virtual bool packInto(int pwidth, int pheight, int border)
{
if (border)
for (size_t i = 0; i < rects_.size(); ++i)
{
rects_[i].width += border * 2;
rects_[i].height += border * 2;
}
packHelper2(pwidth, pheight);
if (result_.size() != rects_.size()) return false;
if (border)
for (size_t i = 0; i < result_.size(); ++i)
{
result_[i].width -= 2 * border;
result_[i].height -= 2 * border;
result_[i].x += border;
result_[i].y += border;
}
return true;
}
virtual void packTextures(int* pwidth, int* pheight, int border, bool forceSquare)
{
for (size_t i = 0; i < rects_.size(); ++i)
{
rects_[i].width += border * 2;
rects_[i].height += border * 2;
}
int maxWidth = 0;
int maxHeight = 0;
int totalArea = 0;
for (size_t i = 0; i < rects_.size(); ++i)
{
int width = rects_[i].width;
int height = rects_[i].height;
maxWidth = std::max(maxWidth, width);
maxHeight = std::max(maxHeight, height);
totalArea += width * height;
}
int max = 11; // 2^11 = 2048
for (int i = 0; i < max * 2 + 1; ++i)
{
int jmax = max - abs(max - i) + 1;
int jstart = (i < max) ? 0 : (i - max);
for (int j = 0; j < jmax; ++j)
{
int x = (jmax / 2) + offset(j) + jstart; // j + jstart
int y = i - x;
if (forceSquare && (x != y))
continue;
int width = 1 << x;
int height = 1 << y;
int area = width * height;
if (width < maxWidth || height < maxHeight || area < totalArea)
continue;
packHelper2(width, height);
if (result_.size() == rects_.size())
{
*pwidth = width;
*pheight = height;
for (size_t i = 0; i < result_.size(); ++i)
{
result_[i].width -= 2 * border;
result_[i].height -= 2 * border;
result_[i].x += border;
result_[i].y += border;
}
return;
}
}
}
}