bool
TeSTElementSet::buildImpl(TeQuerier* querier, const int& slide)
{
int dt = CLOCKS_PER_SEC/4, steps = 0;
int dt2 = CLOCKS_PER_SEC * 5;
clock_t t0, t1, t2;
t0=t1=t2=clock();
if(!querier)
return false;
if(!querier->loadInstances(slide))
return false;
//clear all structures
attrList_->clear();
instances_.clear();
objectIdToInstances_.clear();
timeToInstances_.clear();
sliceToInstances_.clear();
if(rTree_)
delete rTree_;
rTree_ = 0;
//Builts another rTree
TeBox b;
if(theme_)
b = theme_->box();
else if(layer_)
b = layer_->box();
else
b = this->box_;
rTree_ = new TeSAM::TeRTree<int>(b);
TeAttributeList l = querier->getAttrList();
setAttributeList(l);
int tot = querier->numElemInstances();
if(TeProgress::instance())
{
TeProgress::instance()->reset();
string caption = "Building data";
TeProgress::instance()->setCaption(caption.c_str());
string msg = "Building in progress. Please, wait!";
TeProgress::instance()->setMessage(msg);
TeProgress::instance()->setTotalSteps(tot);
t2 = clock();
t0 = t1 = t2;
}
TeSTInstance obj;
while(querier->fetchInstance(obj))
{
this->insertSTInstance(obj);
obj.clear();
if(TeProgress::instance())
{
steps++;
t2 = clock();
if (int(t2-t1) > dt)
{
t1 = t2;
if(TeProgress::instance()->wasCancelled())
return false;
if((int)(t2-t0) > dt2)
TeProgress::instance()->setProgress(steps);
}
}
}
if(TeProgress::instance())
TeProgress::instance()->reset();
return true;
}
