/// <summary>
/// Checks required resize scaling for upcoming letters basing on the capital letter.
/// </summary>
/// <param name="capital">Capital letter to be checked.</param>
/// <returns>Scaling ratio for all upcoming letters</returns>
private float ResizeScale(ImageMatrix capital)
{
var files = DBHandle.FileRetriever.Size_All_Type_All(DATA.varyingSizeFolderNode, DATA.capitalsFolderNode);
float heightWidthRatio = (float)capital.Height / capital.Width;
float toRet = 0;
float bestAlikeRatio = 0;
foreach (var fileD in files)
{
foreach (var file in fileD.Value)
{
var matrixInfo = GetMatrixInfo(file);
var matrixHWRatio = matrixInfo.Item1;
if (InRangeFrom(matrixHWRatio, heightWidthRatio, 0.1f))
{
var alikeRatio = MatrixTools.EqualPixelRatioScaleBased(new ImageMatrix(file), capital);
if (alikeRatio > bestAlikeRatio)
{
bestAlikeRatio = alikeRatio;
toRet = matrixInfo.Item2 / capital.Height;
}
}
}
}
return(toRet);
}
public void TestScaledComparison()
{
testName = "ScaledComparison";
Random r = new Random();
int smallW = 5, smallH = 7;
bool[][] smallMatrix = new bool[smallW][];
for (int x = 0; x < smallW; ++x)
{
smallMatrix[x] = new bool[smallH];
for (int y = 0; y < smallH; ++y)
{
smallMatrix[x][y] = r.Next(2) == 1 ? true : false;
}
}
ImageMatrix main = new ImageMatrix(smallMatrix);
ImageMatrix second = MatrixTools.Scale(main, 8, 16);
var r1 = MatrixTools.EqualPixelRatioScaleBased(main, second);
TEST(r1 >= 0.99 && r1 <= 1.0, $"Comparison varying sizes is below 0.99, received ratio: {r1}");
}
