void Eraser::doErase(bool mergeable)
{
TileLayer *tileLayer = currentTileLayer();
const QPoint tilePos = tilePosition();
if (!tileLayer->bounds().contains(tilePos))
return;
QRegion eraseRegion(tilePos.x(), tilePos.y(), 1, 1);
EraseTiles *erase = new EraseTiles(mapDocument(), tileLayer, eraseRegion);
erase->setMergeable(mergeable);
mapDocument()->undoStack()->push(erase);
mapDocument()->emitRegionEdited(eraseRegion, tileLayer);
}
void Eraser::doErase(bool continuation)
{
TileLayer *tileLayer = currentTileLayer();
const QPoint tilePos = tilePosition();
QRegion eraseRegion(tilePos.x(), tilePos.y(), 1, 1);
if (continuation) {
for (const QPoint &p : pointsOnLine(mLastTilePos, tilePos))
eraseRegion |= QRegion(p.x(), p.y(), 1, 1);
}
mLastTilePos = tilePosition();
if (!tileLayer->bounds().intersects(eraseRegion.boundingRect()))
return;
EraseTiles *erase = new EraseTiles(mapDocument(), tileLayer, eraseRegion);
erase->setMergeable(continuation);
mapDocument()->undoStack()->push(erase);
mapDocument()->emitRegionEdited(eraseRegion, tileLayer);
}