public async Task <List <Mat> > GenerateTiles(Quilter quilter, int size, float overlapQuotient, int nIter)
{
int qSize = (int)(Math.Sqrt(2) * size);
if (qSize % 2 == 0)
{
qSize++;
}
int overlap = (int)(qSize / (2 - overlapQuotient) * overlapQuotient);
if (overlap % 2 == 0)
{
overlap++;
}
int bs = (qSize + overlap) / 2;
int sSize = bs + overlap / 2;
quilter.BlockSize = bs;
quilter.Overlap = overlap;
quilter.WangMode = true;
//DEBUG
quilter.RngSeed(42);
float minCutErr = float.MaxValue;
List <Mat> bestTiles = null;
for (int k = 0; k < nIter; k++)
{
float cutErr = 0;
List <Mat> currTiles = new List <Mat>();
List <Mat> vert = new List <Mat>(), horiz = new List <Mat>();
for (int i = 0; i < vertColors; i++)
{
vert.Add(quilter.GetRandomBlock(sSize));
}
for (int i = 0; i < horizColors; i++)
{
horiz.Add(quilter.GetRandomBlock(sSize));
}
for (int i = 0; i < tiles.Count; i++)
{
var tile = tiles[i];
quilter.Start(2, 2);
Mat l = new Mat(horiz[tile.L], new CvRect(overlap / 2, overlap / 2, bs, bs));
Mat t = new Mat(vert[tile.T], new CvRect(0, overlap / 2, bs, bs));
Mat b = new Mat(vert[tile.B], new CvRect(overlap / 2, 0, bs, bs));
Mat r = new Mat(horiz[tile.R], new CvRect(0, 0, bs, bs));
quilter.Step(l); l.Dispose();
quilter.Step(t); t.Dispose();
quilter.Step(b); b.Dispose();
quilter.Step(r); r.Dispose();
cutErr += quilter.CutError;
currTiles.Add(quilter.Quilt);
if (cutErr >= minCutErr)
{
break;
}
//if (float.IsInfinity(cutErr) || cutErr > 5000)
//{
//}
}
if (cutErr < minCutErr)
{
minCutErr = cutErr;
if (bestTiles != null)
{
foreach (var m in bestTiles)
{
m.Dispose();
}
}
bestTiles = currTiles;
}
else
{
foreach (var m in currTiles)
{
m.Dispose();
}
}
if (k % 100 == 0)
{
System.Diagnostics.Debug.WriteLine($"{minCutErr} {cutErr}");
}
foreach (var m in vert)
{
m.Dispose();
}
foreach (var m in horiz)
{
m.Dispose();
}
await Task.Delay(1);
}
List <Mat> turned = new List <Mat>();
//Remapping
float[,] mapx = new float[size, size];
float[,] mapy = new float[size, size];
//float dxy = (0.5f * qSize - 0.5f * overlap) / size; //TODO: why not size + 1?
//float x0 = 0.5f * qSize;
//float y0 = 0.5f * overlap;
float dxy = (0.5f * qSize - 0.5f) / size; //TODO: why not size + 1?
float x0 = 0.5f * qSize;
float y0 = 0.5f;
for (int i = 0; i < size; i++)
{
for (int j = 0; j < size; j++)
{
mapx[i, j] = x0 + j * dxy;
mapy[i, j] = y0 + j * dxy;
}
x0 -= dxy;
y0 += dxy;
}
Mat mMapx = new Mat(size, size, MatType.CV_32FC1, mapx);
Mat mMapy = new Mat(size, size, MatType.CV_32FC1, mapy);
foreach (var m in bestTiles)
{
Mat tm = new Mat(size, size, MatType.CV_32FC3);
Cv2.Remap(m, tm, mMapx, mMapy, OpenCvSharp.Interpolation.Cubic, OpenCvSharp.BorderType.Wrap);
turned.Add(tm);
m.Dispose();
}
mMapx.Dispose();
mMapy.Dispose();
return(turned);
}
async void Quilt()
{
//for (;;)
//{
// Mat b1 = new Mat(16, 16, MatType.CV_32FC3, new Scalar(1, 1, 1));
// Mat b2 = new Mat(16, 16, MatType.CV_32FC3, new Scalar(1, 1, 1));
// Mat b = new Mat(16, 16, MatType.CV_32FC3, new Scalar(1, 1, 1));
// Cv2.Subtract(b1, b2, b);
// b1.Dispose();
// b2.Dispose();
// b.Dispose();
// //GC.Collect();
//}
//int size = 64;
//int qSize = (int)Math.Round(Math.Sqrt(2) * size);
//Mat m = new Mat(qSize, qSize, MatType.CV_32FC3, new Scalar(255,0,0));
//Cv2.FillPoly(m, new[] { new[] { new CvPoint(0.5f * qSize, 0), new CvPoint(qSize, 0.5f * qSize), new CvPoint(0.5f * qSize, qSize), new CvPoint(0, 0.5f * qSize) } }, new Scalar(0, 0, 255));
//Mat trans = Cv2.GetRotationMatrix2D(new Point2f(0.5f * qSize, 0.5f * qSize), -45, 1);
//trans.Set<double>(0, 2, trans.At<double>(0, 2) - 0.5 * (qSize - size));
//trans.Set<double>(1, 2, trans.At<double>(1, 2) - 0.5 * (qSize - size));
//Mat tm = new Mat();
//Cv2.WarpAffine(m, tm, trans, new CvSize(size, size), OpenCvSharp.Interpolation.Linear);
//Cv2.ImShow("Test", tm);
//DEBUG
//int size = 64;
//int qSize = (int)Math.Round(Math.Sqrt(2) * size);
//Mat m = new Mat(qSize, qSize, MatType.CV_32FC3, new Scalar(255,0,0));
//Cv2.FillPoly(m, new[] { new[] { new CvPoint(0.5f * qSize, 10), new CvPoint(qSize - 10, 0.5f * qSize), new CvPoint(0.5f * qSize, qSize - 10), new CvPoint(10, 0.5f * qSize) } }, new Scalar(0, 0, 255));
//float[,] mapx = new float[size, size];
//float[,] mapy = new float[size, size];
//float dxy = (0.5f * qSize - 0.5f) / (size + 1);
//float x0 = 0.5f * (qSize - 1);
//float y0 = 0;
//for (int i = 0; i < size; i++)
//{
// for (int j = 0; j < size; j++)
// {
// mapx[i, j] = x0 + j * dxy;
// mapy[i, j] = y0 + j * dxy;
// }
// x0 -= dxy;
// y0 += dxy;
//}
//Mat mMapx = new Mat(size, size, MatType.CV_32FC1, mapx);
//Mat mMapy = new Mat(size, size, MatType.CV_32FC1, mapy);
//Mat tm = new Mat(size, size, MatType.CV_32FC3);
//Cv2.Remap(m, tm, mMapx, mMapy, OpenCvSharp.Interpolation.Cubic, OpenCvSharp.BorderType.Wrap);
//Cv2.ImShow("Src", m);
//Cv2.ImShow("Dst", tm);
//return;
//DEBUG
var wangTiler = new WangTiler(3, 3, 31337);
var q = new Quilter();
q.Sources = sources;
//System.Threading.Thread th = new System.Threading.Thread(new System.Threading.ThreadStart(() =>
//{
List <Mat> tiles = await wangTiler.GenerateTiles(q, BlockSize, 1f / 6, 1000);
//}
//));
//th.Start();
Mat result = wangTiler.FitTiles(16, 16, BlockSize, tiles);
//Cv2.ImShow("Test", result);
Mat quilted8U = new Mat();
result.ConvertTo(quilted8U, MatType.CV_8UC3, 255.0);
WriteableBitmap quiltedBmp = quilted8U.ToWriteableBitmap();
Result = quiltedBmp;
return;
//foreach (var src in sources)
//{
// if (BlockSize > src.Cols || BlockSize > src.Rows)
// {
// MessageBox.Show("Block Size exceeds one of the source's size, please reduce Block Size or reload the sources.", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
// return;
// }
//}
//Quilter q = new Quilter();
////q.MatchTolerance = 100;
//q.BlockSize = BlockSize;
//q.Overlap = BlockSize / 6;
//q.Sources = sources;
//int step = q.BlockSize - q.Overlap;
//int qw = (Width - q.Overlap - 1) / step + 1;
//int qh = (Height - q.Overlap - 1) / step + 1;
//q.Start(qw, qh);
//for (;;)
//{
// bool more = q.Step();
// Mat quilted8U = new Mat();
// q.Quilt.ConvertTo(quilted8U, MatType.CV_8UC3, 255.0);
// WriteableBitmap quiltedBmp = quilted8U.ToWriteableBitmap();
// Result = quiltedBmp;
// quilted8U.Dispose();
// await Task.Delay(1);
// if (!more) break;
//}
//System.Diagnostics.Debug.WriteLine(q.CutError);
}
