/**
* If the local simulation is at the edge of global simulation, we also need to include the extra
* cells to the master (because of hardwall boundaries).
*/
private Cell[][] getFinalCells(Grid grid) {
IntBox mypart = partitions[workerID];
int xstart = 0;
int ystart = 0;
int xend = mypart.xsize() - 1;
int yend = mypart.ysize() - 1;
if (mypart.xmin() == 0) {
xstart -= Grid.EXTRA_CELLS_BEFORE_GRID;
}
if (mypart.xmax() == globalSettings.getGridCellsX() - 1) {
xend += Grid.EXTRA_CELLS_AFTER_GRID;
}
if (mypart.ymin() == 0) {
ystart -= Grid.EXTRA_CELLS_BEFORE_GRID;
}
if (mypart.ymax() == globalSettings.getGridCellsY() - 1) {
yend += Grid.EXTRA_CELLS_AFTER_GRID;
}
Cell[][] finalCells = new Cell[xend - xstart + 1][yend - ystart + 1];
for (int x = xstart; x <= xend; ++x) {
for (int y = ystart; y <= yend; ++y) {
finalCells[x - xstart][y - ystart] = grid.getCell(x, y);
}
}
return finalCells;
}
private SharedDataManager createSharedDataManager() {
IntBox simulationAreaInCellDimensions =
new IntBox(0, globalSettings.getGridCellsX() - 1, 0, globalSettings.getGridCellsY() - 1);
return new SharedDataManager(
workerID,
partitions,
simulationAreaInCellDimensions,
localSettings.getBoundaryType(),
communicator.getRegistry());
}
/** Translates the local border cell index to remote ghost cell index. */
private Point getRemoteGhostCellIndex(int x, int y, Point direction) {
int xoffset = direction.x * settings.getGridCellsX();
int yoffset = direction.y * settings.getGridCellsY();
return new Point(x - xoffset, y - yoffset);
}