Cell WangFiller::findFittingCell(const TileLayer &back,
const TileLayer &front,
const QRegion &fillRegion,
QPoint point) const
{
Q_ASSERT(mWangSet);
QList<WangTile> wangTilesList = mWangSet->findMatchingWangTiles(wangIdFromSurroundings(back,
front,
fillRegion,
point));
RandomPicker<WangTile> wangTiles;
for (const WangTile &wangTile : wangTilesList)
wangTiles.add(wangTile, mWangSet->wangTileProbability(wangTile));
WangTile wangTile;
if (!mWangSet->isComplete()) {
// goes through all adjacent, empty tiles and sees if the current wangTile
// allows them to have at least one fill option.
while (!wangTiles.isEmpty()) {
wangTile = wangTiles.take();
bool continueFlag = false;
QPoint adjacentPoints[8];
getSurroundingPoints(point, mStaggeredRenderer, mStaggerAxis, adjacentPoints);
// now goes through and checks adjacents, continuing if any can't be filled
for (int i = 0; i < 8; ++i) {
QPoint adjacentPoint = adjacentPoints[i];
// check if the point is empty, otherwise, continue.
if (!getCell(back, front, fillRegion, adjacentPoint).isEmpty())
continue;
WangId adjacentWangId = wangIdFromSurroundings(back,
front,
fillRegion,
adjacentPoint);
WangId wangId = wangTile.wangId();
adjacentWangId.updateToAdjacent(wangId, (i + 4) % 8);
if (!mWangSet->wildWangIdIsUsed(adjacentWangId)) {
continueFlag = true;
break;
}
}
if (!continueFlag)
break;
}
} else if (!wangTiles.isEmpty()) {
wangTile = wangTiles.pick();
}
return wangTile.makeCell();
}
const TileStampVariation &TileStamp::randomVariation() const
{
Q_ASSERT(!d->variations.isEmpty());
RandomPicker<const TileStampVariation *> randomPicker;
for (const TileStampVariation &variation : qAsConst(d->variations))
randomPicker.add(&variation, variation.probability);
return *randomPicker.pick();
}
Map *TileStamp::randomVariation() const
{
if (d->variations.isEmpty())
return 0;
RandomPicker<const TileStampVariation *> randomPicker;
for (const TileStampVariation &variation : d->variations)
randomPicker.add(&variation, variation.probability);
return randomPicker.pick()->map;
}
