void multi_img::setBand(unsigned int band, const Band &data,
const Mask &mask)
{
assert(band < size());
assert(data.rows == height && data.cols == width);
Band &b = bands[band];
BandConstIt bit = b.begin();
MaskConstIt dit = dirty.begin();
/* we use opencv to copy the band data. afterwards, we update the pixels
cache. we do this only for pixels, which are not dirty yet (and would
need a complete rebuild anyways. As we instantly fix the other pixels,
those do not get marked as dirty by us. */
if (!mask.empty()) {
assert(mask.rows == height && mask.cols == width);
MaskConstIt mit = mask.begin();
data.copyTo(b, mask);
for (int i = 0; bit != b.end(); ++bit, ++dit, ++mit, ++i)
if ((*mit > 0)&&(*dit == 0))
pixels[i][band] = *bit;
} else {
data.copyTo(b);
for (int i = 0; bit != b.end(); ++bit, ++dit, ++i) {
if ((*dit == 0))
pixels[i][band] = *bit;
}
}
}
void move(const FUNC& func) const
{
static_assert(std::is_convertible<FUNC, std::function<void(const State&)>>::value, "func must be callable with a 'const State&' parameter.");
const Mask mask = toMask();
for(int i = 0; i < kBlocks; ++i)
{
Block b = blocks_[i];
if(b.top > 0 && mask.empty(b.top - 1, b.left) && mask.empty(b.top - 1, b.right()))
{
State next = *this;
next.step++;
next.blocks_[i].top--;
func(next);
}
if(b.bottom() < kRows - 1 && mask.empty(b.bottom() + 1, b.left) && mask.empty(b.bottom() + 1, b.right()))
{
State next = *this;
next.step++;
next.blocks_[i].top++;
func(next);
}
if(b.left > 0 && mask.empty(b.top, b.left - 1) && mask.empty(b.bottom(), b.left - 1))
{
State next = *this;
next.step++;
next.blocks_[i].left--;
func(next);
}
if(b.right() < kColumns - 1 && mask.empty(b.top, b.right() + 1) && mask.empty(b.bottom(), b.right() + 1))
{
State next = *this;
next.step++;
next.blocks_[i].left++;
func(next);
}
}
}
