void particles::pit::myfunctions::RepresentationChange::leaveCell(
particles::pit::Cell& fineGridCell
) {
//std::cout <<"leaveCell()!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!" << MANTISSA << std::endl;
const int cellIndex = fineGridCell.getCellIndex();
const int NumberOfParticles = ParticleHeap::getInstance().getData(cellIndex).size();
//std::cout << "cellIndex in leaveCell():" << cellIndex << std::endl;
if(NumberOfParticles > 0) {
const ParticleHeap::HeapEntries& currentParticles = ParticleHeap::getInstance().getData(cellIndex);
// Compute the mean value of the velocity for each axes
tarch::la::Vector<DIMENSIONS, double> meanVelocity = computeMeanVelocity(currentParticles, NumberOfParticles);
// Compute the mean value of the coordinate for each axes
tarch::la::Vector<DIMENSIONS, double> meanCoordinate = particles::pit::myfunctions::CoordinatesRepresentationChange::computeMeanCoordinate(currentParticles, NumberOfParticles);
// Write mean velocity and coordinate in Cell
fineGridCell.setMeanVelocity(meanVelocity);
fineGridCell.setMeanCoordinate(meanCoordinate);
// Write in Heap of compressed Particles
writeInCompressedHeap(currentParticles, cellIndex, meanVelocity, meanCoordinate);
// Compute maxEror norm and save in cell.
// We do it here because I don't know how to change cells in ascend in dfor(3) loop
if(fineGridCell.isLeaf() && NumberOfParticles > 1) {
double maxError = computeMaxError( fineGridCell );
fineGridCell.setMyNorm(maxError);
}
}
}
bool ATOM_TerrainPatch::initialize (ATOM_TerrainQuadtree *quadtree, ATOM_TerrainPatch *parent, PatchPosition position, ATOM_VertexArray *baseVertices)
{
ATOM_STACK_TRACE(ATOM_TerrainPatch::initialize);
ATOM_ASSERT(quadtree);
unsigned patchSize = quadtree->getPatchSize ();
unsigned rootSize = quadtree->getRootSize ();
float scaleX = quadtree->getScaleX ();
float scaleZ = quadtree->getScaleZ ();
_mipLevel = parent ? parent->getMipLevel() + 1 : 0;
unsigned step = ((rootSize - 1) / (patchSize - 1)) >> _mipLevel;
unsigned interval = (patchSize - 1) * step;
unsigned parentOffsetX = parent ? parent->getOffsetX() : 0;
unsigned parentOffsetZ = parent ? parent->getOffsetZ() : 0;
switch (position)
{
case ATOM_TerrainPatch::LeftTop:
_offsetX = parentOffsetX;
_offsetZ = parentOffsetZ;
break;
case ATOM_TerrainPatch::RightTop:
_offsetX = parentOffsetX + interval;
_offsetZ = parentOffsetZ;
break;
case ATOM_TerrainPatch::LeftBottom:
_offsetX = parentOffsetX;
_offsetZ = parentOffsetZ + interval;
break;
case ATOM_TerrainPatch::RightBottom:
_offsetX = parentOffsetX + interval;
_offsetZ = parentOffsetZ + interval;
break;
default:
return false;
}
_position = position;
_quadtree = quadtree;
_step = step;
_parent = parent;
_maxError = computeMaxError ();
setupVertices (computeSkirtLength (), baseVertices);
_boxRadius = computeBoundingBox (_boundingBox);
return true;
}
void particles::pit::myfunctions::CoordinatesRepresentationChange::ascend(
particles::pit::Cell * const fineGridCells,
particles::pit::Vertex * const fineGridVertices,
const peano::grid::VertexEnumerator& fineGridVerticesEnumerator,
particles::pit::Vertex * const coarseGridVertices,
const peano::grid::VertexEnumerator& coarseGridVerticesEnumerator,
particles::pit::Cell& coarseGridCell
) {
dfor3(k)
particles::pit::Cell fineGridCell = fineGridCells[ fineGridVerticesEnumerator.cell(k) ];
const tarch::la::Vector<DIMENSIONS,double> cellOffset = fineGridVerticesEnumerator.getVertexPosition(k);
const tarch::la::Vector<DIMENSIONS,double> MeanCoordinate = fineGridCell.getMeanCoordinate();
bool isLeaf = fineGridCell.isLeaf();
const int cellIndex = fineGridCell.getCellIndex();
const int NumberOfParticles = ParticleHeap::getInstance().getData(cellIndex).size();
if( isLeaf && NumberOfParticles>1 ) {
// Compute Max-Norm
double maxRelativeError = computeMaxRelativeError( fineGridCell );
// Save maximal maxRelativeError in _globalMaxRelativeError
if (_globalMaxRelativeError < maxRelativeError) {
_globalMaxRelativeError = maxRelativeError;
}
double maxError = computeMaxError( fineGridCell );
if(_global_max_error < maxError) {
_global_max_error = maxError;
}
double maxOffset = computeMaxOffset( fineGridCell );
// Compute RMSD
tarch::la::Vector<DIMENSIONS,double> rmsd = computeRMSD( fineGridCell );
// Computer L2-Norm
tarch::la::Vector<DIMENSIONS,double> l2ErrorNorm = computeL2ErrorNorm( fineGridCell );
tarch::la::Vector<DIMENSIONS,double> l2Norm = computeL2Norm( fineGridCell );
// Save maximal l2ErrorNorm in _globalMaxL2ErrorNorm
for(int d = 0; d<DIMENSIONS; d++) {
if(_globalMaxL2ErrorNorm < l2ErrorNorm[d]) {
_globalMaxL2ErrorNorm = l2ErrorNorm[d];
}
}
// Add l2Norm to _globalL2Norm
_globalL2ErrorNorm += l2ErrorNorm;
// Don't forget to increment _globalNormAdditions to divide _globalL2Norm by it
// at the end of iteration before writing it in the file!
++_globalNormAdditions;
//std::cout << "_globalNormAdditions: " << _globalNormAdditions << std::endl;
// Output for checking
//printParticlesInfo( fineGridCell, "maxError", maxError );
_maxRelativeErrorOut << maxRelativeError << " ";
_maxErrorOut << maxError << " ";
_maxOffsetOut << maxOffset << " ";
// Histogram process
l2_error_norm_histogram_->processHistogram(l2ErrorNorm);
max_error_norm_histogram_->processHistogram(maxError);
max_offset_norm_histogram_->processHistogram(maxOffset);
for(int d=0; d<DIMENSIONS; d++) {
_RMSDOut << rmsd[d] << " ";
_L2ErrorNormOut << l2ErrorNorm[d] << " ";
_L2NormOut << l2Norm[d] << " ";
_MeanCoordinateOut << MeanCoordinate[d] << " ";
}
for(int d=0; d<DIMENSIONS; d++) {
_maxRelativeErrorOut << cellOffset[d] << " ";
_maxErrorOut << cellOffset[d] << " ";
_maxOffsetOut << cellOffset[d] << " ";
_RMSDOut << cellOffset[d] << " ";
_L2ErrorNormOut << cellOffset[d] << " ";
_L2NormOut << cellOffset[d] << " ";
_MeanCoordinateOut << cellOffset[d] << " ";
}
_maxRelativeErrorOut << std::endl;
_maxErrorOut << std::endl;
_maxOffsetOut << std::endl;
_RMSDOut << std::endl;
_L2ErrorNormOut << std::endl;
_L2NormOut << std::endl;
_MeanCoordinateOut << std::endl;
}
enddforx
}
void particles::pit::myfunctions::RepresentationChange::ascend(
particles::pit::Cell * const fineGridCells,
particles::pit::Vertex * const fineGridVertices,
const peano::grid::VertexEnumerator& fineGridVerticesEnumerator,
particles::pit::Vertex * const coarseGridVertices,
const peano::grid::VertexEnumerator& coarseGridVerticesEnumerator,
particles::pit::Cell& coarseGridCell
) {
particles::pit::myfunctions::CoordinatesRepresentationChange::ascend(
fineGridCells,
fineGridVertices,
fineGridVerticesEnumerator,
coarseGridVertices,
coarseGridVerticesEnumerator,
coarseGridCell);
dfor3(k)
particles::pit::Cell fineGridCell = fineGridCells[ fineGridVerticesEnumerator.cell(k) ];
const tarch::la::Vector<DIMENSIONS,double> cellOffset = fineGridVerticesEnumerator.getVertexPosition(k);
const tarch::la::Vector<DIMENSIONS,double> meanVelocity = fineGridCell.getMeanVelocity();
bool isLeaf = fineGridCell.isLeaf();
const int cellIndex = fineGridCell.getCellIndex();
const int NumberOfParticles = ParticleHeap::getInstance().getData(cellIndex).size();
if( isLeaf && NumberOfParticles>1 ) {
// Compute Max-Norm
double maxRelativeError = computeMaxRelativeError( fineGridCell );
// Save maximal maxRelativeError in _globalMaxRelativeError
if (_globalMaxRelativeError < maxRelativeError) {
_globalMaxRelativeError = maxRelativeError;
}
double maxError = computeMaxError( fineGridCell );
if(_global_max_error < maxError) {
_global_max_error = maxError;
}
double maxOffset = computeMaxOffset( fineGridCell );
double minOffset = computeMinOffset( fineGridCell );
if(_globalMaxOffset < maxOffset) {
_globalMaxOffset = maxOffset;
}
// Compute RMSD
tarch::la::Vector<DIMENSIONS,double> rmsd = computeRMSD( fineGridCell );
// Computer L2-Norm
tarch::la::Vector<DIMENSIONS,double>
l2ErrorNorm = computeL2ErrorNorm( fineGridCell );
tarch::la::Vector<DIMENSIONS,double>
l2Norm = computeL2Norm( fineGridCell );
//std::cout << "ascend() l2ErrorNorm: " << l2ErrorNorm << std::endl;
// Save maximal l2ErrorNorm in _globalMaxL2ErrorNorm
for(int d = 0; d<DIMENSIONS; d++) {
if(_globalMaxL2ErrorNorm < l2ErrorNorm[d]) {
_globalMaxL2ErrorNorm = l2ErrorNorm[d];
}
}
// Add l2ErrorNorm to _globalL2ErrorNorm
_globalL2ErrorNorm += l2ErrorNorm;
// Add l2Norm to _globalL2OffsetNorm
_globalL2OffsetNorm += l2Norm;
// Don't forget to increment _globalNormAdditions to divide _globalL2Norm
//by it at the end of iteration before writing it in the file!
++_globalNormAdditions;
// Output for checking
if(VERBOSE) {
printParticlesInfo( fineGridCell, "l2ErrorNorm", l2ErrorNorm );
}
/* All computations put in output */
_maxRelativeErrorOut << maxRelativeError << " ";
_maxErrorOut << maxError << " ";
_maxOffsetOut << maxOffset << " ";
_minOffsetOut << minOffset << " ";
// Histogram process
l2_error_norm_histogram_->processHistogram(l2ErrorNorm);
max_error_norm_histogram_->processHistogram(maxError);
max_offset_norm_histogram_->processHistogram(maxOffset);
for(int d=0; d<DIMENSIONS; d++) {
_RMSDOut << rmsd[d] << " ";
_L2ErrorNormOut << l2ErrorNorm[d] << " ";
_L2NormOut << l2Norm[d] << " ";
_meanVelocityOut << meanVelocity[d] << " ";
}
/* Write coordinates of each cell near the value of the Norm(offset) */
for(int d=0; d<DIMENSIONS; d++) {
_maxRelativeErrorOut << cellOffset[d] << " ";
_maxErrorOut << cellOffset[d] << " ";
_maxOffsetOut << cellOffset[d] << " ";
_minOffsetOut << cellOffset[d] << " ";
_RMSDOut << cellOffset[d] << " ";
_L2ErrorNormOut << cellOffset[d] << " ";
_L2NormOut << cellOffset[d] << " ";
_meanVelocityOut << cellOffset[d] << " ";
}
/* Put the new line character to have one cell per line */
_maxRelativeErrorOut << std::endl;
_maxErrorOut << std::endl;
_maxOffsetOut << std::endl;
_minOffsetOut << std::endl;
_RMSDOut << std::endl;
_L2ErrorNormOut << std::endl;
_L2NormOut << std::endl;
_meanVelocityOut << std::endl;
}
enddforx
}
QPointF *fitCubic(QPolygonF &points,int first,int last,FitVector tHat1,FitVector tHat2,float error,int &width)
{
double *u;
double *uPrime;
double maxError;
int splitPoint;
int nPts;
double iterationError;
int maxIterations=4;
FitVector tHatCenter;
QPointF *curve;
int i;
width=0;
iterationError=error*error;
nPts = last-first+1;
if (nPts == 2) {
double dist = distance(points[last], points[first]) / 3.0;
curve = new QPointF[4];
curve[0] = points[first];
curve[3] = points[last];
tHat1.scale(dist);
tHat2.scale(dist);
curve[1] = tHat1 + curve[0];
curve[2] = tHat2 + curve[3];
width=4;
return curve;
}
/* Parameterize points, and attempt to fit curve */
u = chordLengthParameterize(points, first, last);
curve = generateBezier(points, first, last, u, tHat1, tHat2);
/* Find max deviation of points to fitted curve */
maxError = computeMaxError(points, first, last, curve, u, &splitPoint);
if (maxError < error) {
delete[] u;
width=4;
return curve;
}
/* If error not too large, try some reparameterization */
/* and iteration */
if (maxError < iterationError) {
for (i = 0; i < maxIterations; i++) {
uPrime = reparameterize(points, first, last, u, curve);
curve = generateBezier(points, first, last, uPrime, tHat1, tHat2);
maxError = computeMaxError(points, first, last, curve, uPrime, &splitPoint);
if (maxError < error) {
delete[] u;
width=4;
return curve;
}
delete[] u;
u = uPrime;
}
}
/* Fitting failed -- split at max error point and fit recursively */
delete[] u;
delete[] curve;
tHatCenter = computeCenterTangent(points, splitPoint);
int w1,w2;
QPointF *cu1=NULL, *cu2=NULL;
cu1 = fitCubic(points, first, splitPoint, tHat1, tHatCenter, error,w1);
tHatCenter.negate();
cu2 = fitCubic(points, splitPoint, last, tHatCenter, tHat2, error,w2);
QPointF *newcurve = new QPointF[w1+w2];
for (int i=0;i<w1;i++)
newcurve[i]=cu1[i];
for (int i=0;i<w2;i++)
newcurve[i+w1]=cu2[i];
delete[] cu1;
delete[] cu2;
width=w1+w2;
return newcurve;
}
