAILURE, true);
// EnableFailure(true); //do one step to apply breaking and re-settle as needed...
if (!TimeStep(&IntMsg)){
ProgressMessage = "Tensile test failed. \n \n" + IntMsg;
CancelFlag = true; //get outta here!
}
}
for (int j=0; j<NumBCs; j++){
CVX_FRegion* pThisBC = pEnv->GetBC(j);
if (pThisBC->Displace.Length2() != 0 ){ //if non-zero displacement
double CurDisp = pThisBC->Displace.Length()*(i+1.0)/((double)NumStep);
double tmp2 = -GetSumForceDir(pThisBC);
out << CurDisp << "\t" << tmp2 << "\t";
if (IsBasicTensile){ //only two materials, only one with displacement, so we should only ever enter here once!!
double ThisStress = tmp2/CSArea;
double ThisStrain = CurDisp/IniLength;
out << ThisStrain*100 << "\t" << ThisStress/1e6 << "\t";
if (i!=0) out << (ThisStress-LastStress)/(ThisStrain-LastStrain)/1e6 << "\t";
else out << "" << "\t";
LastStress = ThisStress;
LastStrain = ThisStrain;
}
}
}
out << "\n";
// for (int k=0; k<VoxArray.size(); k++){
// VoxArray[k].ExternalDisp *= (i+2.0)/(i+1.0);
// }
CurTick = i+1;
}
int stop = 1;
File.close();
ProgressMessage = ""; //flag to not display message boc on return...
TestRunning = false;
emit StopExternalGLUpdate();
}
