public static void ResizeImageAdvanced(string path, int scaleValue, Upscale.ScaleMode scaleMode, Upscale.Filter filter, bool onlyDownscale, bool raw = true)
{
Image img = Image.Load(path);
ResizeImageAdvanced(img, path, scaleValue, scaleMode, filter, onlyDownscale, raw);
}
public static void ResizeImageAdvanced(Image img, string outpath, int scaleValue, Upscale.ScaleMode scaleMode, Upscale.Filter filter, bool onlyDownscale, bool raw = true)
{
PngEncoder enc = new PngEncoder();
enc.CompressionLevel = PngCompressionLevel.DefaultCompression;
if (raw)
{
enc.CompressionLevel = PngCompressionLevel.NoCompression;
}
IResampler resampler;
resampler = KnownResamplers.MitchellNetravali;
if (filter == Upscale.Filter.Bicubic)
{
resampler = KnownResamplers.Bicubic;
}
if (filter == Upscale.Filter.NearestNeighbor)
{
resampler = KnownResamplers.NearestNeighbor;
}
bool heightLonger = img.Height > img.Width;
bool widthLonger = img.Width > img.Height;
bool square = (img.Height == img.Width);
if (scaleMode == Upscale.ScaleMode.Percent)
{
Logger.Log("[ImgSharp] Scaling to " + scaleValue + "% with filter " + filter + "...");
img.Mutate(x => x.Resize((img.Width * scaleValue / 100f).RoundToInt(), (img.Height * scaleValue / 100f).RoundToInt(), resampler));
img.Save(outpath, enc);
return;
}
// Scale HEIGHT in the following cases:
bool useSquare = square && scaleMode != Upscale.ScaleMode.Percent;
bool useHeight = scaleMode == Upscale.ScaleMode.PixelsHeight;
bool useLongerOnH = (scaleMode == Upscale.ScaleMode.PixelsLongerSide && heightLonger);
bool useShorterOnW = (scaleMode == Upscale.ScaleMode.PixelsShorterSide && widthLonger);
if (useSquare || useHeight || useLongerOnH || useShorterOnW)
{
if (onlyDownscale && (img.Height <= scaleValue))
{
return; // don't scale
}
Logger.Log("[ImgSharp] Scaling to " + scaleValue + "px height with filter " + filter + "...");
float wFactor = (float)scaleValue / img.Height;
img.Mutate(x => x.Resize((img.Width * wFactor).RoundToInt(), scaleValue, resampler));
img.Save(outpath, enc);
return;
}
// Scale WIDTH in the following cases:
bool useWidth = scaleMode == Upscale.ScaleMode.PixelsWidth;
bool useLongerOnW = (scaleMode == Upscale.ScaleMode.PixelsLongerSide && widthLonger);
bool useShorterOnH = (scaleMode == Upscale.ScaleMode.PixelsShorterSide && heightLonger);
if (useWidth || useLongerOnW || useShorterOnH)
{
if (onlyDownscale && (img.Width <= scaleValue))
{
return; // don't scale
}
Logger.Log("[ImgSharp] Scaling to " + scaleValue + "px width with filter " + filter + "...");
float hFactor = (float)scaleValue / img.Width;
img.Mutate(x => x.Resize(scaleValue, (img.Height * hFactor).RoundToInt(), resampler));
img.Save(outpath, enc);
return;
}
}
public static MagickImage ResizeImageAdvancedMagick(MagickImage img, int scaleValue, Upscale.ScaleMode scaleMode, Upscale.Filter filter, bool onlyDownscale)
{
img.FilterType = FilterType.Mitchell;
if (filter == Upscale.Filter.Bicubic)
{
img.FilterType = FilterType.Catrom;
}
if (filter == Upscale.Filter.NearestNeighbor)
{
img.FilterType = FilterType.Point;
}
bool heightLonger = img.Height > img.Width;
bool widthLonger = img.Width > img.Height;
bool square = (img.Height == img.Width);
if (scaleMode == Upscale.ScaleMode.Percent)
{
Logger.Log("[ImgProc] Scaling to " + scaleValue + "% with filter " + filter + "...");
img.Resize(new Percentage(scaleValue));
return(img);
}
// Scale HEIGHT in the following cases:
bool useSquare = square && scaleMode != Upscale.ScaleMode.Percent;
bool useHeight = scaleMode == Upscale.ScaleMode.PixelsHeight;
bool useLongerOnH = (scaleMode == Upscale.ScaleMode.PixelsLongerSide && heightLonger);
bool useShorterOnW = (scaleMode == Upscale.ScaleMode.PixelsShorterSide && widthLonger);
if (useSquare || useHeight || useLongerOnH || useShorterOnW)
{
if (onlyDownscale && (img.Height <= scaleValue))
{
return(img); // Return image without scaling
}
Logger.Log("[ImgProc] Scaling to " + scaleValue + "px height with filter " + filter + "...");
MagickGeometry geom = new MagickGeometry("x" + scaleValue);
img.Resize(geom);
}
// Scale WIDTH in the following cases:
bool useWidth = scaleMode == Upscale.ScaleMode.PixelsWidth;
bool useLongerOnW = (scaleMode == Upscale.ScaleMode.PixelsLongerSide && widthLonger);
bool useShorterOnH = (scaleMode == Upscale.ScaleMode.PixelsShorterSide && heightLonger);
if (useWidth || useLongerOnW || useShorterOnH)
{
if (onlyDownscale && (img.Width <= scaleValue))
{
return(img); // Return image without scaling
}
Logger.Log("[ImgProc] Scaling to " + scaleValue + "px width with filter " + filter + "...");
MagickGeometry geom = new MagickGeometry(scaleValue + "x");
img.Resize(geom);
}
return(img);
}
