public BitmapTransformationChain Transform(Bitmap original, Size size)
{
var chain = new BitmapTransformationChain(original, logException);
chain.TransformCopying(_ => resize(_, size));
chain.TransformInplace(removeCorners);
return(chain);
}
public BitmapTransformationChain TransformArt(Bitmap original, Size size)
{
var chain = new BitmapTransformationChain(original, logException);
if (!original.Size.FitsIn(size))
{
chain.TransformCopying(_ => resize(_, size));
}
return(chain);
}
public BitmapTransformationChain TransformForgeImage(Bitmap original, Size size)
{
var frameDetector = new BmpFrameDetector(original, SizeCropped);
frameDetector.Execute();
var frame = frameDetector.Frame;
var chain = new BitmapTransformationChain(original, logException);
chain.TransformCopying(_ => resize(_, size, frame));
return(chain);
}
public static Bitmap HalfResizeDpi(this Bitmap original, bool preventMoire = false)
{
var originalSize = original.Size;
var reducedSize = originalSize.HalfByDpi();
if (originalSize == reducedSize)
{
return(original);
}
int stepsCount;
if (preventMoire)
{
var originalToReducedRatio = originalSize.DivideBy(reducedSize);
float maxRatio = originalToReducedRatio.Max();
stepsCount = (int)Math.Round((maxRatio - 1) * 3f);
}
else
{
stepsCount = 1;
}
SizeF delta = originalSize.Minus(reducedSize).DivideBy(
reducedSize.MultiplyBy(stepsCount));
using (var chain = new BitmapTransformationChain(original, reThrow))
{
for (int k = stepsCount - 1; k >= 0; k--)
{
Size currentSize = reducedSize.MultiplyBy(delta.MultiplyBy(k).Plus(1f)).Round();
chain.TransformCopying(bmp => bmp.FitIn(currentSize));
}
return(chain.Result);
}
}