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#include "designer.h"
#include <dirent.h>
#include <sstream>
#include <iostream>
designer::designer(
std::string imagesDir) :
colDist_ {0, 1, 100, 30, 5, 1, 1}
{
DIR* imgdir;
struct dirent* ent;
if ((imgdir = opendir(imagesDir.c_str())) == nullptr)
{
throw std::invalid_argument("Couldn't find images");
}
int maxStripLen = 0;
std::map<int, int> stripLength;
while ((ent = readdir(imgdir)) != nullptr)
{
std::string dname(ent->d_name);
std::stringstream nameParse;
int stripNum;
int panelNum;
char sep;
std::string ext;
nameParse << dname;
if (nameParse >> stripNum &&
nameParse >> sep &&
nameParse >> panelNum &&
nameParse >> ext &&
ext == ".png")
{
if (!stripLength.count(stripNum) || stripLength[stripNum] < panelNum)
{
stripLength[stripNum] = panelNum;
}
if (panelNum > maxStripLen)
{
maxStripLen = panelNum;
}
comics_[stripNum][panelNum] = imagesDir + "/" + dname;
}
}
closedir(imgdir);
std::vector<int> lenHist(maxStripLen, 0);
for (const auto& mapping : stripLength)
{
lenHist[mapping.second]++;
}
lenDist_ =
std::discrete_distribution<int>(
std::begin(lenHist),
std::end(lenHist));
}
Magick::Image designer::generate(std::mt19937& rng) const
{
int numPanels = lenDist_(rng);
std::vector<Magick::Image> panels;
int numCols = std::min(colDist_(rng), numPanels);
int curCol = 0;
int numRows = 0;
int curRowWidth = 0;
int maxRowWidth = 0;
std::map<int, int> rowHeight;
int curRowHeight = 0;
for (int i = 0; i < numPanels; i++)
{
if (curCol == 0)
{
numRows++;
}
std::uniform_int_distribution<int> stripPick(1, comics_.size());
int stripNum = stripPick(rng);
const auto& strip = comics_.at(stripNum);
size_t low = i / static_cast<double>(numPanels) * strip.size();
size_t high = (i+1) / static_cast<double>(numPanels) * strip.size();
std::uniform_int_distribution<int> panelPick(
low,
std::min(high, strip.size() - 1));
int panelNum = panelPick(rng) + 1;
const std::string& panel = strip.at(panelNum);
std::cout << panel << std::endl;
Magick::Image curfile(panel);
curfile.borderColor("black");
curfile.backgroundColor("black");
if (std::bernoulli_distribution(1.0 / 50.0)(rng))
{
std::normal_distribution<double> rotDist(0.0, 20.0);
double rotAmt = rotDist(rng);
curfile.rotate(rotAmt);
}
if (std::bernoulli_distribution(1.0 / 2.0)(rng))
{
std::geometric_distribution<unsigned int> borderDist(1.0 / 8.0);
curfile.border(
Magick::Geometry{
borderDist(rng),
borderDist(rng)});
}
curRowWidth += curfile.columns();
if (curfile.rows() > curRowHeight)
{
curRowHeight = curfile.rows();
}
panels.emplace_back(std::move(curfile));
curCol++;
if (curCol >= numCols || (i == numPanels - 1))
{
if (curRowWidth > maxRowWidth)
{
maxRowWidth = curRowWidth;
}
rowHeight[numRows - 1] = curRowHeight;
curCol = 0;
curRowWidth = 0;
curRowHeight = 0;
}
}
int fileHeight = 0;
for (const auto& mapping : rowHeight)
{
fileHeight += mapping.second;
}
Magick::Image result{
Magick::Geometry(maxRowWidth, fileHeight),
"black"};
int curx = 0;
int cury = 0;
int thisCol = 0;
int thisRow = 0;
for (const Magick::Image& panel : panels)
{
if (thisCol == numCols)
{
thisCol = 0;
cury += rowHeight.at(thisRow);
thisRow++;
curx = 0;
}
result.composite(panel, curx, cury);
curx += panel.columns();
thisCol++;
}
return result;
}
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