Βελτιστοποιημένη ταχύτητα αλλαγής μεγέθους εικόνας
Βελτίωσε την ταχύτητα αλλαγής μεγέθους της εικόνας και την έκανε πιο γρήγορη.
resize(ResizeType.AdaptiveResample, 3);
resize(ResizeType.AdaptiveResample, 2);
resize(ResizeType.AdaptiveResample, 0.25d);
resize(ResizeType.LanczosResample, 4);
resize(ResizeType.LanczosResample, 0.25d);
private void resize(ResizeType resizeType, double scale)
{
string baseFolder = @"D:\";
string fileName = "tiger.bmp";
string inputFileName = Path.Combine(baseFolder, fileName);
long value = 0;
int count = scale < 1 ? 50 : 5;
for (int i = 0; i < count; i++)
{
using (Image image = Image.Load(inputFileName))
{
var s = new Stopwatch();
s.Start();
image.Resize((int) Math.Round(image.Width * scale),
(int) Math.Round(image.Height * scale), resizeType);
s.Stop();
value += s.ElapsedMilliseconds;
}
}
Console.WriteLine("{0}(scale - {1}:{3} times):
{2:0.00}ms", resizeType, scale, value, count);
}
Ακριβής στοίχιση κειμένου
Προστέθηκε η υποστήριξη για την εκτέλεση της τέλειας στοίχισης κειμένου pixel.
string baseFolder = @"D:\test";
string[] alignments = new[] {"Left", "Center", "Right"};
FontSettings.Reset();
FontSettings.SetFontsFolder(Path.Combine(baseFolder, "fonts"));
FontSettings.UpdateFonts();
foreach (var alignment in alignments)
{
DrawString(baseFolder, alignment);
}
private void DrawString(string baseFolder, string align)
{
string fileName = "output_" + align + ".png";
string outputFileName = Path.Combine(baseFolder, fileName);
string[] fontNames = new[]
{
"Arial", "Times New Roman",
"Bookman Old Style", "Calibri", "Comic Sans MS",
"Courier New", "Microsoft Sans Serif", "Tahoma",
"Verdana", "Proxima Nova Rg"
};
float[] fontSizes = new[] { 10f, 22f, 50f, 100f };
int width = 3000;
int height = 3500;
using (System.IO.FileStream stream =
new System.IO.FileStream(outputFileName, System.IO.FileMode.Create))
{
//Create an instance of PngOptions and set its various properties
Aspose.Imaging.ImageOptions.PngOptions pngOptions
= new Aspose.Imaging.ImageOptions.PngOptions();
//Set the Source for PngOptions
pngOptions.Source = new Aspose.Imaging.Sources.StreamSource(stream);
//Create an instance of Image
using (Aspose.Imaging.Image image
= Aspose.Imaging.Image.Create(pngOptions, width, height))
{
//Create and initialize an instance of Graphics class
Aspose.Imaging.Graphics graphics = new Aspose.Imaging.Graphics(image);
//Clear Graphics surface
graphics.Clear(Aspose.Imaging.Color.White);
//Create a SolidBrush object and set its various properties
Aspose.Imaging.Brushes.SolidBrush brush
= new Aspose.Imaging.Brushes.SolidBrush();
brush.Color = Color.Black;
float x = 10;
int lineX = 0;
float y = 10;
float w = width - 20;
var pen = new Pen(Color.Red, 1);
StringAlignment alignment = StringAlignment.Near;
switch (align)
{
case "Left":
alignment = StringAlignment.Near;
lineX = (int)Math.Round(x, 0);
break;
case "Center":
alignment = StringAlignment.Center;
lineX = (int)Math.Round(x + w / 2f, 0);
break;
case "Right":
alignment = StringAlignment.Far;
lineX = (int)(x + w);
break;
}
var stringFormat = new StringFormat(StringFormatFlags.ExactAlignment);
stringFormat.Alignment = alignment;
foreach (var fontName in fontNames)
{
foreach (var fontSize in fontSizes)
{
var font = new Font(fontName, fontSize);
string text = String.Format("This is font: {0}, size:{1}", fontName, fontSize);
var s = graphics.MeasureString(text, font, SizeF.Empty, null);
graphics.
DrawString(text, font, brush, new RectangleF(x, y, w, s.Height), stringFormat);
y += s.Height;
}
graphics.DrawLine(pen, new Point((int)(x), (int)y), new Point((int)(x+w), (int)y));
}
graphics.DrawLine(pen, new Point(lineX, 0), new Point(lineX, (int)y));
// save all changes.
image.Save();
}
}
}
Βελτιωμένη υποδειγματοληψία YCbCr σε RGb
Αυτή η έκδοση έχει βελτιώσει την κάλυψη δοκιμής υποδειγματοληψίας «YCbCr» σε «RGb» για το «Jpeg2000».
string[] files = new string[]
{
"resultyuv420_watermark.jp2", "resultyuv422_watermark.jp2",
"resultyuv444_watermark.jp2"
};
string output = string.Empty;
foreach (string file in files)
{
string path = file;
output = file + ".png";
using (RasterImage image = (RasterImage)Image.Load(path))
{
image.Save(
output,
new PngOptions()
{ ColorType = Imaging.FileFormats.Png.PngColorType.TruecolorWithAlpha });
}
}
Για μια πλήρη λίστα λειτουργιών, βελτιώσεων και επιδιορθώσεων σφαλμάτων σε αυτήν την έκδοση, επισκεφτείτε τη διεύθυνση Aspose.Imaging for .NET 22.2.